]>
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 | |
2cba3ffb | 9 | $ perf stat ./hackbench 10 |
ddcacfa0 | 10 | |
2cba3ffb | 11 | Time: 0.118 |
ddcacfa0 | 12 | |
2cba3ffb | 13 | Performance counter stats for './hackbench 10': |
ddcacfa0 | 14 | |
2cba3ffb IM |
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 | |
26 | ||
27 | 0.154822978 seconds time elapsed | |
ddcacfa0 | 28 | |
5242519b | 29 | * |
2cba3ffb | 30 | * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com> |
5242519b IM |
31 | * |
32 | * Improvements and fixes by: | |
33 | * | |
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> | |
6e750a8f | 39 | * Jaswinder Singh Rajput <jaswinder@kernel.org> |
5242519b IM |
40 | * |
41 | * Released under the GPL v2. (and only v2, not any later version) | |
ddcacfa0 IM |
42 | */ |
43 | ||
1a482f38 | 44 | #include "perf.h" |
16f762a2 | 45 | #include "builtin.h" |
148be2c1 | 46 | #include "util/util.h" |
5242519b IM |
47 | #include "util/parse-options.h" |
48 | #include "util/parse-events.h" | |
8f28827a | 49 | #include "util/event.h" |
361c99a6 | 50 | #include "util/evlist.h" |
69aad6f1 | 51 | #include "util/evsel.h" |
8f28827a | 52 | #include "util/debug.h" |
a5d243d0 | 53 | #include "util/color.h" |
60666c63 | 54 | #include "util/header.h" |
a12b51c4 | 55 | #include "util/cpumap.h" |
d6d901c2 | 56 | #include "util/thread.h" |
fd78260b | 57 | #include "util/thread_map.h" |
ddcacfa0 | 58 | |
ddcacfa0 | 59 | #include <sys/prctl.h> |
42202dd5 | 60 | #include <math.h> |
5af52b51 | 61 | #include <locale.h> |
16c8a109 | 62 | |
d7470b6a SE |
63 | #define DEFAULT_SEPARATOR " " |
64 | ||
cdd6c482 | 65 | static struct perf_event_attr default_attrs[] = { |
ddcacfa0 | 66 | |
56aab464 IM |
67 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, |
68 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, | |
69 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, | |
70 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, | |
f4dbfa8f | 71 | |
56aab464 | 72 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, |
129c04cb IM |
73 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, |
74 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, | |
56aab464 | 75 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, |
56aab464 IM |
76 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, |
77 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, | |
f4dbfa8f | 78 | |
ddcacfa0 | 79 | }; |
5242519b | 80 | |
c6264def | 81 | /* |
2cba3ffb | 82 | * Detailed stats (-d), covering the L1 and last level data caches: |
c6264def IM |
83 | */ |
84 | static struct perf_event_attr detailed_attrs[] = { | |
85 | ||
c6264def IM |
86 | { .type = PERF_TYPE_HW_CACHE, |
87 | .config = | |
88 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
89 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
90 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
91 | ||
92 | { .type = PERF_TYPE_HW_CACHE, | |
93 | .config = | |
94 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
95 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
96 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
97 | ||
98 | { .type = PERF_TYPE_HW_CACHE, | |
99 | .config = | |
100 | PERF_COUNT_HW_CACHE_LL << 0 | | |
101 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
102 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
103 | ||
104 | { .type = PERF_TYPE_HW_CACHE, | |
105 | .config = | |
106 | PERF_COUNT_HW_CACHE_LL << 0 | | |
107 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
108 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
109 | }; | |
110 | ||
2cba3ffb IM |
111 | /* |
112 | * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: | |
113 | */ | |
114 | static struct perf_event_attr very_detailed_attrs[] = { | |
115 | ||
116 | { .type = PERF_TYPE_HW_CACHE, | |
117 | .config = | |
118 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
119 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
120 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
121 | ||
122 | { .type = PERF_TYPE_HW_CACHE, | |
123 | .config = | |
124 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
125 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
126 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
127 | ||
128 | { .type = PERF_TYPE_HW_CACHE, | |
129 | .config = | |
130 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
131 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
132 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
133 | ||
134 | { .type = PERF_TYPE_HW_CACHE, | |
135 | .config = | |
136 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
137 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
138 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
139 | ||
140 | { .type = PERF_TYPE_HW_CACHE, | |
141 | .config = | |
142 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
143 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
144 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
145 | ||
146 | { .type = PERF_TYPE_HW_CACHE, | |
147 | .config = | |
148 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
149 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
150 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
151 | ||
152 | }; | |
153 | ||
154 | /* | |
155 | * Very, very detailed stats (-d -d -d), adding prefetch events: | |
156 | */ | |
157 | static struct perf_event_attr very_very_detailed_attrs[] = { | |
158 | ||
159 | { .type = PERF_TYPE_HW_CACHE, | |
160 | .config = | |
161 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
162 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
163 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
164 | ||
165 | { .type = PERF_TYPE_HW_CACHE, | |
166 | .config = | |
167 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
