stat.c revision 2e33101f218a1603eeecca969f5b7a0e98696a01
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#include "lib/ieee754.h" 13 14void update_rusage_stat(struct thread_data *td) 15{ 16 struct thread_stat *ts = &td->ts; 17 18 getrusage(RUSAGE_SELF, &td->ru_end); 19 20 ts->usr_time += mtime_since(&td->ru_start.ru_utime, 21 &td->ru_end.ru_utime); 22 ts->sys_time += mtime_since(&td->ru_start.ru_stime, 23 &td->ru_end.ru_stime); 24 ts->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw 25 - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw); 26 ts->minf += td->ru_end.ru_minflt - td->ru_start.ru_minflt; 27 ts->majf += td->ru_end.ru_majflt - td->ru_start.ru_majflt; 28 29 memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end)); 30} 31 32/* 33 * Given a latency, return the index of the corresponding bucket in 34 * the structure tracking percentiles. 35 * 36 * (1) find the group (and error bits) that the value (latency) 37 * belongs to by looking at its MSB. (2) find the bucket number in the 38 * group by looking at the index bits. 39 * 40 */ 41static unsigned int plat_val_to_idx(unsigned int val) 42{ 43 unsigned int msb, error_bits, base, offset, idx; 44 45 /* Find MSB starting from bit 0 */ 46 if (val == 0) 47 msb = 0; 48 else 49 msb = (sizeof(val)*8) - __builtin_clz(val) - 1; 50 51 /* 52 * MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use 53 * all bits of the sample as index 54 */ 55 if (msb <= FIO_IO_U_PLAT_BITS) 56 return val; 57 58 /* Compute the number of error bits to discard*/ 59 error_bits = msb - FIO_IO_U_PLAT_BITS; 60 61 /* Compute the number of buckets before the group */ 62 base = (error_bits + 1) << FIO_IO_U_PLAT_BITS; 63 64 /* 65 * Discard the error bits and apply the mask to find the 66 * index for the buckets in the group 67 */ 68 offset = (FIO_IO_U_PLAT_VAL - 1) & (val >> error_bits); 69 70 /* Make sure the index does not exceed (array size - 1) */ 71 idx = (base + offset) < (FIO_IO_U_PLAT_NR - 1)? 72 (base + offset) : (FIO_IO_U_PLAT_NR - 1); 73 74 return idx; 75} 76 77/* 78 * Convert the given index of the bucket array to the value 79 * represented by the bucket 80 */ 81static unsigned int plat_idx_to_val(unsigned int idx) 82{ 83 unsigned int error_bits, k, base; 84 85 assert(idx < FIO_IO_U_PLAT_NR); 86 87 /* MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use 88 * all bits of the sample as index */ 89 if (idx < (FIO_IO_U_PLAT_VAL << 1) ) 90 return idx; 91 92 /* Find the group and compute the minimum value of that group */ 93 error_bits = (idx >> FIO_IO_U_PLAT_BITS) -1; 94 base = 1 << (error_bits + FIO_IO_U_PLAT_BITS); 95 96 /* Find its bucket number of the group */ 97 k = idx % FIO_IO_U_PLAT_VAL; 98 99 /* Return the mean of the range of the bucket */ 100 return base + ((k + 0.5) * (1 << error_bits)); 101} 102 103static int double_cmp(const void *a, const void *b) 104{ 105 const fio_fp64_t fa = *(const fio_fp64_t *) a; 106 const fio_fp64_t fb = *(const fio_fp64_t *) b; 107 int cmp = 0; 108 109 if (fa.u.f > fb.u.f) 110 cmp = 1; 111 else if (fa.u.f < fb.u.f) 112 cmp = -1; 113 114 return cmp; 115} 116 117unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr, 118 fio_fp64_t *plist, unsigned int **output, 119 unsigned int *maxv, unsigned int *minv) 120{ 121 unsigned long sum = 0; 122 unsigned int len, i, j = 0; 123 unsigned int oval_len = 0; 124 unsigned int *ovals = NULL; 125 int is_last; 126 127 *minv = -1U; 128 *maxv = 0; 129 130 len = 0; 131 while (len < FIO_IO_U_LIST_MAX_LEN && plist[len].u.f != 0.0) 132 len++; 133 134 if (!len) 135 return 0; 136 137 /* 138 * Sort the percentile list. Note that it may already be sorted if 139 * we are using the default values, but since it's a short list this 140 * isn't a worry. Also note that this does not work for NaN values. 