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Commit | Line | Data |
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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 | 63 | #define DEFAULT_SEPARATOR " " |
2cee77c4 DA |
64 | #define CNTR_NOT_SUPPORTED "<not supported>" |
65 | #define CNTR_NOT_COUNTED "<not counted>" | |
d7470b6a | 66 | |
cdd6c482 | 67 | static struct perf_event_attr default_attrs[] = { |
ddcacfa0 | 68 | |
56aab464 IM |
69 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, |
70 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, | |
71 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, | |
72 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, | |
f4dbfa8f | 73 | |
56aab464 | 74 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, |
129c04cb IM |
75 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, |
76 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, | |
56aab464 | 77 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, |
56aab464 IM |
78 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, |
79 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, | |
f4dbfa8f | 80 | |
ddcacfa0 | 81 | }; |
5242519b | 82 | |
c6264def | 83 | /* |
2cba3ffb | 84 | * Detailed stats (-d), covering the L1 and last level data caches: |
c6264def IM |
85 | */ |
86 | static struct perf_event_attr detailed_attrs[] = { | |
87 | ||
c6264def IM |
88 | { .type = PERF_TYPE_HW_CACHE, |
89 | .config = | |
90 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
91 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
92 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
93 | ||
94 | { .type = PERF_TYPE_HW_CACHE, | |
95 | .config = | |
96 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
97 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
98 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
99 | ||
100 | { .type = PERF_TYPE_HW_CACHE, | |
101 | .config = | |
102 | PERF_COUNT_HW_CACHE_LL << 0 | | |
103 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
104 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
105 | ||
106 | { .type = PERF_TYPE_HW_CACHE, | |
107 | .config = | |
108 | PERF_COUNT_HW_CACHE_LL << 0 | | |
109 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
110 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
111 | }; | |
112 | ||
2cba3ffb IM |
113 | /* |
114 | * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: | |
115 | */ | |
116 | static struct perf_event_attr very_detailed_attrs[] = { | |
117 | ||
118 | { .type = PERF_TYPE_HW_CACHE, | |
119 | .config = | |
120 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
121 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
122 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
123 | ||
124 | { .type = PERF_TYPE_HW_CACHE, | |
125 | .config = | |
126 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
127 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
128 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
129 | ||
130 | { .type = PERF_TYPE_HW_CACHE, | |
131 | .config = | |
132 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
133 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
134 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
135 | ||
136 | { .type = PERF_TYPE_HW_CACHE, | |
137 | .config = | |
138 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
139 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
140 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
141 | ||
142 | { .type = PERF_TYPE_HW_CACHE, | |
143 | .config = | |
144 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
145 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
146 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
147 | ||
148 | { .type = PERF_TYPE_HW_CACHE, | |
149 | .config = | |
150 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
151 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
152 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
153 | ||
154 | }; | |
155 | ||
156 | /* | |
157 | * Very, very detailed stats (-d -d -d), adding prefetch events: | |
158 | */ | |
159 | static struct perf_event_attr very_very_detailed_attrs[] = { | |
160 | ||
161 | { .type = PERF_TYPE_HW_CACHE, | |
162 | .config = | |
163 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
164 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
165 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
166 | ||
167 | { .type = PERF_TYPE_HW_CACHE, | |
168 | .config = | |
169 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
170 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
171 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
172 | }; | |
173 | ||
174 | ||
175 | ||
361c99a6 ACM |
176 | struct perf_evlist *evsel_list; |
177 | ||
c0555642 | 178 | static bool system_wide = false; |
3d632595 | 179 | static int run_idx = 0; |
ddcacfa0 | 180 | |
3d632595 | 181 | static int run_count = 1; |
2e6cdf99 | 182 | static bool no_inherit = false; |
c0555642 | 183 | static bool scale = true; |
f5b4a9c3 | 184 | static bool no_aggr = false; |
933da83a | 185 | static pid_t target_pid = -1; |
d6d901c2 | 186 | static pid_t target_tid = -1; |
933da83a | 187 | static pid_t child_pid = -1; |
c0555642 | 188 | static bool null_run = false; |
2cba3ffb | 189 | static int detailed_run = 0; |
f9cef0a9 | 190 | static bool sync_run = false; |
201e0b06 | 191 | static bool big_num = true; |
d7470b6a | 192 | static int big_num_opt = -1; |
c45c6ea2 | 193 | static const char *cpu_list; |
d7470b6a SE |
194 | static const char *csv_sep = NULL; |
195 | static bool csv_output = false; | |
43bece79 | 196 | static bool group = false; |
4aa9015f SE |
197 | static const char *output_name = NULL; |
198 | static FILE *output = NULL; | |
56f3bae7 | 199 | static int output_fd; |
5af52b51 | 200 | |
60666c63 LW |
201 | static volatile int done = 0; |
202 | ||
506d4bc8 PZ |
203 | struct stats |
204 | { | |
8a02631a | 205 | double n, mean, M2; |
506d4bc8 | 206 | }; |
