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| author | Andi Kleen <ak@linux.intel.com> | 2019-07-11 11:19:22 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-07-23 08:58:11 -0300 |
| commit | 7db7218a7ea577f04c2df92453d47ab5ebfc8863 (patch) | |
| tree | 87caec7529d65937203021b4a81b29e8b839d8c5 /tools | |
| parent | 5f8eec3225ff7b86763b060164e9ce47b1a71406 (diff) | |
| download | lwn-7db7218a7ea577f04c2df92453d47ab5ebfc8863.tar.gz lwn-7db7218a7ea577f04c2df92453d47ab5ebfc8863.zip | |
perf script: Improve man page description of metrics
Clarify that a metric is based on events, not referring to itself. Also
some improvements with the sentences.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190711181922.18765-3-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/Documentation/perf-script.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index 042b9e5dcc32..caaab28f8400 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -228,11 +228,11 @@ OPTIONS With the metric option perf script can compute metrics for sampling periods, similar to perf stat. This requires - specifying a group with multiple metrics with the :S option + specifying a group with multiple events defining metrics with the :S option for perf record. perf will sample on the first event, and - compute metrics for all the events in the group. Please note + print computed metrics for all the events in the group. Please note that the metric computed is averaged over the whole sampling - period, not just for the sample point. + period (since the last sample), not just for the sample point. For sample events it's possible to display misc field with -F +misc option, following letters are displayed for each bit: |