141 */ 142 if (len > 1) 143 qsort((void*)plist, len, sizeof(plist[0]), double_cmp); 144 145 /* 146 * Calculate bucket values, note down max and min values 147 */ 148 is_last = 0; 149 for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) { 150 sum += io_u_plat[i]; 151 while (sum >= (plist[j].u.f / 100.0 * nr)) { 152 assert(plist[j].u.f <= 100.0); 153 154 if (j == oval_len) { 155 oval_len += 100; 156 ovals = realloc(ovals, oval_len * sizeof(unsigned int)); 157 } 158 159 ovals[j] = plat_idx_to_val(i); 160 if (ovals[j] < *minv) 161 *minv = ovals[j]; 162 if (ovals[j] > *maxv) 163 *maxv = ovals[j]; 164 165 is_last = (j == len - 1); 166 if (is_last) 167 break; 168 169 j++; 170 } 171 } 172 173 *output = ovals; 174 return len; 175} 176 177/* 178 * Find and display the p-th percentile of clat 179 */ 180static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr, 181 fio_fp64_t *plist) 182{ 183 unsigned int len, j = 0, minv, maxv; 184 unsigned int *ovals; 185 int is_last, scale_down; 186 187 len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv); 188 if (!len) 189 goto out; 190 191 /* 192 * We default to usecs, but if the value range is such that we 193 * should scale down to msecs, do that. 194 */ 195 if (minv > 2000 && maxv > 99999) { 196 scale_down = 1; 197 log_info(" clat percentiles (msec):\n |"); 198 } else { 199 scale_down = 0; 200 log_info(" clat percentiles (usec):\n |"); 201 } 202 203 for (j = 0; j < len; j++) { 204 char fbuf[8]; 205 206 /* for formatting */ 207 if (j != 0 && (j % 4) == 0) 208 log_info(" |"); 209 210 /* end of the list */ 211 is_last = (j == len - 1); 212 213 if (plist[j].u.f < 10.0) 214 sprintf(fbuf, " %2.2f", plist[j].u.f); 215 else 216 sprintf(fbuf, "%2.2f", plist[j].u.f); 217 218 if (scale_down) 219 ovals[j] = (ovals[j] + 999) / 1000; 220 221 log_info(" %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ','); 222 223 if (is_last) 224 break; 225 226 if (j % 4 == 3) /* for formatting */ 227 log_info("\n"); 228 } 229 230out: 231 if (ovals) 232 free(ovals); 233} 234 235int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max, 236 double *mean, double *dev) 237{ 238 double n = is->samples; 239 240 if (is->samples == 0) 241 return 0; 242 243 *min = is->min_val; 244 *max = is->max_val; 245 246 n = (double) is->samples; 247 *mean = is->mean.u.f; 248 249 if (n > 1.0) 250 *dev = sqrt(is->S.u.f / (n - 1.0)); 251 else 252 *dev = 0; 253 254 return 1; 255} 256 257void show_group_stats(struct group_run_stats *rs) 258{ 259 char *p1, *p2, *p3, *p4; 260 const char *ddir_str[] = { " READ", " WRITE" }; 261 int i; 262 263 log_info("\nRun status group %d (all jobs):\n", rs->groupid); 264 265 for (i = 0; i <= DDIR_WRITE; i++) { 266 const int i2p = is_power_of_2(rs->kb_base); 267 268 if (!rs->max_run[i]) 269 continue; 270 271 p1 = num2str(rs->io_kb[i], 6, rs->kb_base, i2p); 272 p2 = num2str(rs->agg[i], 6, rs->kb_base, i2p); 273 p3 = num2str(rs->min_bw[i], 6, rs->kb_base, i2p); 274 p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p); 275 276 log_info("%s: io=%sB, aggrb=%sB/s, minb=%sB/s, maxb=%sB/s," 277 " mint=%llumsec, maxt=%llumsec\n", ddir_str[i], p1, p2, 278 p3, p4, rs->min_run[i], 279 rs->max_run[i]); 280 281 free(p1); 282 free(p2); 283 free(p3); 284 free(p4); 285 } 286} 287 288void stat_calc_dist(unsigned int *map, unsigned long total, double *io_u_dist) 289{ 290 int i; 291 292 /* 293 * Do depth distribution calculations 294 */ 295 for (i = 0; i < FIO_IO_U_MAP_NR; i++) { 296 if (total) { 297 io_u_dist[i] = (double) map[i] / (double) total; 298 io_u_dist[i] *= 100.0; 299 if (io_u_dist[i] < 0.1 && map[i]) 300 io_u_dist[i] = 0.1; 301 } else 302 io_u_dist[i] = 0.0; 303 } 304} 305 306static void stat_calc_lat(struct thread_stat *ts, double *dst, 307 unsigned int *src, int nr) 308{ 309 unsigned long total = ts_total_io_u(ts); 310 int i; 311 312 /* 313 * Do latency distribution calculations 314 */ 315 for (i = 0; i < nr; i++) { 316 if (total) { 317 dst[i] = (double) src[i] / (double) total; 318 dst[i] *= 100.0; 319 if (dst[i] < 0.01 && src[i]) 320 dst[i] = 0.01; 321 } else 322 dst[i] = 0.0; 323 } 324} 325 326void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat) 327{ 328 stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR); 329} 330 331void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat) 332{ 333 stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR); 334} 335 336static void display_lat(const char *name, unsigned long min, unsigned long max, 337 double mean, double dev) 338{ 339 const char *base = "(usec)"; 340 char *minp, *maxp; 341 342 if (!usec_to_msec(&min, &max, &mean, &dev)) 343 base = "(msec)"; 344 345 minp = num2str(min, 6, 1, 0); 346 maxp = num2str(max, 6, 1, 0); 347 348 log_info(" %s %s: min=%s, max=%s, avg=%5.02f," 349 " stdev=%5.02f\n", name, base, minp, maxp, mean, dev); 350 351 free(minp); 352 free(maxp); 353} 354 355static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts, 