diff options
Diffstat (limited to 'tools/perf/builtin-sched.c')
| -rw-r--r-- | tools/perf/builtin-sched.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 3e00323..2ce87ef 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -116,6 +116,8 @@ static u64 sum_fluct; static u64 run_avg; static unsigned long replay_repeat = 10; +static unsigned long nr_timestamps; +static unsigned long unordered_timestamps; #define TASK_STATE_TO_CHAR_STR "RSDTtZX" @@ -1109,8 +1111,11 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event, if (atom->state != THREAD_SLEEPING) return; - if (atom->sched_out_time > timestamp) + nr_timestamps++; + if (atom->sched_out_time > timestamp) { + unordered_timestamps++; return; + } atom->state = THREAD_WAIT_CPU; atom->wake_up_time = timestamp; @@ -1130,6 +1135,11 @@ static void output_lat_thread(struct task_atoms *atom_list) if (!atom_list->nb_atoms) return; + /* + * Ignore idle threads: + */ + if (!atom_list->thread->pid) + return; all_runtime += atom_list->total_runtime; all_count += atom_list->nb_atoms; @@ -1301,8 +1311,16 @@ static void __cmd_lat(void) } printf("-----------------------------------------------------------------------------------\n"); - printf(" TOTAL: |%9.3f ms |%9Ld |\n", + printf(" TOTAL: |%9.3f ms |%9Ld |", (double)all_runtime/1e6, all_count); + + if (unordered_timestamps && nr_timestamps) { + printf(" INFO: %.2f%% unordered events.\n", + (double)unordered_timestamps/(double)nr_timestamps*100.0); + } else { + printf("\n"); + } + printf("---------------------------------------------\n"); } @@ -1667,12 +1685,13 @@ static const char *record_args[] = { "-a", "-R", "-M", - "-g", + "-f", "-c", "1", "-e", "sched:sched_switch:r", "-e", "sched:sched_stat_wait:r", "-e", "sched:sched_stat_sleep:r", "-e", "sched:sched_stat_iowait:r", + "-e", "sched:sched_stat_runtime:r", "-e", "sched:sched_process_exit:r", "-e", "sched:sched_process_fork:r", "-e", "sched:sched_wakeup:r", |
