Commit | Line | Data |
---|---|---|
ddcacfa0 | 1 | /* |
bf9e1876 IM |
2 | * builtin-stat.c |
3 | * | |
4 | * Builtin stat command: Give a precise performance counters summary | |
5 | * overview about any workload, CPU or specific PID. | |
6 | * | |
7 | * Sample output: | |
ddcacfa0 | 8 | |
bf9e1876 IM |
9 | $ perf stat ~/hackbench 10 |
10 | Time: 0.104 | |
ddcacfa0 | 11 | |
bf9e1876 | 12 | Performance counter stats for '/home/mingo/hackbench': |
ddcacfa0 | 13 | |
bf9e1876 IM |
14 | 1255.538611 task clock ticks # 10.143 CPU utilization factor |
15 | 54011 context switches # 0.043 M/sec | |
16 | 385 CPU migrations # 0.000 M/sec | |
17 | 17755 pagefaults # 0.014 M/sec | |
18 | 3808323185 CPU cycles # 3033.219 M/sec | |
19 | 1575111190 instructions # 1254.530 M/sec | |
20 | 17367895 cache references # 13.833 M/sec | |
21 | 7674421 cache misses # 6.112 M/sec | |
ddcacfa0 | 22 | |
bf9e1876 | 23 | Wall-clock time elapsed: 123.786620 msecs |
ddcacfa0 | 24 | |
5242519b IM |
25 | * |
26 | * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com> | |
27 | * | |
28 | * Improvements and fixes by: | |
29 | * | |
30 | * Arjan van de Ven <arjan@linux.intel.com> | |
31 | * Yanmin Zhang <yanmin.zhang@intel.com> | |
32 | * Wu Fengguang <fengguang.wu@intel.com> | |
33 | * Mike Galbraith <efault@gmx.de> | |
34 | * Paul Mackerras <paulus@samba.org> | |
6e750a8f | 35 | * Jaswinder Singh Rajput <jaswinder@kernel.org> |
5242519b IM |
36 | * |
37 | * Released under the GPL v2. (and only v2, not any later version) | |
ddcacfa0 IM |
38 | */ |
39 | ||
1a482f38 | 40 | #include "perf.h" |
16f762a2 | 41 | #include "builtin.h" |
148be2c1 | 42 | #include "util/util.h" |
5242519b IM |
43 | #include "util/parse-options.h" |
44 | #include "util/parse-events.h" | |
8f28827a FW |
45 | #include "util/event.h" |
46 | #include "util/debug.h" | |
ddcacfa0 | 47 | |
ddcacfa0 | 48 | #include <sys/prctl.h> |
42202dd5 | 49 | #include <math.h> |
16c8a109 | 50 | |
cdd6c482 | 51 | static struct perf_event_attr default_attrs[] = { |
ddcacfa0 | 52 | |
f4dbfa8f PZ |
53 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, |
54 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES}, | |
55 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, | |
56 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, | |
57 | ||
58 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, | |
59 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, | |
60 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_REFERENCES}, | |
61 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_MISSES }, | |
62 | ||
ddcacfa0 | 63 | }; |
5242519b | 64 | |
a21ca2ca | 65 | static int system_wide = 0; |
f37a291c | 66 | static unsigned int nr_cpus = 0; |
3d632595 | 67 | static int run_idx = 0; |
ddcacfa0 | 68 | |
3d632595 JSR |
69 | static int run_count = 1; |
70 | static int inherit = 1; | |
66cf7829 | 71 | static int scale = 1; |
3d632595 | 72 | static int target_pid = -1; |
0cfb7a13 | 73 | static int null_run = 0; |
ddcacfa0 | 74 | |
3d632595 | 75 | static int fd[MAX_NR_CPUS][MAX_COUNTERS]; |
42202dd5 | 76 | |
