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| author | Jin Yao <yao.jin@linux.intel.com> | 2017-12-08 16:13:45 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-08 18:06:20 +0300 |
| commit | 5b969bc766807e5c2f184d1d6f97b8471de946f1 (patch) | |
| tree | 233dfaee94c4be763def3ad3b18ce91622d95b24 /tools/perf/Documentation/perf-report.txt | |
| parent | 9a9b8b4b2271e763c1600311a3d4ecc2ac359b55 (diff) | |
| download | linux-5b969bc766807e5c2f184d1d6f97b8471de946f1.tar.xz | |
perf report: Support time percent and multiple time ranges
perf report has a --time option to limit the time range of output. It
only supports absolute time.
Now this option is extended to support multiple time ranges and support
the percent of time.
For example:
1. Select the first and second 10% time slices:
perf report --time 10%/1,10%/2
2. Select from 0% to 10% and 30% to 40% slices:
perf report --time 0%-10%,30%-40%
Changelog:
v6: Fix the merge issue with latest perf/core branch.
No functional changes.
v5: Add checking of first/last sample time to detect if it's recorded
in perf.data. If it's not recorded, returns error message to user.
v4: Remove perf_time__skip_sample, only uses perf_time__ranges_skip_sample
v3: Since the definitions of first_sample_time/last_sample_time
are moved from perf_session to perf_evlist so change the
related code.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512738826-2628-6-git-send-email-yao.jin@linux.intel.com
[ Add missing colons at end of examples in the man page ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-report.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index ddde2b54af57..1e02c4e1a81f 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -402,6 +402,26 @@ OPTIONS stop time is not given (i.e, time string is 'x.y,') then analysis goes to end of file. + Also support time percent with multiple time range. Time string is + 'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'. The maximum number of slices is 10. + + For example: + Select the second 10% time slice: + + perf report --time 10%/2 + + Select from 0% to 10% time slice: + + perf report --time 0%-10% + + Select the first and second 10% time slices: + + perf report --time 10%/1,10%/2 + + Select from 0% to 10% and 30% to 40% slices: + + perf report --time 0%-10%,30%-40% + --itrace:: Options for decoding instruction tracing data. The options are: |