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| author | Namhyung Kim <namhyung@kernel.org> | 2017-02-11 01:18:56 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-13 14:29:38 -0300 |
| commit | be57b3fd218ad4a19725ac4bd53e67b2ede42a9d (patch) | |
| tree | 804aeae4cc480ff051cc0ff2b6e815080ecc9fa9 | |
| parent | 4b35994abe459f08f58b4b3855abf4ba80308680 (diff) | |
| download | blackbird-obmc-linux-be57b3fd218ad4a19725ac4bd53e67b2ede42a9d.tar.gz blackbird-obmc-linux-be57b3fd218ad4a19725ac4bd53e67b2ede42a9d.zip | |
perf diff: Change default setting to "delta-abs"
The "delta-abs" compute method will show most changed entries on top.
So users can easily see how much effect between the data. Note that it
also changes the default of -o option to 1 in order to apply the compute
method. To see original-style (sorted by baseline) use -o 0 option.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170210161856.18422-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/Documentation/perf-diff.txt | 4 | ||||
| -rw-r--r-- | tools/perf/builtin-diff.c | 6 |
2 files changed, 5 insertions, 5 deletions
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt index 7391299defef..66dbe3dee74b 100644 --- a/tools/perf/Documentation/perf-diff.txt +++ b/tools/perf/Documentation/perf-diff.txt @@ -87,7 +87,7 @@ OPTIONS -c:: --compute:: Differential computation selection - delta, ratio, wdiff, delta-abs - (default is delta). Default can be changed using diff.compute + (default is delta-abs). Default can be changed using diff.compute config option. See COMPARISON METHODS section for more info. -p:: @@ -101,7 +101,7 @@ OPTIONS -o:: --order:: Specify compute sorting column number. 0 means sorting by baseline - overhead (default) and 1 means sorting by computed value of column 1 + overhead and 1 (default) means sorting by computed value of column 1 (data from the first file other base baseline). Values more than 1 can be used only if enough data files are provided. The default value can be set using the diff.order config option. diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index e68cc76bdc5a..70a289347591 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -66,7 +66,7 @@ static bool force; static bool show_period; static bool show_formula; static bool show_baseline_only; -static unsigned int sort_compute; +static unsigned int sort_compute = 1; static s64 compute_wdiff_w1; static s64 compute_wdiff_w2; @@ -86,7 +86,7 @@ const char *compute_names[COMPUTE_MAX] = { [COMPUTE_WEIGHTED_DIFF] = "wdiff", }; -static int compute = COMPUTE_DELTA; +static int compute = COMPUTE_DELTA_ABS; static int compute_2_hpp[COMPUTE_MAX] = { [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA, @@ -810,7 +810,7 @@ static const struct option options[] = { OPT_BOOLEAN('b', "baseline-only", &show_baseline_only, "Show only items with match in baseline"), OPT_CALLBACK('c', "compute", &compute, - "delta,delta-abs,ratio,wdiff:w1,w2 (default delta)", + "delta,delta-abs,ratio,wdiff:w1,w2 (default delta-abs)", "Entries differential computation selection", setup_compute), OPT_BOOLEAN('p', "period", &show_period, |