63d40deb | 77 | static int event_scaled[MAX_COUNTERS]; |
3d632595 | 78 | |
506d4bc8 PZ |
79 | struct stats |
80 | { | |
8a02631a | 81 | double n, mean, M2; |
506d4bc8 | 82 | }; |
42202dd5 | 83 | |
9e9772c4 PZ |
84 | static void update_stats(struct stats *stats, u64 val) |
85 | { | |
8a02631a | 86 | double delta; |
9e9772c4 | 87 | |
8a02631a PZ |
88 | stats->n++; |
89 | delta = val - stats->mean; | |
90 | stats->mean += delta / stats->n; | |
91 | stats->M2 += delta*(val - stats->mean); | |
9e9772c4 PZ |
92 | } |
93 | ||
506d4bc8 PZ |
94 | static double avg_stats(struct stats *stats) |
95 | { | |
8a02631a | 96 | return stats->mean; |
506d4bc8 | 97 | } |
42202dd5 | 98 | |
506d4bc8 | 99 | /* |
63d40deb PZ |
100 | * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance |
101 | * | |
8a02631a PZ |
102 | * (\Sum n_i^2) - ((\Sum n_i)^2)/n |
103 | * s^2 = ------------------------------- | |
104 | * n - 1 | |
63d40deb PZ |
105 | * |
106 | * http://en.wikipedia.org/wiki/Stddev | |
107 | * | |
108 | * The std dev of the mean is related to the std dev by: | |
109 | * | |
110 | * s | |
111 | * s_mean = ------- | |
112 | * sqrt(n) | |
113 | * | |
506d4bc8 PZ |
114 | */ |
115 | static double stddev_stats(struct stats *stats) | |
116 | { | |
8a02631a PZ |
117 | double variance = stats->M2 / (stats->n - 1); |
118 | double variance_mean = variance / stats->n; | |
42202dd5 | 119 | |
63d40deb | 120 | return sqrt(variance_mean); |
506d4bc8 | 121 | } |
42202dd5 | 122 | |
506d4bc8 | 123 | struct stats event_res_stats[MAX_COUNTERS][3]; |
506d4bc8 PZ |
124 | struct stats runtime_nsecs_stats; |
125 | struct stats walltime_nsecs_stats; | |
126 | struct stats runtime_cycles_stats; | |
be1ac0d8 | 127 | |
b9ebdcc0 JSR |
128 | #define MATCH_EVENT(t, c, counter) \ |
129 | (attrs[counter].type == PERF_TYPE_##t && \ | |
130 | attrs[counter].config == PERF_COUNT_##c) | |
131 | ||
cca03c0a | 132 | #define ERR_PERF_OPEN \ |
cdd6c482 | 133 | "Error: counter %d, sys_perf_event_open() syscall returned with %d (%s)\n" |
cca03c0a | 134 | |
051ae7f7 | 135 | static void create_perf_stat_counter(int counter, int pid) |
ddcacfa0 | 136 | { |
cdd6c482 | 137 | struct perf_event_attr *attr = attrs + counter; |
16c8a109 | 138 | |
ddcacfa0 | 139 | if (scale) |
a21ca2ca IM |
140 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
141 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
ddcacfa0 IM |
142 | |
143 | if (system_wide) { | |
f37a291c IM |
144 | unsigned int cpu; |
145 | ||
cca03c0a | 146 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
cdd6c482 | 147 | fd[cpu][counter] = sys_perf_event_open(attr, -1, cpu, -1, 0); |
cca03c0a JSR |
148 | if (fd[cpu][counter] < 0 && verbose) |
149 | fprintf(stderr, ERR_PERF_OPEN, counter, | |
150 | fd[cpu][counter], strerror(errno)); | |
ddcacfa0 IM |
151 | } |
152 | } else { | |
57e7986e PM |
153 | attr->inherit = inherit; |
154 | attr->disabled = 1; | |
155 | attr->enable_on_exec = 1; | |
ddcacfa0 | 156 | |
cdd6c482 | 157 | fd[0][counter] = sys_perf_event_open(attr, pid, -1, -1, 0); |
cca03c0a JSR |
158 | if (fd[0][counter] < 0 && verbose) |
