2014-04-30 15:25:10 +02:00
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perf tools: Cache dso data file descriptor
Caching dso data file descriptors to avoid expensive re-opens
especially during DWARF unwind.
We keep dsos data file descriptors open until their count reaches
the half of the current fd open limit (RLIMIT_NOFILE). In this case
we close file descriptor of the first opened dso object.
We've got overall speedup (~27% for my workload) of report:
'perf report --stdio -i perf-test.data' (3 runs)
(perf-test.data size was around 12GB)
current code:
545,640,944,228 cycles ( +- 0.53% )
785,255,798,320 instructions ( +- 0.03% )
366.340910010 seconds time elapsed ( +- 3.65% )
after change:
435,895,036,114 cycles ( +- 0.26% )
636,790,271,176 instructions ( +- 0.04% )
266.481463387 seconds time elapsed ( +- 0.13% )
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1401892622-30848-7-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
2014-04-30 15:47:27 +02:00
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2012-10-27 23:18:32 +02:00
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2012-11-09 11:32:52 -03:00
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2015-04-09 18:53:55 +03:00
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2012-10-27 23:18:32 +02:00
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2013-09-18 15:56:14 +02:00
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2014-11-04 10:14:27 +09:00
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2013-09-18 15:56:14 +02:00
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2014-11-04 10:14:27 +09:00
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2013-09-18 15:56:14 +02:00
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2012-10-27 23:18:32 +02:00
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2013-12-16 17:03:18 -03:00
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2012-10-27 23:18:32 +02:00
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2014-07-29 10:21:58 -03:00
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2012-10-27 23:18:32 +02:00
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2015-01-26 22:34:02 -08:00
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2013-12-10 16:02:50 -03:00
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2012-10-27 23:18:32 +02:00
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2015-01-26 22:34:02 -08:00
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2014-02-20 10:32:55 +09:00
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2012-10-27 23:18:32 +02:00
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2013-12-10 16:02:50 -03:00
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2012-10-27 23:18:32 +02:00
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2014-07-29 10:21:58 -03:00
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2012-10-27 23:18:32 +02:00
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2014-07-29 10:21:58 -03:00
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2012-10-27 23:18:32 +02:00
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2013-09-18 15:56:14 +02:00
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2013-12-10 15:19:23 -03:00
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2013-09-18 15:56:14 +02:00
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2014-07-29 10:21:58 -03:00
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2013-09-18 15:56:14 +02:00
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2013-12-10 16:02:50 -03:00
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2013-09-18 15:56:14 +02:00
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2012-10-27 23:18:32 +02:00
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2014-07-29 10:21:58 -03:00
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2012-10-27 23:18:32 +02:00
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2013-08-07 14:38:47 +03:00
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2012-10-27 23:18:32 +02:00
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2014-07-29 10:21:58 -03:00
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2012-10-27 23:18:32 +02:00
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2014-11-04 10:14:27 +09:00
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2014-07-29 10:21:58 -03:00
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2012-10-27 23:18:32 +02:00
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2014-11-04 10:14:27 +09:00
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2014-07-29 10:21:58 -03:00
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2012-10-27 23:18:32 +02:00
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2013-08-07 14:38:51 +03:00
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2013-12-10 16:02:50 -03:00
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2013-08-07 14:38:51 +03:00
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2012-10-27 23:18:32 +02:00
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2014-11-04 10:14:27 +09:00
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perf tools: Add gzip decompression support for kernel module
Now my Archlinux box shows module symbols correctly.
Before:
$ perf report --stdio
Failed to open /tmp/perf-3477.map, continuing without symbols
no symbols found in /usr/bin/date, maybe install a debug package?
No kallsyms or vmlinux with build-id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 was found
[drm] with build id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 not found, continuing without symbols
No kallsyms or vmlinux with build-id edd931629094b660ca9dec09a1b635c8d87aa2ee was found
[jbd2] with build id edd931629094b660ca9dec09a1b635c8d87aa2ee not found, continuing without symbols
No kallsyms or vmlinux with build-id a7b1eada671c34933e5610bb920b2ca4945a82c3 was found
[ext4] with build id a7b1eada671c34933e5610bb920b2ca4945a82c3 not found, continuing without symbols
No kallsyms or vmlinux with build-id d69511fa3e5840e770336ef45b06c83fef8d74e3 was found
[scsi_mod] with build id d69511fa3e5840e770336ef45b06c83fef8d74e3 not found, continuing without symbols
No kallsyms or vmlinux with build-id af0430af13461af058770ee9b87afc07922c2e77 was found
[libata] with build id af0430af13461af058770ee9b87afc07922c2e77 not found, continuing without symbols
No kallsyms or vmlinux with build-id aaeedff8160ce631a5f0333591c6ff291201d29f was found
[libahci] with build id aaeedff8160ce631a5f0333591c6ff291201d29f not found, continuing without symbols
No kallsyms or vmlinux with build-id c57907712becaf662dc4981824bb372c0441d605 was found
[mac80211] with build id c57907712becaf662dc4981824bb372c0441d605 not found, continuing without symbols
No kallsyms or vmlinux with build-id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f was found
[iwldvm] with build id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f not found, continuing without symbols
No kallsyms or vmlinux with build-id 2d86086bf136bf374a2f029cf85a48194f9b950b was found
[cfg80211] with build id 2d86086bf136bf374a2f029cf85a48194f9b950b not found, continuing without symbols
No kallsyms or vmlinux with build-id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 was found
[iwlwifi] with build id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 not found, continuing without symbols
...
