12 #include "lib/ieee754.h"
14 void update_rusage_stat(struct thread_data *td)
16 struct thread_stat *ts = &td->ts;
18 getrusage(RUSAGE_SELF, &td->ru_end);
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;
29 memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
33 * Given a latency, return the index of the corresponding bucket in
34 * the structure tracking percentiles.
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.
41 static unsigned int plat_val_to_idx(unsigned int val)
43 unsigned int msb, error_bits, base, offset, idx;
45 /* Find MSB starting from bit 0 */
49 msb = (sizeof(val)*8) - __builtin_clz(val) - 1;
52 * MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
53 * all bits of the sample as index
55 if (msb <= FIO_IO_U_PLAT_BITS)
58 /* Compute the number of error bits to discard*/
59 error_bits = msb - FIO_IO_U_PLAT_BITS;
61 /* Compute the number of buckets before the group */
62 base = (error_bits + 1) << FIO_IO_U_PLAT_BITS;
65 * Discard the error bits and apply the mask to find the
66 * index for the buckets in the group
68 offset = (FIO_IO_U_PLAT_VAL - 1) & (val >> error_bits);
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);
78 * Convert the given index of the bucket array to the value
79 * represented by the bucket
81 static unsigned int plat_idx_to_val(unsigned int idx)
83 unsigned int error_bits, k, base;
85 assert(idx < FIO_IO_U_PLAT_NR);
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))
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);
96 /* Find its bucket number of the group */
97 k = idx % FIO_IO_U_PLAT_VAL;
99 /* Return the mean of the range of the bucket */
100 return base + ((k + 0.5) * (1 << error_bits));
103 static int double_cmp(const void *a, const void *b)
105 const fio_fp64_t fa = *(const fio_fp64_t *) a;
106 const fio_fp64_t fb = *(const fio_fp64_t *) b;
111 else if (fa.u.f < fb.u.f)
117 unsigned 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)
121 unsigned long sum = 0;
122 unsigned int len, i, j = 0;
123 unsigned int oval_len = 0;
124 unsigned int *ovals = NULL;
131 while (len < FIO_IO_U_LIST_MAX_LEN && plist[len].u.f != 0.0)
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.
143 qsort((void *)plist, len, sizeof(plist[0]), double_cmp);
146 * Calculate bucket values, note down max and min values
149 for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) {
151 while (sum >= (plist[j].u.f / 100.0 * nr)) {
152 assert(plist[j].u.f <= 100.0);
156 ovals = realloc(ovals, oval_len * sizeof(unsigned int));
159 ovals[j] = plat_idx_to_val(i);
160 if (ovals[j] < *minv)
162 if (ovals[j] > *maxv)
165 is_last = (j == len - 1);
178 * Find and display the p-th percentile of clat
180 static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
183 unsigned int len, j = 0, minv, maxv;
185 int is_last, scale_down;
187 len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
192 * We default to usecs, but if the value range is such that we
193 * should scale down to msecs, do that.
195 if (minv > 2000 && maxv > 99999) {
197 log_info(" clat percentiles (msec):\n |");
200 log_info(" clat percentiles (usec):\n |");
203 for (j = 0; j < len; j++) {
207 if (j != 0 && (j % 4) == 0)
210 /* end of the list */
211 is_last = (j == len - 1);
213 if (plist[j].u.f < 10.0)
214 sprintf(fbuf, " %2.2f", plist[j].u.f);
216 sprintf(fbuf, "%2.2f", plist[j].u.f);
219 ovals[j] = (ovals[j] + 999) / 1000;
221 log_info(" %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ',');
226 if (j % 4 == 3) /* for formatting */
235 int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
236 double *mean, double *dev)
238 double n = is->samples;
240 if (is->samples == 0)
246 n = (double) is->samples;
247 *mean = is->mean.u.f;
250 *dev = sqrt(is->S.u.f / (n - 1.0));
257 void show_group_stats(struct group_run_stats *rs)
259 char *p1, *p2, *p3, *p4;
260 const char *ddir_str[] = { " READ", " WRITE" };