42202dd5 | 207 | |
69aad6f1 ACM |
208 | struct perf_stat { |
209 | struct stats res_stats[3]; | |
69aad6f1 ACM |
210 | }; |
211 | ||
c52b12ed | 212 | static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel) |
69aad6f1 | 213 | { |
c52b12ed | 214 | evsel->priv = zalloc(sizeof(struct perf_stat)); |
69aad6f1 ACM |
215 | return evsel->priv == NULL ? -ENOMEM : 0; |
216 | } | |
217 | ||
218 | static void perf_evsel__free_stat_priv(struct perf_evsel *evsel) | |
219 | { | |
220 | free(evsel->priv); | |
221 | evsel->priv = NULL; | |
222 | } | |
223 | ||
9e9772c4 PZ |
224 | static void update_stats(struct stats *stats, u64 val) |
225 | { | |
8a02631a | 226 | double delta; |
9e9772c4 | 227 | |
8a02631a PZ |
228 | stats->n++; |
229 | delta = val - stats->mean; | |
230 | stats->mean += delta / stats->n; | |
231 | stats->M2 += delta*(val - stats->mean); | |
9e9772c4 PZ |
232 | } |
233 | ||
506d4bc8 PZ |
234 | static double avg_stats(struct stats *stats) |
235 | { | |
8a02631a | 236 | return stats->mean; |
506d4bc8 | 237 | } |
42202dd5 | 238 | |
506d4bc8 | 239 | /* |
63d40deb PZ |
240 | * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance |
241 | * | |
8a02631a PZ |
242 | * (\Sum n_i^2) - ((\Sum n_i)^2)/n |
243 | * s^2 = ------------------------------- | |
244 | * n - 1 | |
63d40deb PZ |
245 | * |
246 | * http://en.wikipedia.org/wiki/Stddev | |
247 | * | |
248 | * The std dev of the mean is related to the std dev by: | |
249 | * | |
250 | * s | |
251 | * s_mean = ------- | |
252 | * sqrt(n) | |
253 | * | |
506d4bc8 PZ |
254 | */ |
255 | static double stddev_stats(struct stats *stats) | |
256 | { | |
19f47402 JC |
257 | double variance, variance_mean; |
258 | ||
259 | if (!stats->n) | |
260 | return 0.0; | |
261 | ||
262 | variance = stats->M2 / (stats->n - 1); | |
263 | variance_mean = variance / stats->n; | |
42202dd5 | 264 | |
63d40deb | 265 | return sqrt(variance_mean); |
506d4bc8 | 266 | } |
42202dd5 | 267 | |
f5b4a9c3 SE |
268 | struct stats runtime_nsecs_stats[MAX_NR_CPUS]; |
269 | struct stats runtime_cycles_stats[MAX_NR_CPUS]; | |
d3d1e86d IM |
270 | struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS]; |
271 | struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS]; | |
f5b4a9c3 | 272 | struct stats runtime_branches_stats[MAX_NR_CPUS]; |
d58f4c82 | 273 | struct stats runtime_cacherefs_stats[MAX_NR_CPUS]; |
8bb6c79f | 274 | struct stats runtime_l1_dcache_stats[MAX_NR_CPUS]; |
c3305257 IM |
275 | struct stats runtime_l1_icache_stats[MAX_NR_CPUS]; |
276 | struct stats runtime_ll_cache_stats[MAX_NR_CPUS]; | |
277 | struct stats runtime_itlb_cache_stats[MAX_NR_CPUS]; | |
278 | struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS]; | |
506d4bc8 | 279 | struct stats walltime_nsecs_stats; |
be1ac0d8 | 280 | |
48290609 | 281 | static int create_perf_stat_counter(struct perf_evsel *evsel) |
ddcacfa0 | 282 | { |
69aad6f1 | 283 | struct perf_event_attr *attr = &evsel->attr; |
16c8a109 | 284 | |
ddcacfa0 | 285 | if (scale) |
a21ca2ca IM |
286 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
287 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
ddcacfa0 | 288 | |
5d2cd909 ACM |
289 | attr->inherit = !no_inherit; |
290 | ||
48290609 | 291 | if (system_wide) |
43bece79 | 292 | return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, group); |
48290609 | 293 | |
48290609 ACM |
294 | if (target_pid == -1 && target_tid == -1) { |
295 | attr->disabled = 1; | |
296 | attr->enable_on_exec = 1; | |
ddcacfa0 | 297 | } |
084ab9f8 | 298 | |
43bece79 | 299 | return perf_evsel__open_per_thread(evsel, evsel_list->threads, group); |
ddcacfa0 IM |
300 | } |
301 | ||
c04f5e5d IM |
302 | /* |
303 | * Does the counter have nsecs as a unit? | |
304 | */ | |
daec78a0 | 305 | static inline int nsec_counter(struct perf_evsel *evsel) |
c04f5e5d | 306 | { |
daec78a0 ACM |
307 | if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || |
308 | perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) | |
c04f5e5d IM |
309 | return 1; |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
dcd9936a IM |
314 | /* |
315 | * Update various tracking values we maintain to print | |
316 | * more semantic information such as miss/hit ratios, | |
317 | * instruction rates, etc: | |
318 | */ | |
319 | static void update_shadow_stats(struct perf_evsel *counter, u64 *count) | |
320 | { | |
321 | if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK)) | |
322 | update_stats(&runtime_nsecs_stats[0], count[0]); | |
323 | else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) | |
324 | update_stats(&runtime_cycles_stats[0], count[0]); | |
d3d1e86d IM |
325 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) |
326 | update_stats(&runtime_stalled_cycles_front_stats[0], count[0]); | |
129c04cb | 327 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND)) |
d3d1e86d | 328 | update_stats(&runtime_stalled_cycles_back_stats[0], count[0]); |
dcd9936a IM |
329 | else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS)) |
330 | update_stats(&runtime_branches_stats[0], count[0]); | |
331 | else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES)) | |
332 | update_stats(&runtime_cacherefs_stats[0], count[0]); | |
8bb6c79f IM |
333 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D)) |
334 | update_stats(&runtime_l1_dcache_stats[0], count[0]); | |
c3305257 IM |
335 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I)) |
336 | update_stats(&runtime_l1_icache_stats[0], count[0]); | |
337 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL)) | |
338 | update_stats(&runtime_ll_cache_stats[0], count[0]); | |
339 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB)) | |
340 | update_stats(&runtime_dtlb_cache_stats[0], count[0]); | |
341 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB)) | |
342 | update_stats(&runtime_itlb_cache_stats[0], count[0]); | |
dcd9936a IM |
343 | } |
344 | ||
c04f5e5d | 345 | /* |
2996f5dd | 346 | * Read out the results of a single counter: |
