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| author | Jiri Olsa <jolsa@redhat.com> | 2012-10-05 14:44:43 (GMT) |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-05 17:10:42 (GMT) |
| commit | 81d5f95819953321a2557b0656b24ea10af9629c (patch) | |
| tree | 27efd993d93ab00da7fdfebe5c3563f1eba4d7f4 /tools/perf/util/hist.h | |
| parent | 96c47f19846742bdfa3c153c8d26ccca5945586b (diff) | |
| download | linux-81d5f95819953321a2557b0656b24ea10af9629c.tar.xz | |
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/hist.h')
| -rw-r--r-- | tools/perf/util/hist.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index a7ea28a..ce76f36 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -142,6 +142,7 @@ enum { PERF_HPP__PERIOD, PERF_HPP__DELTA, PERF_HPP__RATIO, + PERF_HPP__WEIGHTED_DIFF, PERF_HPP__DISPL, PERF_HPP__MAX_INDEX @@ -207,4 +208,5 @@ unsigned int hists__sort_list_width(struct hists *self); double perf_diff__compute_delta(struct hist_entry *he); double perf_diff__compute_ratio(struct hist_entry *he); +s64 perf_diff__compute_wdiff(struct hist_entry *he); #endif /* __PERF_HIST_H */ |