168 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
169 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
170 | }; | |
171 | ||
172 | ||
173 | ||
361c99a6 ACM |
174 | struct perf_evlist *evsel_list; |
175 | ||
c0555642 | 176 | static bool system_wide = false; |
3d632595 | 177 | static int run_idx = 0; |
ddcacfa0 | 178 | |
3d632595 | 179 | static int run_count = 1; |
2e6cdf99 | 180 | static bool no_inherit = false; |
c0555642 | 181 | static bool scale = true; |
f5b4a9c3 | 182 | static bool no_aggr = false; |
933da83a | 183 | static pid_t target_pid = -1; |
d6d901c2 | 184 | static pid_t target_tid = -1; |
933da83a | 185 | static pid_t child_pid = -1; |
c0555642 | 186 | static bool null_run = false; |
2cba3ffb | 187 | static int detailed_run = 0; |
f9cef0a9 | 188 | static bool sync_run = false; |
201e0b06 | 189 | static bool big_num = true; |
d7470b6a | 190 | static int big_num_opt = -1; |
c45c6ea2 | 191 | static const char *cpu_list; |
d7470b6a SE |
192 | static const char *csv_sep = NULL; |
193 | static bool csv_output = false; | |
5af52b51 | 194 | |
60666c63 LW |
195 | static volatile int done = 0; |
196 | ||
506d4bc8 PZ |
197 | struct stats |
198 | { | |
8a02631a | 199 | double n, mean, M2; |
506d4bc8 | 200 | }; |
42202dd5 | 201 | |
69aad6f1 ACM |
202 | struct perf_stat { |
203 | struct stats res_stats[3]; | |
69aad6f1 ACM |
204 | }; |
205 | ||
c52b12ed | 206 | static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel) |
69aad6f1 | 207 | { |
c52b12ed | 208 | evsel->priv = zalloc(sizeof(struct perf_stat)); |
69aad6f1 ACM |
209 | return evsel->priv == NULL ? -ENOMEM : 0; |
210 | } | |
211 | ||
212 | static void perf_evsel__free_stat_priv(struct perf_evsel *evsel) | |
213 | { | |
214 | free(evsel->priv); | |
215 | evsel->priv = NULL; | |
216 | } | |
217 | ||
9e9772c4 PZ |
218 | static void update_stats(struct stats *stats, u64 val) |
219 | { | |
8a02631a | 220 | double delta; |
9e9772c4 | 221 | |
8a02631a PZ |
222 | stats->n++; |
223 | delta = val - stats->mean; | |
224 | stats->mean += delta / stats->n; | |
225 | stats->M2 += delta*(val - stats->mean); | |
9e9772c4 PZ |
226 | } |
227 | ||
506d4bc8 PZ |
228 | static double avg_stats(struct stats *stats) |
229 | { | |
8a02631a | 230 | return stats->mean; |
506d4bc8 | 231 | } |
42202dd5 | 232 | |
506d4bc8 | 233 | /* |
63d40deb PZ |
234 | * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance |
235 | * | |
8a02631a PZ |
236 | * (\Sum n_i^2) - ((\Sum n_i)^2)/n |
237 | * s^2 = ------------------------------- | |
238 | * n - 1 | |
63d40deb PZ |
239 | * |
240 | * http://en.wikipedia.org/wiki/Stddev | |
241 | * | |
242 | * The std dev of the mean is related to the std dev by: | |
243 | * | |
244 | * s | |
245 | * s_mean = ------- | |
246 | * sqrt(n) | |
247 | * | |
506d4bc8 PZ |
248 | */ |
249 | static double stddev_stats(struct stats *stats) | |
250 | { | |
8a02631a PZ |
251 | double variance = stats->M2 / (stats->n - 1); |
252 | double variance_mean = variance / stats->n; | |
42202dd5 | 253 | |
63d40deb | 254 | return sqrt(variance_mean); |
506d4bc8 | 255 | } |
42202dd5 | 256 | |
f5b4a9c3 SE |
257 | struct stats runtime_nsecs_stats[MAX_NR_CPUS]; |
258 | struct stats runtime_cycles_stats[MAX_NR_CPUS]; | |
d3d1e86d IM |
259 | struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS]; |
260 | struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS]; | |
f5b4a9c3 | 261 | struct stats runtime_branches_stats[MAX_NR_CPUS]; |
d58f4c82 | 262 | struct stats runtime_cacherefs_stats[MAX_NR_CPUS]; |
8bb6c79f | 263 | struct stats runtime_l1_dcache_stats[MAX_NR_CPUS]; |
c3305257 IM |
264 | struct stats runtime_l1_icache_stats[MAX_NR_CPUS]; |
265 | struct stats runtime_ll_cache_stats[MAX_NR_CPUS]; | |
266 | struct stats runtime_itlb_cache_stats[MAX_NR_CPUS]; | |
267 | struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS]; | |
506d4bc8 | 268 | struct stats walltime_nsecs_stats; |
be1ac0d8 | 269 | |
48290609 | 270 | static int create_perf_stat_counter(struct perf_evsel *evsel) |
ddcacfa0 | 271 | { |
69aad6f1 | 272 | struct perf_event_attr *attr = &evsel->attr; |
16c8a109 | 273 | |
ddcacfa0 | 274 | if (scale) |
a21ca2ca IM |
275 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
276 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
ddcacfa0 | 277 | |
5d2cd909 ACM |
278 | attr->inherit = !no_inherit; |
279 | ||
48290609 | 280 | if (system_wide) |
5d2cd909 | 281 | return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, false); |
48290609 | 282 | |
48290609 ACM |
283 | if (target_pid == -1 && target_tid == -1) { |
284 | attr->disabled = 1; | |
285 | attr->enable_on_exec = 1; | |
ddcacfa0 | 286 | } |
084ab9f8 | 287 | |
5d2cd909 | 288 | return perf_evsel__open_per_thread(evsel, evsel_list->threads, false); |
ddcacfa0 IM |
289 | } |
290 | ||
c04f5e5d IM |
291 | /* |
292 | * Does the counter have nsecs as a unit? | |
293 | */ | |
daec78a0 | 294 | static inline int nsec_counter(struct perf_evsel *evsel) |
c04f5e5d | 295 | { |
daec78a0 ACM |
296 | if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || |
297 | perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) | |
c04f5e5d IM |
298 | return 1; |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
dcd9936a IM |
303 | /* |
304 | * Update various tracking values we maintain to print | |
305 | * more semantic information such as miss/hit ratios, | |
306 | * instruction rates, etc: | |
307 | */ | |
308 | static void update_shadow_stats(struct perf_evsel *counter, u64 *count) | |
309 | { | |
310 | if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK)) | |
311 | update_stats(&runtime_nsecs_stats[0], count[0]); | |
312 | else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) | |
313 | update_stats(&runtime_cycles_stats[0], count[0]); | |
d3d1e86d IM |
