4 * Builtin stat command: Give a precise performance counters summary
5 * overview about any workload, CPU or specific PID.
9 $ perf stat ./hackbench 10
13 Performance counter stats for './hackbench 10':
15 1708.761321 task-clock # 11.037 CPUs utilized
16 41,190 context-switches # 0.024 M/sec
17 6,735 CPU-migrations # 0.004 M/sec
18 17,318 page-faults # 0.010 M/sec
19 5,205,202,243 cycles # 3.046 GHz
20 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
21 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
22 2,603,501,247 instructions # 0.50 insns per cycle
23 # 1.48 stalled cycles per insn
24 484,357,498 branches # 283.455 M/sec
25 6,388,934 branch-misses # 1.32% of all branches
27 0.154822978 seconds time elapsed
30 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
32 * Improvements and fixes by:
34 * Arjan van de Ven <arjan@linux.intel.com>
35 * Yanmin Zhang <yanmin.zhang@intel.com>
36 * Wu Fengguang <fengguang.wu@intel.com>
37 * Mike Galbraith <efault@gmx.de>
38 * Paul Mackerras <paulus@samba.org>
39 * Jaswinder Singh Rajput <jaswinder@kernel.org>
41 * Released under the GPL v2. (and only v2, not any later version)
46 #include "util/cgroup.h"
47 #include "util/util.h"
48 #include <subcmd/parse-options.h>
49 #include "util/parse-events.h"
51 #include "util/event.h"
52 #include "util/evlist.h"
53 #include "util/evsel.h"
54 #include "util/debug.h"
55 #include "util/color.h"
56 #include "util/stat.h"
57 #include "util/header.h"
58 #include "util/cpumap.h"
59 #include "util/thread.h"
60 #include "util/thread_map.h"
61 #include "util/counts.h"
62 #include "util/session.h"
63 #include "util/tool.h"
67 #include <sys/prctl.h>
70 #define DEFAULT_SEPARATOR " "
71 #define CNTR_NOT_SUPPORTED "<not supported>"
72 #define CNTR_NOT_COUNTED "<not counted>"
74 static void print_counters(struct timespec *ts, int argc, const char **argv);
76 /* Default events used for perf stat -T */
77 static const char *transaction_attrs = {
89 /* More limited version when the CPU does not have all events. */
90 static const char * transaction_limited_attrs = {
100 static struct perf_evlist *evsel_list;
102 static struct target target = {
106 typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
108 static int run_count = 1;
109 static bool no_inherit = false;
110 static volatile pid_t child_pid = -1;
111 static bool null_run = false;
112 static int detailed_run = 0;
113 static bool transaction_run;
114 static bool big_num = true;
115 static int big_num_opt = -1;
116 static const char *csv_sep = NULL;
117 static bool csv_output = false;
118 static bool group = false;
119 static const char *pre_cmd = NULL;
120 static const char *post_cmd = NULL;
121 static bool sync_run = false;
122 static unsigned int initial_delay = 0;
123 static unsigned int unit_width = 4; /* strlen("unit") */
124 static bool forever = false;
125 static bool metric_only = false;
126 static struct timespec ref_time;
127 static struct cpu_map *aggr_map;
128 static aggr_get_id_t aggr_get_id;
129 static bool append_file;
130 static const char *output_name;
131 static int output_fd;
135 struct perf_data_file file;
136 struct perf_session *session;
138 struct perf_tool tool;
140 struct cpu_map *cpus;
141 struct thread_map *threads;
142 enum aggr_mode aggr_mode;
145 static struct perf_stat perf_stat;
146 #define STAT_RECORD perf_stat.record
148 static volatile int done = 0;
150 static struct perf_stat_config stat_config = {
151 .aggr_mode = AGGR_GLOBAL,
155 static inline void diff_timespec(struct timespec *r, struct timespec *a,
158 r->tv_sec = a->tv_sec - b->tv_sec;
159 if (a->tv_nsec < b->tv_nsec) {
160 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
163 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
167 static void perf_stat__reset_stats(void)
169 perf_evlist__reset_stats(evsel_list);
170 perf_stat__reset_shadow_stats();
173 static int create_perf_stat_counter(struct perf_evsel *evsel)
175 struct perf_event_attr *attr = &evsel->attr;
177 if (stat_config.scale)
178 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
179 PERF_FORMAT_TOTAL_TIME_RUNNING;
181 attr->inherit = !no_inherit;
184 * Some events get initialized with sample_(period/type) set,
185 * like tracepoints. Clear it up for counting.
187 attr->sample_period = 0;
190 * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
191 * while avoiding that older tools show confusing messages.
193 * However for pipe sessions we need to keep it zero,
194 * because script's perf_evsel__check_attr is triggered
195 * by attr->sample_type != 0, and we can't run it on
198 if (!(STAT_RECORD && perf_stat.file.is_pipe))
199 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
202 * Disabling all counters initially, they will be enabled
203 * either manually by us or by kernel via enable_on_exec
206 if (perf_evsel__is_group_leader(evsel)) {
210 * In case of initial_delay we enable tracee
213 if (target__none(&target) && !initial_delay)
214 attr->enable_on_exec = 1;
217 if (target__has_cpu(&target))
218 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
220 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
224 * Does the counter have nsecs as a unit?