f5b4a9c3 | 347 | * aggregate counts across CPUs in system-wide mode |
c04f5e5d | 348 | */ |
c52b12ed | 349 | static int read_counter_aggr(struct perf_evsel *counter) |
c04f5e5d | 350 | { |
69aad6f1 | 351 | struct perf_stat *ps = counter->priv; |
c52b12ed ACM |
352 | u64 *count = counter->counts->aggr.values; |
353 | int i; | |
2996f5dd | 354 | |
7e2ed097 ACM |
355 | if (__perf_evsel__read(counter, evsel_list->cpus->nr, |
356 | evsel_list->threads->nr, scale) < 0) | |
c52b12ed | 357 | return -1; |
9e9772c4 PZ |
358 | |
359 | for (i = 0; i < 3; i++) | |
69aad6f1 | 360 | update_stats(&ps->res_stats[i], count[i]); |
9e9772c4 PZ |
361 | |
362 | if (verbose) { | |
4aa9015f | 363 | fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
9486aa38 | 364 | event_name(counter), count[0], count[1], count[2]); |
9e9772c4 PZ |
365 | } |
366 | ||
be1ac0d8 IM |
367 | /* |
368 | * Save the full runtime - to allow normalization during printout: | |
369 | */ | |
dcd9936a | 370 | update_shadow_stats(counter, count); |
c52b12ed ACM |
371 | |
372 | return 0; | |
f5b4a9c3 SE |
373 | } |
374 | ||
375 | /* | |
376 | * Read out the results of a single counter: | |
377 | * do not aggregate counts across CPUs in system-wide mode | |
378 | */ | |
c52b12ed | 379 | static int read_counter(struct perf_evsel *counter) |
f5b4a9c3 | 380 | { |
c52b12ed | 381 | u64 *count; |
f5b4a9c3 | 382 | int cpu; |
f5b4a9c3 | 383 | |
7e2ed097 | 384 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
c52b12ed ACM |
385 | if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0) |
386 | return -1; | |
f5b4a9c3 | 387 | |
c52b12ed | 388 | count = counter->counts->cpu[cpu].values; |
f5b4a9c3 | 389 | |
dcd9936a | 390 | update_shadow_stats(counter, count); |
f5b4a9c3 | 391 | } |
c52b12ed ACM |
392 | |
393 | return 0; | |
2996f5dd IM |
394 | } |
395 | ||
f37a291c | 396 | static int run_perf_stat(int argc __used, const char **argv) |
42202dd5 IM |
397 | { |
398 | unsigned long long t0, t1; | |
69aad6f1 | 399 | struct perf_evsel *counter; |
42202dd5 | 400 | int status = 0; |
051ae7f7 | 401 | int child_ready_pipe[2], go_pipe[2]; |
6be2850e | 402 | const bool forks = (argc > 0); |
051ae7f7 | 403 | char buf; |
42202dd5 | 404 | |
60666c63 | 405 | if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) { |
051ae7f7 PM |
406 | perror("failed to create pipes"); |
407 | exit(1); | |
408 | } | |
409 | ||
60666c63 | 410 | if (forks) { |
6be2850e | 411 | if ((child_pid = fork()) < 0) |
60666c63 LW |
412 | perror("failed to fork"); |
413 | ||
6be2850e | 414 | if (!child_pid) { |
60666c63 LW |
415 | close(child_ready_pipe[0]); |
416 | close(go_pipe[1]); | |
417 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); | |
418 | ||
419 | /* | |
420 | * Do a dummy execvp to get the PLT entry resolved, | |
421 | * so we avoid the resolver overhead on the real | |
422 | * execvp call. | |
423 | */ | |
424 | execvp("", (char **)argv); | |
425 | ||
426 | /* | |
427 | * Tell the parent we're ready to go | |
428 | */ | |
429 | close(child_ready_pipe[1]); | |
430 | ||
431 | /* | |
432 | * Wait until the parent tells us to go. | |
433 | */ | |
434 | if (read(go_pipe[0], &buf, 1) == -1) | |
435 | perror("unable to read pipe"); | |
436 | ||
437 | execvp(argv[0], (char **)argv); | |
438 | ||
439 | perror(argv[0]); | |
440 | exit(-1); | |
441 | } | |
051ae7f7 | 442 | |
d6d901c2 | 443 | if (target_tid == -1 && target_pid == -1 && !system_wide) |
7e2ed097 | 444 | evsel_list->threads->map[0] = child_pid; |
d6d901c2 | 445 | |
051ae7f7 | 446 | /* |
60666c63 | 447 | * Wait for the child to be ready to exec. |
051ae7f7 PM |
448 | */ |
449 | close(child_ready_pipe[1]); | |
60666c63 LW |
450 | close(go_pipe[0]); |
451 | if (read(child_ready_pipe[0], &buf, 1) == -1) | |
a92bef0f | 452 | perror("unable to read pipe"); |
60666c63 | 453 | close(child_ready_pipe[0]); |
051ae7f7 PM |
454 | } |
455 | ||
361c99a6 | 456 | list_for_each_entry(counter, &evsel_list->entries, node) { |
48290609 | 457 | if (create_perf_stat_counter(counter) < 0) { |
c63ca0c0 DA |
458 | if (errno == EINVAL || errno == ENOSYS || errno == ENOENT) { |
459 | if (verbose) | |
460 | ui__warning("%s event is not supported by the kernel.\n", | |
461 | event_name(counter)); | |
2cee77c4 | 462 | counter->supported = false; |
ede70290 | 463 | continue; |
c63ca0c0 | 464 | } |
ede70290 IM |
465 | |
466 | if (errno == EPERM || errno == EACCES) { | |
48290609 ACM |
467 | error("You may not have permission to collect %sstats.\n" |
468 | "\t Consider tweaking" | |
469 | " /proc/sys/kernel/perf_event_paranoid or running as root.", | |
470 | system_wide ? "system-wide " : ""); | |
471 | } else { | |
472 | error("open_counter returned with %d (%s). " | |
473 | "/bin/dmesg may provide additional information.\n", | |
474 | errno, strerror(errno)); | |
475 | } | |
476 | if (child_pid != -1) | |
477 | kill(child_pid, SIGTERM); | |
478 | die("Not all events could be opened.\n"); | |
479 | return -1; | |
480 | } | |
2cee77c4 | 481 | counter->supported = true; |
084ab9f8 | 482 | } |
42202dd5 | 483 | |
cfd748ae FW |
484 | if (perf_evlist__set_filters(evsel_list)) { |
485 | error("failed to set filter with %d (%s)\n", errno, | |
486 | strerror(errno)); | |
487 | return -1; | |
488 | } | |
489 | ||
42202dd5 IM |
490 | /* |
491 | * Enable counters and exec the command: | |
492 | */ | |
493 | t0 = rdclock(); | |
42202dd5 | 494 | |
60666c63 LW |
495 | if (forks) { |
496 | close(go_pipe[1]); | |
497 | wait(&status); | |
33e49ea7 AK |
498 | if (WIFSIGNALED(status)) |
499 | psignal(WTERMSIG(status), argv[0]); | |
60666c63 | 500 | } else { |
6be2850e | 501 | while(!done) sleep(1); |
60666c63 | 502 | } |
42202dd5 | 503 | |
42202dd5 IM |
504 | t1 = rdclock(); |
505 | ||
9e9772c4 | 506 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 | 507 | |
f5b4a9c3 | 508 | if (no_aggr) { |
361c99a6 | 509 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 510 | read_counter(counter); |
