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perf config: Document 'hist.percentage' variable in man page

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Explain 'hist.percentage' variable.

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1452253193-30502-7-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Taeung Song 2016-01-08 20:39:36 +09:00 committed by Arnaldo Carvalho de Melo
parent 3b97629d13
commit 485311d978
1 changed files with 17 additions and 0 deletions
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17
tools/perf/Documentation/perf-config.txt
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@ -279,6 +279,23 @@ annotate.*::
99.93 │ mov %eax,%eax
hist.*::
hist.percentage::
This option control the way to calculate overhead of filtered entries -
that means the value of this option is effective only if there's a
filter (by comm, dso or symbol name). Suppose a following example:
Overhead Symbols
........ .......
33.33% foo
33.33% bar
33.33% baz
This is an original overhead and we'll filter out the first 'foo'
entry. The value of 'relative' would increase the overhead of 'bar'
and 'baz' to 50.00% for each, while 'absolute' would show their
current overhead (33.33%).
SEE ALSO
--------
linkperf:perf[1]