314 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) |
315 | update_stats(&runtime_stalled_cycles_front_stats[0], count[0]); | |
129c04cb | 316 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND)) |
d3d1e86d | 317 | update_stats(&runtime_stalled_cycles_back_stats[0], count[0]); |
dcd9936a IM |
318 | else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS)) |
319 | update_stats(&runtime_branches_stats[0], count[0]); | |
320 | else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES)) | |
321 | update_stats(&runtime_cacherefs_stats[0], count[0]); | |
8bb6c79f IM |
322 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D)) |
323 | update_stats(&runtime_l1_dcache_stats[0], count[0]); | |
c3305257 IM |
324 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I)) |
325 | update_stats(&runtime_l1_icache_stats[0], count[0]); | |
326 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL)) | |
327 | update_stats(&runtime_ll_cache_stats[0], count[0]); | |
328 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB)) | |
329 | update_stats(&runtime_dtlb_cache_stats[0], count[0]); | |
330 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB)) | |
331 | update_stats(&runtime_itlb_cache_stats[0], count[0]); | |
dcd9936a IM |
332 | } |
333 | ||
c04f5e5d | 334 | /* |
2996f5dd | 335 | * Read out the results of a single counter: |
f5b4a9c3 | 336 | * aggregate counts across CPUs in system-wide mode |
c04f5e5d | 337 | */ |
c52b12ed | 338 | static int read_counter_aggr(struct perf_evsel *counter) |
c04f5e5d | 339 | { |
69aad6f1 | 340 | struct perf_stat *ps = counter->priv; |
c52b12ed ACM |
341 | u64 *count = counter->counts->aggr.values; |
342 | int i; | |
2996f5dd | 343 | |
7e2ed097 ACM |
344 | if (__perf_evsel__read(counter, evsel_list->cpus->nr, |
345 | evsel_list->threads->nr, scale) < 0) | |
c52b12ed | 346 | return -1; |
9e9772c4 PZ |
347 | |
348 | for (i = 0; i < 3; i++) | |
69aad6f1 | 349 | update_stats(&ps->res_stats[i], count[i]); |
9e9772c4 PZ |
350 | |
351 | if (verbose) { | |
9486aa38 ACM |
352 | fprintf(stderr, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
353 | event_name(counter), count[0], count[1], count[2]); | |
9e9772c4 PZ |
354 | } |
355 | ||
be1ac0d8 IM |
356 | /* |
357 | * Save the full runtime - to allow normalization during printout: | |
358 | */ | |
dcd9936a | 359 | update_shadow_stats(counter, count); |
c52b12ed ACM |
360 | |
361 | return 0; | |
f5b4a9c3 SE |
362 | } |
363 | ||
364 | /* | |
365 | * Read out the results of a single counter: | |
366 | * do not aggregate counts across CPUs in system-wide mode | |
367 | */ | |
c52b12ed | 368 | static int read_counter(struct perf_evsel *counter) |
f5b4a9c3 | 369 | { |
c52b12ed | 370 | u64 *count; |
f5b4a9c3 | 371 | int cpu; |
f5b4a9c3 | 372 | |
7e2ed097 | 373 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
c52b12ed ACM |
374 | if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0) |
375 | return -1; | |
f5b4a9c3 | 376 | |
c52b12ed | 377 | count = counter->counts->cpu[cpu].values; |
f5b4a9c3 | 378 | |
dcd9936a | 379 | update_shadow_stats(counter, count); |
f5b4a9c3 | 380 | } |
c52b12ed ACM |
381 | |
382 | return 0; | |
2996f5dd IM |
383 | } |
384 | ||
f37a291c | 385 | static int run_perf_stat(int argc __used, const char **argv) |
42202dd5 IM |
386 | { |
387 | unsigned long long t0, t1; | |
69aad6f1 | 388 | struct perf_evsel *counter; |
42202dd5 | 389 | int status = 0; |
051ae7f7 | 390 | int child_ready_pipe[2], go_pipe[2]; |
6be2850e | 391 | const bool forks = (argc > 0); |
051ae7f7 | 392 | char buf; |
42202dd5 | 393 | |
60666c63 | 394 | if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) { |
051ae7f7 PM |
395 | perror("failed to create pipes"); |
396 | exit(1); | |
397 | } | |
398 | ||
60666c63 | 399 | if (forks) { |
6be2850e | 400 | if ((child_pid = fork()) < 0) |
60666c63 LW |
401 | perror("failed to fork"); |
402 | ||
6be2850e | 403 | if (!child_pid) { |
60666c63 LW |
404 | close(child_ready_pipe[0]); |
405 | close(go_pipe[1]); | |
406 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); | |
407 | ||
408 | /* | |
409 | * Do a dummy execvp to get the PLT entry resolved, | |
410 | * so we avoid the resolver overhead on the real | |
411 | * execvp call. | |
412 | */ | |
413 | execvp("", (char **)argv); | |
414 | ||
415 | /* | |
416 | * Tell the parent we're ready to go | |
417 | */ | |
418 | close(child_ready_pipe[1]); | |
419 | ||
420 | /* | |
421 | * Wait until the parent tells us to go. | |
422 | */ | |
423 | if (read(go_pipe[0], &buf, 1) == -1) | |
424 | perror("unable to read pipe"); | |
425 | ||
426 | execvp(argv[0], (char **)argv); | |
427 | ||
428 | perror(argv[0]); | |
429 | exit(-1); | |
430 | } | |
051ae7f7 | 431 | |
d6d901c2 | 432 | if (target_tid == -1 && target_pid == -1 && !system_wide) |
7e2ed097 | 433 | evsel_list->threads->map[0] = child_pid; |
d6d901c2 | 434 | |
051ae7f7 | 435 | /* |
60666c63 | 436 | * Wait for the child to be ready to exec. |
051ae7f7 PM |
437 | */ |
438 | close(child_ready_pipe[1]); | |
60666c63 LW |
439 | close(go_pipe[0]); |
440 | if (read(child_ready_pipe[0], &buf, 1) == -1) | |
a92bef0f | 441 | perror("unable to read pipe"); |
60666c63 | 442 | close(child_ready_pipe[0]); |
051ae7f7 PM |
443 | } |
444 | ||
361c99a6 | 445 | list_for_each_entry(counter, &evsel_list->entries, node) { |
48290609 | 446 | if (create_perf_stat_counter(counter) < 0) { |
c63ca0c0 DA |
447 | if (errno == EINVAL || errno == ENOSYS || errno == ENOENT) { |
448 | if (verbose) | |
449 | ui__warning("%s event is not supported by the kernel.\n", | |
450 | event_name(counter)); | |
ede70290 | 451 | continue; |
c63ca0c0 | 452 | } |
ede70290 IM |
453 | |
454 | if (errno == EPERM || errno == EACCES) { | |
48290609 ACM |
455 | error("You may not have permission to collect %sstats.\n" |