7e2ed097 | 511 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1); |
c52b12ed | 512 | } |
f5b4a9c3 | 513 | } else { |
361c99a6 | 514 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 515 | read_counter_aggr(counter); |
7e2ed097 ACM |
516 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, |
517 | evsel_list->threads->nr); | |
c52b12ed | 518 | } |
f5b4a9c3 | 519 | } |
c52b12ed | 520 | |
42202dd5 IM |
521 | return WEXITSTATUS(status); |
522 | } | |
523 | ||
f99844cb IM |
524 | static void print_noise_pct(double total, double avg) |
525 | { | |
526 | double pct = 0.0; | |
527 | ||
528 | if (avg) | |
529 | pct = 100.0*total/avg; | |
530 | ||
3ae9a34d | 531 | if (csv_output) |
4aa9015f | 532 | fprintf(output, "%s%.2f%%", csv_sep, pct); |
a1bca6cc | 533 | else if (pct) |
4aa9015f | 534 | fprintf(output, " ( +-%6.2f%% )", pct); |
f99844cb IM |
535 | } |
536 | ||
69aad6f1 | 537 | static void print_noise(struct perf_evsel *evsel, double avg) |
42202dd5 | 538 | { |
69aad6f1 ACM |
539 | struct perf_stat *ps; |
540 | ||
849abde9 PZ |
541 | if (run_count == 1) |
542 | return; | |
543 | ||
69aad6f1 | 544 | ps = evsel->priv; |
f99844cb | 545 | print_noise_pct(stddev_stats(&ps->res_stats[0]), avg); |
42202dd5 IM |
546 | } |
547 | ||
daec78a0 | 548 | static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 549 | { |
506d4bc8 | 550 | double msecs = avg / 1e6; |
d7470b6a | 551 | char cpustr[16] = { '\0', }; |
2cba3ffb | 552 | const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s"; |
44175b6f | 553 | |
f5b4a9c3 | 554 | if (no_aggr) |
d7470b6a SE |
555 | sprintf(cpustr, "CPU%*d%s", |
556 | csv_output ? 0 : -4, | |
7e2ed097 | 557 | evsel_list->cpus->map[cpu], csv_sep); |
d7470b6a | 558 | |
4aa9015f | 559 | fprintf(output, fmt, cpustr, msecs, csv_sep, event_name(evsel)); |
d7470b6a | 560 | |
023695d9 | 561 | if (evsel->cgrp) |
4aa9015f | 562 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 563 | |
d7470b6a SE |
564 | if (csv_output) |
565 | return; | |
44175b6f | 566 | |
daec78a0 | 567 | if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) |
4aa9015f SE |
568 | fprintf(output, " # %8.3f CPUs utilized ", |
569 | avg / avg_stats(&walltime_nsecs_stats)); | |
44175b6f IM |
570 | } |
571 | ||
d3d1e86d IM |
572 | static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg) |
573 | { | |
574 | double total, ratio = 0.0; | |
575 | const char *color; | |
576 | ||
577 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
578 | ||
579 | if (total) | |
580 | ratio = avg / total * 100.0; | |
581 | ||
582 | color = PERF_COLOR_NORMAL; | |
2b427e14 | 583 | if (ratio > 50.0) |
d3d1e86d | 584 | color = PERF_COLOR_RED; |
2b427e14 | 585 | else if (ratio > 30.0) |
d3d1e86d | 586 | color = PERF_COLOR_MAGENTA; |
2b427e14 | 587 | else if (ratio > 10.0) |
d3d1e86d IM |
588 | color = PERF_COLOR_YELLOW; |
589 | ||
4aa9015f SE |
590 | fprintf(output, " # "); |
591 | color_fprintf(output, color, "%6.2f%%", ratio); | |
592 | fprintf(output, " frontend cycles idle "); | |
d3d1e86d IM |
593 | } |
594 | ||
595 | static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg) | |
a5d243d0 IM |
596 | { |
597 | double total, ratio = 0.0; | |
598 | const char *color; | |
599 | ||
600 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
601 | ||
602 | if (total) | |
603 | ratio = avg / total * 100.0; | |
604 | ||
605 | color = PERF_COLOR_NORMAL; | |
606 | if (ratio > 75.0) | |
607 | color = PERF_COLOR_RED; | |
608 | else if (ratio > 50.0) | |
609 | color = PERF_COLOR_MAGENTA; | |
2b427e14 | 610 | else if (ratio > 20.0) |
a5d243d0 IM |
611 | color = PERF_COLOR_YELLOW; |
612 | ||
4aa9015f SE |
613 | fprintf(output, " # "); |
614 | color_fprintf(output, color, "%6.2f%%", ratio); | |
615 | fprintf(output, " backend cycles idle "); | |
a5d243d0 IM |
616 | } |
617 | ||
c78df6c1 IM |
618 | static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
619 | { | |
620 | double total, ratio = 0.0; | |
621 | const char *color; | |
622 | ||
623 | total = avg_stats(&runtime_branches_stats[cpu]); | |
624 | ||
625 | if (total) | |
626 | ratio = avg / total * 100.0; | |
627 | ||
628 | color = PERF_COLOR_NORMAL; | |
629 | if (ratio > 20.0) | |
630 | color = PERF_COLOR_RED; | |
631 | else if (ratio > 10.0) | |
632 | color = PERF_COLOR_MAGENTA; | |
633 | else if (ratio > 5.0) | |
634 | color = PERF_COLOR_YELLOW; | |
635 | ||
4aa9015f SE |
636 | fprintf(output, " # "); |
637 | color_fprintf(output, color, "%6.2f%%", ratio); | |
638 | fprintf(output, " of all branches "); | |
c78df6c1 IM |
639 | } |
640 | ||
8bb6c79f IM |
641 | static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
642 | { | |
643 | double total, ratio = 0.0; | |
644 | const char *color; | |
645 | ||
646 | total = avg_stats(&runtime_l1_dcache_stats[cpu]); | |
647 | ||
648 | if (total) | |
649 | ratio = avg / total * 100.0; | |
650 | ||
651 | color = PERF_COLOR_NORMAL; | |
652 | if (ratio > 20.0) | |
653 | color = PERF_COLOR_RED; | |
654 | else if (ratio > 10.0) | |
655 | color = PERF_COLOR_MAGENTA; | |
656 | else if (ratio > 5.0) | |
657 | color = PERF_COLOR_YELLOW; | |
658 | ||
4aa9015f SE |
659 | fprintf(output, " # "); |
660 | color_fprintf(output, color, "%6.2f%%", ratio); | |
661 | fprintf(output, " of all L1-dcache hits "); | |
8bb6c79f IM |
662 | } |
663 | ||
c3305257 IM |
664 | static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
665 | { | |
666 | double total, ratio = 0.0; | |
667 | const char *color; | |
668 | ||
669 | total = avg_stats(&runtime_l1_icache_stats[cpu]); | |
670 | ||
671 | if (total) | |
672 | ratio = avg / total * 100.0; | |
673 | ||
674 | color = PERF_COLOR_NORMAL; | |
675 | if (ratio > 20.0) | |
676 | color = PERF_COLOR_RED; | |
677 | else if (ratio > 10.0) | |
678 | color = PERF_COLOR_MAGENTA; | |
679 | else if (ratio > 5.0) | |
680 | color = PERF_COLOR_YELLOW; | |
681 | ||
4aa9015f SE |
682 | fprintf(output, " # "); |
683 | color_fprintf(output, color, "%6.2f%%", ratio); | |
684 | fprintf(output, " of all L1-icache hits "); | |