226 static inline int nsec_counter(struct perf_evsel *evsel)
228 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
229 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
235 static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
236 union perf_event *event,
237 struct perf_sample *sample __maybe_unused,
238 struct machine *machine __maybe_unused)
240 if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) {
241 pr_err("failed to write perf data, error: %m\n");
245 perf_stat.bytes_written += event->header.size;
249 static int write_stat_round_event(u64 tm, u64 type)
251 return perf_event__synthesize_stat_round(NULL, tm, type,
252 process_synthesized_event,
256 #define WRITE_STAT_ROUND_EVENT(time, interval) \
257 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
259 #define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
262 perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
263 struct perf_counts_values *count)
265 struct perf_sample_id *sid = SID(counter, cpu, thread);
267 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
268 process_synthesized_event, NULL);
272 * Read out the results of a single counter:
273 * do not aggregate counts across CPUs in system-wide mode
275 static int read_counter(struct perf_evsel *counter)
277 int nthreads = thread_map__nr(evsel_list->threads);
278 int ncpus = perf_evsel__nr_cpus(counter);
281 if (!counter->supported)
284 if (counter->system_wide)
287 for (thread = 0; thread < nthreads; thread++) {
288 for (cpu = 0; cpu < ncpus; cpu++) {
289 struct perf_counts_values *count;
291 count = perf_counts(counter->counts, cpu, thread);
292 if (perf_evsel__read(counter, cpu, thread, count))
296 if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
297 pr_err("failed to write stat event\n");
307 static void read_counters(bool close_counters)
309 struct perf_evsel *counter;
311 evlist__for_each(evsel_list, counter) {
312 if (read_counter(counter))
313 pr_debug("failed to read counter %s\n", counter->name);
315 if (perf_stat_process_counter(&stat_config, counter))
316 pr_warning("failed to process counter %s\n", counter->name);
318 if (close_counters) {
319 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
320 thread_map__nr(evsel_list->threads));
325 static void process_interval(void)
327 struct timespec ts, rs;
329 read_counters(false);
331 clock_gettime(CLOCK_MONOTONIC, &ts);
332 diff_timespec(&rs, &ts, &ref_time);
335 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSECS_PER_SEC + rs.tv_nsec, INTERVAL))
336 pr_err("failed to write stat round event\n");
339 print_counters(&rs, 0, NULL);
342 static void enable_counters(void)
345 usleep(initial_delay * 1000);
348 * We need to enable counters only if:
349 * - we don't have tracee (attaching to task or cpu)
350 * - we have initial delay configured
352 if (!target__none(&target) || initial_delay)
353 perf_evlist__enable(evsel_list);
356 static volatile int workload_exec_errno;
359 * perf_evlist__prepare_workload will send a SIGUSR1
360 * if the fork fails, since we asked by setting its
361 * want_signal to true.
363 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
364 void *ucontext __maybe_unused)
366 workload_exec_errno = info->si_value.sival_int;
369 static bool has_unit(struct perf_evsel *counter)
371 return counter->unit && *counter->unit;
374 static bool has_scale(struct perf_evsel *counter)
376 return counter->scale != 1;
379 static int perf_stat_synthesize_config(bool is_pipe)
381 struct perf_evsel *counter;
385 err = perf_event__synthesize_attrs(NULL, perf_stat.session,
386 process_synthesized_event);
388 pr_err("Couldn't synthesize attrs.\n");
394 * Synthesize other events stuff not carried within
395 * attr event - unit, scale, name
397 evlist__for_each(evsel_list, counter) {
398 if (!counter->supported)
402 * Synthesize unit and scale only if it's defined.
404 if (has_unit(counter)) {
405 err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
407 pr_err("Couldn't synthesize evsel unit.\n");
412 if (has_scale(counter)) {
413 err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
415 pr_err("Couldn't synthesize evsel scale.\n");
420 if (counter->own_cpus) {
421 err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
423 pr_err("Couldn't synthesize evsel scale.\n");
429 * Name is needed only for pipe output,
430 * perf.data carries event names.
433 err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
435 pr_err("Couldn't synthesize evsel name.\n");
441 err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
442 process_synthesized_event,
445 pr_err("Couldn't synthesize thread map.\n");
449 err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
450 process_synthesized_event, NULL);
452 pr_err("Couldn't synthesize thread map.\n");
456 err = perf_event__synthesize_stat_config(NULL, &stat_config,
457 process_synthesized_event, NULL);
459 pr_err("Couldn't synthesize config.\n");
466 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
468 static int __store_counter_ids(struct perf_evsel *counter,
469 struct cpu_map *cpus,
470 struct thread_map *threads)
474 for (cpu = 0; cpu < cpus->nr; cpu++) {
475 for (thread = 0; thread < threads->nr; thread++) {
476 int fd = FD(counter, cpu, thread);
478 if (perf_evlist__id_add_fd(evsel_list, counter,
479 cpu, thread, fd) < 0)
487 static int store_counter_ids(struct perf_evsel *counter)
489 struct cpu_map *cpus = counter->cpus;
490 struct thread_map *threads = counter->threads;
492 if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
495 return __store_counter_ids(counter, cpus, threads);
498 static int __run_perf_stat(int argc, const char **argv)
500 int interval = stat_config.interval;
502 unsigned long long t0, t1;
503 struct perf_evsel *counter;
507 const bool forks = (argc > 0);
508 bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false;
511 ts.tv_sec = interval / 1000;
512 ts.tv_nsec = (interval % 1000) * 1000000;
519 if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
520 workload_exec_failed_signal) < 0) {
521 perror("failed to prepare workload");
524 child_pid = evsel_list->workload.pid;
528 perf_evlist__set_leader(evsel_list);
530 evlist__for_each(evsel_list, counter) {
532 if (create_perf_stat_counter(counter) < 0) {
534 * PPC returns ENXIO for HW counters until 2.6.37
535 * (behavior changed with commit b0a873e).