456 | "\t Consider tweaking" | |
457 | " /proc/sys/kernel/perf_event_paranoid or running as root.", | |
458 | system_wide ? "system-wide " : ""); | |
459 | } else { | |
460 | error("open_counter returned with %d (%s). " | |
461 | "/bin/dmesg may provide additional information.\n", | |
462 | errno, strerror(errno)); | |
463 | } | |
464 | if (child_pid != -1) | |
465 | kill(child_pid, SIGTERM); | |
466 | die("Not all events could be opened.\n"); | |
467 | return -1; | |
468 | } | |
084ab9f8 | 469 | } |
42202dd5 | 470 | |
cfd748ae FW |
471 | if (perf_evlist__set_filters(evsel_list)) { |
472 | error("failed to set filter with %d (%s)\n", errno, | |
473 | strerror(errno)); | |
474 | return -1; | |
475 | } | |
476 | ||
42202dd5 IM |
477 | /* |
478 | * Enable counters and exec the command: | |
479 | */ | |
480 | t0 = rdclock(); | |
42202dd5 | 481 | |
60666c63 LW |
482 | if (forks) { |
483 | close(go_pipe[1]); | |
484 | wait(&status); | |
485 | } else { | |
6be2850e | 486 | while(!done) sleep(1); |
60666c63 | 487 | } |
42202dd5 | 488 | |
42202dd5 IM |
489 | t1 = rdclock(); |
490 | ||
9e9772c4 | 491 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 | 492 | |
f5b4a9c3 | 493 | if (no_aggr) { |
361c99a6 | 494 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 495 | read_counter(counter); |
7e2ed097 | 496 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1); |
c52b12ed | 497 | } |
f5b4a9c3 | 498 | } else { |
361c99a6 | 499 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 500 | read_counter_aggr(counter); |
7e2ed097 ACM |
501 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, |
502 | evsel_list->threads->nr); | |
c52b12ed | 503 | } |
f5b4a9c3 | 504 | } |
c52b12ed | 505 | |
42202dd5 IM |
506 | return WEXITSTATUS(status); |
507 | } | |
508 | ||
f99844cb IM |
509 | static void print_noise_pct(double total, double avg) |
510 | { | |
511 | double pct = 0.0; | |
512 | ||
513 | if (avg) | |
514 | pct = 100.0*total/avg; | |
515 | ||
516 | fprintf(stderr, " ( +-%6.2f%% )", pct); | |
517 | } | |
518 | ||
69aad6f1 | 519 | static void print_noise(struct perf_evsel *evsel, double avg) |
42202dd5 | 520 | { |
69aad6f1 ACM |
521 | struct perf_stat *ps; |
522 | ||
849abde9 PZ |
523 | if (run_count == 1) |
524 | return; | |
525 | ||
69aad6f1 | 526 | ps = evsel->priv; |
f99844cb | 527 | print_noise_pct(stddev_stats(&ps->res_stats[0]), avg); |
42202dd5 IM |
528 | } |
529 | ||
daec78a0 | 530 | static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 531 | { |
506d4bc8 | 532 | double msecs = avg / 1e6; |
d7470b6a | 533 | char cpustr[16] = { '\0', }; |
2cba3ffb | 534 | const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s"; |
44175b6f | 535 | |
f5b4a9c3 | 536 | if (no_aggr) |
d7470b6a SE |
537 | sprintf(cpustr, "CPU%*d%s", |
538 | csv_output ? 0 : -4, | |
7e2ed097 | 539 | evsel_list->cpus->map[cpu], csv_sep); |
d7470b6a | 540 | |
daec78a0 | 541 | fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(evsel)); |
d7470b6a | 542 | |
023695d9 SE |
543 | if (evsel->cgrp) |
544 | fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name); | |
545 | ||
d7470b6a SE |
546 | if (csv_output) |
547 | return; | |
44175b6f | 548 | |
daec78a0 | 549 | if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) |
481f988a | 550 | fprintf(stderr, " # %8.3f CPUs utilized ", avg / avg_stats(&walltime_nsecs_stats)); |
44175b6f IM |
551 | } |
552 | ||
d3d1e86d IM |
553 | static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg) |
554 | { | |
555 | double total, ratio = 0.0; | |
556 | const char *color; | |
557 | ||
558 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
559 | ||
560 | if (total) | |
561 | ratio = avg / total * 100.0; | |
562 | ||
563 | color = PERF_COLOR_NORMAL; | |
2b427e14 | 564 | if (ratio > 50.0) |
d3d1e86d | 565 | color = PERF_COLOR_RED; |
2b427e14 | 566 | else if (ratio > 30.0) |
d3d1e86d | 567 | color = PERF_COLOR_MAGENTA; |
2b427e14 | 568 | else if (ratio > 10.0) |
d3d1e86d IM |
569 | color = PERF_COLOR_YELLOW; |
570 | ||
fce3c786 IM |
571 | fprintf(stderr, " # "); |
572 | color_fprintf(stderr, color, "%6.2f%%", ratio); | |
d3d1e86d IM |
573 | fprintf(stderr, " frontend cycles idle "); |
574 | } | |
575 | ||
576 | static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg) | |
a5d243d0 IM |
577 | { |
578 | double total, ratio = 0.0; | |
579 | const char *color; | |
580 | ||
581 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
582 | ||
583 | if (total) | |
584 | ratio = avg / total * 100.0; | |
585 | ||
586 | color = PERF_COLOR_NORMAL; | |
587 | if (ratio > 75.0) | |
588 | color = PERF_COLOR_RED; | |
589 | else if (ratio > 50.0) | |
590 | color = PERF_COLOR_MAGENTA; | |
2b427e14 | 591 | else if (ratio > 20.0) |
a5d243d0 IM |
592 | color = PERF_COLOR_YELLOW; |
593 | ||
fce3c786 IM |
594 | fprintf(stderr, " # "); |
595 | color_fprintf(stderr, color, "%6.2f%%", ratio); | |
596 | fprintf(stderr, " backend cycles idle "); | |
a5d243d0 IM |
597 | } |
598 | ||
c78df6c1 IM |
599 | static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
600 | { | |
601 | double total, ratio = 0.0; | |
602 | const char *color; | |
603 | ||
604 | total = avg_stats(&runtime_branches_stats[cpu]); | |
605 | ||
606 | if (total) | |
607 | ratio = avg / total * 100.0; | |
608 | ||
609 | color = PERF_COLOR_NORMAL; | |
610 | if (ratio > 20.0) | |
611 | color = PERF_COLOR_RED; | |
612 | else if (ratio > 10.0) | |
613 | color = PERF_COLOR_MAGENTA; | |
614 | else if (ratio > 5.0) | |
615 | color = PERF_COLOR_YELLOW; | |
616 | ||
fce3c786 IM |
617 | fprintf(stderr, " # "); |
618 | color_fprintf(stderr, color, "%6.2f%%", ratio); | |
c78df6c1 IM |
619 | fprintf(stderr, " of all branches "); |
620 | } | |
621 | ||
8bb6c79f IM |
622 | static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
623 | { | |
