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| author | Jiri Olsa <jolsa@kernel.org> | 2014-05-23 15:15:47 (GMT) |
|---|---|---|
| committer | Jiri Olsa <jolsa@kernel.org> | 2014-06-03 19:34:59 (GMT) |
| commit | f29984226978313039d7dfe9b45eaa55a3aad03d (patch) | |
| tree | 63ddd8b0f5ad2c748a5b419c44b2eb70af906d68 /tools/perf/util/sort.h | |
| parent | 2ec85c628c4cecef0f82d177279c579aed0f9706 (diff) | |
| download | linux-f29984226978313039d7dfe9b45eaa55a3aad03d.tar.xz | |
perf tools: Move elide bool into perf_hpp_fmt struct
After output/sort fields refactoring, it's expensive
to check the elide bool in its current location inside
the 'struct sort_entry'.
The perf_hpp__should_skip function gets highly noticable in
workloads with high number of output/sort fields, like for:
$ perf report -i perf-test.data -F overhead,sample,period,comm,pid,dso,symbol,cpu --stdio
Performance report:
9.70% perf [.] perf_hpp__should_skip
Moving the elide bool into the 'struct perf_hpp_fmt', which
makes the perf_hpp__should_skip just single struct read.
Got speedup of around 22% for my test perf.data workload.
The change should not harm any other workload types.
Performance counter stats for (10 runs):
before:
358,319,732,626 cycles ( +- 0.55% )
467,129,581,515 instructions # 1.30 insns per cycle ( +- 0.00% )
150.943975206 seconds time elapsed ( +- 0.62% )
now:
278,785,972,990 cycles ( +- 0.12% )
370,146,797,640 instructions # 1.33 insns per cycle ( +- 0.00% )
116.416670507 seconds time elapsed ( +- 0.31% )
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20140601142622.GA9131@krava.brq.redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools/perf/util/sort.h')
| -rw-r--r-- | tools/perf/util/sort.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 426b873..5bf0098 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -202,7 +202,6 @@ struct sort_entry { int (*se_snprintf)(struct hist_entry *he, char *bf, size_t size, unsigned int width); u8 se_width_idx; - bool elide; }; extern struct sort_entry sort_thread; @@ -213,6 +212,7 @@ int setup_output_field(void); void reset_output_field(void); extern int sort_dimension__add(const char *); void sort__setup_elide(FILE *fp); +void perf_hpp__set_elide(int idx, bool elide); int report_parse_ignore_callees_opt(const struct option *opt, const char *arg, int unset); |