356 int ddir) 357{ 358 const char *ddir_str[] = { "read ", "write" }; 359 unsigned long min, max, runt; 360 unsigned long long bw, iops; 361 double mean, dev; 362 char *io_p, *bw_p, *iops_p; 363 int i2p; 364 365 assert(ddir_rw(ddir)); 366 367 if (!ts->runtime[ddir]) 368 return; 369 370 i2p = is_power_of_2(rs->kb_base); 371 runt = ts->runtime[ddir]; 372 373 bw = (1000 * ts->io_bytes[ddir]) / runt; 374 io_p = num2str(ts->io_bytes[ddir], 6, 1, i2p); 375 bw_p = num2str(bw, 6, 1, i2p); 376 377 iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt; 378 iops_p = num2str(iops, 6, 1, 0); 379 380 log_info(" %s: io=%sB, bw=%sB/s, iops=%s, runt=%6llumsec\n", 381 ddir_str[ddir], io_p, bw_p, iops_p, 382 ts->runtime[ddir]); 383 384 free(io_p); 385 free(bw_p); 386 free(iops_p); 387 388 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) 389 display_lat("slat", min, max, mean, dev); 390 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) 391 display_lat("clat", min, max, mean, dev); 392 if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) 393 display_lat(" lat", min, max, mean, dev); 394 395 if (ts->clat_percentiles) { 396 show_clat_percentiles(ts->io_u_plat[ddir], 397 ts->clat_stat[ddir].samples, 398 ts->percentile_list); 399 } 400 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) { 401 double p_of_agg = 100.0; 402 const char *bw_str = "KB"; 403 404 if (rs->agg[ddir]) { 405 p_of_agg = mean * 100 / (double) rs->agg[ddir]; 406 if (p_of_agg > 100.0) 407 p_of_agg = 100.0; 408 } 409 410 if (mean > 999999.9) { 411 min /= 1000.0; 412 max /= 1000.0; 413 mean /= 1000.0; 414 dev /= 1000.0; 415 bw_str = "MB"; 416 } 417 418 log_info(" bw (%s/s) : min=%5lu, max=%5lu, per=%3.2f%%," 419 " avg=%5.02f, stdev=%5.02f\n", bw_str, min, max, 420 p_of_agg, mean, dev); 421 } 422} 423 424static int show_lat(double *io_u_lat, int nr, const char **ranges, 425 const char *msg) 426{ 427 int new_line = 1, i, line = 0, shown = 0; 428 429 for (i = 0; i < nr; i++) { 430 if (io_u_lat[i] <= 0.0) 431 continue; 432 shown = 1; 433 if (new_line) { 434 if (line) 435 log_info("\n"); 436 log_info(" lat (%s) : ", msg); 437 new_line = 0; 438 line = 0; 439 } 440 if (line) 441 log_info(", "); 442 log_info("%s%3.2f%%", ranges[i], io_u_lat[i]); 443 line++; 444 if (line == 5) 445 new_line = 1; 446 } 447 448 if (shown) 449 log_info("\n"); 450 451 return shown; 452} 453 454static void show_lat_u(double *io_u_lat_u) 455{ 456 const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=", 457 "250=", "500=", "750=", "1000=", }; 458 459 show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec"); 460} 461 462static void show_lat_m(double *io_u_lat_m) 463{ 464 const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=", 465 "250=", "500=", "750=", "1000=", "2000=", 466 ">=2000=", }; 467 468 show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec"); 469} 470 471static void show_latencies(struct thread_stat *ts) 472{ 473 double io_u_lat_u[FIO_IO_U_LAT_U_NR]; 474 double io_u_lat_m[FIO_IO_U_LAT_M_NR]; 475 476 stat_calc_lat_u(ts, io_u_lat_u); 477 stat_calc_lat_m(ts, io_u_lat_m); 478 479 show_lat_u(io_u_lat_u); 480 show_lat_m(io_u_lat_m); 481} 482 483void show_thread_status(struct thread_stat *ts, struct group_run_stats *rs) 484{ 485 double usr_cpu, sys_cpu; 486 unsigned long runtime; 487 double io_u_dist[FIO_IO_U_MAP_NR]; 488 489 if (!(ts->io_bytes[0] + ts->io_bytes[1]) && 490 !(ts->total_io_u[0] + ts->total_io_u[1])) 491 return; 492 493 if (!ts->error) { 494 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d\n", 495 ts->name, ts->groupid, ts->members, 496 ts->error, (int) ts->pid); 497 } else { 498 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d\n", 499 ts->name, ts->groupid, ts->members, 500 ts->error, ts->verror, (int) ts->pid); 501 } 502 503 if (strlen(ts->description)) 504 log_info(" Description : [%s]\n", ts->description); 505 506 if (ts->io_bytes[DDIR_READ]) 507 show_ddir_status(rs, ts, DDIR_READ); 508 if (ts->io_bytes[DDIR_WRITE]) 509 show_ddir_status(rs, ts, DDIR_WRITE); 510 511 show_latencies(ts); 512 513 runtime = ts->total_run_time; 514 if (runtime) { 515 double runt = (double) runtime; 516 517 usr_cpu = (double) ts->usr_time * 100 / runt; 518 sys_cpu = (double) ts->sys_time * 100 / runt; 519 } else { 520 usr_cpu = 0; 521 sys_cpu = 0; 522 } 523 524 log_info(" cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu, majf=%lu," 