624 | double total, ratio = 0.0; | |
625 | const char *color; | |
626 | ||
627 | total = avg_stats(&runtime_l1_dcache_stats[cpu]); | |
628 | ||
629 | if (total) | |
630 | ratio = avg / total * 100.0; | |
631 | ||
632 | color = PERF_COLOR_NORMAL; | |
633 | if (ratio > 20.0) | |
634 | color = PERF_COLOR_RED; | |
635 | else if (ratio > 10.0) | |
636 | color = PERF_COLOR_MAGENTA; | |
637 | else if (ratio > 5.0) | |
638 | color = PERF_COLOR_YELLOW; | |
639 | ||
fce3c786 IM |
640 | fprintf(stderr, " # "); |
641 | color_fprintf(stderr, color, "%6.2f%%", ratio); | |
8bb6c79f IM |
642 | fprintf(stderr, " of all L1-dcache hits "); |
643 | } | |
644 | ||
c3305257 IM |
645 | static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
646 | { | |
647 | double total, ratio = 0.0; | |
648 | const char *color; | |
649 | ||
650 | total = avg_stats(&runtime_l1_icache_stats[cpu]); | |
651 | ||
652 | if (total) | |
653 | ratio = avg / total * 100.0; | |
654 | ||
655 | color = PERF_COLOR_NORMAL; | |
656 | if (ratio > 20.0) | |
657 | color = PERF_COLOR_RED; | |
658 | else if (ratio > 10.0) | |
659 | color = PERF_COLOR_MAGENTA; | |
660 | else if (ratio > 5.0) | |
661 | color = PERF_COLOR_YELLOW; | |
662 | ||
663 | fprintf(stderr, " # "); | |
664 | color_fprintf(stderr, color, "%6.2f%%", ratio); | |
665 | fprintf(stderr, " of all L1-icache hits "); | |
666 | } | |
667 | ||
668 | static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
669 | { | |
670 | double total, ratio = 0.0; | |
671 | const char *color; | |
672 | ||
673 | total = avg_stats(&runtime_dtlb_cache_stats[cpu]); | |
674 | ||
675 | if (total) | |
676 | ratio = avg / total * 100.0; | |
677 | ||
678 | color = PERF_COLOR_NORMAL; | |
679 | if (ratio > 20.0) | |
680 | color = PERF_COLOR_RED; | |
681 | else if (ratio > 10.0) | |
682 | color = PERF_COLOR_MAGENTA; | |
683 | else if (ratio > 5.0) | |
684 | color = PERF_COLOR_YELLOW; | |
685 | ||
686 | fprintf(stderr, " # "); | |
687 | color_fprintf(stderr, color, "%6.2f%%", ratio); | |
688 | fprintf(stderr, " of all dTLB cache hits "); | |
689 | } | |
690 | ||
691 | static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
692 | { | |
693 | double total, ratio = 0.0; | |
694 | const char *color; | |
695 | ||
696 | total = avg_stats(&runtime_itlb_cache_stats[cpu]); | |
697 | ||
698 | if (total) | |
699 | ratio = avg / total * 100.0; | |
700 | ||
701 | color = PERF_COLOR_NORMAL; | |
702 | if (ratio > 20.0) | |
703 | color = PERF_COLOR_RED; | |
704 | else if (ratio > 10.0) | |
705 | color = PERF_COLOR_MAGENTA; | |
706 | else if (ratio > 5.0) | |
707 | color = PERF_COLOR_YELLOW; | |
708 | ||
709 | fprintf(stderr, " # "); | |
710 | color_fprintf(stderr, color, "%6.2f%%", ratio); | |
711 | fprintf(stderr, " of all iTLB cache hits "); | |
712 | } | |
713 | ||
714 | static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
715 | { | |
716 | double total, ratio = 0.0; | |
717 | const char *color; | |
718 | ||
719 | total = avg_stats(&runtime_ll_cache_stats[cpu]); | |
720 | ||
721 | if (total) | |
722 | ratio = avg / total * 100.0; | |
723 | ||
724 | color = PERF_COLOR_NORMAL; | |
725 | if (ratio > 20.0) | |
726 | color = PERF_COLOR_RED; | |
727 | else if (ratio > 10.0) | |
728 | color = PERF_COLOR_MAGENTA; | |
729 | else if (ratio > 5.0) | |
730 | color = PERF_COLOR_YELLOW; | |
731 | ||
732 | fprintf(stderr, " # "); | |
733 | color_fprintf(stderr, color, "%6.2f%%", ratio); | |
734 | fprintf(stderr, " of all LL-cache hits "); | |
735 | } | |
736 | ||
daec78a0 | 737 | static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 738 | { |
c7f7fea3 | 739 | double total, ratio = 0.0; |
f5b4a9c3 | 740 | char cpustr[16] = { '\0', }; |
d7470b6a SE |
741 | const char *fmt; |
742 | ||
743 | if (csv_output) | |
744 | fmt = "%s%.0f%s%s"; | |
745 | else if (big_num) | |
2cba3ffb | 746 | fmt = "%s%'18.0f%s%-25s"; |
d7470b6a | 747 | else |
2cba3ffb | 748 | fmt = "%s%18.0f%s%-25s"; |
f5b4a9c3 SE |
749 | |
750 | if (no_aggr) | |
d7470b6a SE |
751 | sprintf(cpustr, "CPU%*d%s", |
752 | csv_output ? 0 : -4, | |
7e2ed097 | 753 | evsel_list->cpus->map[cpu], csv_sep); |
f5b4a9c3 SE |
754 | else |
755 | cpu = 0; | |
c7f7fea3 | 756 | |
daec78a0 | 757 | fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(evsel)); |
d7470b6a | 758 | |
023695d9 SE |
759 | if (evsel->cgrp) |
760 | fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name); | |
761 | ||
d7470b6a SE |
762 | if (csv_output) |
763 | return; | |
44175b6f | 764 | |
daec78a0 | 765 | if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) { |
f5b4a9c3 | 766 | total = avg_stats(&runtime_cycles_stats[cpu]); |
c7f7fea3 IM |
767 | |
768 | if (total) | |
769 | ratio = avg / total; | |
770 | ||
fce3c786 | 771 | fprintf(stderr, " # %5.2f insns per cycle ", ratio); |
481f988a | 772 | |
d3d1e86d IM |
773 | total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]); |
774 | total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu])); | |
481f988a IM |
775 | |
776 | if (total && avg) { | |
777 | ratio = total / avg; | |
2cba3ffb | 778 | fprintf(stderr, "\n # %5.2f stalled cycles per insn", ratio); |
481f988a IM |
779 | } |
780 | ||
daec78a0 | 781 | } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) && |
f5b4a9c3 | 782 | runtime_branches_stats[cpu].n != 0) { |
c78df6c1 | 783 | print_branch_misses(cpu, evsel, avg); |
8bb6c79f IM |
784 | } else if ( |
785 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
786 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D | | |
787 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
788 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
c6264def | 789 | runtime_l1_dcache_stats[cpu].n != 0) { |
8bb6c79f | 790 | print_l1_dcache_misses(cpu, evsel, avg); |
c3305257 IM |
791 | } else if ( |
792 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