263 log_info("\nRun status group %d (all jobs):\n", rs->groupid);
265 for (i = 0; i <= DDIR_WRITE; i++) {
266 const int i2p = is_power_of_2(rs->kb_base);
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);
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],
288 void stat_calc_dist(unsigned int *map, unsigned long total, double *io_u_dist)
293 * Do depth distribution calculations
295 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
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])
306 static void stat_calc_lat(struct thread_stat *ts, double *dst,
307 unsigned int *src, int nr)
309 unsigned long total = ts_total_io_u(ts);
313 * Do latency distribution calculations
315 for (i = 0; i < nr; i++) {
317 dst[i] = (double) src[i] / (double) total;
319 if (dst[i] < 0.01 && src[i])
326 void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
328 stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
331 void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
333 stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
336 static void display_lat(const char *name, unsigned long min, unsigned long max,
337 double mean, double dev)
339 const char *base = "(usec)";
342 if (!usec_to_msec(&min, &max, &mean, &dev))
345 minp = num2str(min, 6, 1, 0);
346 maxp = num2str(max, 6, 1, 0);
348 log_info(" %s %s: min=%s, max=%s, avg=%5.02f,"
349 " stdev=%5.02f\n", name, base, minp, maxp, mean, dev);
355 static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
358 const char *ddir_str[] = { "read ", "write" };
359 unsigned long min, max, runt;
360 unsigned long long bw, iops;
362 char *io_p, *bw_p, *iops_p;
365 assert(ddir_rw(ddir));
367 if (!ts->runtime[ddir])
370 i2p = is_power_of_2(rs->kb_base);
371 runt = ts->runtime[ddir];
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);
377 iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
378 iops_p = num2str(iops, 6, 1, 0);
380 log_info(" %s: io=%sB, bw=%sB/s, iops=%s, runt=%6llumsec\n",
381 ddir_str[ddir], io_p, bw_p, iops_p,
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);
395 if (ts->clat_percentiles) {
396 show_clat_percentiles(ts->io_u_plat[ddir],
397 ts->clat_stat[ddir].samples,
398 ts->percentile_list);
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";
405 p_of_agg = mean * 100 / (double) rs->agg[ddir];
406 if (p_of_agg > 100.0)
410 if (mean > 999999.9) {
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);
424 static int show_lat(double *io_u_lat, int nr, const char **ranges,
427 int new_line = 1, i, line = 0, shown = 0;
429 for (i = 0; i < nr; i++) {
430 if (io_u_lat[i] <= 0.0)
436 log_info(" lat (%s) : ", msg);
442 log_info("%s%3.2f%%", ranges[i], io_u_lat[i]);
454 static void show_lat_u(double *io_u_lat_u)
456 const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
457 "250=", "500=", "750=", "1000=", };
459 show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec");
462 static void show_lat_m(double *io_u_lat_m)
464 const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
465 "250=", "500=", "750=", "1000=", "2000=",
468 show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec");
471 static void show_latencies(struct thread_stat *ts)
473 double io_u_lat_u[FIO_IO_U_LAT_U_NR];
474 double io_u_lat_m[FIO_IO_U_LAT_M_NR];
476 stat_calc_lat_u(ts, io_u_lat_u);
477 stat_calc_lat_m(ts, io_u_lat_m);
479 show_lat_u(io_u_lat_u);
480 show_lat_m(io_u_lat_m);
483 void show_thread_status(struct thread_stat *ts, struct group_run_stats *rs)
485 double usr_cpu, sys_cpu;
486 unsigned long runtime;
487 double io_u_dist[FIO_IO_U_MAP_NR];
492 if (!(ts->io_bytes[0] + ts->io_bytes[1]) &&
493 !(ts->total_io_u[0] + ts->total_io_u[1]))
497 ctime_r((const time_t *) &time_p, time_buf);
500 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d: %s",
501 ts->name, ts->groupid, ts->members,
502 ts->error, (int) ts->pid, time_buf);
504 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d: %s",