159 | fprintf(stderr, ERR_PERF_OPEN, counter, | |
160 | fd[0][counter], strerror(errno)); | |
ddcacfa0 IM |
161 | } |
162 | } | |
163 | ||
c04f5e5d IM |
164 | /* |
165 | * Does the counter have nsecs as a unit? | |
166 | */ | |
167 | static inline int nsec_counter(int counter) | |
168 | { | |
b9ebdcc0 JSR |
169 | if (MATCH_EVENT(SOFTWARE, SW_CPU_CLOCK, counter) || |
170 | MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) | |
c04f5e5d IM |
171 | return 1; |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
176 | /* | |
2996f5dd | 177 | * Read out the results of a single counter: |
c04f5e5d | 178 | */ |
2996f5dd | 179 | static void read_counter(int counter) |
c04f5e5d | 180 | { |
849abde9 | 181 | u64 count[3], single_count[3]; |
f37a291c IM |
182 | unsigned int cpu; |
183 | size_t res, nv; | |
c04f5e5d | 184 | int scaled; |
9e9772c4 | 185 | int i; |
c04f5e5d IM |
186 | |
187 | count[0] = count[1] = count[2] = 0; | |
2996f5dd | 188 | |
c04f5e5d | 189 | nv = scale ? 3 : 1; |
cca03c0a | 190 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
743ee1f8 IM |
191 | if (fd[cpu][counter] < 0) |
192 | continue; | |
193 | ||
9cffa8d5 PM |
194 | res = read(fd[cpu][counter], single_count, nv * sizeof(u64)); |
195 | assert(res == nv * sizeof(u64)); | |
f37a291c | 196 | |
42202dd5 IM |
197 | close(fd[cpu][counter]); |
198 | fd[cpu][counter] = -1; | |
c04f5e5d IM |
199 | |
200 | count[0] += single_count[0]; | |
201 | if (scale) { | |
202 | count[1] += single_count[1]; | |
203 | count[2] += single_count[2]; | |
204 | } | |
205 | } | |
206 | ||
207 | scaled = 0; | |
208 | if (scale) { | |
209 | if (count[2] == 0) { | |
9e9772c4 | 210 | event_scaled[counter] = -1; |
2996f5dd | 211 | count[0] = 0; |
c04f5e5d IM |
212 | return; |
213 | } | |
2996f5dd | 214 | |
c04f5e5d | 215 | if (count[2] < count[1]) { |
9e9772c4 | 216 | event_scaled[counter] = 1; |
c04f5e5d IM |
217 | count[0] = (unsigned long long) |
218 | ((double)count[0] * count[1] / count[2] + 0.5); | |
219 | } | |
220 | } | |
9e9772c4 PZ |
221 | |
222 | for (i = 0; i < 3; i++) | |
223 | update_stats(&event_res_stats[counter][i], count[i]); | |
224 | ||
225 | if (verbose) { | |
226 | fprintf(stderr, "%s: %Ld %Ld %Ld\n", event_name(counter), | |
227 | count[0], count[1], count[2]); | |
228 | } | |
229 | ||
be1ac0d8 IM |
230 | /* |
231 | * Save the full runtime - to allow normalization during printout: | |
232 | */ | |
b9ebdcc0 | 233 | if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) |
9e9772c4 | 234 | update_stats(&runtime_nsecs_stats, count[0]); |
b9ebdcc0 | 235 | if (MATCH_EVENT(HARDWARE, HW_CPU_CYCLES, counter)) |
9e9772c4 | 236 | update_stats(&runtime_cycles_stats, count[0]); |
2996f5dd IM |
237 | } |
238 | ||
f37a291c | 239 | static int run_perf_stat(int argc __used, const char **argv) |
42202dd5 IM |
240 | { |
241 | unsigned long long t0, t1; | |
242 | int status = 0; | |
243 | int counter; | |
244 | int pid; | |
051ae7f7 PM |
245 | int child_ready_pipe[2], go_pipe[2]; |
246 | char buf; | |
42202dd5 IM |
247 | |
248 | if (!system_wide) | |
249 | nr_cpus = 1; | |
250 | ||
051ae7f7 PM |
