stat.c revision 4ceb30d4b44957e252a75f7ee4170f36109934c3
1#include <stdio.h> 2#include <string.h> 3#include <sys/time.h> 4#include <sys/types.h> 5#include <sys/stat.h> 6#include <dirent.h> 7#include <libgen.h> 8#include <math.h> 9 10#include "fio.h" 11#include "diskutil.h" 12 13void update_rusage_stat(struct thread_data *td) 14{ 15 struct thread_stat *ts = &td->ts; 16 17 getrusage(RUSAGE_SELF, &ts->ru_end); 18 19 ts->usr_time += mtime_since(&ts->ru_start.ru_utime, 20 &ts->ru_end.ru_utime); 21 ts->sys_time += mtime_since(&ts->ru_start.ru_stime, 22 &ts->ru_end.ru_stime); 23 ts->ctx += ts->ru_end.ru_nvcsw + ts->ru_end.ru_nivcsw 24 - (ts->ru_start.ru_nvcsw + ts->ru_start.ru_nivcsw); 25 ts->minf += ts->ru_end.ru_minflt - ts->ru_start.ru_minflt; 26 ts->majf += ts->ru_end.ru_majflt - ts->ru_start.ru_majflt; 27 28 memcpy(&ts->ru_start, &ts->ru_end, sizeof(ts->ru_end)); 29} 30 31static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max, 32 double *mean, double *dev) 33{ 34 double n = is->samples; 35 36 if (is->samples == 0) 37 return 0; 38 39 *min = is->min_val; 40 *max = is->max_val; 41 42 n = (double) is->samples; 43 *mean = is->mean; 44 45 if (n > 1.0) 46 *dev = sqrt(is->S / (n - 1.0)); 47 else 48 *dev = 0; 49 50 return 1; 51} 52 53static void show_group_stats(struct group_run_stats *rs, int id) 54{ 55 char *p1, *p2, *p3, *p4; 56 const char *ddir_str[] = { " READ", " WRITE" }; 57 int i; 58 59 log_info("\nRun status group %d (all jobs):\n", id); 60 61 for (i = 0; i <= DDIR_WRITE; i++) { 62 const int i2p = is_power_of_2(rs->kb_base); 63 64 if (!rs->max_run[i]) 65 continue; 66 67 p1 = num2str(rs->io_kb[i], 6, rs->kb_base, i2p); 68 p2 = num2str(rs->agg[i], 6, rs->kb_base, i2p); 69 p3 = num2str(rs->min_bw[i], 6, rs->kb_base, i2p); 70 p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p); 71 72 log_info("%s: io=%sB, aggrb=%sB/s, minb=%sB/s, maxb=%sB/s," 73 " mint=%llumsec, maxt=%llumsec\n", ddir_str[i], p1, p2, 74 p3, p4, rs->min_run[i], 75 rs->max_run[i]); 76 77 free(p1); 78 free(p2); 79 free(p3); 80 free(p4); 81 } 82} 83 84#define ts_total_io_u(ts) \ 85 ((ts)->total_io_u[0] + (ts)->total_io_u[1]) 86 87static void stat_calc_dist(unsigned int *map, unsigned long total, 88 double *io_u_dist) 89{ 90 int i; 91 92 /* 93 * Do depth distribution calculations 94 */ 95 for (i = 0; i < FIO_IO_U_MAP_NR; i++) { 96 if (total) { 97 io_u_dist[i] = (double) map[i] / (double) total; 98 io_u_dist[i] *= 100.0; 99 if (io_u_dist[i] < 0.1 && map[i]) 100 io_u_dist[i] = 0.1; 101 } else 102 io_u_dist[i] = 0.0; 103 } 104} 105 106static void stat_calc_lat(struct thread_stat *ts, double *dst, 107 unsigned int *src, int nr) 108{ 109 unsigned long total = ts_total_io_u(ts); 110 int i; 111 112 /* 113 * Do latency distribution calculations 114 */ 115 for (i = 0; i < nr; i++) { 116 if (total) { 117 dst[i] = (double) src[i] / (double) total; 118 dst[i] *= 100.0; 119 if (dst[i] < 0.01 && src[i]) 120 dst[i] = 0.01; 121 } else 122 dst[i] = 0.0; 123 } 124} 125 126static void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat) 127{ 128 stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR); 129} 130 131static void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat) 132{ 133 stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR); 134} 135 136static int usec_to_msec(unsigned long *min, unsigned long *max, double *mean, 137 double *dev) 138{ 139 if (*min > 1000 && *max > 1000 && *mean > 1000.0 && *dev > 1000.0) { 140 *min /= 1000; 141 *max /= 1000; 142 *mean /= 1000.0; 143 *dev /= 1000.0; 144 return 0; 145 } 146 147 return 1; 148} 149 150static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts, 151 int ddir) 152{ 153 const char *ddir_str[] = { "read ", "write" }; 154 unsigned long min, max, runt; 155 unsigned long long bw, iops; 156 double mean, dev; 157 char *io_p, *bw_p, *iops_p; 158 int i2p; 159 160 if (!ts->runtime[ddir]) 161 return; 162 163 i2p = is_power_of_2(rs->kb_base); 164 runt = ts->runtime[ddir]; 165 166 bw = (1000 * ts->io_bytes[ddir]) / runt; 167 io_p = num2str(ts->io_bytes[ddir], 6, 1, i2p); 168 bw_p = num2str(bw, 6, 1, i2p); 169 170 iops = (1000 * ts->total_io_u[ddir]) / runt; 171 iops_p = num2str(iops, 6, 1, 0); 172 173 log_info(" %s: io=%sB, bw=%sB/s, iops=%s, runt=%6lumsec\n", 174 ddir_str[ddir], io_p, bw_p, iops_p, 175 ts->runtime[ddir]); 176 177 free(io_p); 178 free(bw_p); 179 free(iops_p); 180 181 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) { 182 const char *base = "(usec)"; 183 char *minp, *maxp; 184 185 if (!usec_to_msec(&min, &max, &mean, &dev)) 186 base = "(msec)"; 187 188 minp = num2str(min, 6, 1, 0); 189 maxp = num2str(max, 6, 1, 0); 190 191 log_info(" slat %s: min=%s, max=%s, avg=%5.02f," 192 " stdev=%5.02f\n", base, minp, maxp, mean, dev); 193 194 free(minp); 195 free(maxp); 196 } 197 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) { 198 const char *base = "(usec)"; 199 char *minp, *maxp; 200 201 if (!usec_to_msec(&min, &max, &mean, &dev)) 202 base = "(msec)"; 203 204 minp = num2str(min, 6, 1, 0); 205 maxp = num2str(max, 6, 1, 0); 206 207 log_info(" clat %s: min=%s, max=%s, avg=%5.02f," 208 " stdev=%5.02f\n", base, minp, maxp, mean, dev); 209 210 free(minp); 211 free(maxp); 212 } 213 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) { 214 double p_of_agg; 215 216 p_of_agg = mean * 100 / (double) rs->agg[ddir]; 217 log_info(" bw (KB/s) : min=%5lu, max=%5lu, per=%3.2f%%," 218 " avg=%5.02f, stdev=%5.02f\n", min, max, p_of_agg, 219 mean, dev); 220 } 221} 222 223static void show_lat(double *io_u_lat, int nr, const char **ranges, 224 const char *msg) 225{ 226 int new_line = 1, i, line = 0; 227 228 for (i = 0; i < nr; i++) { 229 if (io_u_lat[i] <= 0.0) 230 continue; 231 if (new_line) { 232 if (line) 233 log_info("\n"); 234 log_info(" lat (%s): ", msg); 235 new_line = 0; 236 line = 0; 237 } 238 if (line) 239 log_info(", "); 240 log_info("%s%3.2f%%", ranges[i], io_u_lat[i]); 241 line++; 242 if (line == 5) 243 new_line = 1; 244 } 245} 246 247static void show_lat_u(double *io_u_lat_u) 248{ 249 const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=", 250 "250=", "500=", "750=", "1000=", }; 251 252 show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec"); 253} 254 255static void show_lat_m(double *io_u_lat_m) 256{ 257 const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=", 258 "250=", "500=", "750=", "1000=", "2000=", 259 ">=2000=", }; 260 261 show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec"); 262} 263 264static void show_latencies(double *io_u_lat_u, double *io_u_lat_m) 265{ 266 show_lat_u(io_u_lat_u); 267 log_info("\n"); 268 show_lat_m(io_u_lat_m); 269 log_info("\n"); 270} 271 272static void show_thread_status(struct thread_stat *ts, 273 struct group_run_stats *rs) 274{ 275 double usr_cpu, sys_cpu; 276 unsigned long runtime; 277 double io_u_dist[FIO_IO_U_MAP_NR]; 278 double io_u_lat_u[FIO_IO_U_LAT_U_NR]; 279 double io_u_lat_m[FIO_IO_U_LAT_M_NR]; 280 281 if (!