505 ts->name, ts->groupid, ts->members,
506 ts->error, ts->verror, (int) ts->pid,
510 if (strlen(ts->description))
511 log_info(" Description : [%s]\n", ts->description);
513 if (ts->io_bytes[DDIR_READ])
514 show_ddir_status(rs, ts, DDIR_READ);
515 if (ts->io_bytes[DDIR_WRITE])
516 show_ddir_status(rs, ts, DDIR_WRITE);
520 runtime = ts->total_run_time;
522 double runt = (double) runtime;
524 usr_cpu = (double) ts->usr_time * 100 / runt;
525 sys_cpu = (double) ts->sys_time * 100 / runt;
531 log_info(" cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu, majf=%lu,"
532 " minf=%lu\n", usr_cpu, sys_cpu, ts->ctx, ts->majf, ts->minf);
534 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
535 log_info(" IO depths : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
536 " 16=%3.1f%%, 32=%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]);
541 stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
542 log_info(" submit : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
543 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
544 io_u_dist[1], io_u_dist[2],
545 io_u_dist[3], io_u_dist[4],
546 io_u_dist[5], io_u_dist[6]);
547 stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
548 log_info(" complete : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
549 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
550 io_u_dist[1], io_u_dist[2],
551 io_u_dist[3], io_u_dist[4],
552 io_u_dist[5], io_u_dist[6]);
553 log_info(" issued : total=r=%lu/w=%lu/d=%lu,"
554 " short=r=%lu/w=%lu/d=%lu\n",
555 ts->total_io_u[0], ts->total_io_u[1],
557 ts->short_io_u[0], ts->short_io_u[1],
559 if (ts->continue_on_error) {
560 log_info(" errors : total=%lu, first_error=%d/<%s>\n",
563 strerror(ts->first_error));
567 static void show_ddir_status_terse(struct thread_stat *ts,
568 struct group_run_stats *rs, int ddir)
570 unsigned long min, max;
571 unsigned long long bw, iops;
572 unsigned int *ovals = NULL;
574 unsigned int len, minv, maxv;
577 assert(ddir_rw(ddir));
580 if (ts->runtime[ddir]) {
581 uint64_t runt = ts->runtime[ddir];
583 bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024;
584 iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt;
587 log_info(";%llu;%llu;%llu;%llu", ts->io_bytes[ddir] >> 10, bw, iops,
590 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
591 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
593 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
595 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
596 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
598 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
600 if (ts->clat_percentiles) {
601 len = calc_clat_percentiles(ts->io_u_plat[ddir],
602 ts->clat_stat[ddir].samples,
603 ts->percentile_list, &ovals, &maxv,
608 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
613 log_info(";%2.2f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
616 if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
617 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
619 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
624 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
625 double p_of_agg = 100.0;
628 p_of_agg = mean * 100 / (double) rs->agg[ddir];
629 if (p_of_agg > 100.0)
633 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
635 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
638 static void show_thread_status_terse_v2(struct thread_stat *ts,
639 struct group_run_stats *rs)
641 double io_u_dist[FIO_IO_U_MAP_NR];
642 double io_u_lat_u[FIO_IO_U_LAT_U_NR];
643 double io_u_lat_m[FIO_IO_U_LAT_M_NR];
644 double usr_cpu, sys_cpu;
648 log_info("2;%s;%d;%d", ts->name, ts->groupid, ts->error);
649 /* Log Read Status */
650 show_ddir_status_terse(ts, rs, 0);
651 /* Log Write Status */
652 show_ddir_status_terse(ts, rs, 1);
655 if (ts->total_run_time) {
656 double runt = (double) ts->total_run_time;