#
# Overhead Command Shared Object Symbol
# ........ ............... ....................... ........................................................
#
0.03% swapper [ext4] [k] 0x000000000000fe2e
0.03% swapper [kernel.kallsyms] [k] account_entity_enqueue
0.03% swapper [ext4] [k] 0x000000000000fc2b
0.03% irq/50-iwlwifi [iwlwifi] [k] 0x000000000000200b
0.03% swapper [kernel.kallsyms] [k] ktime_add_safe
0.03% swapper [kernel.kallsyms] [k] elv_completed_request
0.03% swapper [libata] [k] 0x0000000000003997
0.03% swapper [libahci] [k] 0x0000000000001f25
0.03% swapper [kernel.kallsyms] [k] rb_next
0.03% swapper [kernel.kallsyms] [k] blk_finish_request
0.03% swapper [ext4] [k] 0x0000000000010248
0.00% perf [kernel.kallsyms] [k] native_write_msr_safe
After:
$ perf report --stdio
Failed to open /tmp/perf-3477.map, continuing without symbols
no symbols found in /usr/bin/tr, maybe install a debug package?
...
#
# Overhead Command Shared Object Symbol
# ........ ............... ........................... ......................................................
#
0.04% kworker/u16:3 [ext4] [k] ext4_read_block_bitmap
0.03% kworker/u16:0 [mac80211] [k] ieee80211_sta_reset_beacon_monitor
0.02% irq/50-iwlwifi [mac80211] [k] ieee80211_get_bssid
0.02% firefox [e1000e] [k] __ew32_prepare
0.02% swapper [libahci] [k] ahci_handle_port_interrupt
0.02% emacs libglib-2.0.so.0.4000.0 [.] g_mutex_unlock
0.02% swapper [e1000e] [k] e1000_clean_tx_irq
0.02% dwm [kernel.kallsyms] [k] __schedule
0.02% gnome-terminal- [vdso] [.] __vdso_clock_gettime
0.02% swapper [e1000e] [k] e1000_alloc_rx_buffers
0.02% irq/50-iwlwifi [mac80211] [k] ieee80211_rx
0.01% firefox [vdso] [.] __vdso_gettimeofday
0.01% irq/50-iwlwifi [iwlwifi] [k] iwl_pcie_rxq_restock.part.13
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/87h9yexshi.fsf@sejong.aot.lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-31 16:51:38 +09:00
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2015-01-29 13:29:39 +01:00
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perf tools: Add gzip decompression support for kernel module
Now my Archlinux box shows module symbols correctly.
Before:
$ perf report --stdio
Failed to open /tmp/perf-3477.map, continuing without symbols
no symbols found in /usr/bin/date, maybe install a debug package?
No kallsyms or vmlinux with build-id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 was found
[drm] with build id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 not found, continuing without symbols
No kallsyms or vmlinux with build-id edd931629094b660ca9dec09a1b635c8d87aa2ee was found
[jbd2] with build id edd931629094b660ca9dec09a1b635c8d87aa2ee not found, continuing without symbols
No kallsyms or vmlinux with build-id a7b1eada671c34933e5610bb920b2ca4945a82c3 was found
[ext4] with build id a7b1eada671c34933e5610bb920b2ca4945a82c3 not found, continuing without symbols
No kallsyms or vmlinux with build-id d69511fa3e5840e770336ef45b06c83fef8d74e3 was found
[scsi_mod] with build id d69511fa3e5840e770336ef45b06c83fef8d74e3 not found, continuing without symbols
No kallsyms or vmlinux with build-id af0430af13461af058770ee9b87afc07922c2e77 was found
[libata] with build id af0430af13461af058770ee9b87afc07922c2e77 not found, continuing without symbols
No kallsyms or vmlinux with build-id aaeedff8160ce631a5f0333591c6ff291201d29f was found
[libahci] with build id aaeedff8160ce631a5f0333591c6ff291201d29f not found, continuing without symbols
No kallsyms or vmlinux with build-id c57907712becaf662dc4981824bb372c0441d605 was found
[mac80211] with build id c57907712becaf662dc4981824bb372c0441d605 not found, continuing without symbols
No kallsyms or vmlinux with build-id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f was found
[iwldvm] with build id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f not found, continuing without symbols
No kallsyms or vmlinux with build-id 2d86086bf136bf374a2f029cf85a48194f9b950b was found
[cfg80211] with build id 2d86086bf136bf374a2f029cf85a48194f9b950b not found, continuing without symbols
No kallsyms or vmlinux with build-id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 was found
[iwlwifi] with build id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 not found, continuing without symbols
...
