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authorJiri Olsa <jolsa@redhat.com>2012-10-05 14:44:41 (GMT)
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-10-05 17:06:54 (GMT)
commit7aaf6b35512382329c5b2dd46b42f2bf12a5fff0 (patch)
treea0523500216e2224547bfe4c3e49630826fcbcf0 /tools/perf/util/hist.h
parenta06d143e7cfaa10626f3ad0127a9b9169f900add (diff)
downloadlinux-fsl-qoriq-7aaf6b35512382329c5b2dd46b42f2bf12a5fff0.tar.xz
perf diff: Add ratio computation way to compare hist entries
Adding -c option to select computation method with the current 'Delta' computation as default. Current possible values are of this option are: 'delta' and 'ratio'. Adding 'ratio' as new computation way to compare hist entries. If specified the 'Ratio' column is displayed with value 'r' computed as: r = A->period / B->period with: - A/B being matching hist entry from first/second file specified (or perf.data/perf.data.old) respectively. - period being the hist entry period value Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1349448287-18919-3-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/hist.h')
-rw-r--r--tools/perf/util/hist.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 66cb31f..7e4d4c2 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -141,6 +141,7 @@ enum {
PERF_HPP__SAMPLES,
PERF_HPP__PERIOD,
PERF_HPP__DELTA,
+ PERF_HPP__RATIO,
PERF_HPP__DISPL,
PERF_HPP__MAX_INDEX