c3305257 IM |
685 | } |
686 | ||
687 | static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
688 | { | |
689 | double total, ratio = 0.0; | |
690 | const char *color; | |
691 | ||
692 | total = avg_stats(&runtime_dtlb_cache_stats[cpu]); | |
693 | ||
694 | if (total) | |
695 | ratio = avg / total * 100.0; | |
696 | ||
697 | color = PERF_COLOR_NORMAL; | |
698 | if (ratio > 20.0) | |
699 | color = PERF_COLOR_RED; | |
700 | else if (ratio > 10.0) | |
701 | color = PERF_COLOR_MAGENTA; | |
702 | else if (ratio > 5.0) | |
703 | color = PERF_COLOR_YELLOW; | |
704 | ||
4aa9015f SE |
705 | fprintf(output, " # "); |
706 | color_fprintf(output, color, "%6.2f%%", ratio); | |
707 | fprintf(output, " of all dTLB cache hits "); | |
c3305257 IM |
708 | } |
709 | ||
710 | static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
711 | { | |
712 | double total, ratio = 0.0; | |
713 | const char *color; | |
714 | ||
715 | total = avg_stats(&runtime_itlb_cache_stats[cpu]); | |
716 | ||
717 | if (total) | |
718 | ratio = avg / total * 100.0; | |
719 | ||
720 | color = PERF_COLOR_NORMAL; | |
721 | if (ratio > 20.0) | |
722 | color = PERF_COLOR_RED; | |
723 | else if (ratio > 10.0) | |
724 | color = PERF_COLOR_MAGENTA; | |
725 | else if (ratio > 5.0) | |
726 | color = PERF_COLOR_YELLOW; | |
727 | ||
4aa9015f SE |
728 | fprintf(output, " # "); |
729 | color_fprintf(output, color, "%6.2f%%", ratio); | |
730 | fprintf(output, " of all iTLB cache hits "); | |
c3305257 IM |
731 | } |
732 | ||
733 | static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
734 | { | |
735 | double total, ratio = 0.0; | |
736 | const char *color; | |
737 | ||
738 | total = avg_stats(&runtime_ll_cache_stats[cpu]); | |
739 | ||
740 | if (total) | |
741 | ratio = avg / total * 100.0; | |
742 | ||
743 | color = PERF_COLOR_NORMAL; | |
744 | if (ratio > 20.0) | |
745 | color = PERF_COLOR_RED; | |
746 | else if (ratio > 10.0) | |
747 | color = PERF_COLOR_MAGENTA; | |
748 | else if (ratio > 5.0) | |
749 | color = PERF_COLOR_YELLOW; | |
750 | ||
4aa9015f SE |
751 | fprintf(output, " # "); |
752 | color_fprintf(output, color, "%6.2f%%", ratio); | |
753 | fprintf(output, " of all LL-cache hits "); | |
c3305257 IM |
754 | } |
755 | ||
daec78a0 | 756 | static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 757 | { |
c7f7fea3 | 758 | double total, ratio = 0.0; |
f5b4a9c3 | 759 | char cpustr[16] = { '\0', }; |
d7470b6a SE |
760 | const char *fmt; |
761 | ||
762 | if (csv_output) | |
763 | fmt = "%s%.0f%s%s"; | |
764 | else if (big_num) | |
2cba3ffb | 765 | fmt = "%s%'18.0f%s%-25s"; |
d7470b6a | 766 | else |
2cba3ffb | 767 | fmt = "%s%18.0f%s%-25s"; |
f5b4a9c3 SE |
768 | |
769 | if (no_aggr) | |
d7470b6a SE |
770 | sprintf(cpustr, "CPU%*d%s", |
771 | csv_output ? 0 : -4, | |
7e2ed097 | 772 | evsel_list->cpus->map[cpu], csv_sep); |
f5b4a9c3 SE |
773 | else |
774 | cpu = 0; | |
c7f7fea3 | 775 | |
4aa9015f | 776 | fprintf(output, fmt, cpustr, avg, csv_sep, event_name(evsel)); |
d7470b6a | 777 | |
023695d9 | 778 | if (evsel->cgrp) |
4aa9015f | 779 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 780 | |
d7470b6a SE |
781 | if (csv_output) |
782 | return; | |
44175b6f | 783 | |
daec78a0 | 784 | if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) { |
f5b4a9c3 | 785 | total = avg_stats(&runtime_cycles_stats[cpu]); |
c7f7fea3 IM |
786 | |
787 | if (total) | |
788 | ratio = avg / total; | |
789 | ||
4aa9015f | 790 | fprintf(output, " # %5.2f insns per cycle ", ratio); |
481f988a | 791 | |
d3d1e86d IM |
792 | total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]); |
793 | total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu])); | |
481f988a IM |
794 | |
795 | if (total && avg) { | |
796 | ratio = total / avg; | |
4aa9015f | 797 | fprintf(output, "\n # %5.2f stalled cycles per insn", ratio); |
481f988a IM |
798 | } |
799 | ||
daec78a0 | 800 | } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) && |
f5b4a9c3 | 801 | runtime_branches_stats[cpu].n != 0) { |
c78df6c1 | 802 | print_branch_misses(cpu, evsel, avg); |
8bb6c79f IM |
803 | } else if ( |
804 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
805 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D | | |
806 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
807 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
c6264def | 808 | runtime_l1_dcache_stats[cpu].n != 0) { |
8bb6c79f | 809 | print_l1_dcache_misses(cpu, evsel, avg); |
c3305257 IM |
810 | } else if ( |
811 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
812 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I | | |
813 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
814 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
815 | runtime_l1_icache_stats[cpu].n != 0) { | |
816 | print_l1_icache_misses(cpu, evsel, avg); | |
817 | } else if ( | |
818 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
819 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB | | |
820 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
821 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
822 | runtime_dtlb_cache_stats[cpu].n != 0) { | |
823 | print_dtlb_cache_misses(cpu, evsel, avg); | |
824 | } else if ( | |
825 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
826 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB | | |
827 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
828 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
829 | runtime_itlb_cache_stats[cpu].n != 0) { | |
830 | print_itlb_cache_misses(cpu, evsel, avg); | |
831 | } else if ( | |
832 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
833 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL | | |
834 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
835 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
836 | runtime_ll_cache_stats[cpu].n != 0) { | |
837 | print_ll_cache_misses(cpu, evsel, avg); | |
d58f4c82 IM |
838 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) && |