793 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I | | |
794 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
795 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
796 | runtime_l1_icache_stats[cpu].n != 0) { | |
797 | print_l1_icache_misses(cpu, evsel, avg); | |
798 | } else if ( | |
799 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
800 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB | | |
801 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
802 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
803 | runtime_dtlb_cache_stats[cpu].n != 0) { | |
804 | print_dtlb_cache_misses(cpu, evsel, avg); | |
805 | } else if ( | |
806 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
807 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB | | |
808 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
809 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
810 | runtime_itlb_cache_stats[cpu].n != 0) { | |
811 | print_itlb_cache_misses(cpu, evsel, avg); | |
812 | } else if ( | |
813 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
814 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL | | |
815 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
816 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
817 | runtime_ll_cache_stats[cpu].n != 0) { | |
818 | print_ll_cache_misses(cpu, evsel, avg); | |
d58f4c82 IM |
819 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) && |
820 | runtime_cacherefs_stats[cpu].n != 0) { | |
821 | total = avg_stats(&runtime_cacherefs_stats[cpu]); | |
822 | ||
823 | if (total) | |
824 | ratio = avg * 100 / total; | |
825 | ||
481f988a | 826 | fprintf(stderr, " # %8.3f %% of all cache refs ", ratio); |
d58f4c82 | 827 | |
d3d1e86d IM |
828 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) { |
829 | print_stalled_cycles_frontend(cpu, evsel, avg); | |
129c04cb | 830 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) { |
d3d1e86d | 831 | print_stalled_cycles_backend(cpu, evsel, avg); |
481f988a | 832 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) { |
f5b4a9c3 | 833 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
c7f7fea3 IM |
834 | |
835 | if (total) | |
481f988a | 836 | ratio = 1.0 * avg / total; |
c7f7fea3 | 837 | |
481f988a IM |
838 | fprintf(stderr, " # %8.3f GHz ", ratio); |
839 | } else if (runtime_nsecs_stats[cpu].n != 0) { | |
840 | total = avg_stats(&runtime_nsecs_stats[cpu]); | |
11ba2b85 IM |
841 | |
842 | if (total) | |
481f988a | 843 | ratio = 1000.0 * avg / total; |
11ba2b85 | 844 | |
481f988a | 845 | fprintf(stderr, " # %8.3f M/sec ", ratio); |
a5d243d0 IM |
846 | } else { |
847 | fprintf(stderr, " "); | |
44175b6f | 848 | } |
44175b6f IM |
849 | } |
850 | ||
2996f5dd IM |
851 | /* |
852 | * Print out the results of a single counter: | |
f5b4a9c3 | 853 | * aggregated counts in system-wide mode |
2996f5dd | 854 | */ |
69aad6f1 | 855 | static void print_counter_aggr(struct perf_evsel *counter) |
2996f5dd | 856 | { |
69aad6f1 ACM |
857 | struct perf_stat *ps = counter->priv; |
858 | double avg = avg_stats(&ps->res_stats[0]); | |
c52b12ed | 859 | int scaled = counter->counts->scaled; |
2996f5dd | 860 | |
2996f5dd | 861 | if (scaled == -1) { |
023695d9 | 862 | fprintf(stderr, "%*s%s%*s", |
d7470b6a | 863 | csv_output ? 0 : 18, |
023695d9 SE |
864 | "<not counted>", |
865 | csv_sep, | |
866 | csv_output ? 0 : -24, | |
867 | event_name(counter)); | |
868 | ||
869 | if (counter->cgrp) | |
870 | fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name); | |
871 | ||
872 | fputc('\n', stderr); | |
2996f5dd IM |
873 | return; |
874 | } | |
c04f5e5d | 875 | |
44175b6f | 876 | if (nsec_counter(counter)) |
f5b4a9c3 | 877 | nsec_printout(-1, counter, avg); |
44175b6f | 878 | else |
f5b4a9c3 | 879 | abs_printout(-1, counter, avg); |
849abde9 | 880 | |
d7470b6a SE |
881 | if (csv_output) { |
882 | fputc('\n', stderr); | |
883 | return; | |
884 | } | |
885 | ||
849abde9 | 886 | print_noise(counter, avg); |
506d4bc8 PZ |
887 | |
888 | if (scaled) { | |
889 | double avg_enabled, avg_running; | |
890 | ||
69aad6f1 ACM |
891 | avg_enabled = avg_stats(&ps->res_stats[1]); |
892 | avg_running = avg_stats(&ps->res_stats[2]); | |
d7c29318 | 893 | |
2cba3ffb | 894 | fprintf(stderr, " [%5.2f%%]", 100 * avg_running / avg_enabled); |
506d4bc8 | 895 | } |
c04f5e5d IM |
896 | fprintf(stderr, "\n"); |
897 | } | |
898 | ||
f5b4a9c3 SE |
899 | /* |
900 | * Print out the results of a single counter: | |
901 | * does not use aggregated count in system-wide | |
902 | */ | |
69aad6f1 | 903 | static void print_counter(struct perf_evsel *counter) |
f5b4a9c3 SE |
904 | { |
905 | u64 ena, run, val; | |
906 | int cpu; | |
907 | ||
7e2ed097 | 908 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
c52b12ed ACM |
909 | val = counter->counts->cpu[cpu].val; |
910 | ena = counter->counts->cpu[cpu].ena; | |
911 | run = counter->counts->cpu[cpu].run; | |
f5b4a9c3 | 912 | if (run == 0 || ena == 0) { |
023695d9 | 913 | fprintf(stderr, "CPU%*d%s%*s%s%*s", |
d7470b6a | 914 | csv_output ? 0 : -4, |
7e2ed097 | 915 | evsel_list->cpus->map[cpu], csv_sep, |
d7470b6a SE |
916 | csv_output ? 0 : 18, |
917 | "<not counted>", csv_sep, | |
023695d9 | 918 | csv_output ? 0 : -24, |
d7470b6a | 919 | event_name(counter)); |
f5b4a9c3 | 920 | |
023695d9 SE |
921 | if (counter->cgrp) |
922 | fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name); | |
923 | ||
924 | fputc('\n', stderr); | |
f5b4a9c3 SE |
925 | continue; |
926 | } | |
927 | ||
928 | if (nsec_counter(counter)) | |
929 | nsec_printout(cpu, counter, val); | |
930 | else | |
931 | abs_printout(cpu, counter, val); | |
932 | ||
d7470b6a SE |
933 | if (!csv_output) { |
934 | print_noise(counter, 1.0); | |
f5b4a9c3 | 935 | |
c6264def IM |
936 | if (run != ena) |