#
# Overhead Command Shared Object Symbol
# ........ ............... ....................... ........................................................
#
0.03% swapper [ext4] [k] 0x000000000000fe2e
0.03% swapper [kernel.kallsyms] [k] account_entity_enqueue
0.03% swapper [ext4] [k] 0x000000000000fc2b
0.03% irq/50-iwlwifi [iwlwifi] [k] 0x000000000000200b
0.03% swapper [kernel.kallsyms] [k] ktime_add_safe
0.03% swapper [kernel.kallsyms] [k] elv_completed_request
0.03% swapper [libata] [k] 0x0000000000003997
0.03% swapper [libahci] [k] 0x0000000000001f25
0.03% swapper [kernel.kallsyms] [k] rb_next
0.03% swapper [kernel.kallsyms] [k] blk_finish_request
0.03% swapper [ext4] [k] 0x0000000000010248
0.00% perf [kernel.kallsyms] [k] native_write_msr_safe
After:
$ perf report --stdio
Failed to open /tmp/perf-3477.map, continuing without symbols
no symbols found in /usr/bin/tr, maybe install a debug package?
...
#
# Overhead Command Shared Object Symbol
# ........ ............... ........................... ......................................................
#
0.04% kworker/u16:3 [ext4] [k] ext4_read_block_bitmap
0.03% kworker/u16:0 [mac80211] [k] ieee80211_sta_reset_beacon_monitor
0.02% irq/50-iwlwifi [mac80211] [k] ieee80211_get_bssid
0.02% firefox [e1000e] [k] __ew32_prepare
0.02% swapper [libahci] [k] ahci_handle_port_interrupt
0.02% emacs libglib-2.0.so.0.4000.0 [.] g_mutex_unlock
0.02% swapper [e1000e] [k] e1000_clean_tx_irq
0.02% dwm [kernel.kallsyms] [k] __schedule
0.02% gnome-terminal- [vdso] [.] __vdso_clock_gettime
0.02% swapper [e1000e] [k] e1000_alloc_rx_buffers
0.02% irq/50-iwlwifi [mac80211] [k] ieee80211_rx
0.01% firefox [vdso] [.] __vdso_gettimeofday
0.01% irq/50-iwlwifi [iwlwifi] [k] iwl_pcie_rxq_restock.part.13
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/87h9yexshi.fsf@sejong.aot.lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-31 16:51:38 +09:00
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2014-11-04 10:14:27 +09:00
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2015-06-03 08:52:21 +00:00
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2014-11-04 10:14:27 +09:00
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2015-02-12 15:56:21 +01:00
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2015-06-03 08:52:21 +00:00
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2014-11-04 10:14:27 +09:00
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2015-06-03 08:52:21 +00:00
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2014-11-04 10:14:27 +09:00
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2015-02-12 15:56:21 +01:00
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2014-11-04 10:14:27 +09:00
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perf tools: Add kmod_path__parse function
Provides united way of parsing kernel module path
into several components.
The new kmod_path__parse function and few defines:
int __kmod_path__parse(struct kmod_path *m, const char *path,
bool alloc_name, bool alloc_ext);
#define kmod_path__parse(__m, __p) __kmod_path__parse(__m, __p, false, false)
#define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false)
#define kmod_path__parse_ext(__m, __p) __kmod_path__parse(__m, __p, false, true)
parse kernel module @path and updates @m argument like:
@comp - true if @path contains supported compression suffix,
false otherwise
@kmod - true if @path contains '.ko' suffix in right position,
false otherwise
@name - if (@alloc_name && @kmod) is true, it contains strdup-ed base name
of the kernel module without suffixes, otherwise strudup-ed
base name of @path
@ext - if (@alloc_ext && @comp) is true, it contains strdup-ed string
the compression suffix
It returns 0 if there's no strdup error, -ENOMEM otherwise.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-9t6eqg8j610r94l743hkntiv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-05 15:40:25 +01:00
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2015-06-03 08:52:21 +00:00
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perf tools: Add kmod_path__parse function
Provides united way of parsing kernel module path
into several components.