839 | runtime_cacherefs_stats[cpu].n != 0) { | |
840 | total = avg_stats(&runtime_cacherefs_stats[cpu]); | |
841 | ||
842 | if (total) | |
843 | ratio = avg * 100 / total; | |
844 | ||
4aa9015f | 845 | fprintf(output, " # %8.3f %% of all cache refs ", ratio); |
d58f4c82 | 846 | |
d3d1e86d IM |
847 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) { |
848 | print_stalled_cycles_frontend(cpu, evsel, avg); | |
129c04cb | 849 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) { |
d3d1e86d | 850 | print_stalled_cycles_backend(cpu, evsel, avg); |
481f988a | 851 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) { |
f5b4a9c3 | 852 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
c7f7fea3 IM |
853 | |
854 | if (total) | |
481f988a | 855 | ratio = 1.0 * avg / total; |
c7f7fea3 | 856 | |
4aa9015f | 857 | fprintf(output, " # %8.3f GHz ", ratio); |
481f988a IM |
858 | } else if (runtime_nsecs_stats[cpu].n != 0) { |
859 | total = avg_stats(&runtime_nsecs_stats[cpu]); | |
11ba2b85 IM |
860 | |
861 | if (total) | |
481f988a | 862 | ratio = 1000.0 * avg / total; |
11ba2b85 | 863 | |
4aa9015f | 864 | fprintf(output, " # %8.3f M/sec ", ratio); |
a5d243d0 | 865 | } else { |
4aa9015f | 866 | fprintf(output, " "); |
44175b6f | 867 | } |
44175b6f IM |
868 | } |
869 | ||
2996f5dd IM |
870 | /* |
871 | * Print out the results of a single counter: | |
f5b4a9c3 | 872 | * aggregated counts in system-wide mode |
2996f5dd | 873 | */ |
69aad6f1 | 874 | static void print_counter_aggr(struct perf_evsel *counter) |
2996f5dd | 875 | { |
69aad6f1 ACM |
876 | struct perf_stat *ps = counter->priv; |
877 | double avg = avg_stats(&ps->res_stats[0]); | |
c52b12ed | 878 | int scaled = counter->counts->scaled; |
2996f5dd | 879 | |
2996f5dd | 880 | if (scaled == -1) { |
4aa9015f | 881 | fprintf(output, "%*s%s%*s", |
d7470b6a | 882 | csv_output ? 0 : 18, |
2cee77c4 | 883 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
023695d9 SE |
884 | csv_sep, |
885 | csv_output ? 0 : -24, | |
886 | event_name(counter)); | |
887 | ||
888 | if (counter->cgrp) | |
4aa9015f | 889 | fprintf(output, "%s%s", csv_sep, counter->cgrp->name); |
023695d9 | 890 | |
4aa9015f | 891 | fputc('\n', output); |
2996f5dd IM |
892 | return; |
893 | } | |
c04f5e5d | 894 | |
44175b6f | 895 | if (nsec_counter(counter)) |
f5b4a9c3 | 896 | nsec_printout(-1, counter, avg); |
44175b6f | 897 | else |
f5b4a9c3 | 898 | abs_printout(-1, counter, avg); |
849abde9 | 899 | |
3ae9a34d ZH |
900 | print_noise(counter, avg); |
901 | ||
d7470b6a | 902 | if (csv_output) { |
4aa9015f | 903 | fputc('\n', output); |
d7470b6a SE |
904 | return; |
905 | } | |
906 | ||
506d4bc8 PZ |
907 | if (scaled) { |
908 | double avg_enabled, avg_running; | |
909 | ||
69aad6f1 ACM |
910 | avg_enabled = avg_stats(&ps->res_stats[1]); |
911 | avg_running = avg_stats(&ps->res_stats[2]); | |
d7c29318 | 912 | |
4aa9015f | 913 | fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled); |
506d4bc8 | 914 | } |
4aa9015f | 915 | fprintf(output, "\n"); |
c04f5e5d IM |
916 | } |
917 | ||
f5b4a9c3 SE |
918 | /* |
919 | * Print out the results of a single counter: | |
920 | * does not use aggregated count in system-wide | |
921 | */ | |
69aad6f1 | 922 | static void print_counter(struct perf_evsel *counter) |
f5b4a9c3 SE |
923 | { |
924 | u64 ena, run, val; | |
925 | int cpu; | |
926 | ||
7e2ed097 | 927 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
c52b12ed ACM |
928 | val = counter->counts->cpu[cpu].val; |
929 | ena = counter->counts->cpu[cpu].ena; | |
930 | run = counter->counts->cpu[cpu].run; | |
f5b4a9c3 | 931 | if (run == 0 || ena == 0) { |
4aa9015f | 932 | fprintf(output, "CPU%*d%s%*s%s%*s", |
d7470b6a | 933 | csv_output ? 0 : -4, |
7e2ed097 | 934 | evsel_list->cpus->map[cpu], csv_sep, |
d7470b6a | 935 | csv_output ? 0 : 18, |
2cee77c4 DA |
936 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
937 | csv_sep, | |
023695d9 | 938 | csv_output ? 0 : -24, |
d7470b6a | 939 | event_name(counter)); |
f5b4a9c3 | 940 | |
023695d9 | 941 | if (counter->cgrp) |
4aa9015f SE |
942 | fprintf(output, "%s%s", |
943 | csv_sep, counter->cgrp->name); | |
023695d9 | 944 | |
4aa9015f | 945 | fputc('\n', output); |
f5b4a9c3 SE |
946 | continue; |
947 | } | |
948 | ||
949 | if (nsec_counter(counter)) | |
950 | nsec_printout(cpu, counter, val); | |
951 | else | |
952 | abs_printout(cpu, counter, val); | |
953 | ||
d7470b6a SE |
954 | if (!csv_output) { |
955 | print_noise(counter, 1.0); | |
f5b4a9c3 | 956 | |
c6264def | 957 | if (run != ena) |
4aa9015f SE |
958 | fprintf(output, " (%.2f%%)", |
959 | 100.0 * run / ena); | |
f5b4a9c3 | 960 | } |
4aa9015f | 961 | fputc('\n', output); |
f5b4a9c3 SE |
962 | } |
963 | } | |
964 | ||
42202dd5 IM |
965 | static void print_stat(int argc, const char **argv) |
966 | { | |
69aad6f1 ACM |
967 | struct perf_evsel *counter; |
968 | int i; | |
42202dd5 | 969 | |
ddcacfa0 IM |
970 | fflush(stdout); |
971 | ||
d7470b6a | 972 | if (!csv_output) { |
4aa9015f SE |
973 | fprintf(output, "\n"); |
974 | fprintf(output, " Performance counter stats for "); | |
d7470b6a | 975 | if(target_pid == -1 && target_tid == -1) { |
4aa9015f | 976 | fprintf(output, "\'%s", argv[0]); |
d7470b6a | 977 | for (i = 1; i < argc; i++) |
4aa9015f | 978 | fprintf(output, " %s", argv[i]); |
d7470b6a | 979 | } else if (target_pid != -1) |
4aa9015f | 980 | fprintf(output, "process id \'%d", target_pid); |
d7470b6a | 981 | else |
4aa9015f | 982 | fprintf(output, "thread id \'%d", target_tid); |
44db76c8 | 983 | |
4aa9015f | 984 | fprintf(output, "\'"); |
d7470b6a | 985 | if (run_count > 1) |
4aa9015f SE |
986 | fprintf(output, " (%d runs)", run_count); |
987 | fprintf(output, ":\n\n"); | |
d7470b6a | 988 | } |
2996f5dd | 989 | |
f5b4a9c3 | 990 | if (no_aggr) { |
361c99a6 | 991 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
992 | print_counter(counter); |
993 | } else { | |
361c99a6 | 994 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
995 | print_counter_aggr(counter); |