525 " minf=%lu\n", usr_cpu, sys_cpu, ts->ctx, ts->majf, ts->minf); 526 527 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist); 528 log_info(" IO depths : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%," 529 " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], 530 io_u_dist[1], io_u_dist[2], 531 io_u_dist[3], io_u_dist[4], 532 io_u_dist[5], io_u_dist[6]); 533 534 stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist); 535 log_info(" submit : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%," 536 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], 537 io_u_dist[1], io_u_dist[2], 538 io_u_dist[3], io_u_dist[4], 539 io_u_dist[5], io_u_dist[6]); 540 stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist); 541 log_info(" complete : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%," 542 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], 543 io_u_dist[1], io_u_dist[2], 544 io_u_dist[3], io_u_dist[4], 545 io_u_dist[5], io_u_dist[6]); 546 log_info(" issued : total=r=%lu/w=%lu/d=%lu," 547 " short=r=%lu/w=%lu/d=%lu\n", 548 ts->total_io_u[0], ts->total_io_u[1], 549 ts->total_io_u[2], 550 ts->short_io_u[0], ts->short_io_u[1], 551 ts->short_io_u[2]); 552 if (ts->continue_on_error) { 553 log_info(" errors : total=%lu, first_error=%d/<%s>\n", 554 ts->total_err_count, 555 ts->first_error, 556 strerror(ts->first_error)); 557 } 558} 559 560static void show_ddir_status_terse(struct thread_stat *ts, 561 struct group_run_stats *rs, int ddir) 562{ 563 unsigned long min, max; 564 unsigned long long bw, iops; 565 unsigned int *ovals = NULL; 566 double mean, dev; 567 unsigned int len, minv, maxv; 568 int i; 569 570 assert(ddir_rw(ddir)); 571 572 iops = bw = 0; 573 if (ts->runtime[ddir]) { 574 uint64_t runt = ts->runtime[ddir]; 575 576 bw = ts->io_bytes[ddir] / runt; 577 iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt; 578 } 579 580 log_info(";%llu;%llu;%llu;%llu", ts->io_bytes[ddir] >> 10, bw, iops, 581 ts->runtime[ddir]); 582 583 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) 584 log_info(";%lu;%lu;%f;%f", min, max, mean, dev); 585 else 586 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0); 587 588 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) 589 log_info(";%lu;%lu;%f;%f", min, max, mean, dev); 590 else 591 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0); 592 593 if (ts->clat_percentiles) { 594 len = calc_clat_percentiles(ts->io_u_plat[ddir], 595 ts->clat_stat[ddir].samples, 596 ts->percentile_list, &ovals, &maxv, 597 &minv); 598 } else 599 len = 0; 600 601 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) { 602 if (i >= len) { 603 log_info(";0%%=0"); 604 continue; 605 } 606 log_info(";%2.2f%%=%u", ts->percentile_list[i].u.f, ovals[i]); 607 } 608 609 if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) 610 log_info(";%lu;%lu;%f;%f", min, max, mean, dev); 611 else 612 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0); 613 614 if (ovals) 615 free(ovals); 616 617 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) { 618 double p_of_agg = 100.0; 619 620 if (rs->agg[ddir]) { 621 p_of_agg = mean * 100 / (double) rs->agg[ddir]; 622 if (p_of_agg > 100.0) 623 p_of_agg = 100.0; 624 } 625 626 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev); 627 } else 628 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0); 629} 630 631static void show_thread_status_terse_v2(struct thread_stat *ts, 632 struct group_run_stats *rs) 633{ 634 double io_u_dist[FIO_IO_U_MAP_NR]; 635 double io_u_lat_u[FIO_IO_U_LAT_U_NR]; 636 double io_u_lat_m[FIO_IO_U_LAT_M_NR]; 637 double usr_cpu, sys_cpu; 638 int i; 639 640 /* General Info */ 641 log_info("2;%s;%d;%d", ts->name, ts->groupid, ts->error); 642 /* Log Read Status */ 643 show_ddir_status_terse(ts, rs, 0); 644 /* Log Write Status */ 645 show_ddir_status_terse(ts, rs, 1); 646 647 /* CPU Usage */ 648 if (ts->total_run_time) { 649 double runt = (double) ts->total_run_time; 650 651 usr_cpu = (double) ts->usr_time * 100 / runt; 652 sys_cpu = (double) ts->sys_time * 100 / runt; 653 } else { 654 usr_cpu = 0; 655 sys_cpu = 0; 656 } 657 658 log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf, 659 ts->minf); 660 661 /* Calc % distribution of IO depths, usecond, msecond latency */ 662 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist); 