(ts->io_bytes[0] + ts->io_bytes[1]) && 282 !(ts->total_io_u[0] + ts->total_io_u[1])) 283 return; 284 285 if (!ts->error) { 286 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d\n", 287 ts->name, ts->groupid, ts->members, 288 ts->error, (int) ts->pid); 289 } else { 290 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d\n", 291 ts->name, ts->groupid, ts->members, 292 ts->error, ts->verror, (int) ts->pid); 293 } 294 295 if (ts->description) 296 log_info(" Description : [%s]\n", ts->description); 297 298 if (ts->io_bytes[DDIR_READ]) 299 show_ddir_status(rs, ts, DDIR_READ); 300 if (ts->io_bytes[DDIR_WRITE]) 301 show_ddir_status(rs, ts, DDIR_WRITE); 302 303 runtime = ts->total_run_time; 304 if (runtime) { 305 double runt = (double) runtime; 306 307 usr_cpu = (double) ts->usr_time * 100 / runt; 308 sys_cpu = (double) ts->sys_time * 100 / runt; 309 } else { 310 usr_cpu = 0; 311 sys_cpu = 0; 312 } 313 314 log_info(" cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu, majf=%lu," 315 " minf=%lu\n", usr_cpu, sys_cpu, ts->ctx, ts->majf, ts->minf); 316 317 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist); 318 log_info(" IO depths : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%," 319 " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], 320 io_u_dist[1], io_u_dist[2], 321 io_u_dist[3], io_u_dist[4], 322 io_u_dist[5], io_u_dist[6]); 323 324 stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist); 325 log_info(" submit : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%," 326 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], 327 io_u_dist[1], io_u_dist[2], 328 io_u_dist[3], io_u_dist[4], 329 io_u_dist[5], io_u_dist[6]); 330 stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist); 331 log_info(" complete : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%," 332 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], 333 io_u_dist[1], io_u_dist[2], 334 io_u_dist[3], io_u_dist[4], 335 io_u_dist[5], io_u_dist[6]); 336 log_info(" issued r/w: total=%lu/%lu, short=%lu/%lu\n", 337 ts->total_io_u[0], ts->total_io_u[1], 338 ts->short_io_u[0], ts->short_io_u[1]); 339 stat_calc_lat_u(ts, io_u_lat_u); 340 stat_calc_lat_m(ts, io_u_lat_m); 341 show_latencies(io_u_lat_u, io_u_lat_m); 342 if (ts->continue_on_error) { 343 log_info(" errors : total=%lu, first_error=%d/<%s>\n", 344 ts->total_err_count, 345 ts->first_error, 346 strerror(ts->first_error)); 347 } 348} 349 350static void show_ddir_status_terse(struct thread_stat *ts, 351 struct group_run_stats *rs, int ddir) 352{ 353 unsigned long min, max; 354 unsigned long long bw; 355 double mean, dev; 356 357 bw = 0; 358 if (ts->runtime[ddir]) 359 bw = ts->io_bytes[ddir] / ts->runtime[ddir]; 360 361 log_info(";%llu;%llu;%lu", ts->io_bytes[ddir] >> 10, bw, 362 ts->runtime[ddir]); 363 364 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) 365 log_info(";%lu;%lu;%f;%f", min, max, mean, dev); 366 else 367 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0); 368 369 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) 370 log_info(";%lu;%lu;%f;%f", min, max, mean, dev); 371 else 372 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0); 373 374 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) { 375 