537 if (errno == EINVAL || errno == ENOSYS ||
538 errno == ENOENT || errno == EOPNOTSUPP ||
541 ui__warning("%s event is not supported by the kernel.\n",
542 perf_evsel__name(counter));
543 counter->supported = false;
545 if ((counter->leader != counter) ||
546 !(counter->leader->nr_members > 1))
548 } else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
550 ui__warning("%s\n", msg);
554 perf_evsel__open_strerror(counter, &target,
555 errno, msg, sizeof(msg));
556 ui__error("%s\n", msg);
559 kill(child_pid, SIGTERM);
563 counter->supported = true;
565 l = strlen(counter->unit);
569 if (STAT_RECORD && store_counter_ids(counter))
573 if (perf_evlist__apply_filters(evsel_list, &counter)) {
574 error("failed to set filter \"%s\" on event %s with %d (%s)\n",
575 counter->filter, perf_evsel__name(counter), errno,
576 strerror_r(errno, msg, sizeof(msg)));
581 int err, fd = perf_data_file__fd(&perf_stat.file);
584 err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file));
586 err = perf_session__write_header(perf_stat.session, evsel_list,
593 err = perf_stat_synthesize_config(is_pipe);
599 * Enable counters and exec the command:
602 clock_gettime(CLOCK_MONOTONIC, &ref_time);
605 perf_evlist__start_workload(evsel_list);
609 while (!waitpid(child_pid, &status, WNOHANG)) {
610 nanosleep(&ts, NULL);
616 if (workload_exec_errno) {
617 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
618 pr_err("Workload failed: %s\n", emsg);
622 if (WIFSIGNALED(status))
623 psignal(WTERMSIG(status), argv[0]);
627 nanosleep(&ts, NULL);
635 update_stats(&walltime_nsecs_stats, t1 - t0);
639 return WEXITSTATUS(status);
642 static int run_perf_stat(int argc, const char **argv)
647 ret = system(pre_cmd);
655 ret = __run_perf_stat(argc, argv);
660 ret = system(post_cmd);
668 static void print_running(u64 run, u64 ena)
671 fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
675 ena ? 100.0 * run / ena : 100.0);
676 } else if (run != ena) {
677 fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
681 static void print_noise_pct(double total, double avg)
683 double pct = rel_stddev_stats(total, avg);
686 fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
688 fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
691 static void print_noise(struct perf_evsel *evsel, double avg)
693 struct perf_stat_evsel *ps;
699 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
702 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
704 switch (stat_config.aggr_mode) {
706 fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
707 cpu_map__id_to_socket(id),
709 cpu_map__id_to_cpu(id),
716 fprintf(stat_config.output, "S%*d%s%*d%s",
725 fprintf(stat_config.output, "CPU%*d%s",
727 perf_evsel__cpus(evsel)->map[id], csv_sep);
730 fprintf(stat_config.output, "%*s-%*d%s",
732 thread_map__comm(evsel->threads, id),
734 thread_map__pid(evsel->threads, id),
750 struct perf_evsel *evsel;
753 #define METRIC_LEN 35
755 static void new_line_std(void *ctx)
757 struct outstate *os = ctx;
762 static void do_new_line_std(struct outstate *os)
765 fputs(os->prefix, os->fh);
766 aggr_printout(os->evsel, os->id, os->nr);
767 if (stat_config.aggr_mode == AGGR_NONE)
768 fprintf(os->fh, " ");
769 fprintf(os->fh, " ");
772 static void print_metric_std(void *ctx, const char *color, const char *fmt,
773 const char *unit, double val)
775 struct outstate *os = ctx;
778 bool newline = os->newline;
782 if (unit == NULL || fmt == NULL) {
783 fprintf(out, "%-*s", METRIC_LEN, "");
790 n = fprintf(out, " # ");
792 n += color_fprintf(out, color, fmt, val);
794 n += fprintf(out, fmt, val);
795 fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
798 static void new_line_csv(void *ctx)
800 struct outstate *os = ctx;
805 fprintf(os->fh, "%s%s", os->prefix, csv_sep);
806 aggr_printout(os->evsel, os->id, os->nr);
807 for (i = 0; i < os->nfields; i++)
808 fputs(csv_sep, os->fh);
811 static void print_metric_csv(void *ctx,
812 const char *color __maybe_unused,
813 const char *fmt, const char *unit, double val)
815 struct outstate *os = ctx;
817 char buf[64], *vals, *ends;
819 if (unit == NULL || fmt == NULL) {
820 fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
823 snprintf(buf, sizeof(buf), fmt, val);
825 while (isspace(*vals))
828 while (isdigit(*ends) || *ends == '.')
831 while (isspace(*unit))
833 fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
836 #define METRIC_ONLY_LEN 20
838 /* Filter out some columns that don't work well in metrics only mode */
840 static bool valid_only_metric(const char *unit)
844 if (strstr(unit, "/sec") ||
845 strstr(unit, "hz") ||
846 strstr(unit, "Hz") ||
847 strstr(unit, "CPUs utilized"))
852 static const char *fixunit(char *buf, struct perf_evsel *evsel,
855 if (!strncmp(unit, "of all", 6)) {
856 snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
863 static void print_metric_only(void *ctx, const char *color, const char *fmt,
864 const char *unit, double val)
866 struct outstate *os = ctx;
870 unsigned mlen = METRIC_ONLY_LEN;
872 if (!valid_only_metric(unit))
874 unit = fixunit(buf, os->evsel, unit);
876 n = color_fprintf(out, color, fmt, val);
878 n = fprintf(out, fmt, val);
879 if (n > METRIC_ONLY_LEN)
881 if (mlen < strlen(unit))
882 mlen = strlen(unit) + 1;
883 fprintf(out, "%*s", mlen - n, "");
886 static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
888 const char *unit, double val)
890 struct outstate *os = ctx;
892 char buf[64], *vals, *ends;
895 if (!valid_only_metric(unit))
897 unit = fixunit(tbuf, os->evsel, unit);
898 snprintf(buf, sizeof buf, fmt, val);
900 while (isspace(*vals))
903 while (isdigit(*ends) || *ends == '.')