996 | } | |
ddcacfa0 | 997 | |
d7470b6a | 998 | if (!csv_output) { |
c3305257 | 999 | if (!null_run) |
4aa9015f SE |
1000 | fprintf(output, "\n"); |
1001 | fprintf(output, " %17.9f seconds time elapsed", | |
d7470b6a SE |
1002 | avg_stats(&walltime_nsecs_stats)/1e9); |
1003 | if (run_count > 1) { | |
4aa9015f | 1004 | fprintf(output, " "); |
f99844cb IM |
1005 | print_noise_pct(stddev_stats(&walltime_nsecs_stats), |
1006 | avg_stats(&walltime_nsecs_stats)); | |
d7470b6a | 1007 | } |
4aa9015f | 1008 | fprintf(output, "\n\n"); |
566747e6 | 1009 | } |
ddcacfa0 IM |
1010 | } |
1011 | ||
f7b7c26e PZ |
1012 | static volatile int signr = -1; |
1013 | ||
5242519b | 1014 | static void skip_signal(int signo) |
ddcacfa0 | 1015 | { |
6be2850e | 1016 | if(child_pid == -1) |
60666c63 LW |
1017 | done = 1; |
1018 | ||
f7b7c26e PZ |
1019 | signr = signo; |
1020 | } | |
1021 | ||
1022 | static void sig_atexit(void) | |
1023 | { | |
933da83a CW |
1024 | if (child_pid != -1) |
1025 | kill(child_pid, SIGTERM); | |
1026 | ||
f7b7c26e PZ |
1027 | if (signr == -1) |
1028 | return; | |
1029 | ||
1030 | signal(signr, SIG_DFL); | |
1031 | kill(getpid(), signr); | |
5242519b IM |
1032 | } |
1033 | ||
1034 | static const char * const stat_usage[] = { | |
60666c63 | 1035 | "perf stat [<options>] [<command>]", |
5242519b IM |
1036 | NULL |
1037 | }; | |
1038 | ||
d7470b6a SE |
1039 | static int stat__set_big_num(const struct option *opt __used, |
1040 | const char *s __used, int unset) | |
1041 | { | |
1042 | big_num_opt = unset ? 0 : 1; | |
1043 | return 0; | |
1044 | } | |
1045 | ||
4aa9015f SE |
1046 | static bool append_file; |
1047 | ||
5242519b | 1048 | static const struct option options[] = { |
361c99a6 | 1049 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
86847b62 | 1050 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1051 | parse_events_option), |
cfd748ae FW |
1052 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", |
1053 | "event filter", parse_filter), | |
2e6cdf99 SE |
1054 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, |
1055 | "child tasks do not inherit counters"), | |
5242519b | 1056 | OPT_INTEGER('p', "pid", &target_pid, |
d6d901c2 ZY |
1057 | "stat events on existing process id"), |
1058 | OPT_INTEGER('t', "tid", &target_tid, | |
1059 | "stat events on existing thread id"), | |
5242519b | 1060 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
3d632595 | 1061 | "system-wide collection from all CPUs"), |
43bece79 LM |
1062 | OPT_BOOLEAN('g', "group", &group, |
1063 | "put the counters into a counter group"), | |
b26bc5a7 | 1064 | OPT_BOOLEAN('c', "scale", &scale, |
3d632595 | 1065 | "scale/normalize counters"), |
c0555642 | 1066 | OPT_INCR('v', "verbose", &verbose, |
743ee1f8 | 1067 | "be more verbose (show counter open errors, etc)"), |
42202dd5 IM |
1068 | OPT_INTEGER('r', "repeat", &run_count, |
1069 | "repeat command and print average + stddev (max: 100)"), | |
0cfb7a13 IM |
1070 | OPT_BOOLEAN('n', "null", &null_run, |
1071 | "null run - dont start any counters"), | |
2cba3ffb | 1072 | OPT_INCR('d', "detailed", &detailed_run, |
c6264def | 1073 | "detailed run - start a lot of events"), |
f9cef0a9 IM |
1074 | OPT_BOOLEAN('S', "sync", &sync_run, |
1075 | "call sync() before starting a run"), | |
d7470b6a SE |
1076 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
1077 | "print large numbers with thousands\' separators", | |
1078 | stat__set_big_num), | |
c45c6ea2 SE |
1079 | OPT_STRING('C', "cpu", &cpu_list, "cpu", |
1080 | "list of cpus to monitor in system-wide"), | |
f5b4a9c3 SE |
1081 | OPT_BOOLEAN('A', "no-aggr", &no_aggr, |
1082 | "disable CPU count aggregation"), | |
d7470b6a SE |
1083 | OPT_STRING('x', "field-separator", &csv_sep, "separator", |
1084 | "print counts with custom separator"), | |
023695d9 SE |
1085 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", |
1086 | "monitor event in cgroup name only", | |
1087 | parse_cgroups), | |
4aa9015f SE |
1088 | OPT_STRING('o', "output", &output_name, "file", |
1089 | "output file name"), | |
1090 | OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), | |
56f3bae7 JC |
1091 | OPT_INTEGER(0, "log-fd", &output_fd, |
1092 | "log output to fd, instead of stderr"), | |
5242519b IM |
1093 | OPT_END() |
1094 | }; | |
1095 | ||
2cba3ffb IM |
1096 | /* |
1097 | * Add default attributes, if there were no attributes specified or | |
1098 | * if -d/--detailed, -d -d or -d -d -d is used: | |
1099 | */ | |
1100 | static int add_default_attributes(void) | |
1101 | { | |
1102 | struct perf_evsel *pos; | |
1103 | size_t attr_nr = 0; | |
1104 | size_t c; | |
1105 | ||
1106 | /* Set attrs if no event is selected and !null_run: */ | |
1107 | if (null_run) | |
1108 | return 0; | |
1109 | ||
1110 | if (!evsel_list->nr_entries) { | |
1111 | for (c = 0; c < ARRAY_SIZE(default_attrs); c++) { | |
1112 | pos = perf_evsel__new(default_attrs + c, c + attr_nr); | |
1113 | if (pos == NULL) | |
1114 | return -1; | |
1115 | perf_evlist__add(evsel_list, pos); | |
1116 | } | |
1117 | attr_nr += c; | |
1118 | } | |
1119 | ||
1120 | /* Detailed events get appended to the event list: */ | |
1121 | ||
1122 | if (detailed_run < 1) | |
1123 | return 0; | |
1124 | ||
1125 | /* Append detailed run extra attributes: */ | |
1126 | for (c = 0; c < ARRAY_SIZE(detailed_attrs); c++) { | |
1127 | pos = perf_evsel__new(detailed_attrs + c, c + attr_nr); | |
1128 | if (pos == NULL) | |
1129 | return -1; | |
1130 | perf_evlist__add(evsel_list, pos); | |
1131 | } | |
1132 | attr_nr += c; | |
1133 | ||
1134 | if (detailed_run < 2) | |
1135 | return 0; | |
1136 | ||
1137 | /* Append very detailed run extra attributes: */ | |
1138 | for (c = 0; c < ARRAY_SIZE(very_detailed_attrs); c++) { | |
1139 | pos = perf_evsel__new(very_detailed_attrs + c, c + attr_nr); | |
1140 | if (pos == NULL) | |
1141 | return -1; | |
1142 | perf_evlist__add(evsel_list, pos); | |
1143 | } | |
1144 | ||
1145 | if (detailed_run < 3) | |
