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authorTaeung Song <treeze.taeung@gmail.com>2016-01-08 20:39:36 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-01-26 11:52:48 -0300
commit485311d97863f2810646e17c8075be2992225f98 (patch)
treeb7c843abded2fbc95afc4a5c0b8787464da00908 /tools/perf/Documentation
parent3b97629d139b19cbcd15b0b3c128a4d6587d2091 (diff)
downloadlinux-485311d97863f2810646e17c8075be2992225f98.tar.gz
perf config: Document 'hist.percentage' variable in man page
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>
Diffstat (limited to 'tools/perf/Documentation')
-rw-r--r--tools/perf/Documentation/perf-config.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index cb7ca507ec5e..74589c68558a 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -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]