906 fprintf(out, "%s%s", vals, csv_sep);
909 static void new_line_metric(void *ctx __maybe_unused)
913 static void print_metric_header(void *ctx, const char *color __maybe_unused,
914 const char *fmt __maybe_unused,
915 const char *unit, double val __maybe_unused)
917 struct outstate *os = ctx;
920 if (!valid_only_metric(unit))
922 unit = fixunit(tbuf, os->evsel, unit);
924 fprintf(os->fh, "%s%s", unit, csv_sep);
926 fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
929 static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
931 FILE *output = stat_config.output;
932 double msecs = avg / 1e6;
933 const char *fmt_v, *fmt_n;
936 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
937 fmt_n = csv_output ? "%s" : "%-25s";
939 aggr_printout(evsel, id, nr);
941 scnprintf(name, sizeof(name), "%s%s",
942 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
944 fprintf(output, fmt_v, msecs, csv_sep);
947 fprintf(output, "%s%s", evsel->unit, csv_sep);
949 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
951 fprintf(output, fmt_n, name);
954 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
957 static int first_shadow_cpu(struct perf_evsel *evsel, int id)
964 if (stat_config.aggr_mode == AGGR_NONE)
967 if (stat_config.aggr_mode == AGGR_GLOBAL)
970 for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
971 int cpu2 = perf_evsel__cpus(evsel)->map[i];
973 if (aggr_get_id(evsel_list->cpus, cpu2) == id)
979 static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
981 FILE *output = stat_config.output;
982 double sc = evsel->scale;
986 fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
989 fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s";
991 fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
994 aggr_printout(evsel, id, nr);
996 fprintf(output, fmt, avg, csv_sep);
999 fprintf(output, "%-*s%s",
1000 csv_output ? 0 : unit_width,
1001 evsel->unit, csv_sep);
1003 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1006 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1009 static void printout(int id, int nr, struct perf_evsel *counter, double uval,
1010 char *prefix, u64 run, u64 ena, double noise)
1012 struct perf_stat_output_ctx out;
1013 struct outstate os = {
1014 .fh = stat_config.output,
1015 .prefix = prefix ? prefix : "",
1020 print_metric_t pm = print_metric_std;
1024 nl = new_line_metric;
1026 pm = print_metric_only_csv;
1028 pm = print_metric_only;
1032 if (csv_output && !metric_only) {
1033 static int aggr_fields[] = {
1041 pm = print_metric_csv;
1044 os.nfields += aggr_fields[stat_config.aggr_mode];
1048 if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
1050 pm(&os, NULL, "", "", 0);
1053 aggr_printout(counter, id, nr);
1055 fprintf(stat_config.output, "%*s%s",
1056 csv_output ? 0 : 18,
1057 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1060 fprintf(stat_config.output, "%-*s%s",
1061 csv_output ? 0 : unit_width,
1062 counter->unit, csv_sep);
1064 fprintf(stat_config.output, "%*s",
1065 csv_output ? 0 : -25,
1066 perf_evsel__name(counter));
1069 fprintf(stat_config.output, "%s%s",
1070 csv_sep, counter->cgrp->name);
1073 pm(&os, NULL, NULL, "", 0);
1074 print_noise(counter, noise);
1075 print_running(run, ena);
1077 pm(&os, NULL, NULL, "", 0);
1083 else if (nsec_counter(counter))
1084 nsec_printout(id, nr, counter, uval);
1086 abs_printout(id, nr, counter, uval);
1088 out.print_metric = pm;
1092 if (csv_output && !metric_only) {
1093 print_noise(counter, noise);
1094 print_running(run, ena);
1097 perf_stat__print_shadow_stats(counter, uval,
1098 first_shadow_cpu(counter, id),
1100 if (!csv_output && !metric_only) {
1101 print_noise(counter, noise);
1102 print_running(run, ena);
1106 static void aggr_update_shadow(void)
1110 struct perf_evsel *counter;
1112 for (s = 0; s < aggr_map->nr; s++) {
1113 id = aggr_map->map[s];
1114 evlist__for_each(evsel_list, counter) {
1116 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1117 s2 = aggr_get_id(evsel_list->cpus, cpu);
1120 val += perf_counts(counter->counts, cpu, 0)->val;
1122 val = val * counter->scale;
1123 perf_stat__update_shadow_stats(counter, &val,
1124 first_shadow_cpu(counter, id));
1129 static void print_aggr(char *prefix)
1131 FILE *output = stat_config.output;
1132 struct perf_evsel *counter;
1133 int cpu, s, s2, id, nr;
1138 if (!(aggr_map || aggr_get_id))
1141 aggr_update_shadow();
1144 * With metric_only everything is on a single line.
1145 * Without each counter has its own line.
1147 for (s = 0; s < aggr_map->nr; s++) {
1148 if (prefix && metric_only)
1149 fprintf(output, "%s", prefix);
1151 id = aggr_map->map[s];
1153 evlist__for_each(evsel_list, counter) {
1154 val = ena = run = 0;
1156 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1157 s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
1160 val += perf_counts(counter->counts, cpu, 0)->val;
1161 ena += perf_counts(counter->counts, cpu, 0)->ena;
1162 run += perf_counts(counter->counts, cpu, 0)->run;
1165 if (first && metric_only) {
1167 aggr_printout(counter, id, nr);
1169 if (prefix && !metric_only)
1170 fprintf(output, "%s", prefix);
1172 uval = val * counter->scale;
1173 printout(id, nr, counter, uval, prefix, run, ena, 1.0);
1175 fputc('\n', output);
1178 fputc('\n', output);
1182 static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
1184 FILE *output = stat_config.output;
1185 int nthreads = thread_map__nr(counter->threads);
1186 int ncpus = cpu_map__nr(counter->cpus);
1190 for (thread = 0; thread < nthreads; thread++) {
1191 u64 ena = 0, run = 0, val = 0;
1193 for (cpu = 0; cpu < ncpus; cpu++) {
1194 val += perf_counts(counter->counts, cpu, thread)->val;
1195 ena += perf_counts(counter->counts, cpu, thread)->ena;
1196 run += perf_counts(counter->counts, cpu, thread)->run;
1200 fprintf(output, "%s", prefix);
1202 uval = val * counter->scale;
1203 printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
1204 fputc('\n', output);
1209 * Print out the results of a single counter:
1210 * aggregated counts in system-wide mode
1212 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1214 FILE *output = stat_config.output;
1215 struct perf_stat_evsel *ps = counter->priv;
1216 double avg = avg_stats(&ps->res_stats[0]);
1218 double avg_enabled, avg_running;
1220 avg_enabled = avg_stats(&ps->res_stats[1]);
1221 avg_running = avg_stats(&ps->res_stats[2]);
1223 if (prefix && !metric_only)
1224 fprintf(output, "%s", prefix);
1226 uval = avg * counter->scale;
1227 printout(-1, 0, counter, uval, prefix, avg_running, avg_enabled, avg);
1229 fprintf(output, "\n");
1233 * Print out the results of a single counter:
1234 * does not use aggregated count in system-wide
1236 static void print_counter(struct perf_evsel *counter, char *prefix)
1238 FILE *output = stat_config.output;
1243 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1244 val = perf_counts(counter->counts, cpu, 0)->val;
1245 ena = perf_counts(counter->counts, cpu, 0)->ena;
1246 run = perf_counts(counter->counts, cpu, 0)->run;
1249 fprintf(output, "%s", prefix);
1251 uval = val * counter->scale;
1252 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1254 fputc('\n', output);
1258 static void print_no_aggr_metric(char *prefix)
1262 struct perf_evsel *counter;
1266 nrcpus = evsel_list->cpus->nr;
1267 for (cpu = 0; cpu < nrcpus; cpu++) {
1271 fputs(prefix, stat_config.output);
