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@@ -69,6 +69,7 @@ struct thread_trace {
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bool entry_pending;
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unsigned long nr_events;
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char *entry_str;
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+ double runtime_ms;
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};
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static struct thread_trace *thread_trace__new(void)
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@@ -109,8 +110,10 @@ struct trace {
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struct machine host;
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u64 base_time;
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unsigned long nr_events;
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+ bool sched;
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bool multiple_threads;
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double duration_filter;
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+ double runtime_ms;
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};
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static bool trace__filter_duration(struct trace *trace, double t)
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@@ -389,6 +392,31 @@ out:
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return 0;
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}
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+static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
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+ struct perf_sample *sample)
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+{
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+ u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
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+ double runtime_ms = (double)runtime / NSEC_PER_MSEC;
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+ struct thread *thread = machine__findnew_thread(&trace->host, sample->tid);
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+ struct thread_trace *ttrace = thread__trace(thread);
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+
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+ if (ttrace == NULL)
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+ goto out_dump;
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+
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+ ttrace->runtime_ms += runtime_ms;
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+ trace->runtime_ms += runtime_ms;
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+ return 0;
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+
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+out_dump:
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+ printf("%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
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+ evsel->name,
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+ perf_evsel__strval(evsel, sample, "comm"),
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+ (pid_t)perf_evsel__intval(evsel, sample, "pid"),
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+ runtime,
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+ perf_evsel__intval(evsel, sample, "vruntime"));
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+ return 0;
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+}
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+
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static int trace__run(struct trace *trace, int argc, const char **argv)
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{
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struct perf_evlist *evlist = perf_evlist__new(NULL, NULL);
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@@ -408,6 +436,13 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
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goto out_delete_evlist;
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}
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+ if (trace->sched &&
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+ perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
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+ trace__sched_stat_runtime)) {
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+ printf("Couldn't read the sched_stat_runtime tracepoint information!\n");
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+ goto out_delete_evlist;
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+ }
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+
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err = perf_evlist__create_maps(evlist, &trace->opts.target);
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if (err < 0) {
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printf("Problems parsing the target to trace, check your options!\n");
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@@ -521,6 +556,51 @@ out:
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return err;
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}
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+static size_t trace__fprintf_threads_header(FILE *fp)
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+{
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+ size_t printed;
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+
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+ printed = fprintf(fp, "\n _____________________________________________________________________\n");
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+ printed += fprintf(fp," __) Summary of events (__\n\n");
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+ printed += fprintf(fp," [ task - pid ] [ events ] [ ratio ] [ runtime ]\n");
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+ printed += fprintf(fp," _____________________________________________________________________\n\n");
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+
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+ return printed;
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+}
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+
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+static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
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+{
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+ size_t printed = trace__fprintf_threads_header(fp);
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+ struct rb_node *nd;
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+
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+ for (nd = rb_first(&trace->host.threads); nd; nd = rb_next(nd)) {
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+ struct thread *thread = rb_entry(nd, struct thread, rb_node);
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+ struct thread_trace *ttrace = thread->priv;
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+ const char *color;
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+ double ratio;
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+
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+ if (ttrace == NULL)
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+ continue;
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+
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+ ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
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+
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+ color = PERF_COLOR_NORMAL;
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+ if (ratio > 50.0)
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+ color = PERF_COLOR_RED;
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+ else if (ratio > 25.0)
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+ color = PERF_COLOR_GREEN;
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+ else if (ratio > 5.0)
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+ color = PERF_COLOR_YELLOW;
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+
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+ printed += color_fprintf(fp, color, "%20s", thread->comm);
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+ printed += fprintf(fp, " - %-5d :%11lu [", thread->pid, ttrace->nr_events);
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+ printed += color_fprintf(fp, color, "%5.1f%%", ratio);
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+ printed += fprintf(fp, " ] %10.3f ms\n", ttrace->runtime_ms);
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+ }
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+
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+ return printed;
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+}
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+
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static int trace__set_duration(const struct option *opt, const char *str,
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int unset __maybe_unused)
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{
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@@ -571,6 +651,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
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OPT_CALLBACK(0, "duration", &trace, "float",
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"show only events with duration > N.M ms",
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trace__set_duration),
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+ OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
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OPT_END()
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};
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int err;
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@@ -595,5 +676,10 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
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if (!argc && perf_target__none(&trace.opts.target))
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trace.opts.target.system_wide = true;
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- return trace__run(&trace, argc, argv);
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+ err = trace__run(&trace, argc, argv);
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+
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+ if (trace.sched && !err)
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+ trace__fprintf_thread_summary(&trace, stdout);
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+
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+ return err;
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}
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Arnaldo Carvalho de Melo