Commit 7db7218a authored by Andi Kleen's avatar Andi Kleen Committed by Arnaldo Carvalho de Melo

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: default avatarAndi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190711181922.18765-3-andi@firstfloor.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 5f8eec32
...@@ -228,11 +228,11 @@ OPTIONS ...@@ -228,11 +228,11 @@ OPTIONS
With the metric option perf script can compute metrics for With the metric option perf script can compute metrics for
sampling periods, similar to perf stat. This requires 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 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 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, For sample events it's possible to display misc field with -F +misc option,
following letters are displayed for each bit: following letters are displayed for each bit:
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