Commit-ID: be57b3fd218ad4a19725ac4bd53e67b2ede42a9d Gitweb: http://git.kernel.org/tip/be57b3fd218ad4a19725ac4bd53e67b2ede42a9d Author: Namhyung Kim <namhy...@kernel.org> AuthorDate: Sat, 11 Feb 2017 01:18:56 +0900 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Mon, 13 Feb 2017 14:29:38 -0300
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 <namhy...@kernel.org> Cc: Jiri Olsa <jo...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/20170210161856.18422-1-namhy...@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/Documentation/perf-diff.txt | 4 ++-- 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 7391299..66dbe3de 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 e68cc76..70a2893 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,
