Explain 'hist.percentage' variable.
Cc: Namhyung Kim <[email protected]>
Cc: Jiri Olsa <[email protected]>
Signed-off-by: Taeung Song <[email protected]>
---
tools/perf/Documentation/perf-config.txt | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/tools/perf/Documentation/perf-config.txt
b/tools/perf/Documentation/perf-config.txt
index 70fbc41..c526059 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -282,6 +282,23 @@ help.*::
help.format::
A format of manual page can be 'man' that is default.
+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]
--
1.9.1
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