The new kmod_path__parse function and few defines:
int __kmod_path__parse(struct kmod_path *m, const char *path,
bool alloc_name, bool alloc_ext);
#define kmod_path__parse(__m, __p) __kmod_path__parse(__m, __p, false, false)
#define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false)
#define kmod_path__parse_ext(__m, __p) __kmod_path__parse(__m, __p, false, true)
parse kernel module @path and updates @m argument like:
@comp - true if @path contains supported compression suffix,
false otherwise
@kmod - true if @path contains '.ko' suffix in right position,
false otherwise
@name - if (@alloc_name && @kmod) is true, it contains strdup-ed base name
of the kernel module without suffixes, otherwise strudup-ed
base name of @path
@ext - if (@alloc_ext && @comp) is true, it contains strdup-ed string
the compression suffix
It returns 0 if there's no strdup error, -ENOMEM otherwise.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-9t6eqg8j610r94l743hkntiv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-05 15:40:25 +01:00
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2015-06-03 08:52:21 +00:00
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perf tools: Add kmod_path__parse function
Provides united way of parsing kernel module path
into several components.
The new kmod_path__parse function and few defines:
int __kmod_path__parse(struct kmod_path *m, const char *path,
bool alloc_name, bool alloc_ext);
#define kmod_path__parse(__m, __p) __kmod_path__parse(__m, __p, false, false)
#define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false)
#define kmod_path__parse_ext(__m, __p) __kmod_path__parse(__m, __p, false, true)
parse kernel module @path and updates @m argument like:
@comp - true if @path contains supported compression suffix,
false otherwise
@kmod - true if @path contains '.ko' suffix in right position,
false otherwise
@name - if (@alloc_name && @kmod) is true, it contains strdup-ed base name
of the kernel module without suffixes, otherwise strudup-ed
base name of @path
@ext - if (@alloc_ext && @comp) is true, it contains strdup-ed string
the compression suffix
It returns 0 if there's no strdup error, -ENOMEM otherwise.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-9t6eqg8j610r94l743hkntiv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-05 15:40:25 +01:00
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2015-06-03 08:52:21 +00:00
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perf tools: Add kmod_path__parse function
Provides united way of parsing kernel module path
into several components.
The new kmod_path__parse function and few defines:
int __kmod_path__parse(struct kmod_path *m, const char *path,
bool alloc_name, bool alloc_ext);
#define kmod_path__parse(__m, __p) __kmod_path__parse(__m, __p, false, false)
#define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false)
#define kmod_path__parse_ext(__m, __p) __kmod_path__parse(__m, __p, false, true)
parse kernel module @path and updates @m argument like:
@comp - true if @path contains supported compression suffix,
false otherwise
@kmod - true if @path contains '.ko' suffix in right position,
false otherwise
@name - if (@alloc_name && @kmod) is true, it contains strdup-ed base name
of the kernel module without suffixes, otherwise strudup-ed
base name of @path
@ext - if (@alloc_ext && @comp) is true, it contains strdup-ed string
the compression suffix
It returns 0 if there's no strdup error, -ENOMEM otherwise.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-9t6eqg8j610r94l743hkntiv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-05 15:40:25 +01:00
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2014-04-30 15:00:59 +02:00
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2014-04-30 15:25:10 +02:00
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2014-04-30 15:00:59 +02:00
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2014-04-30 15:25:10 +02:00
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2015-05-18 09:30:42 +09:00
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2014-04-30 15:00:59 +02:00
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2014-04-30 15:25:10 +02:00
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2014-04-30 15:00:59 +02:00
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2014-04-30 15:25:10 +02:00
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2014-04-30 15:00:59 +02:00
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2014-05-07 21:35:02 +02:00
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2014-08-14 02:22:36 +00:00
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2014-05-07 21:35:02 +02:00
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2015-01-30 11:33:29 +09:00
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2014-08-14 02:22:36 +00:00
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2014-05-07 21:35:02 +02:00
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2014-04-30 15:00:59 +02:00
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2012-10-27 23:18:32 +02:00
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2013-12-16 17:03:18 -03:00
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2012-10-27 23:18:32 +02:00
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2013-12-17 16:14:07 -03:00
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2013-12-16 17:03:18 -03:00
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2012-10-27 23:18:32 +02:00
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2014-05-07 21:35:02 +02:00
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2012-10-27 23:18:32 +02:00
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perf tools: Cache dso data file descriptor
Caching dso data file descriptors to avoid expensive re-opens
especially during DWARF unwind.