937 | fprintf(stderr, " (%.2f%%)", 100.0 * run / ena); | |
f5b4a9c3 | 938 | } |
023695d9 | 939 | fputc('\n', stderr); |
f5b4a9c3 SE |
940 | } |
941 | } | |
942 | ||
42202dd5 IM |
943 | static void print_stat(int argc, const char **argv) |
944 | { | |
69aad6f1 ACM |
945 | struct perf_evsel *counter; |
946 | int i; | |
42202dd5 | 947 | |
ddcacfa0 IM |
948 | fflush(stdout); |
949 | ||
d7470b6a SE |
950 | if (!csv_output) { |
951 | fprintf(stderr, "\n"); | |
952 | fprintf(stderr, " Performance counter stats for "); | |
953 | if(target_pid == -1 && target_tid == -1) { | |
954 | fprintf(stderr, "\'%s", argv[0]); | |
955 | for (i = 1; i < argc; i++) | |
956 | fprintf(stderr, " %s", argv[i]); | |
957 | } else if (target_pid != -1) | |
958 | fprintf(stderr, "process id \'%d", target_pid); | |
959 | else | |
960 | fprintf(stderr, "thread id \'%d", target_tid); | |
44db76c8 | 961 | |
d7470b6a SE |
962 | fprintf(stderr, "\'"); |
963 | if (run_count > 1) | |
964 | fprintf(stderr, " (%d runs)", run_count); | |
965 | fprintf(stderr, ":\n\n"); | |
966 | } | |
2996f5dd | 967 | |
f5b4a9c3 | 968 | if (no_aggr) { |
361c99a6 | 969 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
970 | print_counter(counter); |
971 | } else { | |
361c99a6 | 972 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
973 | print_counter_aggr(counter); |
974 | } | |
ddcacfa0 | 975 | |
d7470b6a | 976 | if (!csv_output) { |
c3305257 IM |
977 | if (!null_run) |
978 | fprintf(stderr, "\n"); | |
979 | fprintf(stderr, " %17.9f seconds time elapsed", | |
d7470b6a SE |
980 | avg_stats(&walltime_nsecs_stats)/1e9); |
981 | if (run_count > 1) { | |
c3305257 | 982 | fprintf(stderr, " "); |
f99844cb IM |
983 | print_noise_pct(stddev_stats(&walltime_nsecs_stats), |
984 | avg_stats(&walltime_nsecs_stats)); | |
d7470b6a SE |
985 | } |
986 | fprintf(stderr, "\n\n"); | |
566747e6 | 987 | } |
ddcacfa0 IM |
988 | } |
989 | ||
f7b7c26e PZ |
990 | static volatile int signr = -1; |
991 | ||
5242519b | 992 | static void skip_signal(int signo) |
ddcacfa0 | 993 | { |
6be2850e | 994 | if(child_pid == -1) |
60666c63 LW |
995 | done = 1; |
996 | ||
f7b7c26e PZ |
997 | signr = signo; |
998 | } | |
999 | ||
1000 | static void sig_atexit(void) | |
1001 | { | |
933da83a CW |
1002 | if (child_pid != -1) |
1003 | kill(child_pid, SIGTERM); | |
1004 | ||
f7b7c26e PZ |
1005 | if (signr == -1) |
1006 | return; | |
1007 | ||
1008 | signal(signr, SIG_DFL); | |
1009 | kill(getpid(), signr); | |
5242519b IM |
1010 | } |
1011 | ||
1012 | static const char * const stat_usage[] = { | |
60666c63 | 1013 | "perf stat [<options>] [<command>]", |
5242519b IM |
1014 | NULL |
1015 | }; | |
1016 | ||
d7470b6a SE |
1017 | static int stat__set_big_num(const struct option *opt __used, |
1018 | const char *s __used, int unset) | |
1019 | { | |
1020 | big_num_opt = unset ? 0 : 1; | |
1021 | return 0; | |
1022 | } | |
1023 | ||
5242519b | 1024 | static const struct option options[] = { |
361c99a6 | 1025 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
86847b62 TG |
1026 | "event selector. use 'perf list' to list available events", |
1027 | parse_events), | |
cfd748ae FW |
1028 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", |
1029 | "event filter", parse_filter), | |
2e6cdf99 SE |
1030 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, |
1031 | "child tasks do not inherit counters"), | |
5242519b | 1032 | OPT_INTEGER('p', "pid", &target_pid, |
d6d901c2 ZY |
1033 | "stat events on existing process id"), |
1034 | OPT_INTEGER('t', "tid", &target_tid, | |
1035 | "stat events on existing thread id"), | |
5242519b | 1036 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
3d632595 | 1037 | "system-wide collection from all CPUs"), |
b26bc5a7 | 1038 | OPT_BOOLEAN('c', "scale", &scale, |
3d632595 | 1039 | "scale/normalize counters"), |
c0555642 | 1040 | OPT_INCR('v', "verbose", &verbose, |
743ee1f8 | 1041 | "be more verbose (show counter open errors, etc)"), |
42202dd5 IM |
1042 | OPT_INTEGER('r', "repeat", &run_count, |
1043 | "repeat command and print average + stddev (max: 100)"), | |
0cfb7a13 IM |
1044 | OPT_BOOLEAN('n', "null", &null_run, |
1045 | "null run - dont start any counters"), | |
2cba3ffb | 1046 | OPT_INCR('d', "detailed", &detailed_run, |
c6264def | 1047 | "detailed run - start a lot of events"), |
f9cef0a9 IM |
1048 | OPT_BOOLEAN('S', "sync", &sync_run, |
1049 | "call sync() before starting a run"), | |
d7470b6a SE |
1050 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
1051 | "print large numbers with thousands\' separators", | |
1052 | stat__set_big_num), | |
c45c6ea2 SE |
1053 | OPT_STRING('C', "cpu", &cpu_list, "cpu", |
1054 | "list of cpus to monitor in system-wide"), | |
f5b4a9c3 SE |
1055 | OPT_BOOLEAN('A', "no-aggr", &no_aggr, |
1056 | "disable CPU count aggregation"), | |
d7470b6a SE |
1057 | OPT_STRING('x', "field-separator", &csv_sep, "separator", |
1058 | "print counts with custom separator"), | |
023695d9 SE |
1059 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", |
1060 | "monitor event in cgroup name only", | |
1061 | parse_cgroups), | |
5242519b IM |
1062 | OPT_END() |
1063 | }; | |
1064 | ||
2cba3ffb IM |
1065 | /* |
1066 | * Add default attributes, if there were no attributes specified or | |
1067 | * if -d/--detailed, -d -d or -d -d -d is used: | |
1068 | */ | |
1069 | static int add_default_attributes(void) | |
1070 | { | |
1071 | struct perf_evsel *pos; | |
1072 | size_t attr_nr = 0; | |
1073 | size_t c; | |
1074 | ||
1075 | /* Set attrs if no event is selected and !null_run: */ | |
1076 | if (null_run) | |
1077 | return 0; | |
1078 | ||
1079 | if (!evsel_list->nr_entries) { | |
1080 | for (c = 0; c < ARRAY_SIZE(default_attrs); c++) { | |
1081 | pos = perf_evsel__new(default_attrs + c, c + attr_nr); | |
1082 | if (pos == NULL) | |