658 usr_cpu = (double) ts->usr_time * 100 / runt;
659 sys_cpu = (double) ts->sys_time * 100 / runt;
665 log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
668 /* Calc % distribution of IO depths, usecond, msecond latency */
669 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
670 stat_calc_lat_u(ts, io_u_lat_u);
671 stat_calc_lat_m(ts, io_u_lat_m);
673 /* Only show fixed 7 I/O depth levels*/
674 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
675 io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
676 io_u_dist[4], io_u_dist[5], io_u_dist[6]);
678 /* Microsecond latency */
679 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
680 log_info(";%3.2f%%", io_u_lat_u[i]);
681 /* Millisecond latency */
682 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
683 log_info(";%3.2f%%", io_u_lat_m[i]);
684 /* Additional output if continue_on_error set - default off*/
685 if (ts->continue_on_error)
686 log_info(";%lu;%d", ts->total_err_count, ts->first_error);
689 /* Additional output if description is set */
691 log_info(";%s", ts->description);
696 #define FIO_TERSE_VERSION "3"
698 static void show_thread_status_terse_v3(struct thread_stat *ts,
699 struct group_run_stats *rs)
701 double io_u_dist[FIO_IO_U_MAP_NR];
702 double io_u_lat_u[FIO_IO_U_LAT_U_NR];
703 double io_u_lat_m[FIO_IO_U_LAT_M_NR];
704 double usr_cpu, sys_cpu;
708 log_info("%s;%s;%s;%d;%d", FIO_TERSE_VERSION, fio_version_string,
709 ts->name, ts->groupid, ts->error);
710 /* Log Read Status */
711 show_ddir_status_terse(ts, rs, 0);
712 /* Log Write Status */
713 show_ddir_status_terse(ts, rs, 1);
716 if (ts->total_run_time) {
717 double runt = (double) ts->total_run_time;
719 usr_cpu = (double) ts->usr_time * 100 / runt;
720 sys_cpu = (double) ts->sys_time * 100 / runt;
726 log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
729 /* Calc % distribution of IO depths, usecond, msecond latency */
730 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
731 stat_calc_lat_u(ts, io_u_lat_u);
732 stat_calc_lat_m(ts, io_u_lat_m);
734 /* Only show fixed 7 I/O depth levels*/
735 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
736 io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
737 io_u_dist[4], io_u_dist[5], io_u_dist[6]);
739 /* Microsecond latency */
740 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
741 log_info(";%3.2f%%", io_u_lat_u[i]);
742 /* Millisecond latency */
743 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
744 log_info(";%3.2f%%", io_u_lat_m[i]);
746 /* disk util stats, if any */
749 /* Additional output if continue_on_error set - default off*/
750 if (ts->continue_on_error)
751 log_info(";%lu;%d", ts->total_err_count, ts->first_error);
753 /* Additional output if description is set */
754 if (strlen(ts->description))
755 log_info(";%s", ts->description);
760 static void show_thread_status_terse(struct thread_stat *ts,
761 struct group_run_stats *rs)
763 if (terse_version == 2)
764 show_thread_status_terse_v2(ts, rs);
765 else if (terse_version == 3)
766 show_thread_status_terse_v3(ts, rs);
768 log_err("fio: bad terse version!? %d\n", terse_version);
771 static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
775 if (src->samples == 0)
778 dst->min_val = min(dst->min_val, src->min_val);
779 dst->max_val = max(dst->max_val, src->max_val);
782 * Compute new mean and S after the merge
783 * <http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
784 * #Parallel_algorithm>
787 mean = src->mean.u.f;
790 double delta = src->mean.u.f - dst->mean.u.f;
792 mean = ((src->mean.u.f * src->samples) +
793 (dst->mean.u.f * dst->samples)) /
794 (dst->samples + src->samples);
796 S = src->S.u.f + dst->S.u.f + pow(delta, 2.0) *
797 (dst->samples * src->samples) /
798 (dst->samples + src->samples);
801 dst->samples += src->samples;
802 dst->mean.u.f = mean;
806 void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