We keep dsos data file descriptors open until their count reaches
the half of the current fd open limit (RLIMIT_NOFILE). In this case
we close file descriptor of the first opened dso object.
We've got overall speedup (~27% for my workload) of report:
'perf report --stdio -i perf-test.data' (3 runs)
(perf-test.data size was around 12GB)
current code:
545,640,944,228 cycles ( +- 0.53% )
785,255,798,320 instructions ( +- 0.03% )
366.340910010 seconds time elapsed ( +- 3.65% )
after change:
435,895,036,114 cycles ( +- 0.26% )
636,790,271,176 instructions ( +- 0.04% )
266.481463387 seconds time elapsed ( +- 0.13% )
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1401892622-30848-7-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
2014-04-30 15:47:27 +02:00
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2014-05-07 21:09:59 +02:00
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2014-04-30 15:00:59 +02:00
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2014-07-17 11:43:09 +03:00
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2014-04-30 15:00:59 +02:00
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perf tools: Cache dso data file descriptor
Caching dso data file descriptors to avoid expensive re-opens
especially during DWARF unwind.
We keep dsos data file descriptors open until their count reaches
the half of the current fd open limit (RLIMIT_NOFILE). In this case
we close file descriptor of the first opened dso object.
We've got overall speedup (~27% for my workload) of report:
'perf report --stdio -i perf-test.data' (3 runs)
(perf-test.data size was around 12GB)
current code:
545,640,944,228 cycles ( +- 0.53% )
785,255,798,320 instructions ( +- 0.03% )
366.340910010 seconds time elapsed ( +- 3.65% )
after change:
435,895,036,114 cycles ( +- 0.26% )
636,790,271,176 instructions ( +- 0.04% )
266.481463387 seconds time elapsed ( +- 0.13% )
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1401892622-30848-7-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
2014-04-30 15:47:27 +02:00
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2014-04-30 15:00:59 +02:00
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2014-04-28 16:43:43 +02:00
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2014-05-07 18:51:41 +02:00
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2014-04-30 15:00:59 +02:00
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2014-04-28 16:43:43 +02:00
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2014-05-07 21:09:59 +02:00
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2014-04-30 15:00:59 +02:00
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perf tools: Cache dso data file descriptor
Caching dso data file descriptors to avoid expensive re-opens
especially during DWARF unwind.
We keep dsos data file descriptors open until their count reaches
the half of the current fd open limit (RLIMIT_NOFILE). In this case
we close file descriptor of the first opened dso object.
We've got overall speedup (~27% for my workload) of report:
'perf report --stdio -i perf-test.data' (3 runs)
(perf-test.data size was around 12GB)
current code:
545,640,944,228 cycles ( +- 0.53% )
785,255,798,320 instructions ( +- 0.03% )
366.340910010 seconds time elapsed ( +- 3.65% )
after change:
435,895,036,114 cycles ( +- 0.26% )
636,790,271,176 instructions ( +- 0.04% )
266.481463387 seconds time elapsed ( +- 0.13% )
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1401892622-30848-7-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
2014-04-30 15:47:27 +02:00
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2014-05-07 21:09:59 +02:00
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perf tools: Cache dso data file descriptor
Caching dso data file descriptors to avoid expensive re-opens
especially during DWARF unwind.
We keep dsos data file descriptors open until their count reaches
the half of the current fd open limit (RLIMIT_NOFILE). In this case
we close file descriptor of the first opened dso object.