1083 | return -1; | |
1084 | perf_evlist__add(evsel_list, pos); | |
1085 | } | |
1086 | attr_nr += c; | |
1087 | } | |
1088 | ||
1089 | /* Detailed events get appended to the event list: */ | |
1090 | ||
1091 | if (detailed_run < 1) | |
1092 | return 0; | |
1093 | ||
1094 | /* Append detailed run extra attributes: */ | |
1095 | for (c = 0; c < ARRAY_SIZE(detailed_attrs); c++) { | |
1096 | pos = perf_evsel__new(detailed_attrs + c, c + attr_nr); | |
1097 | if (pos == NULL) | |
1098 | return -1; | |
1099 | perf_evlist__add(evsel_list, pos); | |
1100 | } | |
1101 | attr_nr += c; | |
1102 | ||
1103 | if (detailed_run < 2) | |
1104 | return 0; | |
1105 | ||
1106 | /* Append very detailed run extra attributes: */ | |
1107 | for (c = 0; c < ARRAY_SIZE(very_detailed_attrs); c++) { | |
1108 | pos = perf_evsel__new(very_detailed_attrs + c, c + attr_nr); | |
1109 | if (pos == NULL) | |
1110 | return -1; | |
1111 | perf_evlist__add(evsel_list, pos); | |
1112 | } | |
1113 | ||
1114 | if (detailed_run < 3) | |
1115 | return 0; | |
1116 | ||
1117 | /* Append very, very detailed run extra attributes: */ | |
1118 | for (c = 0; c < ARRAY_SIZE(very_very_detailed_attrs); c++) { | |
1119 | pos = perf_evsel__new(very_very_detailed_attrs + c, c + attr_nr); | |
1120 | if (pos == NULL) | |
1121 | return -1; | |
1122 | perf_evlist__add(evsel_list, pos); | |
1123 | } | |
1124 | ||
1125 | ||
1126 | return 0; | |
1127 | } | |
1128 | ||
f37a291c | 1129 | int cmd_stat(int argc, const char **argv, const char *prefix __used) |
5242519b | 1130 | { |
69aad6f1 ACM |
1131 | struct perf_evsel *pos; |
1132 | int status = -ENOMEM; | |
42202dd5 | 1133 | |
5af52b51 SE |
1134 | setlocale(LC_ALL, ""); |
1135 | ||
7e2ed097 | 1136 | evsel_list = perf_evlist__new(NULL, NULL); |
361c99a6 ACM |
1137 | if (evsel_list == NULL) |
1138 | return -ENOMEM; | |
1139 | ||
a0541234 AB |
1140 | argc = parse_options(argc, argv, options, stat_usage, |
1141 | PARSE_OPT_STOP_AT_NON_OPTION); | |
d7470b6a SE |
1142 | |
1143 | if (csv_sep) | |
1144 | csv_output = true; | |
1145 | else | |
1146 | csv_sep = DEFAULT_SEPARATOR; | |
1147 | ||
1148 | /* | |
1149 | * let the spreadsheet do the pretty-printing | |
1150 | */ | |
1151 | if (csv_output) { | |
1152 | /* User explicitely passed -B? */ | |
1153 | if (big_num_opt == 1) { | |
1154 | fprintf(stderr, "-B option not supported with -x\n"); | |
1155 | usage_with_options(stat_usage, options); | |
1156 | } else /* Nope, so disable big number formatting */ | |
1157 | big_num = false; | |
1158 | } else if (big_num_opt == 0) /* User passed --no-big-num */ | |
1159 | big_num = false; | |
1160 | ||
d6d901c2 | 1161 | if (!argc && target_pid == -1 && target_tid == -1) |
5242519b | 1162 | usage_with_options(stat_usage, options); |
9e9772c4 | 1163 | if (run_count <= 0) |
42202dd5 | 1164 | usage_with_options(stat_usage, options); |
ddcacfa0 | 1165 | |
023695d9 SE |
1166 | /* no_aggr, cgroup are for system-wide only */ |
1167 | if ((no_aggr || nr_cgroups) && !system_wide) { | |
1168 | fprintf(stderr, "both cgroup and no-aggregation " | |
1169 | "modes only available in system-wide mode\n"); | |
1170 | ||
f5b4a9c3 | 1171 | usage_with_options(stat_usage, options); |
023695d9 | 1172 | } |
f5b4a9c3 | 1173 | |
2cba3ffb IM |
1174 | if (add_default_attributes()) |
1175 | goto out; | |
ddcacfa0 | 1176 | |
5c98d466 ACM |
1177 | if (target_pid != -1) |
1178 | target_tid = target_pid; | |
1179 | ||
7e2ed097 ACM |
1180 | evsel_list->threads = thread_map__new(target_pid, target_tid); |
1181 | if (evsel_list->threads == NULL) { | |
5c98d466 ACM |
1182 | pr_err("Problems finding threads of monitor\n"); |
1183 | usage_with_options(stat_usage, options); | |
1184 | } | |
1185 | ||
a12b51c4 | 1186 | if (system_wide) |
7e2ed097 | 1187 | evsel_list->cpus = cpu_map__new(cpu_list); |
a12b51c4 | 1188 | else |
7e2ed097 | 1189 | evsel_list->cpus = cpu_map__dummy_new(); |
ddcacfa0 | 1190 | |
7e2ed097 | 1191 | if (evsel_list->cpus == NULL) { |
60d567e2 | 1192 | perror("failed to parse CPUs map"); |
c45c6ea2 | 1193 | usage_with_options(stat_usage, options); |
60d567e2 ACM |
1194 | return -1; |
1195 | } | |
c45c6ea2 | 1196 | |
361c99a6 | 1197 | list_for_each_entry(pos, &evsel_list->entries, node) { |
c52b12ed | 1198 | if (perf_evsel__alloc_stat_priv(pos) < 0 || |
7e2ed097 ACM |
1199 | perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 || |
1200 | perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0) | |
69aad6f1 | 1201 | goto out_free_fd; |
d6d901c2 ZY |
1202 | } |
1203 | ||
58d7e993 IM |
1204 | /* |
1205 | * We dont want to block the signals - that would cause | |
1206 | * child tasks to inherit that and Ctrl-C would not work. | |
1207 | * What we want is for Ctrl-C to work in the exec()-ed | |
1208 | * task, but being ignored by perf stat itself: | |
1209 | */ | |
f7b7c26e | 1210 | atexit(sig_atexit); |
58d7e993 IM |
1211 | signal(SIGINT, skip_signal); |
1212 | signal(SIGALRM, skip_signal); | |
1213 | signal(SIGABRT, skip_signal); | |
1214 | ||
42202dd5 IM |
1215 | status = 0; |
1216 | for (run_idx = 0; run_idx < run_count; run_idx++) { | |
1217 | if (run_count != 1 && verbose) | |
3d632595 | 1218 | fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1); |
f9cef0a9 IM |
1219 | |
1220 | if (sync_run) | |
1221 | sync(); | |
1222 | ||
42202dd5 IM |
1223 | status = run_perf_stat(argc, argv); |
1224 | } | |
1225 | ||
084ab9f8 ACM |
1226 | if (status != -1) |
1227 | print_stat(argc, argv); | |
69aad6f1 | 1228 | out_free_fd: |
361c99a6 | 1229 | list_for_each_entry(pos, &evsel_list->entries, node) |
69aad6f1 | 1230 | perf_evsel__free_stat_priv(pos); |
7e2ed097 | 1231 | perf_evlist__delete_maps(evsel_list); |
0015e2e1 ACM |
1232 | out: |
1233 | perf_evlist__delete(evsel_list); | |
42202dd5 | 1234 | return status; |
ddcacfa0 | 1235 | } |