663 stat_calc_lat_u(ts, io_u_lat_u); 664 stat_calc_lat_m(ts, io_u_lat_m); 665 666 /* Only show fixed 7 I/O depth levels*/ 667 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%", 668 io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3], 669 io_u_dist[4], io_u_dist[5], io_u_dist[6]); 670 671 /* Microsecond latency */ 672 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) 673 log_info(";%3.2f%%", io_u_lat_u[i]); 674 /* Millisecond latency */ 675 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++) 676 log_info(";%3.2f%%", io_u_lat_m[i]); 677 /* Additional output if continue_on_error set - default off*/ 678 if (ts->continue_on_error) 679 log_info(";%lu;%d", ts->total_err_count, ts->first_error); 680 log_info("\n"); 681 682 /* Additional output if description is set */ 683 if (ts->description) 684 log_info(";%s", ts->description); 685 686 log_info("\n"); 687} 688 689#define FIO_TERSE_VERSION "3" 690 691static void show_thread_status_terse_v3(struct thread_stat *ts, 692 struct group_run_stats *rs) 693{ 694 double io_u_dist[FIO_IO_U_MAP_NR]; 695 double io_u_lat_u[FIO_IO_U_LAT_U_NR]; 696 double io_u_lat_m[FIO_IO_U_LAT_M_NR]; 697 double usr_cpu, sys_cpu; 698 int i; 699 700 /* General Info */ 701 log_info("%s;%s;%s;%d;%d", FIO_TERSE_VERSION, fio_version_string, 702 ts->name, ts->groupid, ts->error); 703 /* Log Read Status */ 704 show_ddir_status_terse(ts, rs, 0); 705 /* Log Write Status */ 706 show_ddir_status_terse(ts, rs, 1); 707 708 /* CPU Usage */ 709 if (ts->total_run_time) { 710 double runt = (double) ts->total_run_time; 711 712 usr_cpu = (double) ts->usr_time * 100 / runt; 713 sys_cpu = (double) ts->sys_time * 100 / runt; 714 } else { 715 usr_cpu = 0; 716 sys_cpu = 0; 717 } 718 719 log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf, 720 ts->minf); 721 722 /* Calc % distribution of IO depths, usecond, msecond latency */ 723 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist); 724 stat_calc_lat_u(ts, io_u_lat_u); 725 stat_calc_lat_m(ts, io_u_lat_m); 726 727 /* Only show fixed 7 I/O depth levels*/ 728 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%", 729 io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3], 730 io_u_dist[4], io_u_dist[5], io_u_dist[6]); 731 732 /* Microsecond latency */ 733 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) 734 log_info(";%3.2f%%", io_u_lat_u[i]); 735 /* Millisecond latency */ 736 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++) 737 log_info(";%3.2f%%", io_u_lat_m[i]); 738 739 /* disk util stats, if any */ 740 show_disk_util(1); 741 742 /* Additional output if continue_on_error set - default off*/ 743 if (ts->continue_on_error) 744 log_info(";%lu;%d", ts->total_err_count, ts->first_error); 745 log_info("\n"); 746 747 /* Additional output if description is set */ 748 if (strlen(ts->description)) 749 log_info(";%s", ts->description); 750} 751 752static void show_thread_status_terse(struct thread_stat *ts, 753 struct group_run_stats *rs) 754{ 755 if (terse_version == 2) 756 show_thread_status_terse_v2(ts, rs); 757 else if (terse_version == 3) 758 show_thread_status_terse_v3(ts, rs); 759 else 760 log_err("fio: bad terse version!? %d\n", terse_version); 761} 762 763static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr) 764{ 765 double mean, S; 766 767 if (src->samples == 0) 768 return; 769 770 dst->min_val = min(dst->min_val, src->min_val); 771 dst->max_val = max(dst->max_val, src->max_val); 772 773 /* 774 * Compute new mean and S after the merge 775 * <http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance 776 * #Parallel_algorithm> 777 */ 778 if (nr == 1) { 779 mean = src->mean.u.f; 780 S = src->S.u.f; 781 } else { 782 double delta = src->mean.u.f - dst->mean.u.f; 783 784 mean = ((src->mean.u.f * src->samples) + 785 (dst->mean.u.f * dst->samples)) / 786 (dst->samples + src->samples); 787 788 S = src->S.u.f + dst->S.u.f + pow(delta, 2.0) * 789 (dst->samples * src->samples) / 790 (dst->samples + src->samples); 791 } 792 793 dst->samples += src->samples; 794 dst->mean.u.f = mean; 795 dst->S.u.f = S; 796} 797 798void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src) 799{ 800 int i; 801 802 for (i = 0; i < 2; i++) { 803 if (dst->max_run[i] < src->max_run[i]) 804 dst->max_run[i] = src->max_run[i]; 805 if (dst->min_run[i] && dst->min_run[i] > src->min_run[i]) 806 