1// SPDX-License-Identifier: GPL-2.0 2/* Copyright (c) 2020 Facebook */ 3#define _GNU_SOURCE 4#include <argp.h> 5#include <linux/compiler.h> 6#include <sys/time.h> 7#include <sched.h> 8#include <fcntl.h> 9#include <pthread.h> 10#include <sys/sysinfo.h> 11#include <signal.h> 12#include "bench.h" 13#include "testing_helpers.h" 14 15struct env env = { 16 .warmup_sec = 1, 17 .duration_sec = 5, 18 .affinity = false, 19 .quiet = false, 20 .consumer_cnt = 0, 21 .producer_cnt = 1, 22}; 23 24static int libbpf_print_fn(enum libbpf_print_level level, 25 const char *format, va_list args) 26{ 27 if (level == LIBBPF_DEBUG && !env.verbose) 28 return 0; 29 return vfprintf(stderr, format, args); 30} 31 32void setup_libbpf(void) 33{ 34 libbpf_set_strict_mode(LIBBPF_STRICT_ALL); 35 libbpf_set_print(libbpf_print_fn); 36} 37 38void false_hits_report_progress(int iter, struct bench_res *res, long delta_ns) 39{ 40 long total = res->false_hits + res->hits + res->drops; 41 42 printf("Iter %3d (%7.3lfus): ", 43 iter, (delta_ns - 1000000000) / 1000.0); 44 45 printf("%ld false hits of %ld total operations. Percentage = %2.2f %%\n", 46 res->false_hits, total, ((float)res->false_hits / total) * 100); 47} 48 49void false_hits_report_final(struct bench_res res[], int res_cnt) 50{ 51 long total_hits = 0, total_drops = 0, total_false_hits = 0, total_ops = 0; 52 int i; 53 54 for (i = 0; i < res_cnt; i++) { 55 total_hits += res[i].hits; 56 total_false_hits += res[i].false_hits; 57 total_drops += res[i].drops; 58 } 59 total_ops = total_hits + total_false_hits + total_drops; 60 61 printf("Summary: %ld false hits of %ld total operations. ", 62 total_false_hits, total_ops); 63 printf("Percentage = %2.2f %%\n", 64 ((float)total_false_hits / total_ops) * 100); 65} 66 67void hits_drops_report_progress(int iter, struct bench_res *res, long delta_ns) 68{ 69 double hits_per_sec, drops_per_sec; 70 double hits_per_prod; 71 72 hits_per_sec = res->hits / 1000000.0 / (delta_ns / 1000000000.0); 73 hits_per_prod = hits_per_sec / env.producer_cnt; 74 drops_per_sec = res->drops / 1000000.0 / (delta_ns / 1000000000.0); 75 76 printf("Iter %3d (%7.3lfus): ", 77 iter, (delta_ns - 1000000000) / 1000.0); 78 79 printf("hits %8.3lfM/s (%7.3lfM/prod), drops %8.3lfM/s, total operations %8.3lfM/s\n", 80 hits_per_sec, hits_per_prod, drops_per_sec, hits_per_sec + drops_per_sec); 81} 82 83void 84grace_period_latency_basic_stats(struct bench_res res[], int res_cnt, struct basic_stats *gp_stat) 85{ 86 int i; 87 88 memset(gp_stat, 0, sizeof(struct basic_stats)); 89 90 for (i = 0; i < res_cnt; i++) 91 gp_stat->mean += res[i].gp_ns / 1000.0 / (double)res[i].gp_ct / (0.0 + res_cnt); 92 93#define IT_MEAN_DIFF (res[i].gp_ns / 1000.0 / (double)res[i].gp_ct - gp_stat->mean) 94 if (res_cnt > 1) { 95 for (i = 0; i < res_cnt; i++) 96 gp_stat->stddev += (IT_MEAN_DIFF * IT_MEAN_DIFF) / (res_cnt - 1.0); 97 } 98 gp_stat->stddev = sqrt(gp_stat->stddev); 99#undef IT_MEAN_DIFF 100} 101 102void 103grace_period_ticks_basic_stats(struct bench_res res[], int res_cnt, struct basic_stats *gp_stat) 104{ 105 int i; 106 107 memset(gp_stat, 0, sizeof(struct basic_stats)); 108 for (i = 0; i < res_cnt; i++) 109 gp_stat->mean += res[i].stime / (double)res[i].gp_ct / (0.0 + res_cnt); 110 111#define IT_MEAN_DIFF (res[i].stime / (double)res[i].gp_ct - gp_stat->mean) 112 if (res_cnt > 1) { 113 for (i = 0; i < res_cnt; i++) 114 gp_stat->stddev += (IT_MEAN_DIFF * IT_MEAN_DIFF) / (res_cnt - 1.0); 115 } 116 gp_stat->stddev = sqrt(gp_stat->stddev); 117#undef IT_MEAN_DIFF 118} 119 120void hits_drops_report_final(struct bench_res res[], int res_cnt) 121{ 122 int i; 123 double hits_mean = 0.0, drops_mean = 0.0, total_ops_mean = 0.0; 124 double hits_stddev = 0.0, drops_stddev = 0.0, total_ops_stddev = 0.0; 125 double total_ops; 126 127 for (i = 0; i < res_cnt; i++) { 128 hits_mean += res[i].hits / 1000000.0 / (0.0 + res_cnt); 129 drops_mean += res[i].drops / 1000000.0 / (0.0 + res_cnt); 130 } 131 total_ops_mean = hits_mean + drops_mean; 132 133 if (res_cnt > 1) { 134 for (i = 0; i < res_cnt; i++) { 135 hits_stddev += (hits_mean - res[i].hits / 1000000.0) * 136 (hits_mean - res[i].hits / 1000000.0) / 137 (res_cnt - 1.0); 138 drops_stddev += (drops_mean - res[i].drops / 1000000.0) * 139 (drops_mean - res[i].drops / 1000000.0) / 140 (res_cnt - 1.0); 141 total_ops = res[i].hits + res[i].drops; 142 total_ops_stddev += (total_ops_mean - total_ops / 1000000.0) * 143 (total_ops_mean - total_ops / 1000000.0) / 144 (res_cnt - 1.0); 145 } 146 hits_stddev = sqrt(hits_stddev); 147 drops_stddev = sqrt(drops_stddev); 148 total_ops_stddev = sqrt(total_ops_stddev); 149 } 150 printf("Summary: hits %8.3lf \u00B1 %5.3lfM/s (%7.3lfM/prod), ", 151 hits_mean, hits_stddev, hits_mean / env.producer_cnt); 152 printf("drops %8.3lf \u00B1 %5.3lfM/s, ", 153 drops_mean, drops_stddev); 154 printf("total operations %8.3lf \u00B1 %5.3lfM/s\n", 155 total_ops_mean, total_ops_stddev); 156} 157 158void ops_report_progress(int iter, struct bench_res *res, long delta_ns) 159{ 160 double hits_per_sec, hits_per_prod; 161 162 hits_per_sec = res->hits / 1000000.0 / (delta_ns / 1000000000.0); 163 hits_per_prod = hits_per_sec / env.producer_cnt; 164 165 printf("Iter %3d (%7.3lfus): ", iter, (delta_ns - 1000000000) / 1000.0); 166 167 printf("hits %8.3lfM/s (%7.3lfM/prod)\n", hits_per_sec, hits_per_prod); 168} 169 170void ops_report_final(struct bench_res res[], int res_cnt) 171{ 172 double hits_mean = 0.0, hits_stddev = 0.0; 173 int i; 174 175 for (i = 0; i < res_cnt; i++) 176 hits_mean += res[i].hits / 1000000.0 / (0.0 + res_cnt); 177 178 if (res_cnt > 1) { 179 for (i = 0; i < res_cnt; i++) 180 hits_stddev += (hits_mean - res[i].hits / 1000000.0) * 181 (hits_mean - res[i].hits / 1000000.0) / 182 (res_cnt - 1.0); 183 184 hits_stddev = sqrt(hits_stddev); 185 } 186 printf("Summary: throughput %8.3lf \u00B1 %5.3lf M ops/s (%7.3lfM ops/prod), ", 187 hits_mean, hits_stddev, hits_mean / env.producer_cnt); 188 printf("latency %8.3lf ns/op\n", 1000.0 / hits_mean * env.producer_cnt); 189} 190 191void local_storage_report_progress(int iter, struct bench_res *res, 192 long delta_ns) 193{ 194 double important_hits_per_sec, hits_per_sec; 195 double delta_sec = delta_ns / 1000000000.0; 196 197 hits_per_sec = res->hits / 1000000.0 / delta_sec; 198 important_hits_per_sec = res->important_hits / 1000000.0 / delta_sec; 199 200 