1272 evlist__for_each(evsel_list, counter) {
1274 aggr_printout(counter, cpu, 0);
1277 val = perf_counts(counter->counts, cpu, 0)->val;
1278 ena = perf_counts(counter->counts, cpu, 0)->ena;
1279 run = perf_counts(counter->counts, cpu, 0)->run;
1281 uval = val * counter->scale;
1282 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1284 fputc('\n', stat_config.output);
1288 static int aggr_header_lens[] = {
1296 static void print_metric_headers(char *prefix)
1298 struct perf_stat_output_ctx out;
1299 struct perf_evsel *counter;
1300 struct outstate os = {
1301 .fh = stat_config.output
1305 fprintf(stat_config.output, "%s", prefix);
1308 fprintf(stat_config.output, "%*s",
1309 aggr_header_lens[stat_config.aggr_mode], "");
1311 /* Print metrics headers only */
1312 evlist__for_each(evsel_list, counter) {
1315 out.print_metric = print_metric_header;
1316 out.new_line = new_line_metric;
1318 perf_stat__print_shadow_stats(counter, 0,
1322 fputc('\n', stat_config.output);
1325 static void print_interval(char *prefix, struct timespec *ts)
1327 FILE *output = stat_config.output;
1328 static int num_print_interval;
1330 sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
1332 if (num_print_interval == 0 && !csv_output && !metric_only) {
1333 switch (stat_config.aggr_mode) {
1335 fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit");
1338 fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit");
1341 fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit");
1344 fprintf(output, "# time comm-pid counts %*s events\n", unit_width, "unit");
1348 fprintf(output, "# time counts %*s events\n", unit_width, "unit");
1354 if (++num_print_interval == 25)
1355 num_print_interval = 0;
1358 static void print_header(int argc, const char **argv)
1360 FILE *output = stat_config.output;
1366 fprintf(output, "\n");
1367 fprintf(output, " Performance counter stats for ");
1368 if (target.system_wide)
1369 fprintf(output, "\'system wide");
1370 else if (target.cpu_list)
1371 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1372 else if (!target__has_task(&target)) {
1373 fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1374 for (i = 1; argv && (i < argc); i++)
1375 fprintf(output, " %s", argv[i]);
1376 } else if (target.pid)
1377 fprintf(output, "process id \'%s", target.pid);
1379 fprintf(output, "thread id \'%s", target.tid);
1381 fprintf(output, "\'");
1383 fprintf(output, " (%d runs)", run_count);
1384 fprintf(output, ":\n\n");
1388 static void print_footer(void)
1390 FILE *output = stat_config.output;
1393 fprintf(output, "\n");
1394 fprintf(output, " %17.9f seconds time elapsed",
1395 avg_stats(&walltime_nsecs_stats)/1e9);
1396 if (run_count > 1) {
1397 fprintf(output, " ");
1398 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1399 avg_stats(&walltime_nsecs_stats));
1401 fprintf(output, "\n\n");
1404 static void print_counters(struct timespec *ts, int argc, const char **argv)
1406 int interval = stat_config.interval;
1407 struct perf_evsel *counter;
1408 char buf[64], *prefix = NULL;
1410 /* Do not print anything if we record to the pipe. */
1411 if (STAT_RECORD && perf_stat.file.is_pipe)
1415 print_interval(prefix = buf, ts);
1417 print_header(argc, argv);
1420 static int num_print_iv;
1422 if (num_print_iv == 0)
1423 print_metric_headers(prefix);
1424 if (num_print_iv++ == 25)
1426 if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
1427 fprintf(stat_config.output, "%s", prefix);
1430 switch (stat_config.aggr_mode) {
1436 evlist__for_each(evsel_list, counter)
1437 print_aggr_thread(counter, prefix);
1440 evlist__for_each(evsel_list, counter)
1441 print_counter_aggr(counter, prefix);
1443 fputc('\n', stat_config.output);
1447 print_no_aggr_metric(prefix);
1449 evlist__for_each(evsel_list, counter)
1450 print_counter(counter, prefix);
1458 if (!interval && !csv_output)
1461 fflush(stat_config.output);
1464 static volatile int signr = -1;
1466 static void skip_signal(int signo)
1468 if ((child_pid == -1) || stat_config.interval)
1473 * render child_pid harmless
1474 * won't send SIGTERM to a random
1475 * process in case of race condition
1476 * and fast PID recycling
1481 static void sig_atexit(void)
1486 * avoid race condition with SIGCHLD handler
1487 * in skip_signal() which is modifying child_pid
1488 * goal is to avoid send SIGTERM to a random
1492 sigaddset(&set, SIGCHLD);
1493 sigprocmask(SIG_BLOCK, &set, &oset);
1495 if (child_pid != -1)
1496 kill(child_pid, SIGTERM);
1498 sigprocmask(SIG_SETMASK, &oset, NULL);
1503 signal(signr, SIG_DFL);
1504 kill(getpid(), signr);
1507 static int stat__set_big_num(const struct option *opt __maybe_unused,
1508 const char *s __maybe_unused, int unset)
1510 big_num_opt = unset ? 0 : 1;
1514 static const struct option stat_options[] = {
1515 OPT_BOOLEAN('T', "transaction", &transaction_run,
1516 "hardware transaction statistics"),
1517 OPT_CALLBACK('e', "event", &evsel_list, "event",
1518 "event selector. use 'perf list' to list available events",
1519 parse_events_option),
1520 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1521 "event filter", parse_filter),
1522 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1523 "child tasks do not inherit counters"),
1524 OPT_STRING('p', "pid", &target.pid, "pid",
1525 "stat events on existing process id"),
1526 OPT_STRING('t', "tid", &target.tid, "tid",
1527 "stat events on existing thread id"),
1528 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1529 "system-wide collection from all CPUs"),
1530 OPT_BOOLEAN('g', "group", &group,
1531 "put the counters into a counter group"),
1532 OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
1533 OPT_INCR('v', "verbose", &verbose,
1534 "be more verbose (show counter open errors, etc)"),
1535 OPT_INTEGER('r', "repeat", &run_count,
1536 "repeat command and print average + stddev (max: 100, forever: 0)"),
1537 OPT_BOOLEAN('n', "null", &null_run,
1538 "null run - dont start any counters"),
1539 OPT_INCR('d', "detailed", &detailed_run,
1540 "detailed run - start a lot of events"),
1541 OPT_BOOLEAN('S', "sync", &sync_run,
1542 "call sync() before starting a run"),
1543 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1544 "print large numbers with thousands\' separators",
1546 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1547 "list of cpus to monitor in system-wide"),
1548 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1549 "disable CPU count aggregation", AGGR_NONE),
1550 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1551 "print counts with custom separator"),
1552 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1553 "monitor event in cgroup name only", parse_cgroups),
1554 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1555 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1556 OPT_INTEGER(0, "log-fd", &output_fd,
1557 "log output to fd, instead of stderr"),
1558 OPT_STRING(0, "pre", &pre_cmd, "command",
1559 "command to run prior to the measured command"),
1560 OPT_STRING(0, "post", &post_cmd, "command",
1561 "command to run after to the measured command"),
1562 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1563 "print counts at regular interval in ms (>= 10)"),
1564 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1565 "aggregate counts per processor socket", AGGR_SOCKET),