double p_of_agg; 376 377 p_of_agg = mean * 100 / (double) rs->agg[ddir]; 378 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev); 379 } else 380 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0); 381} 382 383 384static void show_thread_status_terse(struct thread_stat *ts, 385 struct group_run_stats *rs) 386{ 387 double io_u_dist[FIO_IO_U_MAP_NR]; 388 double io_u_lat_u[FIO_IO_U_LAT_U_NR]; 389 double io_u_lat_m[FIO_IO_U_LAT_M_NR]; 390 double usr_cpu, sys_cpu; 391 int i; 392 393 log_info("%s;%d;%d", ts->name, ts->groupid, ts->error); 394 395 show_ddir_status_terse(ts, rs, 0); 396 show_ddir_status_terse(ts, rs, 1); 397 398 if (ts->total_run_time) { 399 double runt = (double) ts->total_run_time; 400 401 usr_cpu = (double) ts->usr_time * 100 / runt; 402 sys_cpu = (double) ts->sys_time * 100 / runt; 403 } else { 404 usr_cpu = 0; 405 sys_cpu = 0; 406 } 407 408 log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf, 409 ts->minf); 410 411 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist); 412 stat_calc_lat_u(ts, io_u_lat_u); 413 stat_calc_lat_m(ts, io_u_lat_m); 414 415 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%", 416 io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3], 417 io_u_dist[4], io_u_dist[5], io_u_dist[6]); 418 419 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) 420 log_info(";%3.2f%%", io_u_lat_u[i]); 421 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++) 422 log_info(";%3.2f%%", io_u_lat_m[i]); 423 if (ts->continue_on_error) 424 log_info(";%lu;%d", ts->total_err_count, ts->first_error); 425 log_info("\n"); 426 427 if (ts->description) 428 log_info(";%s", ts->description); 429 430 log_info("\n"); 431} 432 433static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr) 434{ 435 double mean, S; 436 437 dst->min_val = min(dst->min_val, src->min_val); 438 dst->max_val = max(dst->max_val, src->max_val); 439 dst->samples += src->samples; 440 441 /* 442 * Needs a new method for calculating stddev, we cannot just 443 * average them we do below for nr > 1 444 */ 445 if (nr == 1) { 446 mean = src->mean; 447 S = src->S; 448 } else { 449 mean = ((src->mean * (double) (nr - 1)) 450 + dst->mean) / ((double) nr); 451 S = ((src->S * (double) (nr - 1)) + dst->S) / ((double) nr); 452 } 453 454 dst->mean = mean; 455 dst->S = S; 456} 457 458void show_run_stats(void) 459{ 460 struct group_run_stats *runstats, *rs; 461 struct thread_data *td; 462 struct thread_stat *threadstats, *ts; 463 int i, j, k, l, nr_ts, last_ts, idx; 464 int kb_base_warned = 0; 465 466 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1)); 467 468 for (i = 0; i < groupid + 1; i++) { 469 rs = &runstats[i]; 470 471 memset(rs, 0, sizeof(*rs)); 472 rs->min_bw[0] = rs->min_run[0] = ~0UL; 473 rs->min_bw[1] = rs->min_run[1] = ~0UL; 474 } 475 476 /* 477 * find out how many threads stats we need. if group reporting isn't 478 * enabled, it's one-per-td. 479 */ 480 nr_ts = 0; 481 last_ts = -1; 482 for_each_td(td, i) { 483 if (!td->o.group_reporting) { 484 nr_ts++; 485 continue; 486 } 487 if (last_ts == td->groupid) 488 continue; 489 490 last_ts = td->groupid; 491 nr_ts++; 492 } 493 494 threadstats = malloc(nr_ts * sizeof(struct thread_stat)); 495 496 for (i = 0; i < nr_ts; i++) { 497 ts = &threadstats[i]; 498 499 memset(ts, 0, sizeof(*ts)); 500 for (j = 0; j <= DDIR_WRITE; j++) { 501 ts->clat_stat[j].min_val = -1UL; 502 ts->slat_stat[j].min_val = -1UL; 503 ts->bw_stat[j].min_val = -1UL; 504 } 505 ts->groupid = -1; 506 } 507 508 j = 0; 509 last_ts = -1; 510 idx = 0; 511 for_each_td(td, i) { 512 if (idx && (!td->o.group_reporting || 513 (td->o.group_reporting && last_ts != td->groupid))) { 514 idx = 0; 515 j++; 516 } 517 518 last_ts = td->groupid; 519 520 ts = &threadstats[j]; 521 522 idx++; 523 ts->members++; 524 525 if (ts->groupid == -1) { 526 /* 527 * These are per-group shared already 528 */ 529 ts->name = td->o.name; 530 ts->description = td->o.description; 531 ts->groupid = td->groupid; 532 533 /* 534 * first pid in group, not very useful... 535 */ 536 ts->pid = td->pid; 537 538 ts->kb_base = td->o.kb_base; 539 } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) { 540 log_info("fio: kb_base differs for jobs in group, using" 541 " %u as the base\n", ts->kb_base); 542 kb_base_warned = 1; 543 } 544 545 ts->continue_on_error = td->o.continue_on_error; 546 ts->total_err_count += td->total_err_count; 547 ts->first_error = td->first_error; 548 if (!ts->error) { 549 if (!td->error && td->o.continue_on_error && 550 td->first_error) { 551 ts->error = td->first_error; 552 ts->verror = td->verror; 553 } else if (td->error) { 554 ts->error = td->error; 555 ts->verror = td->verror; 556 } 557 } 558 559 for (l = 0; l <= DDIR_WRITE; l++) { 560 sum_stat(&ts->clat_stat[l], &td->ts.clat_stat[l], idx); 561 sum_stat(&ts->slat_stat[l], &td->ts.slat_stat[l], idx); 562 sum_stat(&ts->bw_stat[l], &td->ts.bw_stat[l], idx); 563 564 ts->stat_io_bytes[l] += td->ts.stat_io_bytes[l]; 565 ts->io_bytes[l] += td->ts.io_bytes[l]; 566 567 if (ts->runtime[l] < td->ts.runtime[l]) 568 ts->runtime[l] = td->ts.runtime[l]; 569 } 570 571 ts->usr_time += td->ts.usr_time; 572 ts->sys_time += td->ts.sys_time; 573 ts->ctx += td->ts.ctx; 574 ts->majf += td->ts.majf; 575 ts->minf += td->ts.minf; 576 577 for (k = 0; k < FIO_IO_U_MAP_NR; k++) 578 ts->io_u_map[k] += td->ts.io_u_map[k]; 579 for (k = 0; k < FIO_IO_U_MAP_NR; k++) 580 ts->io_u_submit[k] += td->ts.io_u_submit[k]; 581 for (k = 0; k < FIO_IO_U_MAP_NR; k++) 582 ts->io_u_complete[k] += td->ts.io_u_complete[k]; 583 for (k = 0; k < FIO_IO_U_LAT_U_NR; k++) 584 ts->io_u_lat_u[k] += td->ts.io_u_lat_u[k]; 585 for (k = 0; k < FIO_IO_U_LAT_M_NR; k++) 586 ts->io_u_lat_m[k] += td->ts.io_u_lat_m[k]; 587 588 589 for (k = 0; k <= DDIR_WRITE; k++) { 590 ts->total_io_u[k] += td->ts.total_io_u[k]; 591 ts->short_io_u[k] += td->ts.short_io_u[k]; 592 } 593 594 ts->total_run_time += td->ts.total_run_time; 595 ts->total_submit += td->ts.total_submit; 596 ts->total_complete += td->ts.total_complete; 597 } 598 599 for (i = 0; i < nr_ts; i++) { 600 unsigned long long bw; 601 602 ts = &threadstats[i]; 603 rs = &runstats[ts->groupid]; 604 rs->kb_base = ts->kb_base; 605 606 for (j = 0; j <= DDIR_WRITE; j++) { 607 if (!ts->runtime[j]) 608 continue; 609 if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j]) 610 rs->min_run[j] = ts->runtime[j]; 611 if (ts->runtime[j] > rs->max_run[j]) 612 rs->max_run[j] = ts->runtime[j]; 613 614 bw = 0; 615 if (ts->runtime[j]) { 616 unsigned long runt; 617 618 runt = ts->runtime[j]; 619 bw = ts->io_bytes[j] / runt; 620 } 621 if (bw < rs->min_bw[j]) 622 rs->min_bw[j] = bw; 623 if (bw > rs->max_bw[j]) 624 rs->max_bw[j] = bw; 625 626 rs->io_kb[j] += ts->io_bytes[j] / rs->kb_base; 627 } 628 } 629 630 for (i = 0; i < groupid + 1; i++) { 631 