251 | if (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0) { |
252 | perror("failed to create pipes"); | |
253 | exit(1); | |
254 | } | |
255 | ||
256 | if ((pid = fork()) < 0) | |
257 | perror("failed to fork"); | |
258 | ||
259 | if (!pid) { | |
260 | close(child_ready_pipe[0]); | |
261 | close(go_pipe[1]); | |
262 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); | |
263 | ||
264 | /* | |
265 | * Do a dummy execvp to get the PLT entry resolved, | |
266 | * so we avoid the resolver overhead on the real | |
267 | * execvp call. | |
268 | */ | |
269 | execvp("", (char **)argv); | |
270 | ||
271 | /* | |
272 | * Tell the parent we're ready to go | |
273 | */ | |
274 | close(child_ready_pipe[1]); | |
275 | ||
276 | /* | |
277 | * Wait until the parent tells us to go. | |
278 | */ | |
a92bef0f FW |
279 | if (read(go_pipe[0], &buf, 1) == -1) |
280 | perror("unable to read pipe"); | |
051ae7f7 PM |
281 | |
282 | execvp(argv[0], (char **)argv); | |
283 | ||
284 | perror(argv[0]); | |
285 | exit(-1); | |
286 | } | |
287 | ||
288 | /* | |
289 | * Wait for the child to be ready to exec. | |
290 | */ | |
291 | close(child_ready_pipe[1]); | |
292 | close(go_pipe[0]); | |
a92bef0f FW |
293 | if (read(child_ready_pipe[0], &buf, 1) == -1) |
294 | perror("unable to read pipe"); | |
051ae7f7 PM |
295 | close(child_ready_pipe[0]); |
296 | ||
42202dd5 | 297 | for (counter = 0; counter < nr_counters; counter++) |
051ae7f7 | 298 | create_perf_stat_counter(counter, pid); |
42202dd5 IM |
299 | |
300 | /* | |
301 | * Enable counters and exec the command: | |
302 | */ | |
303 | t0 = rdclock(); | |
42202dd5 | 304 | |
051ae7f7 | 305 | close(go_pipe[1]); |
42202dd5 IM |
306 | wait(&status); |
307 | ||
42202dd5 IM |
308 | t1 = rdclock(); |
309 | ||
9e9772c4 | 310 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 IM |
311 | |
312 | for (counter = 0; counter < nr_counters; counter++) | |
313 | read_counter(counter); | |
314 | ||
315 | return WEXITSTATUS(status); | |
316 | } | |
317 | ||
849abde9 | 318 | static void print_noise(int counter, double avg) |
42202dd5 | 319 | { |
849abde9 PZ |
320 | if (run_count == 1) |
321 | return; | |
322 | ||
323 | fprintf(stderr, " ( +- %7.3f%% )", | |
324 | 100 * stddev_stats(&event_res_stats[counter][0]) / avg); | |
42202dd5 IM |
325 | } |
326 | ||
849abde9 | 327 | static void nsec_printout(int counter, double avg) |
44175b6f | 328 | { |
506d4bc8 | 329 | double msecs = avg / 1e6; |
44175b6f | 330 | |
6e750a8f | 331 | fprintf(stderr, " %14.6f %-24s", msecs, event_name(counter)); |
44175b6f | 332 | |
b9ebdcc0 | 333 | if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) { |
506d4bc8 PZ |
334 | fprintf(stderr, " # %10.3f CPUs ", |
335 | avg / avg_stats(&walltime_nsecs_stats)); | |
44175b6f IM |
336 | } |
337 | } | |
338 | ||
849abde9 | 339 | static void abs_printout(int counter, double avg) |
44175b6f | 340 | { |
c7f7fea3 IM |
341 | double total, ratio = 0.0; |
342 | ||
506d4bc8 | 343 | fprintf(stderr, " %14.0f %-24s", avg, event_name(counter)); |
44175b6f | 344 | |
506d4bc8 | 345 | if (MATCH_EVENT(HARDWARE, HW_INSTRUCTIONS, counter)) { |
