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| author | Jiri Olsa <jolsa@redhat.com> | 2012-10-05 16:44:43 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-05 14:10:42 -0300 |
| commit | 81d5f95819953321a2557b0656b24ea10af9629c (patch) | |
| tree | 27efd993d93ab00da7fdfebe5c3563f1eba4d7f4 /tools/perf/util/sort.h | |
| parent | 96c47f19846742bdfa3c153c8d26ccca5945586b (diff) | |
| download | talos-op-linux-81d5f95819953321a2557b0656b24ea10af9629c.tar.gz talos-op-linux-81d5f95819953321a2557b0656b24ea10af9629c.zip | |
perf diff: Add weighted diff computation way to compare hist entries
Adding 'wdiff' as new computation way to compare hist entries.
If specified the 'Weighted diff' column is displayed with value 'd'
computed as:
d = B->period * WEIGHT-A - A->period * WEIGHT-B
- 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
- WEIGHT-A/WEIGHT-B being user suplied weights in the the '-c' option
behind ':' separator like '-c wdiff:1,2'.
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/1349448287-18919-5-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/sort.h')
| -rw-r--r-- | tools/perf/util/sort.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 337aeefa2451..13761d83a5a0 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -63,6 +63,9 @@ struct hist_entry_diff { /* PERF_HPP__RATIO */ double period_ratio; + + /* HISTC_WEIGHTED_DIFF */ + s64 wdiff; }; /** |