dst->min_run[i] = src->min_run[i]; 807 if (dst->max_bw[i] < src->max_bw[i]) 808 dst->max_bw[i] = src->max_bw[i]; 809 if (dst->min_bw[i] && dst->min_bw[i] > src->min_bw[i]) 810 dst->min_bw[i] = src->min_bw[i]; 811 812 dst->io_kb[i] += src->io_kb[i]; 813 dst->agg[i] += src->agg[i]; 814 } 815 816} 817 818void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src, int nr) 819{ 820 int l, k; 821 822 for (l = 0; l <= DDIR_WRITE; l++) { 823 sum_stat(&dst->clat_stat[l], &src->clat_stat[l], nr); 824 sum_stat(&dst->slat_stat[l], &src->slat_stat[l], nr); 825 sum_stat(&dst->lat_stat[l], &src->lat_stat[l], nr); 826 sum_stat(&dst->bw_stat[l], &src->bw_stat[l], nr); 827 828 dst->io_bytes[l] += src->io_bytes[l]; 829 830 if (dst->runtime[l] < src->runtime[l]) 831 dst->runtime[l] = src->runtime[l]; 832 } 833 834 dst->usr_time += src->usr_time; 835 dst->sys_time += src->sys_time; 836 dst->ctx += src->ctx; 837 dst->majf += src->majf; 838 dst->minf += src->minf; 839 840 for (k = 0; k < FIO_IO_U_MAP_NR; k++) 841 dst->io_u_map[k] += src->io_u_map[k]; 842 for (k = 0; k < FIO_IO_U_MAP_NR; k++) 843 dst->io_u_submit[k] += src->io_u_submit[k]; 844 for (k = 0; k < FIO_IO_U_MAP_NR; k++) 845 dst->io_u_complete[k] += src->io_u_complete[k]; 846 for (k = 0; k < FIO_IO_U_LAT_U_NR; k++) 847 dst->io_u_lat_u[k] += src->io_u_lat_u[k]; 848 for (k = 0; k < FIO_IO_U_LAT_M_NR; k++) 849 dst->io_u_lat_m[k] += src->io_u_lat_m[k]; 850 851 for (k = 0; k <= 2; k++) { 852 dst->total_io_u[k] += src->total_io_u[k]; 853 dst->short_io_u[k] += src->short_io_u[k]; 854 } 855 856 for (k = 0; k <= DDIR_WRITE; k++) { 857 int m; 858 for (m = 0; m < FIO_IO_U_PLAT_NR; m++) 859 dst->io_u_plat[k][m] += src->io_u_plat[k][m]; 860 } 861 862 dst->total_run_time += src->total_run_time; 863 dst->total_submit += src->total_submit; 864 dst->total_complete += src->total_complete; 865} 866 867void init_group_run_stat(struct group_run_stats *gs) 868{ 869 memset(gs, 0, sizeof(*gs)); 870 gs->min_bw[0] = gs->min_run[0] = ~0UL; 871 gs->min_bw[1] = gs->min_run[1] = ~0UL; 872} 873 874void init_thread_stat(struct thread_stat *ts) 875{ 876 int j; 877 878 memset(ts, 0, sizeof(*ts)); 879 880 for (j = 0; j <= DDIR_WRITE; j++) { 881 ts->lat_stat[j].min_val = -1UL; 882 ts->clat_stat[j].min_val = -1UL; 883 ts->slat_stat[j].min_val = -1UL; 884 ts->bw_stat[j].min_val = -1UL; 885 } 886 ts->groupid = -1; 887} 888 889void show_run_stats(void) 890{ 891 struct group_run_stats *runstats, *rs; 892 struct thread_data *td; 893 struct thread_stat *threadstats, *ts; 894 int i, j, nr_ts, last_ts, idx; 895 int kb_base_warned = 0; 896 897 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1)); 898 899 for (i = 0; i < groupid + 1; i++) 900 init_group_run_stat(&runstats[i]); 901 902 /* 903 * find out how many threads stats we need. if group reporting isn't 904 * enabled, it's one-per-td. 905 */ 906 nr_ts = 0; 907 last_ts = -1; 908 for_each_td(td, i) { 909 if (!td->o.group_reporting) { 910 nr_ts++; 911 continue; 912 } 913 if (last_ts == td->groupid) 914 continue; 915 916 last_ts = td->groupid; 917 nr_ts++; 918 } 919 920 threadstats = malloc(nr_ts * sizeof(struct thread_stat)); 921 922 for (i = 0; i < nr_ts; i++) 923 init_thread_stat(&threadstats[i]); 924 925 j = 0; 926 last_ts = -1; 927 idx = 0; 928 for_each_td(td, i) { 929 if (idx && (!td->o.group_reporting || 930 (td->o.group_reporting && last_ts != td->groupid))) { 931 idx = 0; 932 j++; 933 } 934 935 last_ts = td->groupid; 936 937 ts = &threadstats[j]; 938 939 ts->clat_percentiles = td->o.clat_percentiles; 940 if (td->o.overwrite_plist) 941 memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list)); 942 else 943 memcpy(ts->percentile_list, def_percentile_list, sizeof(def_percentile_list)); 944 945 idx++; 946 ts->members++; 947 948 if (ts->groupid == -1) { 949 /* 950 * These are per-group shared already 951 */ 952 strncpy(ts->name, td->o.name, FIO_JOBNAME_SIZE); 953 if (td->o.description) 954 strncpy(ts->description, td->o.description, 955 FIO_JOBNAME_SIZE); 956 else 957 memset(ts->description, 0, FIO_JOBNAME_SIZE); 958 959 ts->groupid = td->groupid; 960 961 /* 962 * first pid in group, not very useful... 