We've got overall speedup (~27% for my workload) of report:
'perf report --stdio -i perf-test.data' (3 runs)
(perf-test.data size was around 12GB)
current code:
545,640,944,228 cycles ( +- 0.53% )
785,255,798,320 instructions ( +- 0.03% )
366.340910010 seconds time elapsed ( +- 3.65% )
after change:
435,895,036,114 cycles ( +- 0.26% )
636,790,271,176 instructions ( +- 0.04% )
266.481463387 seconds time elapsed ( +- 0.13% )
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1401892622-30848-7-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
2014-04-30 15:47:27 +02:00
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2014-05-07 21:09:59 +02:00
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2014-04-30 15:00:59 +02:00
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2015-05-18 09:30:42 +09:00
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2014-04-30 15:00:59 +02:00
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2015-05-18 09:30:42 +09:00
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2014-04-30 15:00:59 +02:00
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2015-05-21 01:03:39 +09:00
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2012-10-27 23:18:32 +02:00
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2013-12-16 16:57:43 -03:00
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2012-10-27 23:18:32 +02:00
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2014-04-28 16:43:43 +02:00
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2015-05-21 01:03:39 +09:00
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2014-04-28 16:43:43 +02:00
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2014-07-22 16:17:18 +03:00
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2014-04-28 16:43:43 +02:00
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2012-10-27 23:18:32 +02:00
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2013-12-17 16:14:07 -03:00
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2012-10-27 23:18:32 +02:00
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2014-07-22 16:17:18 +03:00
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2012-10-27 23:18:32 +02:00
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2013-12-17 16:14:07 -03:00
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2014-07-22 16:17:18 +03:00
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2015-05-21 01:03:39 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-21 01:03:39 +09:00
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2015-05-21 01:03:41 +09:00
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2015-05-21 01:03:39 +09:00
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2015-05-21 01:03:41 +09:00
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2015-05-21 01:03:39 +09:00
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2015-05-21 01:03:41 +09:00
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2015-05-21 01:03:39 +09:00
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2015-05-21 01:03:41 +09:00
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2015-05-21 01:03:39 +09:00
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2015-05-21 01:03:41 +09:00
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2015-05-21 01:03:39 +09:00
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2014-07-22 16:17:18 +03:00
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2012-10-27 23:18:32 +02:00
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2015-05-21 01:03:41 +09:00
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2014-07-22 16:17:19 +03:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2013-12-10 15:46:29 -03:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:42 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:42 +09:00
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2015-05-21 01:03:39 +09:00
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2015-05-18 09:30:42 +09:00
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2015-05-21 01:03:39 +09:00
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2015-05-18 09:30:42 +09:00
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2012-10-27 23:18:32 +02:00
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2015-01-29 17:02:01 -03:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:42 +09:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:42 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:42 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:41 +09:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:42 +09:00
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2012-10-27 23:18:32 +02:00
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2014-05-07 21:09:59 +02:00
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2015-05-18 09:30:42 +09:00
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2012-10-27 23:18:32 +02:00
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2012-10-27 23:18:32 +02:00
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2015-05-18 09:30:42 +09:00
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2014-05-07 18:51:41 +02:00
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2015-05-18 09:30:42 +09:00
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2014-05-07 18:51:41 +02:00
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2014-08-14 02:22:36 +00:00
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2014-05-07 18:51:41 +02:00
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2015-05-18 09:30:42 +09:00
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2015-05-21 01:03:39 +09:00
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2015-05-21 01:03:39 +09:00
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2015-05-18 09:30:42 +09:00
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2015-05-21 01:03:39 +09:00
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2014-05-07 18:51:41 +02:00
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2015-05-18 09:30:42 +09:00
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2014-05-07 18:51:41 +02:00
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2014-07-22 16:17:35 +03:00
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2014-07-22 16:17:35 +03:00
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2014-05-07 18:51:41 +02:00
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2014-05-07 18:51:41 +02:00
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2014-05-07 18:51:41 +02:00
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2014-05-07 21:09:59 +02:00
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2012-10-27 23:18:32 +02:00
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2015-05-28 12:40:55 -03:00
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2012-10-27 23:18:32 +02:00
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2015-05-29 11:31:12 -03:00
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2012-10-27 23:18:32 +02:00
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2013-12-10 11:11:46 -03:00
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2012-10-27 23:18:32 +02:00
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2014-09-30 13:36:15 -04:00
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2015-06-01 15:40:01 -03:00
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2014-09-30 13:36:15 -04:00
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2015-11-13 11:48:30 +02:00
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2014-09-30 13:36:15 -04:00
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2015-06-01 15:40:01 -03:00
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2014-09-30 13:36:15 -04:00
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2015-06-01 15:40:01 -03:00