1146 | return 0; | |
1147 | ||
1148 | /* Append very, very detailed run extra attributes: */ | |
1149 | for (c = 0; c < ARRAY_SIZE(very_very_detailed_attrs); c++) { | |
1150 | pos = perf_evsel__new(very_very_detailed_attrs + c, c + attr_nr); | |
1151 | if (pos == NULL) | |
1152 | return -1; | |
1153 | perf_evlist__add(evsel_list, pos); | |
1154 | } | |
1155 | ||
1156 | ||
1157 | return 0; | |
1158 | } | |
1159 | ||
f37a291c | 1160 | int cmd_stat(int argc, const char **argv, const char *prefix __used) |
5242519b | 1161 | { |
69aad6f1 ACM |
1162 | struct perf_evsel *pos; |
1163 | int status = -ENOMEM; | |
4aa9015f | 1164 | const char *mode; |
42202dd5 | 1165 | |
5af52b51 SE |
1166 | setlocale(LC_ALL, ""); |
1167 | ||
7e2ed097 | 1168 | evsel_list = perf_evlist__new(NULL, NULL); |
361c99a6 ACM |
1169 | if (evsel_list == NULL) |
1170 | return -ENOMEM; | |
1171 | ||
a0541234 AB |
1172 | argc = parse_options(argc, argv, options, stat_usage, |
1173 | PARSE_OPT_STOP_AT_NON_OPTION); | |
d7470b6a | 1174 | |
4aa9015f SE |
1175 | output = stderr; |
1176 | if (output_name && strcmp(output_name, "-")) | |
1177 | output = NULL; | |
1178 | ||
56f3bae7 JC |
1179 | if (output_name && output_fd) { |
1180 | fprintf(stderr, "cannot use both --output and --log-fd\n"); | |
1181 | usage_with_options(stat_usage, options); | |
1182 | } | |
4aa9015f SE |
1183 | if (!output) { |
1184 | struct timespec tm; | |
1185 | mode = append_file ? "a" : "w"; | |
1186 | ||
1187 | output = fopen(output_name, mode); | |
1188 | if (!output) { | |
1189 | perror("failed to create output file"); | |
1190 | exit(-1); | |
1191 | } | |
1192 | clock_gettime(CLOCK_REALTIME, &tm); | |
1193 | fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); | |
56f3bae7 JC |
1194 | } else if (output_fd != 2) { |
1195 | mode = append_file ? "a" : "w"; | |
1196 | output = fdopen(output_fd, mode); | |
1197 | if (!output) { | |
1198 | perror("Failed opening logfd"); | |
1199 | return -errno; | |
1200 | } | |
4aa9015f SE |
1201 | } |
1202 | ||
d4ffd04d | 1203 | if (csv_sep) { |
d7470b6a | 1204 | csv_output = true; |
d4ffd04d JC |
1205 | if (!strcmp(csv_sep, "\\t")) |
1206 | csv_sep = "\t"; | |
1207 | } else | |
d7470b6a SE |
1208 | csv_sep = DEFAULT_SEPARATOR; |
1209 | ||
1210 | /* | |
1211 | * let the spreadsheet do the pretty-printing | |
1212 | */ | |
1213 | if (csv_output) { | |
61a9f324 | 1214 | /* User explicitly passed -B? */ |
d7470b6a SE |
1215 | if (big_num_opt == 1) { |
1216 | fprintf(stderr, "-B option not supported with -x\n"); | |
1217 | usage_with_options(stat_usage, options); | |
1218 | } else /* Nope, so disable big number formatting */ | |
1219 | big_num = false; | |
1220 | } else if (big_num_opt == 0) /* User passed --no-big-num */ | |
1221 | big_num = false; | |
1222 | ||
d6d901c2 | 1223 | if (!argc && target_pid == -1 && target_tid == -1) |
5242519b | 1224 | usage_with_options(stat_usage, options); |
9e9772c4 | 1225 | if (run_count <= 0) |
42202dd5 | 1226 | usage_with_options(stat_usage, options); |
ddcacfa0 | 1227 | |
023695d9 SE |
1228 | /* no_aggr, cgroup are for system-wide only */ |
1229 | if ((no_aggr || nr_cgroups) && !system_wide) { | |
1230 | fprintf(stderr, "both cgroup and no-aggregation " | |
1231 | "modes only available in system-wide mode\n"); | |
1232 | ||
f5b4a9c3 | 1233 | usage_with_options(stat_usage, options); |
023695d9 | 1234 | } |
f5b4a9c3 | 1235 | |
2cba3ffb IM |
1236 | if (add_default_attributes()) |
1237 | goto out; | |
ddcacfa0 | 1238 | |
5c98d466 ACM |
1239 | if (target_pid != -1) |
1240 | target_tid = target_pid; | |
1241 | ||
7e2ed097 ACM |
1242 | evsel_list->threads = thread_map__new(target_pid, target_tid); |
1243 | if (evsel_list->threads == NULL) { | |
5c98d466 ACM |
1244 | pr_err("Problems finding threads of monitor\n"); |
1245 | usage_with_options(stat_usage, options); | |
1246 | } | |
1247 | ||
a12b51c4 | 1248 | if (system_wide) |
7e2ed097 | 1249 | evsel_list->cpus = cpu_map__new(cpu_list); |
a12b51c4 | 1250 | else |
7e2ed097 | 1251 | evsel_list->cpus = cpu_map__dummy_new(); |
ddcacfa0 | 1252 | |
7e2ed097 | 1253 | if (evsel_list->cpus == NULL) { |
60d567e2 | 1254 | perror("failed to parse CPUs map"); |
c45c6ea2 | 1255 | usage_with_options(stat_usage, options); |
60d567e2 ACM |
1256 | return -1; |
1257 | } | |
c45c6ea2 | 1258 | |
361c99a6 | 1259 | list_for_each_entry(pos, &evsel_list->entries, node) { |
c52b12ed | 1260 | if (perf_evsel__alloc_stat_priv(pos) < 0 || |
7e2ed097 ACM |
1261 | perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 || |
1262 | perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0) | |
69aad6f1 | 1263 | goto out_free_fd; |
d6d901c2 ZY |
1264 | } |
1265 | ||
58d7e993 IM |
1266 | /* |
1267 | * We dont want to block the signals - that would cause | |
1268 | * child tasks to inherit that and Ctrl-C would not work. | |
1269 | * What we want is for Ctrl-C to work in the exec()-ed | |
1270 | * task, but being ignored by perf stat itself: | |
1271 | */ | |
f7b7c26e | 1272 | atexit(sig_atexit); |
58d7e993 IM |
1273 | signal(SIGINT, skip_signal); |
1274 | signal(SIGALRM, skip_signal); | |
1275 | signal(SIGABRT, skip_signal); | |
1276 | ||
42202dd5 IM |
1277 | status = 0; |
1278 | for (run_idx = 0; run_idx < run_count; run_idx++) { | |
1279 | if (run_count != 1 && verbose) | |
4aa9015f SE |
1280 | fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
1281 | run_idx + 1); | |
f9cef0a9 IM |
1282 | |
1283 | if (sync_run) | |
1284 | sync(); | |
1285 | ||
42202dd5 IM |
1286 | status = run_perf_stat(argc, argv); |
1287 | } | |
1288 | ||
084ab9f8 ACM |
1289 | if (status != -1) |
1290 | print_stat(argc, argv); | |
69aad6f1 | 1291 | out_free_fd: |
361c99a6 | 1292 | list_for_each_entry(pos, &evsel_list->entries, node) |
69aad6f1 | 1293 | perf_evsel__free_stat_priv(pos); |
7e2ed097 | 1294 | perf_evlist__delete_maps(evsel_list); |
0015e2e1 ACM |
1295 | out: |
1296 | perf_evlist__delete(evsel_list); | |
42202dd5 | 1297 | return status; |
ddcacfa0 | 1298 | } |