810 for (i = 0; i < 2; i++) {
811 if (dst->max_run[i] < src->max_run[i])
812 dst->max_run[i] = src->max_run[i];
813 if (dst->min_run[i] && dst->min_run[i] > src->min_run[i])
814 dst->min_run[i] = src->min_run[i];
815 if (dst->max_bw[i] < src->max_bw[i])
816 dst->max_bw[i] = src->max_bw[i];
817 if (dst->min_bw[i] && dst->min_bw[i] > src->min_bw[i])
818 dst->min_bw[i] = src->min_bw[i];
820 dst->io_kb[i] += src->io_kb[i];
821 dst->agg[i] += src->agg[i];
826 void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src, int nr)
830 for (l = 0; l <= DDIR_WRITE; l++) {
831 sum_stat(&dst->clat_stat[l], &src->clat_stat[l], nr);
832 sum_stat(&dst->slat_stat[l], &src->slat_stat[l], nr);
833 sum_stat(&dst->lat_stat[l], &src->lat_stat[l], nr);
834 sum_stat(&dst->bw_stat[l], &src->bw_stat[l], nr);
836 dst->io_bytes[l] += src->io_bytes[l];
838 if (dst->runtime[l] < src->runtime[l])
839 dst->runtime[l] = src->runtime[l];
842 dst->usr_time += src->usr_time;
843 dst->sys_time += src->sys_time;
844 dst->ctx += src->ctx;
845 dst->majf += src->majf;
846 dst->minf += src->minf;
848 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
849 dst->io_u_map[k] += src->io_u_map[k];
850 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
851 dst->io_u_submit[k] += src->io_u_submit[k];
852 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
853 dst->io_u_complete[k] += src->io_u_complete[k];
854 for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
855 dst->io_u_lat_u[k] += src->io_u_lat_u[k];
856 for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
857 dst->io_u_lat_m[k] += src->io_u_lat_m[k];
859 for (k = 0; k <= 2; k++) {
860 dst->total_io_u[k] += src->total_io_u[k];
861 dst->short_io_u[k] += src->short_io_u[k];
864 for (k = 0; k <= DDIR_WRITE; k++) {
866 for (m = 0; m < FIO_IO_U_PLAT_NR; m++)
867 dst->io_u_plat[k][m] += src->io_u_plat[k][m];
870 dst->total_run_time += src->total_run_time;
871 dst->total_submit += src->total_submit;
872 dst->total_complete += src->total_complete;
875 void init_group_run_stat(struct group_run_stats *gs)
877 memset(gs, 0, sizeof(*gs));
878 gs->min_bw[0] = gs->min_run[0] = ~0UL;
879 gs->min_bw[1] = gs->min_run[1] = ~0UL;
882 void init_thread_stat(struct thread_stat *ts)
886 memset(ts, 0, sizeof(*ts));
888 for (j = 0; j <= DDIR_WRITE; j++) {
889 ts->lat_stat[j].min_val = -1UL;
890 ts->clat_stat[j].min_val = -1UL;
891 ts->slat_stat[j].min_val = -1UL;
892 ts->bw_stat[j].min_val = -1UL;
897 void show_run_stats(void)
899 struct group_run_stats *runstats, *rs;
900 struct thread_data *td;
901 struct thread_stat *threadstats, *ts;
902 int i, j, nr_ts, last_ts, idx;
903 int kb_base_warned = 0;
905 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
907 for (i = 0; i < groupid + 1; i++)
908 init_group_run_stat(&runstats[i]);
911 * find out how many threads stats we need. if group reporting isn't
912 * enabled, it's one-per-td.
917 if (!td->o.group_reporting) {
921 if (last_ts == td->groupid)
924 last_ts = td->groupid;
928 threadstats = malloc(nr_ts * sizeof(struct thread_stat));
930 for (i = 0; i < nr_ts; i++)
931 init_thread_stat(&threadstats[i]);
937 if (idx && (!td->o.group_reporting ||
938 (td->o.group_reporting && last_ts != td->groupid))) {
943 last_ts = td->groupid;
945 ts = &threadstats[j];
947 ts->clat_percentiles = td->o.clat_percentiles;
948 if (td->o.overwrite_plist)
949 memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
951 memcpy(ts->percentile_list, def_percentile_list, sizeof(def_percentile_list));
956 if (ts->groupid == -1) {
958 * These are per-group shared already
960 strncpy(ts->name, td->o.name, FIO_JOBNAME_SIZE);
961 if (td->o.description)
962 strncpy(ts->description, td->o.description,
965 memset(ts->description, 0, FIO_JOBNAME_SIZE);
968 * If multiple entries in this group, this is
971 ts->thread_number = td->thread_number;
972 ts->groupid = td->groupid;
975 * first pid in group, not very useful...