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2014-09-30 13:36:15 -04:00
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2013-12-10 15:19:23 -03:00
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2012-10-27 23:18:32 +02:00
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2015-11-13 11:48:30 +02:00
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2012-10-27 23:18:32 +02:00
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2013-12-10 15:08:44 -03:00
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2013-12-10 15:19:23 -03:00
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2013-12-10 15:08:44 -03:00
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2015-11-13 11:48:30 +02:00
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2013-12-10 15:08:44 -03:00
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2015-11-13 11:48:30 +02:00
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2012-10-27 23:18:32 +02:00
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2013-12-10 11:11:46 -03:00
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2012-10-27 23:18:32 +02:00
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2013-12-10 11:11:46 -03:00
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2012-10-27 23:18:32 +02:00
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2013-12-05 19:26:42 +01:00
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2012-10-27 23:18:32 +02:00
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2013-12-10 15:08:44 -03:00
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2013-12-10 11:11:46 -03:00
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2012-10-27 23:18:32 +02:00
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2014-05-07 18:30:45 +02:00
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2014-04-28 16:43:43 +02:00
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2014-07-22 16:17:18 +03:00
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2012-10-27 23:18:32 +02:00
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2013-12-17 16:14:07 -03:00
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2014-07-14 13:02:41 +03:00
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2012-10-27 23:18:32 +02:00
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2013-08-07 14:38:50 +03:00
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2012-10-27 23:18:32 +02:00
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2013-09-11 14:09:31 +09:00
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2013-12-03 09:23:10 +02:00
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2012-10-27 23:18:32 +02:00
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2014-09-30 13:36:15 -04:00
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2015-11-13 11:48:30 +02:00
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2012-10-27 23:18:32 +02:00
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2014-04-30 15:00:59 +02:00
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2015-05-18 09:30:40 +09:00
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2015-06-02 11:53:26 -03:00
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2012-10-27 23:18:32 +02:00
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2014-09-30 13:36:15 -04:00
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2012-10-27 23:18:32 +02:00
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2013-12-10 15:26:55 -03:00
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2013-12-26 17:41:15 -03:00
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2013-12-10 15:26:55 -03:00
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2013-12-26 17:41:15 -03:00
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2013-12-10 15:26:55 -03:00
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2014-04-28 16:43:43 +02:00
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2015-04-09 18:53:55 +03:00
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2015-05-18 09:30:41 +09:00
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2013-12-03 09:23:07 +02:00
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2013-12-26 17:41:15 -03:00
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2015-05-18 09:30:40 +09:00
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2012-10-27 23:18:32 +02:00
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2015-06-02 11:53:26 -03:00
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2012-10-27 23:18:32 +02:00
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2015-06-01 15:40:01 -03:00
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2012-10-27 23:18:32 +02:00
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2014-09-29 16:07:28 -04:00
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2015-06-01 15:40:01 -03:00
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2015-06-02 11:53:26 -03:00
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2012-10-27 23:18:32 +02:00
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2015-06-01 15:40:01 -03:00
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2012-10-27 23:18:32 +02:00
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perf symbols: Fix vdso list searching
When "perf record" was used on a large machine with a lot of CPUs, the
perf post-processing time (the time after the workload was done until
the perf command itself exited) could take a lot of minutes and even
hours depending on how large the resulting perf.data file was.
While running AIM7 1500-user high_systime workload on a 80-core x86-64
system with a 3.9 kernel (with only the -s -a options used), the
workload itself took about 2 minutes to run and the perf.data file had a
size of 1108.746 MB. However, the post-processing step took more than 10
minutes.
With a gprof-profiled perf binary, the time spent by perf was as
follows:
% cumulative self self total
time seconds seconds calls s/call s/call name
96.90 822.10 822.10 192156 0.00 0.00 dsos__find
0.81 828.96 6.86 172089958 0.00 0.00 rb_next
0.41 832.44 3.48 48539289 0.00 0.00 rb_erase
So 97% (822 seconds) of the time was spent in a single dsos_find()
function. After analyzing the call-graph data below:
-----------------------------------------------
0.00 822.12 192156/192156 map__new [6]
[7] 96.9 0.00 822.12 192156 vdso__dso_findnew [7]
822.10 0.00 192156/192156 dsos__find [8]
0.01 0.00 192156/192156 dsos__add [62]
0.01 0.00 192156/192366 dso__new [61]
0.00 0.00 1/45282525 memdup [31]
0.00 0.00 192156/192230 dso__set_long_name [91]
-----------------------------------------------
822.10 0.00 192156/192156 vdso__dso_findnew [7]
[8] 96.9 822.10 0.00 192156 dsos__find [8]
-----------------------------------------------
It was found that the vdso__dso_findnew() function failed to locate
VDSO__MAP_NAME ("[vdso]") in the dso list and have to insert a new
entry at the end for 192156 times. This problem is due to the fact that
there are 2 types of name in the dso entry - short name and long name.
The initial dso__new() adds "[vdso]" to both the short and long names.
After that, vdso__dso_findnew() modifies the long name to something
like /tmp/perf-vdso.so-NoXkDj. The dsos__find() function only compares
the long name. As a result, the same vdso entry is duplicated many
time in the dso list. This bug increases memory consumption as well
as slows the symbol processing time to a crawl.
To resolve this problem, the dsos__find() function interface was
modified to enable searching either the long name or the short
name. The vdso__dso_findnew() will now search only the short name
while the other call sites search for the long name as before.
With this change, the cpu time of perf was reduced from 848.38s to
15.77s and dsos__find() only accounted for 0.06% of the total time.