printf("Iter %3d (%7.3lfus): ", iter, (delta_ns - 1000000000) / 1000.0); 201 202 printf("hits %8.3lfM/s ", hits_per_sec); 203 printf("important_hits %8.3lfM/s\n", important_hits_per_sec); 204} 205 206void local_storage_report_final(struct bench_res res[], int res_cnt) 207{ 208 double important_hits_mean = 0.0, important_hits_stddev = 0.0; 209 double hits_mean = 0.0, hits_stddev = 0.0; 210 int i; 211 212 for (i = 0; i < res_cnt; i++) { 213 hits_mean += res[i].hits / 1000000.0 / (0.0 + res_cnt); 214 important_hits_mean += res[i].important_hits / 1000000.0 / (0.0 + res_cnt); 215 } 216 217 if (res_cnt > 1) { 218 for (i = 0; i < res_cnt; i++) { 219 hits_stddev += (hits_mean - res[i].hits / 1000000.0) * 220 (hits_mean - res[i].hits / 1000000.0) / 221 (res_cnt - 1.0); 222 important_hits_stddev += 223 (important_hits_mean - res[i].important_hits / 1000000.0) * 224 (important_hits_mean - res[i].important_hits / 1000000.0) / 225 (res_cnt - 1.0); 226 } 227 228 hits_stddev = sqrt(hits_stddev); 229 important_hits_stddev = sqrt(important_hits_stddev); 230 } 231 printf("Summary: hits throughput %8.3lf \u00B1 %5.3lf M ops/s, ", 232 hits_mean, hits_stddev); 233 printf("hits latency %8.3lf ns/op, ", 1000.0 / hits_mean); 234 printf("important_hits throughput %8.3lf \u00B1 %5.3lf M ops/s\n", 235 important_hits_mean, important_hits_stddev); 236} 237 238const char *argp_program_version = "benchmark"; 239const char *argp_program_bug_address = "<bpf@vger.kernel.org>"; 240const char argp_program_doc[] = 241"benchmark Generic benchmarking framework.\n" 242"\n" 243"This tool runs benchmarks.\n" 244"\n" 245"USAGE: benchmark <bench-name>\n" 246"\n" 247"EXAMPLES:\n" 248" # run 'count-local' benchmark with 1 producer and 1 consumer\n" 249" benchmark count-local\n" 250" # run 'count-local' with 16 producer and 8 consumer thread, pinned to CPUs\n" 251" benchmark -p16 -c8 -a count-local\n"; 252 253enum { 254 ARG_PROD_AFFINITY_SET = 1000, 255 ARG_CONS_AFFINITY_SET = 1001, 256}; 257 258static const struct argp_option opts[] = { 259 { "list", 'l', NULL, 0, "List available benchmarks"}, 260 { "duration", 'd', "SEC", 0, "Duration of benchmark, seconds"}, 261 { "warmup", 'w', "SEC", 0, "Warm-up period, seconds"}, 262 { "producers", 'p', "NUM", 0, "Number of producer threads"}, 263 { "consumers", 'c', "NUM", 0, "Number of consumer threads"}, 264 { "verbose", 'v', NULL, 0, "Verbose debug output"}, 265 { "affinity", 'a', NULL, 0, "Set consumer/producer thread affinity"}, 266 { "quiet", 'q', NULL, 0, "Be more quiet"}, 267 { "prod-affinity", ARG_PROD_AFFINITY_SET, "CPUSET", 0, 268 "Set of CPUs for producer threads; implies --affinity"}, 269 { "cons-affinity", ARG_CONS_AFFINITY_SET, "CPUSET", 0, 270 "Set of CPUs for consumer threads; implies --affinity"}, 271 {}, 272}; 273 274extern struct argp bench_ringbufs_argp; 275extern struct argp bench_bloom_map_argp; 276extern struct argp bench_bpf_loop_argp; 277extern struct argp bench_local_storage_argp; 278extern struct argp bench_local_storage_rcu_tasks_trace_argp; 279extern struct argp bench_strncmp_argp; 280extern struct argp bench_hashmap_lookup_argp; 281extern struct argp bench_local_storage_create_argp; 282extern struct argp