hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

perf sched timehist: Show total wait times for summary 

When --state option is given, the summary will show total run, sleep,
iowait, preempt and delay time instead of statistics of runtime.

  $ perf sched timehist -s --state

  Wait-time summary
            comm  parent sched-in run-time  sleep iowait preempt delay
                          (count)   (msec) (msec) (msec)  (msec) (msec)
  ---------------------------------------------------------------------
       systemd[1]      0        3    0.497   1.685 0.000   0.000 0.061
   ksoftirqd/0[3]      2       21    0.434 989.948 0.000   0.000 0.325
   rcu_preempt[7]      2       28    0.386 993.211 0.000   0.000 0.712
  migration/0[10]      2       12    0.126  50.174 0.000   0.000 0.044
   watchdog/0[11]      2        1    0.009   0.000 0.000   0.000 0.016
  migration/1[13]      2        2    0.029  11.755 0.000   0.000 0.007
  <SNIP>

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170113104523.31212-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2017-01-13 19:45:23 +09:00 committed by Arnaldo Carvalho de Melo
parent 414e050c68
commit 587782c52a
1 changed files with 41 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
tools/perf/builtin-sched.c
View File

@ -241,6 +241,10 @@ struct thread_runtime {
struct stats run_stats;
u64 total_run_time;
u64 total_sleep_time;
u64 total_iowait_time;
u64 total_preempt_time;
u64 total_delay_time;
int last_state;
u64 migrations;
@ -2008,7 +2012,12 @@ static void timehist_update_runtime_stats(struct thread_runtime *r,
}
update_stats(&r->run_stats, r->dt_run);
r->total_run_time += r->dt_run;
r->total_run_time += r->dt_run;
r->total_delay_time += r->dt_delay;
r->total_sleep_time += r->dt_sleep;
r->total_iowait_time += r->dt_iowait;
r->total_preempt_time += r->dt_preempt;
}
static bool is_idle_sample(struct perf_sample *sample,
@ -2593,7 +2602,26 @@ static void print_thread_runtime(struct thread *t,
printf("\n");
}
static void print_thread_waittime(struct thread *t,
struct thread_runtime *r)
{
printf("%*s %5d %9" PRIu64 " ",
comm_width, timehist_get_commstr(t), t->ppid,
(u64) r->run_stats.n);
print_sched_time(r->total_run_time, 8);
print_sched_time(r->total_sleep_time, 6);
printf(" ");
print_sched_time(r->total_iowait_time, 6);
printf(" ");
print_sched_time(r->total_preempt_time, 6);
printf(" ");
print_sched_time(r->total_delay_time, 6);
printf("\n");
}
struct total_run_stats {
struct perf_sched *sched;
u64 sched_count;
u64 task_count;
u64 total_run_time;
@ -2612,7 +2640,11 @@ static int __show_thread_runtime(struct thread *t, void *priv)
stats->task_count++;
stats->sched_count += r->run_stats.n;
stats->total_run_time += r->total_run_time;
print_thread_runtime(t, r);
if (stats->sched->show_state)
print_thread_waittime(t, r);
else
print_thread_runtime(t, r);
}
return 0;
@ -2700,18 +2732,24 @@ static void timehist_print_summary(struct perf_sched *sched,
u64 hist_time = sched->hist_time.end - sched->hist_time.start;
memset(&totals, 0, sizeof(totals));
totals.sched = sched;
if (sched->idle_hist) {
printf("\nIdle-time summary\n");
printf("%*s parent sched-out ", comm_width, "comm");
printf(" idle-time min-idle avg-idle max-idle stddev migrations\n");
} else if (sched->show_state) {
printf("\nWait-time summary\n");
printf("%*s parent sched-in ", comm_width, "comm");
printf(" run-time sleep iowait preempt delay\n");
} else {
printf("\nRuntime summary\n");
printf("%*s parent sched-in ", comm_width, "comm");
printf(" run-time min-run avg-run max-run stddev migrations\n");
}
printf("%*s (count) ", comm_width, "");
printf(" (msec) (msec) (msec) (msec) %%\n");
printf(" (msec) (msec) (msec) (msec) %s\n",
sched->show_state ? "(msec)" : "%");
printf("%.117s\n", graph_dotted_line);
machine__for_each_thread(m, show_thread_runtime, &totals);