unsigned long max_run[2]; 632 633 rs = &runstats[i]; 634 max_run[0] = rs->max_run[0]; 635 max_run[1] = rs->max_run[1]; 636 637 if (rs->max_run[0]) 638 rs->agg[0] = (rs->io_kb[0] * 1000) / max_run[0]; 639 if (rs->max_run[1]) 640 rs->agg[1] = (rs->io_kb[1] * 1000) / max_run[1]; 641 } 642 643 /* 644 * don't overwrite last signal output 645 */ 646 if (!terse_output) 647 log_info("\n"); 648 649 for (i = 0; i < nr_ts; i++) { 650 ts = &threadstats[i]; 651 rs = &runstats[ts->groupid]; 652 653 if (terse_output) 654 show_thread_status_terse(ts, rs); 655 else 656 show_thread_status(ts, rs); 657 } 658 659 if (!terse_output) { 660 for (i = 0; i < groupid + 1; i++) 661 show_group_stats(&runstats[i], i); 662 663 show_disk_util(); 664 } 665 666 free(runstats); 667 free(threadstats); 668} 669 670static inline void add_stat_sample(struct io_stat *is, unsigned long data) 671{ 672 double val = data; 673 double delta; 674 675 if (data > is->max_val) 676 is->max_val = data; 677 if (data < is->min_val) 678 is->min_val = data; 679 680 delta = val - is->mean; 681 if (delta) { 682 is->mean += delta / (is->samples + 1.0); 683 is->S += delta * (val - is->mean); 684 } 685 686 is->samples++; 687} 688 689static void __add_log_sample(struct io_log *iolog, unsigned long val, 690 enum fio_ddir ddir, unsigned int bs, 691 unsigned long time) 692{ 693 const int nr_samples = iolog->nr_samples; 694 695 if (iolog->nr_samples == iolog->max_samples) { 696 int new_size = sizeof(struct io_sample) * iolog->max_samples*2; 697 698 iolog->log = realloc(iolog->log, new_size); 699 iolog->max_samples <<= 1; 700 } 701 702 iolog->log[nr_samples].val = val; 703 iolog->log[nr_samples].time = time; 704 iolog->log[nr_samples].ddir = ddir; 705 iolog->log[nr_samples].bs = bs; 706 iolog->nr_samples++; 707} 708 709static void add_log_sample(struct thread_data *td, struct io_log *iolog, 710 unsigned long val, enum fio_ddir ddir, 711 unsigned int bs) 712{ 713 __add_log_sample(iolog, val, ddir, bs, mtime_since_now(&td->epoch)); 714} 715 716void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs) 717{ 718 struct io_log *iolog = agg_io_log[ddir]; 719 720 __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis()); 721} 722 723void add_clat_sample(struct thread_data *td, enum fio_ddir ddir, 724 unsigned long usec, unsigned int bs) 725{ 726 struct thread_stat *ts = &td->ts; 727 728 add_stat_sample(&ts->clat_stat[ddir], usec); 729 730 if (ts->clat_log) 731 add_log_sample(td, ts->clat_log, usec, ddir, bs); 732} 733 734void add_slat_sample(struct thread_data *td, enum fio_ddir ddir, 735 unsigned long usec, unsigned int bs) 736{ 737 struct thread_stat *ts = &td->ts; 738 739 add_stat_sample(&ts->slat_stat[ddir], usec); 740 741 if (ts->slat_log) 742 add_log_sample(td, ts->slat_log, usec, ddir, bs); 743} 744 745void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs, 746 struct timeval *t) 747{ 748 struct thread_stat *ts = &td->ts; 749 unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t); 750 unsigned long rate; 751 752 if (spent < td->o.bw_avg_time) 753 return; 754 755 rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) * 756 1000 / spent / 1024; 757 add_stat_sample(&ts->bw_stat[ddir], rate); 758 759 if (ts->bw_log) 760 add_log_sample(td, ts->bw_log, rate, ddir, bs); 761 762 fio_gettime(&ts->stat_sample_time[ddir], NULL); 763 ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir]; 764} 765