979 ts->kb_base = td->o.kb_base;
980 } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) {
981 log_info("fio: kb_base differs for jobs in group, using"
982 " %u as the base\n", ts->kb_base);
986 ts->continue_on_error = td->o.continue_on_error;
987 ts->total_err_count += td->total_err_count;
988 ts->first_error = td->first_error;
990 if (!td->error && td->o.continue_on_error &&
992 ts->error = td->first_error;
993 strcpy(ts->verror, td->verror);
994 } else if (td->error) {
995 ts->error = td->error;
996 strcpy(ts->verror, td->verror);
1000 sum_thread_stats(ts, &td->ts, idx);
1003 for (i = 0; i < nr_ts; i++) {
1004 unsigned long long bw;
1006 ts = &threadstats[i];
1007 rs = &runstats[ts->groupid];
1008 rs->kb_base = ts->kb_base;
1010 for (j = 0; j <= DDIR_WRITE; j++) {
1011 if (!ts->runtime[j])
1013 if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
1014 rs->min_run[j] = ts->runtime[j];
1015 if (ts->runtime[j] > rs->max_run[j])
1016 rs->max_run[j] = ts->runtime[j];
1019 if (ts->runtime[j]) {
1020 unsigned long runt = ts->runtime[j];
1021 unsigned long long kb;
1023 kb = ts->io_bytes[j] / rs->kb_base;
1024 bw = kb * 1000 / runt;
1026 if (bw < rs->min_bw[j])
1028 if (bw > rs->max_bw[j])
1031 rs->io_kb[j] += ts->io_bytes[j] / rs->kb_base;
1035 for (i = 0; i < groupid + 1; i++) {
1039 rs->agg[0] = (rs->io_kb[0] * 1000) / rs->max_run[0];
1041 rs->agg[1] = (rs->io_kb[1] * 1000) / rs->max_run[1];
1045 * don't overwrite last signal output
1050 for (i = 0; i < nr_ts; i++) {
1051 ts = &threadstats[i];
1052 rs = &runstats[ts->groupid];
1055 fio_server_send_ts(ts, rs);
1056 else if (terse_output)
1057 show_thread_status_terse(ts, rs);
1059 show_thread_status(ts, rs);
1062 for (i = 0; i < groupid + 1; i++) {
1067 fio_server_send_gs(rs);
1068 else if (!terse_output)
1069 show_group_stats(rs);
1073 fio_server_send_du();
1074 else if (!terse_output)
1081 static void *__show_running_run_stats(void *arg)
1083 struct thread_data *td;
1084 unsigned long long *rt;
1088 rt = malloc(thread_number * sizeof(unsigned long long));
1089 fio_gettime(&tv, NULL);
1091 for_each_td(td, i) {
1092 rt[i] = mtime_since(&td->start, &tv);
1093 if (td_read(td) && td->io_bytes[DDIR_READ])
1094 td->ts.runtime[DDIR_READ] += rt[i];
1095 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1096 td->ts.runtime[DDIR_WRITE] += rt[i];
1098 update_rusage_stat(td);
1099 td->ts.io_bytes[0] = td->io_bytes[0];
1100 td->ts.io_bytes[1] = td->io_bytes[1];
1101 td->ts.total_run_time = mtime_since(&td->epoch, &tv);
1106 for_each_td(td, i) {
1107 if (td_read(td) && td->io_bytes[DDIR_READ])
1108 td->ts.runtime[DDIR_READ] -= rt[i];
1109 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1110 td->ts.runtime[DDIR_WRITE] -= rt[i];
1118 * Called from signal handler. It _should_ be safe to just run this inline
1119 * in the sig handler, but we should be disturbing the system less by just
1120 * creating a thread to do it.
1122 void show_running_run_stats(void)
1126 pthread_create(&thread, NULL, __show_running_run_stats, NULL);
1127 pthread_detach(thread);
1130 static inline void add_stat_sample(struct io_stat *is, unsigned long data)
1135 if (data > is->max_val)
1137 if (data < is->min_val)
1140 delta = val - is->mean.u.f;
1142 is->mean.u.f += delta / (is->samples + 1.0);
1143 is->S.u.f += delta * (val - is->mean.u.f);
1149 static void __add_log_sample(struct io_log *iolog, unsigned long val,
1150 enum fio_ddir ddir, unsigned int bs,
1153 const int nr_samples = iolog->nr_samples;
1155 if (!iolog->nr_samples)
1156 iolog->avg_last = t;
1158 if (iolog->nr_samples == iolog->max_samples) {
1159 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
1161 iolog->log = realloc(iolog->log, new_size);
1162 iolog->max_samples <<= 1;
1165 iolog->log[nr_samples].val = val;
1166 iolog->log[nr_samples].time = t;
1167 iolog->log[nr_samples].ddir = ddir;
1168 iolog->log[nr_samples].bs = bs;
1169 iolog->nr_samples++;
1172 static inline void reset_io_stat(struct io_stat *ios)
1174 ios->max_val = ios->min_val = ios->samples = 0;
1175 ios->mean.u.f = ios->S.u.f = 0;
1178 static void add_log_sample(struct thread_data *td, struct io_log *iolog,
1179 unsigned long val, enum fio_ddir ddir,
1182 unsigned long elapsed, this_window;
1187 elapsed = mtime_since_now(&td->epoch);
1190 * If no time averaging, just add the log sample.