963 */ 964 ts->pid = td->pid; 965 966 ts->kb_base = td->o.kb_base; 967 } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) { 968 log_info("fio: kb_base differs for jobs in group, using" 969 " %u as the base\n", ts->kb_base); 970 kb_base_warned = 1; 971 } 972 973 ts->continue_on_error = td->o.continue_on_error; 974 ts->total_err_count += td->total_err_count; 975 ts->first_error = td->first_error; 976 if (!ts->error) { 977 if (!td->error && td->o.continue_on_error && 978 td->first_error) { 979 ts->error = td->first_error; 980 strcpy(ts->verror, td->verror); 981 } else if (td->error) { 982 ts->error = td->error; 983 strcpy(ts->verror, td->verror); 984 } 985 } 986 987 sum_thread_stats(ts, &td->ts, idx); 988 } 989 990 for (i = 0; i < nr_ts; i++) { 991 unsigned long long bw; 992 993 ts = &threadstats[i]; 994 rs = &runstats[ts->groupid]; 995 rs->kb_base = ts->kb_base; 996 997 for (j = 0; j <= DDIR_WRITE; j++) { 998 if (!ts->runtime[j]) 999 continue; 1000 if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j]) 1001 rs->min_run[j] = ts->runtime[j]; 1002 if (ts->runtime[j] > rs->max_run[j]) 1003 rs->max_run[j] = ts->runtime[j]; 1004 1005 bw = 0; 1006 if (ts->runtime[j]) { 1007 unsigned long runt; 1008 1009 runt = ts->runtime[j]; 1010 bw = ts->io_bytes[j] / runt; 1011 } 1012 if (bw < rs->min_bw[j]) 1013 rs->min_bw[j] = bw; 1014 if (bw > rs->max_bw[j]) 1015 rs->max_bw[j] = bw; 1016 1017 rs->io_kb[j] += ts->io_bytes[j] / rs->kb_base; 1018 } 1019 } 1020 1021 for (i = 0; i < groupid + 1; i++) { 1022 unsigned long max_run[2]; 1023 1024 rs = &runstats[i]; 1025 max_run[0] = rs->max_run[0]; 1026 max_run[1] = rs->max_run[1]; 1027 1028 if (rs->max_run[0]) 1029 rs->agg[0] = (rs->io_kb[0] * 1000) / max_run[0]; 1030 if (rs->max_run[1]) 1031 rs->agg[1] = (rs->io_kb[1] * 1000) / max_run[1]; 1032 } 1033 1034 /* 1035 * don't overwrite last signal output 1036 */ 1037 if (!terse_output) 1038 log_info("\n"); 1039 1040 for (i = 0; i < nr_ts; i++) { 1041 ts = &threadstats[i]; 1042 rs = &runstats[ts->groupid]; 1043 1044 if (is_backend) 1045 fio_server_send_ts(ts, rs); 1046 else if (terse_output) 1047 show_thread_status_terse(ts, rs); 1048 else 1049 show_thread_status(ts, rs); 1050 } 1051 1052 for (i = 0; i < groupid + 1; i++) { 1053 rs = &runstats[i]; 1054 1055 rs->groupid = i; 1056 if (is_backend) 1057 fio_server_send_gs(rs); 1058 else if (!terse_output) 1059 show_group_stats(rs); 1060 } 1061 1062 if (is_backend) 1063 fio_server_send_du(); 1064 else if (!terse_output) 1065 show_disk_util(0); 1066 1067 free_disk_util(); 1068 1069 free(runstats); 1070 free(threadstats); 1071} 1072 1073static inline void add_stat_sample(struct io_stat *is, unsigned long data) 1074{ 1075 double val = data; 1076 double delta; 1077 1078 if (data > is->max_val) 1079 is->max_val = data; 1080 if (data < is->min_val) 1081 is->min_val = data; 1082 1083 delta = val - is->mean.u.f; 1084 if (delta) { 1085 is->mean.u.f += delta / (is->samples + 1.0); 1086 is->S.u.f += delta * (val - is->mean.u.f); 1087 } 1088 1089 is->samples++; 1090} 1091 1092static void __add_log_sample(struct io_log *iolog, unsigned long val, 1093 enum fio_ddir ddir, unsigned int bs, 1094 unsigned long t) 1095{ 1096 const int nr_samples = iolog->nr_samples; 1097 1098 if (!iolog->nr_samples) 1099 iolog->avg_last = t; 1100 1101 if (iolog->nr_samples == iolog->max_samples) { 1102 int new_size = sizeof(struct io_sample) * iolog->max_samples*2; 1103 1104 iolog->log = realloc(iolog->log, new_size); 1105 iolog->max_samples <<= 1; 1106 } 1107 1108 iolog->log[nr_samples].val = val; 1109 iolog->log[nr_samples].time = t; 1110 iolog->log[nr_samples].ddir = ddir; 1111 iolog->log[nr_samples].bs = bs; 1112 iolog->nr_samples++; 1113} 1114 1115static inline void reset_io_stat(struct io_stat *ios) 1116{ 1117 ios->max_val = ios->min_val = ios->samples = 0; 1118 ios->mean.u.f = ios->S.u.f = 0; 1119} 1120 1121static void add_log_sample(struct thread_data *td, struct io_log *iolog, 1122 unsigned long val, enum fio_ddir ddir, 1123 unsigned int bs) 1124{ 1125 unsigned long elapsed, this_window; 1126 1127 if (!ddir_rw(ddir)) 1128 return; 1129 1130 elapsed = mtime_since_now(&td->epoch); 1131 1132 /* 1133 * If no time averaging, just add the log sample. 1134 */ 1135 if (!iolog->avg_msec) { 1136 __add_log_sample(iolog, val, ddir, bs, elapsed); 1137 return; 1138 } 1139 1140 /* 1141 * Add the sample. If the time period has passed, then 1142 * add that entry to the log and clear. 