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perf stat report: Process stat and stat round events

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Adding processing of stat and stat round events.

The stat data com in stat events, using generic function
process_stat_round_event to store data under perf_evsel object.

The stat-round events comes each interval or as last event in non
interval mode. The function process_stat_round_event process stored data
for each perf_evsel object and print it out.

Committer note:

After this patch:

  $ perf stat record usleep 1

   Performance counter stats for 'usleep 1':

        0.498381  task-clock (msec)       #    0.571 CPUs utilized
               2  context-switches        #    0.004 M/sec
               0  cpu-migrations          #    0.000 K/sec
             149  page-faults             #    0.299 M/sec
       1,271,635  cycles                  #    2.552 GHz
         928,712  stalled-cycles-frontend #   73.03% frontend cycles idle
         663,286  stalled-cycles-backend  #   52.16% backend  cycles idle
         792,614  instructions            #    0.62  insns per cycle
                                          #    1.17  stalled cycles per insn
         136,850  branches                #  274.589 M/sec
   <not counted>  branch-misses            (0.00%)

     0.000873419 seconds time elapsed

  $
  $ perf stat report

   Performance counter stats for '/home/acme/bin/perf stat record usleep 1':

        0.498381  task-clock (msec)       #    0.571 CPUs utilized
               2  context-switches        #    0.004 M/sec
               0  cpu-migrations          #    0.000 K/sec
             149  page-faults             #    0.299 M/sec
       1,271,635  cycles                  #    2.552 GHz
         928,712  stalled-cycles-frontend #   73.03% frontend cycles idle
         663,286  stalled-cycles-backend  #   52.16% backend  cycles idle
         792,614  instructions            #    0.62  insns per cycle
                                          #    1.17  stalled cycles per insn
         136,850  branches                #  274.589 M/sec
   <not counted>  branch-misses            (0.00%)

     0.000873419 seconds time elapsed

  $

Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-16-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2015-11-05 15:40:59 +01:00
committed by Arnaldo Carvalho de Melo
parent 6edb78a217
commit a56f9390aa
1 changed files with 28 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
tools/perf/builtin-stat.c
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@@ -1628,6 +1628,32 @@ static int __cmd_record(int argc, const char **argv)
return argc;
}
static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_session *session)
{
struct stat_round_event *round = &event->stat_round;
struct perf_evsel *counter;
struct timespec tsh, *ts = NULL;
const char **argv = session->header.env.cmdline_argv;
int argc = session->header.env.nr_cmdline;
evlist__for_each(evsel_list, counter)
perf_stat_process_counter(&stat_config, counter);
if (round->type == PERF_STAT_ROUND_TYPE__FINAL)
update_stats(&walltime_nsecs_stats, round->time);
if (stat_config.interval && round->time) {
tsh.tv_sec = round->time / NSECS_PER_SEC;
tsh.tv_nsec = round->time % NSECS_PER_SEC;
ts = &tsh;
}
print_counters(ts, argc, argv);
return 0;
}
static
int process_stat_config_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
@@ -1713,6 +1739,8 @@ static struct perf_stat perf_stat = {
.thread_map = process_thread_map_event,
.cpu_map = process_cpu_map_event,
.stat_config = process_stat_config_event,
.stat = perf_event__process_stat_event,
.stat_round = process_stat_round_event,
},
};