1566 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1567 "aggregate counts per physical processor core", AGGR_CORE),
1568 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1569 "aggregate counts per thread", AGGR_THREAD),
1570 OPT_UINTEGER('D', "delay", &initial_delay,
1571 "ms to wait before starting measurement after program start"),
1572 OPT_BOOLEAN(0, "metric-only", &metric_only,
1573 "Only print computed metrics. No raw values"),
1577 static int perf_stat__get_socket(struct cpu_map *map, int cpu)
1579 return cpu_map__get_socket(map, cpu, NULL);
1582 static int perf_stat__get_core(struct cpu_map *map, int cpu)
1584 return cpu_map__get_core(map, cpu, NULL);
1587 static int cpu_map__get_max(struct cpu_map *map)
1591 for (i = 0; i < map->nr; i++) {
1592 if (map->map[i] > max)
1599 static struct cpu_map *cpus_aggr_map;
1601 static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
1608 cpu = map->map[idx];
1610 if (cpus_aggr_map->map[cpu] == -1)
1611 cpus_aggr_map->map[cpu] = get_id(map, idx);
1613 return cpus_aggr_map->map[cpu];
1616 static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
1618 return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
1621 static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
1623 return perf_stat__get_aggr(perf_stat__get_core, map, idx);
1626 static int perf_stat_init_aggr_mode(void)
1630 switch (stat_config.aggr_mode) {
1632 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1633 perror("cannot build socket map");
1636 aggr_get_id = perf_stat__get_socket_cached;
1639 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1640 perror("cannot build core map");
1643 aggr_get_id = perf_stat__get_core_cached;
1654 * The evsel_list->cpus is the base we operate on,
1655 * taking the highest cpu number to be the size of
1656 * the aggregation translate cpumap.
1658 nr = cpu_map__get_max(evsel_list->cpus);
1659 cpus_aggr_map = cpu_map__empty_new(nr + 1);
1660 return cpus_aggr_map ? 0 : -ENOMEM;
1663 static void perf_stat__exit_aggr_mode(void)
1665 cpu_map__put(aggr_map);
1666 cpu_map__put(cpus_aggr_map);
1668 cpus_aggr_map = NULL;
1671 static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
1678 cpu = map->map[idx];
1680 if (cpu >= env->nr_cpus_online)
1686 static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
1688 struct perf_env *env = data;
1689 int cpu = perf_env__get_cpu(env, map, idx);
1691 return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
1694 static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
1696 struct perf_env *env = data;
1697 int core = -1, cpu = perf_env__get_cpu(env, map, idx);
1700 int socket_id = env->cpu[cpu].socket_id;
1703 * Encode socket in upper 16 bits
1704 * core_id is relative to socket, and
1705 * we need a global id. So we combine
1708 core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
1714 static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
1715 struct cpu_map **sockp)
1717 return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
1720 static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
1721 struct cpu_map **corep)
1723 return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1726 static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
1728 return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1731 static int perf_stat__get_core_file(struct cpu_map *map, int idx)
1733 return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1736 static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1738 struct perf_env *env = &st->session->header.env;
1740 switch (stat_config.aggr_mode) {
1742 if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
1743 perror("cannot build socket map");
1746 aggr_get_id = perf_stat__get_socket_file;
1749 if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
1750 perror("cannot build core map");
1753 aggr_get_id = perf_stat__get_core_file;
1767 * Add default attributes, if there were no attributes specified or
1768 * if -d/--detailed, -d -d or -d -d -d is used:
1770 static int add_default_attributes(void)
1772 struct perf_event_attr default_attrs0[] = {
1774 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1775 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1776 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1777 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1779 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1781 struct perf_event_attr frontend_attrs[] = {
1782 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1784 struct perf_event_attr backend_attrs[] = {
1785 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1787 struct perf_event_attr default_attrs1[] = {
1788 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1789 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1790 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1795 * Detailed stats (-d), covering the L1 and last level data caches:
1797 struct perf_event_attr detailed_attrs[] = {
1799 { .type = PERF_TYPE_HW_CACHE,
1801 PERF_COUNT_HW_CACHE_L1D << 0 |
1802 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1803 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1805 { .type = PERF_TYPE_HW_CACHE,
1807 PERF_COUNT_HW_CACHE_L1D << 0 |
1808 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1809 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1811 { .type = PERF_TYPE_HW_CACHE,
1813 PERF_COUNT_HW_CACHE_LL << 0 |
1814 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1815 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1817 { .type = PERF_TYPE_HW_CACHE,
1819 PERF_COUNT_HW_CACHE_LL << 0 |
1820 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1821 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1825 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1827 struct perf_event_attr very_detailed_attrs[] = {
1829 { .type = PERF_TYPE_HW_CACHE,
1831 PERF_COUNT_HW_CACHE_L1I << 0 |
1832 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1833 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1835 { .type = PERF_TYPE_HW_CACHE,
1837 PERF_COUNT_HW_CACHE_L1I << 0 |
1838 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1839 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1841 { .type = PERF_TYPE_HW_CACHE,
1843 PERF_COUNT_HW_CACHE_DTLB << 0 |
1844 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1845 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1847 { .type = PERF_TYPE_HW_CACHE,
1849 PERF_COUNT_HW_CACHE_DTLB << 0 |
1850 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1851 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1853 { .type = PERF_TYPE_HW_CACHE,
1855 PERF_COUNT_HW_CACHE_ITLB << 0 |
1856 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1857 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1859 { .type = PERF_TYPE_HW_CACHE,
1861 PERF_COUNT_HW_CACHE_ITLB << 0 |
1862 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1863 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1868 * Very, very detailed stats (-d -d -d), adding prefetch events:
1870 struct perf_event_attr very_very_detailed_attrs[] = {
1872 { .type = PERF_TYPE_HW_CACHE,
1874 PERF_COUNT_HW_CACHE_L1D << 0 |
1875 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1876 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1878 { .type = PERF_TYPE_HW_CACHE,
1880 PERF_COUNT_HW_CACHE_L1D << 0 |
