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linux/tools/perf/util/bpf-trace-summary.c

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perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf auxtrace: Remove errno.h from auxtrace.h and fix transitive dependencies errno.h isn't used in auxtrace.h so remove it and fix build failures caused by transitive dependencies through auxtrace.h on errno.h. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: James Clark <james.clark@linaro.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-11-09 17:31:52 -08:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace beauty: Make beauty generated C code standalone .o files Previously, builtin-trace.c directly included 15 embedded C files (e.g. trace/beauty/mmap.c and fsconfig_arrays.c), which in turn depend on dozens of generated beauty script arrays. To satisfy these embedded inclusions, the global Makefile.perf would define all the generator variables/rules and include them in the prepare umbrella target, choking parallel build startup. Furthermore, tools/perf/util/syscalltbl.c included its own generated mapper, and util/env.c conditionally included arch_errno_names.c inline, splitting consumers across directories and preventing clean Make encapsulation. Refactor the framework to achieve better encapsulation: 1. Move util/syscalltbl.[ch] into trace/beauty/ to co-locate with all generated code consumers. 2. Create fsconfig.c and flatten embedded beauty .c files to compile as independent standalone objects via trace/beauty/Build, exporting their formatting functions via beauty.h and env.h. Switch arch_errno_names.o and syscalltbl.o assignments directly to perf-util-y and add an unconditional top-level recursive kbuild hook (perf-util-y += trace/beauty/) to compile them into libperf-util.a, resolving remote linkage for util/env.c, util/bpf-trace-summary.c, and standalone python extensions. 3. Bridge private opaque references (struct trace) securely via accessors trace__show_zeros() and trace__host(), avoiding header entanglements. 4. Consolidate all generator variables, script paths, and array generation rules entirely out of Makefile.perf and place them directly inside the exact local Build files where their output objects are compiled (trace/beauty/Build and trace/beauty/tracepoints/Build), binding prerequisites locally. Use directly inside generator recipes to guarantee dynamic directory creation before script redirection, and append across all rules to print clean, standardized GEN ... file.c output during compilation. 5. Clean up clean target to recursively remove the generated directory instead of relying on dozens of individual variables. This unchokes the "prepare" target parallel barrier, allows make to evaluate generation scripts purely locally where consumed, and flattens the tracepoint formatting architecture. Testing a parallel build (make -j28 all from scratch) shows improvements: Before: real 0m28.689s user 2m38.490s sys 0m30.148s After: real 0m27.642s user 2m32.356s sys 0m26.683s So reclaiming ~9.6 seconds of raw CPU time and over 1 full second off overall real-world build latency, by overlapping sub-make startup and avoiding top-level double-parsing overhead. Reviewed-by: Namhyung Kim <namhyung@kernel.org> Assisted-by: Gemini:gemini-3.1-pro-preview Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: James Clark <james.clark@linaro.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Chartre <alexandre.chartre@oracle.com> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Ankur Arora <ankur.a.arora@oracle.com> Cc: Collin Funk <collin.funk1@gmail.com> Cc: Costa Shulyupin <costa.shul@redhat.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Dapeng Mi <dapeng1.mi@linux.intel.com> Cc: David Sterba <dsterba@suse.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Eduard Zingerman <eddyz87@gmail.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kumar Kartikeya Dwivedi <memxor@gmail.com> Cc: Leo Yan <leo.yan@arm.com> Cc: Markus Mayer <mmayer@broadcom.com> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Terrell <terrelln@fb.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <pjw@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Quentin Monnet <qmo@kernel.org> Cc: Ricky Ringler <ricky.ringler@proton.me> Cc: Song Liu <song@kernel.org> Cc: Swapnil Sapkal <swapnil.sapkal@amd.com> Cc: Thomas Falcon <thomas.falcon@intel.com> Cc: Tomas Glozar <tglozar@redhat.com> Cc: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2026-05-18 08:46:26 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Add --max-summary option The --max-summary option is to limit the number of output lines for syscall summary stats. The max applies to each entries like thread and cgroups. For total summary, it will just print up to the given number. For example, $ sudo perf trace -as --max-summary 3 sleep 0.1 ThreadPoolServi (1011651), 114 events, 14.8% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 38 0 95.589 0.000 2.515 11.153 28.98% futex 9 0 0.040 0.002 0.004 0.014 28.63% read 10 0 0.037 0.003 0.004 0.005 4.67% sleep (1050529), 250 events, 32.