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587f05a88b
When osnoise hist does not observe any samples above the threshold,
no entries are recorded and the final report shows empty entries
for the usual statistics (count, min, max, avg):
[~]# osnoise hist -d 5s -T 500
# RTLA osnoise histogram
# Time unit is microseconds (us)
# Duration: 0 00:00:05
Index
over:
count:
min:
avg:
max:
That could lead users to confusing interpretations of the results.
A simple solution is to report 0 for count and the statistics, making it
clear that no noise (above the defined threshold) was observed:
[~]# osnoise hist -d 5s -T 500
# RTLA osnoise histogram
# Time unit is microseconds (us)
# Duration: 0 00:00:05
Index
over: 0
count: 0
min: 0
avg: 0
max: 0
Link: https://lkml.kernel.org/r/Zml6JmH5cbS7-HfZ@uudg.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: John Kacur <jkacur@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Reviewed-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
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History
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|---|---|---|
| .. | ||
| Build | ||
| osnoise.c | ||
| osnoise.h | ||
| osnoise_hist.c | ||
| osnoise_top.c | ||
| rtla.c | ||
| timerlat.c | ||
| timerlat.h | ||
| timerlat_aa.c | ||
| timerlat_aa.h | ||
| timerlat_hist.c | ||
| timerlat_top.c | ||
| timerlat_u.c | ||
| timerlat_u.h | ||
| trace.c | ||
| trace.h | ||
| utils.c | ||
| utils.h | ||