1881 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1882 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1885 /* Set attrs if no event is selected and !null_run: */
1889 if (transaction_run) {
1891 if (pmu_have_event("cpu", "cycles-ct") &&
1892 pmu_have_event("cpu", "el-start"))
1893 err = parse_events(evsel_list, transaction_attrs, NULL);
1895 err = parse_events(evsel_list, transaction_limited_attrs, NULL);
1897 fprintf(stderr, "Cannot set up transaction events\n");
1903 if (!evsel_list->nr_entries) {
1904 if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
1906 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
1907 if (perf_evlist__add_default_attrs(evsel_list,
1908 frontend_attrs) < 0)
1911 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
1912 if (perf_evlist__add_default_attrs(evsel_list,
1916 if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
1920 /* Detailed events get appended to the event list: */
1922 if (detailed_run < 1)
1925 /* Append detailed run extra attributes: */
1926 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1929 if (detailed_run < 2)
1932 /* Append very detailed run extra attributes: */
1933 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1936 if (detailed_run < 3)
1939 /* Append very, very detailed run extra attributes: */
1940 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1943 static const char * const stat_record_usage[] = {
1944 "perf stat record [<options>]",
1948 static void init_features(struct perf_session *session)
1952 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
1953 perf_header__set_feat(&session->header, feat);
1955 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
1956 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
1957 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
1958 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
1961 static int __cmd_record(int argc, const char **argv)
1963 struct perf_session *session;
1964 struct perf_data_file *file = &perf_stat.file;
1966 argc = parse_options(argc, argv, stat_options, stat_record_usage,
1967 PARSE_OPT_STOP_AT_NON_OPTION);
1970 file->path = output_name;
1972 if (run_count != 1 || forever) {
1973 pr_err("Cannot use -r option with perf stat record.\n");
1977 session = perf_session__new(file, false, NULL);
1978 if (session == NULL) {
1979 pr_err("Perf session creation failed.\n");
1983 init_features(session);
1985 session->evlist = evsel_list;
1986 perf_stat.session = session;
1987 perf_stat.record = true;
1991 static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
1992 union perf_event *event,
1993 struct perf_session *session)
1995 struct stat_round_event *round = &event->stat_round;
1996 struct perf_evsel *counter;
1997 struct timespec tsh, *ts = NULL;
1998 const char **argv = session->header.env.cmdline_argv;
1999 int argc = session->header.env.nr_cmdline;
2001 evlist__for_each(evsel_list, counter)
2002 perf_stat_process_counter(&stat_config, counter);
2004 if (round->type == PERF_STAT_ROUND_TYPE__FINAL)
2005 update_stats(&walltime_nsecs_stats, round->time);
2007 if (stat_config.interval && round->time) {
2008 tsh.tv_sec = round->time / NSECS_PER_SEC;
2009 tsh.tv_nsec = round->time % NSECS_PER_SEC;
2013 print_counters(ts, argc, argv);
2018 int process_stat_config_event(struct perf_tool *tool __maybe_unused,
2019 union perf_event *event,
2020 struct perf_session *session __maybe_unused)
2022 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2024 perf_event__read_stat_config(&stat_config, &event->stat_config);
2026 if (cpu_map__empty(st->cpus)) {
2027 if (st->aggr_mode != AGGR_UNSET)
2028 pr_warning("warning: processing task data, aggregation mode not set\n");
2032 if (st->aggr_mode != AGGR_UNSET)
2033 stat_config.aggr_mode = st->aggr_mode;
2035 if (perf_stat.file.is_pipe)
2036 perf_stat_init_aggr_mode();
2038 perf_stat_init_aggr_mode_file(st);
2043 static int set_maps(struct perf_stat *st)
2045 if (!st->cpus || !st->threads)
2048 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2051 perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
2053 if (perf_evlist__alloc_stats(evsel_list, true))
2056 st->maps_allocated = true;
2061 int process_thread_map_event(struct perf_tool *tool __maybe_unused,
2062 union perf_event *event,
2063 struct perf_session *session __maybe_unused)
2065 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2068 pr_warning("Extra thread map event, ignoring.\n");
2072 st->threads = thread_map__new_event(&event->thread_map);
2076 return set_maps(st);
2080 int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
2081 union perf_event *event,
2082 struct perf_session *session __maybe_unused)
2084 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2085 struct cpu_map *cpus;
2088 pr_warning("Extra cpu map event, ignoring.\n");
2092 cpus = cpu_map__new_data(&event->cpu_map.data);
2097 return set_maps(st);
2100 static const char * const stat_report_usage[] = {
2101 "perf stat report [<options>]",
2105 static struct perf_stat perf_stat = {
2107 .attr = perf_event__process_attr,
2108 .event_update = perf_event__process_event_update,
2109 .thread_map = process_thread_map_event,
2110 .cpu_map = process_cpu_map_event,
2111 .stat_config = process_stat_config_event,
2112 .stat = perf_event__process_stat_event,
2113 .stat_round = process_stat_round_event,
2115 .aggr_mode = AGGR_UNSET,
2118 static int __cmd_report(int argc, const char **argv)
2120 struct perf_session *session;
2121 const struct option options[] = {
2122 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2123 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2124 "aggregate counts per processor socket", AGGR_SOCKET),
2125 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2126 "aggregate counts per physical processor core", AGGR_CORE),
2127 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2128 "disable CPU count aggregation", AGGR_NONE),
2134 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2136 if (!input_name || !strlen(input_name)) {
2137 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2140 input_name = "perf.data";
2143 perf_stat.file.path = input_name;
2144 perf_stat.file.mode = PERF_DATA_MODE_READ;
2146 session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);
2147 if (session == NULL)
2150 perf_stat.session = session;
2151 stat_config.output = stderr;
2152 evsel_list = session->evlist;
2154 ret = perf_session__process_events(session);
2158 perf_session__delete(session);
2162 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
2164 const char * const stat_usage[] = {
2165 "perf stat [<options>] [<command>]",
2168 int status = -EINVAL, run_idx;
2170 FILE *output = stderr;
2171 unsigned int interval;
2172 const char * const stat_subcommands[] = { "record", "report" };
2174 setlocale(LC_ALL, "");
2176 evsel_list = perf_evlist__new();
2177 if (evsel_list == NULL)
2180 parse_events__shrink_config_terms();
2181 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2182 (const char **) stat_usage,
2183 PARSE_OPT_STOP_AT_NON_OPTION);
2184 perf_stat__init_shadow_stats();
2188 if (!strcmp(csv_sep, "\\t"))
2191 csv_sep = DEFAULT_SEPARATOR;
2193 if (argc && !strncmp(argv[0], "rec", 3)) {
2194 argc = __cmd_record(argc, argv);
2197 } else if (argc && !strncmp(argv[0], "rep", 3))
2198 return __cmd_report(argc, argv);
2200 interval = stat_config.interval;
2203 * For record command the -o is already taken care of.