0.06 15.73 0.01 192151 0.00 0.00 dsos__find
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: "Chandramouleeswaran, Aswin" <aswin@hp.com>
Cc: "Norton, Scott J" <scott.norton@hp.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1368110568-64714-1-git-send-email-Waiman.Long@hp.com
[ replaced TRUE/FALSE with stdbool.h equivalents, fixing builds where
those macros are not present (NO_LIBPYTHON=1 NO_LIBPERL=1), fix from Jiri Olsa ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-05-09 10:42:48 -04:00
|
|
|
|
2014-09-29 16:07:28 -04:00
|
|
|
|
perf symbols: Fix vdso list searching
When "perf record" was used on a large machine with a lot of CPUs, the
perf post-processing time (the time after the workload was done until
the perf command itself exited) could take a lot of minutes and even
hours depending on how large the resulting perf.data file was.
While running AIM7 1500-user high_systime workload on a 80-core x86-64
system with a 3.9 kernel (with only the -s -a options used), the
workload itself took about 2 minutes to run and the perf.data file had a
size of 1108.746 MB. However, the post-processing step took more than 10
minutes.
With a gprof-profiled perf binary, the time spent by perf was as
follows:
% cumulative self self total
time seconds seconds calls s/call s/call name
96.90 822.10 822.10 192156 0.00 0.00 dsos__find
0.81 828.96 6.86 172089958 0.00 0.00 rb_next
0.41 832.44 3.48 48539289 0.00 0.00 rb_erase
So 97% (822 seconds) of the time was spent in a single dsos_find()
function. After analyzing the call-graph data below:
-----------------------------------------------
0.00 822.12 192156/192156 map__new [6]
[7] 96.9 0.00 822.12 192156 vdso__dso_findnew [7]
822.10 0.00 192156/192156 dsos__find [8]
0.01 0.00 192156/192156 dsos__add [62]
0.01 0.00 192156/192366 dso__new [61]
0.00 0.00 1/45282525 memdup [31]
0.00 0.00 192156/192230 dso__set_long_name [91]
-----------------------------------------------
822.10 0.00 192156/192156 vdso__dso_findnew [7]
[8] 96.9 822.10 0.00 192156 dsos__find [8]
-----------------------------------------------
It was found that the vdso__dso_findnew() function failed to locate
VDSO__MAP_NAME ("[vdso]") in the dso list and have to insert a new
entry at the end for 192156 times. This problem is due to the fact that
there are 2 types of name in the dso entry - short name and long name.
The initial dso__new() adds "[vdso]" to both the short and long names.
After that, vdso__dso_findnew() modifies the long name to something
like /tmp/perf-vdso.so-NoXkDj. The dsos__find() function only compares
the long name. As a result, the same vdso entry is duplicated many
time in the dso list. This bug increases memory consumption as well
as slows the symbol processing time to a crawl.
To resolve this problem, the dsos__find() function interface was
modified to enable searching either the long name or the short
name. The vdso__dso_findnew() will now search only the short name
while the other call sites search for the long name as before.
With this change, the cpu time of perf was reduced from 848.38s to
15.77s and dsos__find() only accounted for 0.06% of the total time.
0.06 15.73 0.01 192151 0.00 0.00 dsos__find
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: "Chandramouleeswaran, Aswin" <aswin@hp.com>
Cc: "Norton, Scott J" <scott.norton@hp.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1368110568-64714-1-git-send-email-Waiman.Long@hp.com
[ replaced TRUE/FALSE with stdbool.h equivalents, fixing builds where
those macros are not present (NO_LIBPYTHON=1 NO_LIBPERL=1), fix from Jiri Olsa ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-05-09 10:42:48 -04:00
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2015-06-01 15:40:01 -03:00
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2012-10-27 23:18:32 +02:00
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2015-06-01 15:40:01 -03:00
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2015-02-12 22:06:09 +01:00
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2015-06-01 15:40:01 -03:00
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2015-02-12 22:06:09 +01:00
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2014-09-29 16:07:28 -04:00
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2012-10-27 23:18:32 +02:00
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2015-06-01 15:40:01 -03:00
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2012-10-27 23:18:32 +02:00
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2015-06-01 15:40:01 -03:00
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2015-06-02 11:53:26 -03:00
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2015-06-01 15:40:01 -03:00
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2012-10-27 23:18:32 +02:00
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2012-12-07 09:53:58 -03:00
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2012-10-27 23:18:32 +02:00
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2012-12-07 09:53:58 -03:00
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2012-10-27 23:18:32 +02:00
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2012-11-20 10:51:02 +01:00
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2012-10-27 23:18:32 +02:00
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2014-07-22 16:17:59 +03:00
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2015-05-21 01:03:41 +09:00
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2014-07-22 16:17:59 +03:00
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2015-05-21 01:03:41 +09:00
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2014-07-22 16:17:59 +03:00
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2015-05-21 01:03:41 +09:00
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2014-07-22 16:17:59 +03:00
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2015-03-24 11:49:02 -03:00
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