bench_htab_mem_argp; 283 284static const struct argp_child bench_parsers[] = { 285 { &bench_ringbufs_argp, 0, "Ring buffers benchmark", 0 }, 286 { &bench_bloom_map_argp, 0, "Bloom filter map benchmark", 0 }, 287 { &bench_bpf_loop_argp, 0, "bpf_loop helper benchmark", 0 }, 288 { &bench_local_storage_argp, 0, "local_storage benchmark", 0 }, 289 { &bench_strncmp_argp, 0, "bpf_strncmp helper benchmark", 0 }, 290 { &bench_local_storage_rcu_tasks_trace_argp, 0, 291 "local_storage RCU Tasks Trace slowdown benchmark", 0 }, 292 { &bench_hashmap_lookup_argp, 0, "Hashmap lookup benchmark", 0 }, 293 { &bench_local_storage_create_argp, 0, "local-storage-create benchmark", 0 }, 294 { &bench_htab_mem_argp, 0, "hash map memory benchmark", 0 }, 295 {}, 296}; 297 298/* Make pos_args global, so that we can run argp_parse twice, if necessary */ 299static int pos_args; 300 301static error_t parse_arg(int key, char *arg, struct argp_state *state) 302{ 303 switch (key) { 304 case 'v': 305 env.verbose = true; 306 break; 307 case 'l': 308 env.list = true; 309 break; 310 case 'd': 311 env.duration_sec = strtol(arg, NULL, 10); 312 if (env.duration_sec <= 0) { 313 fprintf(stderr, "Invalid duration: %s\n", arg); 314 argp_usage(state); 315 } 316 break; 317 case 'w': 318 env.warmup_sec = strtol(arg, NULL, 10); 319 if (env.warmup_sec <= 0) { 320 fprintf(stderr, "Invalid warm-up duration: %s\n", arg); 321 argp_usage(state); 322 } 323 break; 324 case 'p': 325 env.producer_cnt = strtol(arg, NULL, 10); 326 if (env.producer_cnt < 0) { 327 fprintf(stderr, "Invalid producer count: %s\n", arg); 328 argp_usage(state); 329 } 330 break; 331 case 'c': 332 env.consumer_cnt = strtol(arg, NULL, 10); 333 if (env.consumer_cnt < 0) { 334 fprintf(stderr, "Invalid consumer count: %s\n", arg); 335 argp_usage(state); 336 } 337 break; 338 case 'a': 339 env.affinity = true; 340 break; 341 case 'q': 342 env.quiet = true; 343 break; 344 case ARG_PROD_AFFINITY_SET: 345 env.affinity = true; 346 if (parse_num_list(arg, &env.prod_cpus.cpus, 347 &env.prod_cpus.cpus_len)) { 348 fprintf(stderr, "Invalid format of CPU set for producers."); 349 argp_usage(state); 350 } 351 break; 352 case ARG_CONS_AFFINITY_SET: 353 env.affinity = true; 354 if (parse_num_list(arg, &env.cons_cpus.cpus, 355 &env.cons_cpus.cpus_len)) { 356 fprintf(stderr, "Invalid format of CPU set for consumers."); 357 argp_usage(state); 358 } 359 break; 360 case ARGP_KEY_ARG: 361 if (pos_args++) { 362 fprintf(stderr, 363 "Unrecognized positional argument: %s\n", arg); 364 argp_usage(state); 365 } 366 env.bench_name = strdup(arg); 367 break; 368 default: 369 return ARGP_ERR_UNKNOWN; 370 } 371 return 0; 372} 373 374static void parse_cmdline_args_init(int argc, char **argv) 375{ 376 static const struct argp argp = { 377 .options = opts, 378 .parser = parse_arg, 379 .doc = argp_program_doc, 380 .children = bench_parsers, 381 }; 382 if (argp_parse(&argp, argc, argv, 0, NULL, NULL)) 383 exit(1); 384} 385 386static void parse_cmdline_args_final(int argc, char **argv) 387{ 388 struct argp_child bench_parsers[2] = {}; 389 const struct argp argp = { 390 .options = opts, 391 .parser = parse_arg, 392 .doc = argp_program_doc, 393 .children = bench_parsers, 394 }; 395 396 /* Parse arguments the second time with the correct set of parsers */ 397 if (bench->argp) { 398 bench_parsers[0].argp = bench->argp; 399 bench_parsers[0].header = bench->name; 400 pos_args = 0; 401 if (argp_parse(&argp, argc, argv, 0, NULL, NULL)) 402 exit(1); 403 } 404} 405 406static void collect_measurements(long delta_ns); 407 408static __u64 last_time_ns; 409static void sigalarm_handler(int signo) 410{ 411 long new_time_ns = get_time_ns(); 412 long delta_ns = new_time_ns - last_time_ns; 413 414 collect_measurements(delta_ns); 415 416 last_time_ns = new_time_ns; 417} 418 419/* set up periodic 1-second timer */ 420static void setup_timer() 421{ 422 static struct sigaction sigalarm_action = { 423 .sa_handler = sigalarm_handler, 424 }; 425 struct itimerval timer_settings = {}; 426 int err; 427 428 last_time_ns = get_time_ns(); 429 err = sigaction(SIGALRM, &sigalarm_action, NULL); 430 if (err < 0) { 431 fprintf(stderr, "failed to install SIGALRM handler: %d\n", -errno); 432 exit(1); 433 } 434 timer_settings.it_interval.tv_sec = 1; 435 timer_settings.it_value.tv_sec = 1; 436 err = setitimer(ITIMER_REAL, &timer_settings, NULL); 437 if (err < 0) { 438 fprintf(stderr, "failed to arm interval timer: %d\n", -errno); 439 exit(1); 440 } 441} 442 443static void set_thread_affinity(pthread_t thread, int cpu) 444{ 445 cpu_set_t cpuset; 446 int err; 447 448 CPU_ZERO(&cpuset); 449 CPU_SET(cpu, &cpuset); 450 err = pthread_setaffinity_np(thread, sizeof(cpuset), &cpuset); 451 if (err) { 452 fprintf(stderr, "setting affinity to CPU #%d failed: %d\n", 453 cpu, -err); 454 exit(1); 455 } 456} 457 458static int next_cpu(struct cpu_set *cpu_set) 459{ 460 if (cpu_set->cpus) { 461 int i; 462 463 /* find next available CPU */ 464 for (i = cpu_set->next_cpu; i < cpu_set->cpus_len; i++) { 465 if (cpu_set->cpus[i]) { 466 cpu_set->next_cpu = i + 1; 467 return i; 468 } 469 } 470 fprintf(stderr, "Not enough CPUs specified, need CPU #%d or higher.\n", i); 471 exit(1); 472 } 473 474 return cpu_set->next_cpu++ % env.nr_cpus; 475} 476 477static struct bench_state { 478 int res_cnt; 479 struct bench_res *results; 480 pthread_t *consumers; 481 pthread_t *producers; 482} state; 483 484const struct bench *bench = NULL; 485 486extern const struct bench bench_count_global; 487extern const struct bench bench_count_local; 488extern const struct bench bench_rename_base; 489extern const struct bench bench_rename_kprobe; 490extern const struct bench bench_rename_kretprobe; 491extern const struct bench bench_rename_rawtp; 492extern const struct bench bench_rename_fentry; 493extern const struct bench bench_rename_fexit; 494extern const struct bench bench_trig_base; 495extern const struct bench bench_trig_tp; 496extern const struct bench bench_trig_rawtp; 497extern const struct bench bench_trig_kprobe; 498extern const struct bench bench_trig_kretprobe; 499extern const struct bench bench_trig_kprobe_multi; 500extern const struct bench bench_trig_kretprobe_multi; 501extern const struct bench bench_trig_fentry; 502extern const struct bench bench_trig_fexit; 503extern const struct bench bench_trig_fentry_sleep; 504extern const struct bench bench_trig_fmodret; 