1143 */ 1144 add_stat_sample(&iolog->avg_window[ddir], val); 1145 1146 /* 1147 * If period hasn't passed, adding the above sample is all we 1148 * need to do. 1149 */ 1150 this_window = elapsed - iolog->avg_last; 1151 if (this_window < iolog->avg_msec) 1152 return; 1153 1154 /* 1155 * Note an entry in the log. Use the mean from the logged samples, 1156 * making sure to properly round up. Only write a log entry if we 1157 * had actual samples done. 1158 */ 1159 if (iolog->avg_window[DDIR_READ].samples) { 1160 unsigned long mr; 1161 1162 mr = iolog->avg_window[DDIR_READ].mean.u.f + 0.50; 1163 __add_log_sample(iolog, mr, DDIR_READ, 0, elapsed); 1164 } 1165 if (iolog->avg_window[DDIR_WRITE].samples) { 1166 unsigned long mw; 1167 1168 mw = iolog->avg_window[DDIR_WRITE].mean.u.f + 0.50; 1169 __add_log_sample(iolog, mw, DDIR_WRITE, 0, elapsed); 1170 } 1171 1172 reset_io_stat(&iolog->avg_window[DDIR_READ]); 1173 reset_io_stat(&iolog->avg_window[DDIR_WRITE]); 1174 iolog->avg_last = elapsed; 1175} 1176 1177void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs) 1178{ 1179 struct io_log *iolog; 1180 1181 if (!ddir_rw(ddir)) 1182 return; 1183 1184 iolog = agg_io_log[ddir]; 1185 __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis()); 1186} 1187 1188static void add_clat_percentile_sample(struct thread_stat *ts, 1189 unsigned long usec, enum fio_ddir ddir) 1190{ 1191 unsigned int idx = plat_val_to_idx(usec); 1192 assert(idx < FIO_IO_U_PLAT_NR); 1193 1194 ts->io_u_plat[ddir][idx]++; 1195} 1196 1197void add_clat_sample(struct thread_data *td, enum fio_ddir ddir, 1198 unsigned long usec, unsigned int bs) 1199{ 1200 struct thread_stat *ts = &td->ts; 1201 1202 if (!ddir_rw(ddir)) 1203 return; 1204 1205 add_stat_sample(&ts->clat_stat[ddir], usec); 1206 1207 if (td->clat_log) 1208 add_log_sample(td, td->clat_log, usec, ddir, bs); 1209 1210 if (ts->clat_percentiles) 1211 add_clat_percentile_sample(ts, usec, ddir); 1212} 1213 1214void add_slat_sample(struct thread_data *td, enum fio_ddir ddir, 1215 unsigned long usec, unsigned int bs) 1216{ 1217 struct thread_stat *ts = &td->ts; 1218 1219 if (!ddir_rw(ddir)) 1220 return; 1221 1222 add_stat_sample(&ts->slat_stat[ddir], usec); 1223 1224 if (td->slat_log) 1225 add_log_sample(td, td->slat_log, usec, ddir, bs); 1226} 1227 1228void add_lat_sample(struct thread_data *td, enum fio_ddir ddir, 1229 unsigned long usec, unsigned int bs) 1230{ 1231 struct thread_stat *ts = &td->ts; 1232 1233 if (!ddir_rw(ddir)) 1234 return; 1235 1236 add_stat_sample(&ts->lat_stat[ddir], usec); 1237 1238 if (td->lat_log) 1239 add_log_sample(td, td->lat_log, usec, ddir, bs); 1240} 1241 1242void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs, 1243 struct timeval *t) 1244{ 1245 struct thread_stat *ts = &td->ts; 1246 unsigned long spent, rate; 1247 1248 if (!ddir_rw(ddir)) 1249 return; 1250 1251 spent = mtime_since(&td->bw_sample_time, t); 1252 if (spent < td->o.bw_avg_time) 1253 return; 1254 1255 /* 1256 * Compute both read and write rates for the interval. 1257 */ 1258 for (ddir = DDIR_READ; ddir <= DDIR_WRITE; ddir++) { 1259 uint64_t delta; 1260 1261 delta = td->this_io_bytes[ddir] - td->stat_io_bytes[ddir]; 1262 if (!delta) 1263 continue; /* No entries for interval */ 1264 1265 rate = delta * 1000 / spent / 1024; 1266 add_stat_sample(&ts->bw_stat[ddir], rate); 1267 1268 if (td->bw_log) 1269 add_log_sample(td, td->bw_log, rate, ddir, bs); 1270 1271 td->stat_io_bytes[ddir] = td->this_io_bytes[ddir]; 1272 } 1273 1274 fio_gettime(&td->bw_sample_time, NULL); 1275} 1276 1277void add_iops_sample(struct thread_data *td, enum fio_ddir ddir, 1278 struct timeval *t) 1279{ 1280 struct thread_stat *ts = &td->ts; 1281 unsigned long spent, iops; 1282 1283 if (!ddir_rw(ddir)) 1284 return; 1285 1286 spent = mtime_since(&td->iops_sample_time, t); 1287 if (spent < td->o.iops_avg_time) 1288 return; 1289 1290 /* 1291 * Compute both read and write rates for the interval. 1292 */ 1293 for (ddir = DDIR_READ; ddir <= DDIR_WRITE; ddir++) { 1294 uint64_t delta; 1295 1296 delta = td->this_io_blocks[ddir] - td->stat_io_blocks[ddir]; 1297 if (!delta) 1298 continue; /* No entries for interval */ 1299 1300 iops = (delta * 1000) / spent; 1301 add_stat_sample(&ts->iops_stat[ddir], iops); 1302 1303 if (td->iops_log) 1304 add_log_sample(td, td->iops_log, iops, ddir, 0); 1305 1306 td->stat_io_blocks[ddir] = td->this_io_blocks[ddir]; 1307 } 1308 1309 fio_gettime(&td->iops_sample_time, NULL); 1310} 1311