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ clock_nanosleep 1 0 100.156 100.156 100.156 100.156 0.00% execve 4 3 1.020 0.005 0.255 0.989 95.93% openat 36 17 0.416 0.003 0.012 0.029 10.58% ... And this is for per-cgroup summary using BPF. $ sudo perf trace -as --max-summary 3 --summary-mode=cgroup --bpf-summary sleep 0.1 cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 12 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 7 0.016 0.001 0.002 0.006 39.73% ppoll 1 0 0.014 0.014 0.014 0.014 0.00% write 2 0 0.010 0.002 0.005 0.008 61.02% cgroup /user.slice/user-657345.slice/session-4.scope, 73 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 8 0 13.461 0.010 1.683 12.235 89.66% ioctl 20 0 0.204 0.001 0.010 0.113 54.01% writev 11 0 0.164 0.004 0.015 0.042 20.34% Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-08-20 17:32:20 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00
perf trace: Support --summary-mode=cgroup Add a new summary mode to collect stats for each cgroup. $ sudo ./perf trace -as --bpf-summary --summary-mode=cgroup -- sleep 1 Summary of events: cgroup /user.slice/user-657345.slice/user@657345.service/session.slice/org.gnome.Shell@x11.service, 535 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 15 0 373.600 0.004 24.907 197.491 55.26% poll 15 0 1.325 0.001 0.088 0.369 38.76% close 66 0 0.567 0.007 0.009 0.026 3.55% write 150 0 0.471 0.001 0.003 0.010 3.29% recvmsg 94 83 0.290 0.000 0.003 0.037 16.39% ioctl 26 0 0.237 0.001 0.009 0.096 50.13% timerfd_create 66 0 0.236 0.003 0.004 0.024 8.92% timerfd_settime 70 0 0.160 0.001 0.002 0.012 7.66% writev 10 0 0.118 0.001 0.012 0.019 18.17% read 9 0 0.021 0.001 0.002 0.004 14.07% getpid 14 0 0.019 0.000 0.001 0.004 20.28% cgroup /system.slice/polkit.service, 94 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 22 0 19.811 0.000 0.900 9.273 63.88% write 30 0 0.040 0.001 0.001 0.003 12.09% recvmsg 12 0 0.018 0.001 0.002 0.006 28.15% read 18 0 0.013 0.000 0.001 0.003 21.99% poll 12 0 0.006 0.000 0.001 0.001 4.48% cgroup /user.slice/user-657345.slice/user@657345.service/app.slice/app-org.gnome.Terminal.slice/gnome-terminal-server.service, 21 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ ppoll 4 0 17.476 0.003 4.369 13.298 69.65% recvmsg 15 12 0.068 0.002 0.005 0.014 26.53% writev 1 0 0.033 0.033 0.033 0.033 0.00% poll 1 0 0.005 0.005 0.005 0.005 0.00% ... It works only for --bpf-summary for now. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250501225337.928470-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-01 15:53:37 -07:00
perf trace: Implement syscall summary in BPF When -s/--summary option is used, it doesn't need (augmented) arguments of syscalls. Let's skip the augmentation and load another small BPF program to collect the statistics in the kernel instead of copying the data to the ring-buffer to calculate the stats in userspace. This will be much more light-weight than the existing approach and remove any lost events. Let's add a new option --bpf-summary to control this behavior. I cannot make it default because there's no way to get e_machine in the BPF which is needed for detecting different ABIs like 32-bit compat mode. No functional changes intended except for no more LOST events. :) $ sudo ./perf trace -as --summary-mode=total --bpf-summary sleep 1 Summary of events: total, 6194 events syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ epoll_wait 561 0 4530.843 0.000 8.076 520.941 18.75% futex 693 45 4317.231 0.000 6.230 500.077 21.98% poll 300 0 1040.109 0.000 3.467 120.928 17.02% clock_nanosleep 1 0 1000.172 1000.172 1000.172 1000.172 0.00% ppoll 360 0 872.386 0.001 2.423 253.275 41.91% epoll_pwait 14 0 384.349 0.001 27.453 380.002 98.79% pselect6 14 0 108.130 7.198 7.724 8.206 0.85% nanosleep 39 0 43.378 0.069 1.112 10.084 44.23% ... Reviewed-by: Howard Chu <howardchu95@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250326044001.3503432-1-namhyung@kernel.org [ Added fixup sent from Namhyung in response to my report to make it also dependent on CONFIG_TRACE ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-03-25 21:40:00 -07:00