505extern const struct bench bench_trig_uprobe_base; 506extern const struct bench bench_trig_uprobe_nop; 507extern const struct bench bench_trig_uretprobe_nop; 508extern const struct bench bench_trig_uprobe_push; 509extern const struct bench bench_trig_uretprobe_push; 510extern const struct bench bench_trig_uprobe_ret; 511extern const struct bench bench_trig_uretprobe_ret; 512extern const struct bench bench_rb_libbpf; 513extern const struct bench bench_rb_custom; 514extern const struct bench bench_pb_libbpf; 515extern const struct bench bench_pb_custom; 516extern const struct bench bench_bloom_lookup; 517extern const struct bench bench_bloom_update; 518extern const struct bench bench_bloom_false_positive; 519extern const struct bench bench_hashmap_without_bloom; 520extern const struct bench bench_hashmap_with_bloom; 521extern const struct bench bench_bpf_loop; 522extern const struct bench bench_strncmp_no_helper; 523extern const struct bench bench_strncmp_helper; 524extern const struct bench bench_bpf_hashmap_full_update; 525extern const struct bench bench_local_storage_cache_seq_get; 526extern const struct bench bench_local_storage_cache_interleaved_get; 527extern const struct bench bench_local_storage_cache_hashmap_control; 528extern const struct bench bench_local_storage_tasks_trace; 529extern const struct bench bench_bpf_hashmap_lookup; 530extern const struct bench bench_local_storage_create; 531extern const struct bench bench_htab_mem; 532 533static const struct bench *benchs[] = { 534 &bench_count_global, 535 &bench_count_local, 536 &bench_rename_base, 537 &bench_rename_kprobe, 538 &bench_rename_kretprobe, 539 &bench_rename_rawtp, 540 &bench_rename_fentry, 541 &bench_rename_fexit, 542 &bench_trig_base, 543 &bench_trig_tp, 544 &bench_trig_rawtp, 545 &bench_trig_kprobe, 546 &bench_trig_kretprobe, 547 &bench_trig_kprobe_multi, 548 &bench_trig_kretprobe_multi, 549 &bench_trig_fentry, 550 &bench_trig_fexit, 551 &bench_trig_fentry_sleep, 552 &bench_trig_fmodret, 553 &bench_trig_uprobe_base, 554 &bench_trig_uprobe_nop, 555 &bench_trig_uretprobe_nop, 556 &bench_trig_uprobe_push, 557 &bench_trig_uretprobe_push, 558 &bench_trig_uprobe_ret, 559 &bench_trig_uretprobe_ret, 560 &bench_rb_libbpf, 561 &bench_rb_custom, 562 &bench_pb_libbpf, 563 &bench_pb_custom, 564 &bench_bloom_lookup, 565 &bench_bloom_update, 566 &bench_bloom_false_positive, 567 &bench_hashmap_without_bloom, 568 &bench_hashmap_with_bloom, 569 &bench_bpf_loop, 570 &bench_strncmp_no_helper, 571 &bench_strncmp_helper, 572 &bench_bpf_hashmap_full_update, 573 &bench_local_storage_cache_seq_get, 574 &bench_local_storage_cache_interleaved_get, 575 &bench_local_storage_cache_hashmap_control, 576 &bench_local_storage_tasks_trace, 577 &bench_bpf_hashmap_lookup, 578 &bench_local_storage_create, 579 &bench_htab_mem, 580}; 581 582static void find_benchmark(void) 583{ 584 int i; 585 586 if (!env.bench_name) { 587 fprintf(stderr, "benchmark name is not specified\n"); 588 exit(1); 589 } 590 for (i = 0; i < ARRAY_SIZE(benchs); i++) { 591 if (strcmp(benchs[i]->name, env.bench_name) == 0) { 592 bench = benchs[i]; 593 break; 594 } 595 } 596 if (!bench) { 597 fprintf(stderr, "benchmark '%s' not found\n", env.bench_name); 598 exit(1); 599 } 600} 601 602static void setup_benchmark(void) 603{ 604 int i, err; 605 606 if (!env.quiet) 607 printf("Setting up benchmark '%s'...