c7f7fea3 IM |
346 | total = avg_stats(&runtime_cycles_stats); |
347 | ||
348 | if (total) | |
349 | ratio = avg / total; | |
350 | ||
351 | fprintf(stderr, " # %10.3f IPC ", ratio); | |
42202dd5 | 352 | } else { |
c7f7fea3 IM |
353 | total = avg_stats(&runtime_nsecs_stats); |
354 | ||
355 | if (total) | |
356 | ratio = 1000.0 * avg / total; | |
357 | ||
358 | fprintf(stderr, " # %10.3f M/sec", ratio); | |
44175b6f | 359 | } |
44175b6f IM |
360 | } |
361 | ||
2996f5dd IM |
362 | /* |
363 | * Print out the results of a single counter: | |
364 | */ | |
365 | static void print_counter(int counter) | |
366 | { | |
849abde9 | 367 | double avg = avg_stats(&event_res_stats[counter][0]); |
63d40deb | 368 | int scaled = event_scaled[counter]; |
2996f5dd | 369 | |
2996f5dd | 370 | if (scaled == -1) { |
6e750a8f | 371 | fprintf(stderr, " %14s %-24s\n", |
2996f5dd IM |
372 | "<not counted>", event_name(counter)); |
373 | return; | |
374 | } | |
c04f5e5d | 375 | |
44175b6f | 376 | if (nsec_counter(counter)) |
849abde9 | 377 | nsec_printout(counter, avg); |
44175b6f | 378 | else |
849abde9 PZ |
379 | abs_printout(counter, avg); |
380 | ||
381 | print_noise(counter, avg); | |
506d4bc8 PZ |
382 | |
383 | if (scaled) { | |
384 | double avg_enabled, avg_running; | |
385 | ||
386 | avg_enabled = avg_stats(&event_res_stats[counter][1]); | |
387 | avg_running = avg_stats(&event_res_stats[counter][2]); | |
d7c29318 | 388 | |
210ad39f | 389 | fprintf(stderr, " (scaled from %.2f%%)", |
506d4bc8 PZ |
390 | 100 * avg_running / avg_enabled); |
391 | } | |
44175b6f | 392 | |
c04f5e5d IM |
393 | fprintf(stderr, "\n"); |
394 | } | |
395 | ||
42202dd5 IM |
396 | static void print_stat(int argc, const char **argv) |
397 | { | |
398 | int i, counter; | |
399 | ||
ddcacfa0 IM |
400 | fflush(stdout); |
401 | ||
402 | fprintf(stderr, "\n"); | |
44db76c8 IM |
403 | fprintf(stderr, " Performance counter stats for \'%s", argv[0]); |
404 | ||
405 | for (i = 1; i < argc; i++) | |
406 | fprintf(stderr, " %s", argv[i]); | |
407 | ||
42202dd5 IM |
408 | fprintf(stderr, "\'"); |
409 | if (run_count > 1) | |
410 | fprintf(stderr, " (%d runs)", run_count); | |
411 | fprintf(stderr, ":\n\n"); | |
2996f5dd | 412 | |
c04f5e5d IM |
413 | for (counter = 0; counter < nr_counters; counter++) |
414 | print_counter(counter); | |
ddcacfa0 | 415 | |
ddcacfa0 | 416 | fprintf(stderr, "\n"); |
566747e6 | 417 | fprintf(stderr, " %14.9f seconds time elapsed", |
506d4bc8 | 418 | avg_stats(&walltime_nsecs_stats)/1e9); |
566747e6 IM |
419 | if (run_count > 1) { |
420 | fprintf(stderr, " ( +- %7.3f%% )", | |
506d4bc8 PZ |
421 | 100*stddev_stats(&walltime_nsecs_stats) / |
422 | avg_stats(&walltime_nsecs_stats)); | |
566747e6 IM |
423 | } |
424 | fprintf(stderr, "\n\n"); | |
ddcacfa0 IM |
425 | } |
426 | ||
f7b7c26e PZ |
427 | static volatile int signr = -1; |
428 | ||
5242519b | 429 | static void skip_signal(int signo) |
ddcacfa0 | 430 | { |
f7b7c26e PZ |
431 | signr = signo; |
432 | } | |
433 | ||
434 | static void sig_atexit(void) | |
435 | { | |
436 | if (signr == -1) | |