2205 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2208 if (output_name && output_fd) {
2209 fprintf(stderr, "cannot use both --output and --log-fd\n");
2210 parse_options_usage(stat_usage, stat_options, "o", 1);
2211 parse_options_usage(NULL, stat_options, "log-fd", 0);
2215 if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2216 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2220 if (metric_only && run_count > 1) {
2221 fprintf(stderr, "--metric-only is not supported with -r\n");
2225 if (output_fd < 0) {
2226 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2227 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2233 mode = append_file ? "a" : "w";
2235 output = fopen(output_name, mode);
2237 perror("failed to create output file");
2240 clock_gettime(CLOCK_REALTIME, &tm);
2241 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2242 } else if (output_fd > 0) {
2243 mode = append_file ? "a" : "w";
2244 output = fdopen(output_fd, mode);
2246 perror("Failed opening logfd");
2251 stat_config.output = output;
2254 * let the spreadsheet do the pretty-printing
2257 /* User explicitly passed -B? */
2258 if (big_num_opt == 1) {
2259 fprintf(stderr, "-B option not supported with -x\n");
2260 parse_options_usage(stat_usage, stat_options, "B", 1);
2261 parse_options_usage(NULL, stat_options, "x", 1);
2263 } else /* Nope, so disable big number formatting */
2265 } else if (big_num_opt == 0) /* User passed --no-big-num */
2268 if (!argc && target__none(&target))
2269 usage_with_options(stat_usage, stat_options);
2271 if (run_count < 0) {
2272 pr_err("Run count must be a positive number\n");
2273 parse_options_usage(stat_usage, stat_options, "r", 1);
2275 } else if (run_count == 0) {
2280 if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
2281 fprintf(stderr, "The --per-thread option is only available "
2282 "when monitoring via -p -t options.\n");
2283 parse_options_usage(NULL, stat_options, "p", 1);
2284 parse_options_usage(NULL, stat_options, "t", 1);
2289 * no_aggr, cgroup are for system-wide only
2290 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2292 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2293 stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
2294 !target__has_cpu(&target)) {
2295 fprintf(stderr, "both cgroup and no-aggregation "
2296 "modes only available in system-wide mode\n");
2298 parse_options_usage(stat_usage, stat_options, "G", 1);
2299 parse_options_usage(NULL, stat_options, "A", 1);
2300 parse_options_usage(NULL, stat_options, "a", 1);
2304 if (add_default_attributes())
2307 target__validate(&target);
2309 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
2310 if (target__has_task(&target)) {
2311 pr_err("Problems finding threads of monitor\n");
2312 parse_options_usage(stat_usage, stat_options, "p", 1);
2313 parse_options_usage(NULL, stat_options, "t", 1);
2314 } else if (target__has_cpu(&target)) {
2315 perror("failed to parse CPUs map");
2316 parse_options_usage(stat_usage, stat_options, "C", 1);
2317 parse_options_usage(NULL, stat_options, "a", 1);
2323 * Initialize thread_map with comm names,
2324 * so we could print it out on output.
2326 if (stat_config.aggr_mode == AGGR_THREAD)
2327 thread_map__read_comms(evsel_list->threads);
2329 if (interval && interval < 100) {
2330 if (interval < 10) {
2331 pr_err("print interval must be >= 10ms\n");
2332 parse_options_usage(stat_usage, stat_options, "I", 1);
2335 pr_warning("print interval < 100ms. "
2336 "The overhead percentage could be high in some cases. "
2337 "Please proceed with caution.\n");
2340 if (perf_evlist__alloc_stats(evsel_list, interval))
2343 if (perf_stat_init_aggr_mode())
2347 * We dont want to block the signals - that would cause
2348 * child tasks to inherit that and Ctrl-C would not work.
2349 * What we want is for Ctrl-C to work in the exec()-ed
2350 * task, but being ignored by perf stat itself:
2354 signal(SIGINT, skip_signal);
2355 signal(SIGCHLD, skip_signal);
2356 signal(SIGALRM, skip_signal);
2357 signal(SIGABRT, skip_signal);
2360 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
2361 if (run_count != 1 && verbose)
2362 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2365 status = run_perf_stat(argc, argv);
2366 if (forever && status != -1) {
2367 print_counters(NULL, argc, argv);
2368 perf_stat__reset_stats();
2372 if (!forever && status != -1 && !interval)
2373 print_counters(NULL, argc, argv);
2377 * We synthesize the kernel mmap record just so that older tools
2378 * don't emit warnings about not being able to resolve symbols
2379 * due to /proc/sys/kernel/kptr_restrict settings and instear provide
2380 * a saner message about no samples being in the perf.data file.
2382 * This also serves to suppress a warning about f_header.data.size == 0
2383 * in header.c at the moment 'perf stat record' gets introduced, which
2384 * is not really needed once we start adding the stat specific PERF_RECORD_
2385 * records, but the need to suppress the kptr_restrict messages in older
2386 * tools remain -acme
2388 int fd = perf_data_file__fd(&perf_stat.file);
2389 int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2390 process_synthesized_event,
2391 &perf_stat.session->machines.host);
2393 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2394 "older tools may produce warnings about this file\n.");
2398 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2399 pr_err("failed to write stat round event\n");
2402 if (!perf_stat.file.is_pipe) {
2403 perf_stat.session->header.data_size += perf_stat.bytes_written;
2404 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2407 perf_session__delete(perf_stat.session);
2410 perf_stat__exit_aggr_mode();
2411 perf_evlist__free_stats(evsel_list);
2413 perf_evlist__delete(evsel_list);