\n", bench->name); 608 609 state.producers = calloc(env.producer_cnt, sizeof(*state.producers)); 610 state.consumers = calloc(env.consumer_cnt, sizeof(*state.consumers)); 611 state.results = calloc(env.duration_sec + env.warmup_sec + 2, 612 sizeof(*state.results)); 613 if (!state.producers || !state.consumers || !state.results) 614 exit(1); 615 616 if (bench->validate) 617 bench->validate(); 618 if (bench->setup) 619 bench->setup(); 620 621 for (i = 0; i < env.consumer_cnt; i++) { 622 if (!bench->consumer_thread) { 623 fprintf(stderr, "benchmark doesn't support consumers!\n"); 624 exit(1); 625 } 626 err = pthread_create(&state.consumers[i], NULL, 627 bench->consumer_thread, (void *)(long)i); 628 if (err) { 629 fprintf(stderr, "failed to create consumer thread #%d: %d\n", 630 i, -err); 631 exit(1); 632 } 633 if (env.affinity) 634 set_thread_affinity(state.consumers[i], 635 next_cpu(&env.cons_cpus)); 636 } 637 638 /* unless explicit producer CPU list is specified, continue after 639 * last consumer CPU 640 */ 641 if (!env.prod_cpus.cpus) 642 env.prod_cpus.next_cpu = env.cons_cpus.next_cpu; 643 644 for (i = 0; i < env.producer_cnt; i++) { 645 if (!bench->producer_thread) { 646 fprintf(stderr, "benchmark doesn't support producers!\n"); 647 exit(1); 648 } 649 err = pthread_create(&state.producers[i], NULL, 650 bench->producer_thread, (void *)(long)i); 651 if (err) { 652 fprintf(stderr, "failed to create producer thread #%d: %d\n", 653 i, -err); 654 exit(1); 655 } 656 if (env.affinity) 657 set_thread_affinity(state.producers[i], 658 next_cpu(&env.prod_cpus)); 659 } 660 661 if (!env.quiet) 662 printf("Benchmark '%s' started.\n", bench->name); 663} 664 665static pthread_mutex_t bench_done_mtx = PTHREAD_MUTEX_INITIALIZER; 666static pthread_cond_t bench_done = PTHREAD_COND_INITIALIZER; 667 668static void collect_measurements(long delta_ns) { 669 int iter = state.res_cnt++; 670 struct bench_res *res = &state.results[iter]; 671 672 bench->measure(res); 673 674 if (bench->report_progress) 675 bench->report_progress(iter, res, delta_ns); 676 677 if (iter == env.duration_sec + env.warmup_sec) { 678 pthread_mutex_lock(&bench_done_mtx); 679 pthread_cond_signal(&bench_done); 680 pthread_mutex_unlock(&bench_done_mtx); 681 } 682} 683 684int main(int argc, char **argv) 685{ 686 env.nr_cpus = get_nprocs(); 687 parse_cmdline_args_init(argc, argv); 688 689 if (env.list) { 690 int i; 691 692 printf("Available benchmarks:\n"); 693 for (i = 0; i < ARRAY_SIZE(benchs); i++) { 694 printf("- %s\n", benchs[i]->name); 695 } 696 return 0; 697 } 698 699 find_benchmark(); 700 parse_cmdline_args_final(argc, argv); 701 702 setup_benchmark(); 703 704 setup_timer(); 705 706 pthread_mutex_lock(&bench_done_mtx); 707 pthread_cond_wait(&bench_done, &bench_done_mtx); 708 pthread_mutex_unlock(&bench_done_mtx); 709 710 if (bench->report_final) 711 /* skip first sample */ 712 bench->report_final(state.results + env.warmup_sec, 713 state.res_cnt - env.warmup_sec); 714 715 return 0; 716} 717