437 | return; | |
438 | ||
439 | signal(signr, SIG_DFL); | |
440 | kill(getpid(), signr); | |
5242519b IM |
441 | } |
442 | ||
443 | static const char * const stat_usage[] = { | |
444 | "perf stat [<options>] <command>", | |
445 | NULL | |
446 | }; | |
447 | ||
5242519b IM |
448 | static const struct option options[] = { |
449 | OPT_CALLBACK('e', "event", NULL, "event", | |
86847b62 TG |
450 | "event selector. use 'perf list' to list available events", |
451 | parse_events), | |
5242519b IM |
452 | OPT_BOOLEAN('i', "inherit", &inherit, |
453 | "child tasks inherit counters"), | |
454 | OPT_INTEGER('p', "pid", &target_pid, | |
455 | "stat events on existing pid"), | |
456 | OPT_BOOLEAN('a', "all-cpus", &system_wide, | |
3d632595 | 457 | "system-wide collection from all CPUs"), |
b26bc5a7 | 458 | OPT_BOOLEAN('c', "scale", &scale, |
3d632595 | 459 | "scale/normalize counters"), |
743ee1f8 IM |
460 | OPT_BOOLEAN('v', "verbose", &verbose, |
461 | "be more verbose (show counter open errors, etc)"), | |
42202dd5 IM |
462 | OPT_INTEGER('r', "repeat", &run_count, |
463 | "repeat command and print average + stddev (max: 100)"), | |
0cfb7a13 IM |
464 | OPT_BOOLEAN('n', "null", &null_run, |
465 | "null run - dont start any counters"), | |
5242519b IM |
466 | OPT_END() |
467 | }; | |
468 | ||
f37a291c | 469 | int cmd_stat(int argc, const char **argv, const char *prefix __used) |
5242519b | 470 | { |
42202dd5 IM |
471 | int status; |
472 | ||
a0541234 AB |
473 | argc = parse_options(argc, argv, options, stat_usage, |
474 | PARSE_OPT_STOP_AT_NON_OPTION); | |
5242519b IM |
475 | if (!argc) |
476 | usage_with_options(stat_usage, options); | |
9e9772c4 | 477 | if (run_count <= 0) |
42202dd5 | 478 | usage_with_options(stat_usage, options); |
ddcacfa0 | 479 | |
c3043569 JSR |
480 | /* Set attrs and nr_counters if no event is selected and !null_run */ |
481 | if (!null_run && !nr_counters) { | |
482 | memcpy(attrs, default_attrs, sizeof(default_attrs)); | |
483 | nr_counters = ARRAY_SIZE(default_attrs); | |
484 | } | |
ddcacfa0 | 485 | |
ddcacfa0 IM |
486 | nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); |
487 | assert(nr_cpus <= MAX_NR_CPUS); | |
f37a291c | 488 | assert((int)nr_cpus >= 0); |
ddcacfa0 | 489 | |
58d7e993 IM |
490 | /* |
491 | * We dont want to block the signals - that would cause | |
492 | * child tasks to inherit that and Ctrl-C would not work. | |
493 | * What we want is for Ctrl-C to work in the exec()-ed | |
494 | * task, but being ignored by perf stat itself: | |
495 | */ | |
f7b7c26e | 496 | atexit(sig_atexit); |
58d7e993 IM |
497 | signal(SIGINT, skip_signal); |
498 | signal(SIGALRM, skip_signal); | |
499 | signal(SIGABRT, skip_signal); | |
500 | ||
42202dd5 IM |
501 | status = 0; |
502 | for (run_idx = 0; run_idx < run_count; run_idx++) { | |
503 | if (run_count != 1 && verbose) | |
3d632595 | 504 | fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1); |
42202dd5 IM |
505 | status = run_perf_stat(argc, argv); |
506 | } | |
507 | ||
508 | print_stat(argc, argv); | |
509 | ||
510 | return status; | |
ddcacfa0 | 511 | } |