1192 if (!iolog->avg_msec) {
1193 __add_log_sample(iolog, val, ddir, bs, elapsed);
1198 * Add the sample. If the time period has passed, then
1199 * add that entry to the log and clear.
1201 add_stat_sample(&iolog->avg_window[ddir], val);
1204 * If period hasn't passed, adding the above sample is all we
1207 this_window = elapsed - iolog->avg_last;
1208 if (this_window < iolog->avg_msec)
1212 * Note an entry in the log. Use the mean from the logged samples,
1213 * making sure to properly round up. Only write a log entry if we
1214 * had actual samples done.
1216 if (iolog->avg_window[DDIR_READ].samples) {
1219 mr = iolog->avg_window[DDIR_READ].mean.u.f + 0.50;
1220 __add_log_sample(iolog, mr, DDIR_READ, 0, elapsed);
1222 if (iolog->avg_window[DDIR_WRITE].samples) {
1225 mw = iolog->avg_window[DDIR_WRITE].mean.u.f + 0.50;
1226 __add_log_sample(iolog, mw, DDIR_WRITE, 0, elapsed);
1229 reset_io_stat(&iolog->avg_window[DDIR_READ]);
1230 reset_io_stat(&iolog->avg_window[DDIR_WRITE]);
1231 iolog->avg_last = elapsed;
1234 void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
1236 struct io_log *iolog;
1241 iolog = agg_io_log[ddir];
1242 __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis());
1245 static void add_clat_percentile_sample(struct thread_stat *ts,
1246 unsigned long usec, enum fio_ddir ddir)
1248 unsigned int idx = plat_val_to_idx(usec);
1249 assert(idx < FIO_IO_U_PLAT_NR);
1251 ts->io_u_plat[ddir][idx]++;
1254 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
1255 unsigned long usec, unsigned int bs)
1257 struct thread_stat *ts = &td->ts;
1262 add_stat_sample(&ts->clat_stat[ddir], usec);
1265 add_log_sample(td, td->clat_log, usec, ddir, bs);
1267 if (ts->clat_percentiles)
1268 add_clat_percentile_sample(ts, usec, ddir);
1271 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
1272 unsigned long usec, unsigned int bs)
1274 struct thread_stat *ts = &td->ts;
1279 add_stat_sample(&ts->slat_stat[ddir], usec);
1282 add_log_sample(td, td->slat_log, usec, ddir, bs);
1285 void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
1286 unsigned long usec, unsigned int bs)
1288 struct thread_stat *ts = &td->ts;
1293 add_stat_sample(&ts->lat_stat[ddir], usec);
1296 add_log_sample(td, td->lat_log, usec, ddir, bs);
1299 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
1302 struct thread_stat *ts = &td->ts;
1303 unsigned long spent, rate;
1308 spent = mtime_since(&td->bw_sample_time, t);
1309 if (spent < td->o.bw_avg_time)
1313 * Compute both read and write rates for the interval.
1315 for (ddir = DDIR_READ; ddir <= DDIR_WRITE; ddir++) {
1318 delta = td->this_io_bytes[ddir] - td->stat_io_bytes[ddir];
1320 continue; /* No entries for interval */
1322 rate = delta * 1000 / spent / 1024;
1323 add_stat_sample(&ts->bw_stat[ddir], rate);
1326 add_log_sample(td, td->bw_log, rate, ddir, bs);
1328 td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
1331 fio_gettime(&td->bw_sample_time, NULL);
1334 void add_iops_sample(struct thread_data *td, enum fio_ddir ddir,
1337 struct thread_stat *ts = &td->ts;
1338 unsigned long spent, iops;
1343 spent = mtime_since(&td->iops_sample_time, t);
1344 if (spent < td->o.iops_avg_time)
1348 * Compute both read and write rates for the interval.
1350 for (ddir = DDIR_READ; ddir <= DDIR_WRITE; ddir++) {
1353 delta = td->this_io_blocks[ddir] - td->stat_io_blocks[ddir];
1355 continue; /* No entries for interval */
1357 iops = (delta * 1000) / spent;
1358 add_stat_sample(&ts->iops_stat[ddir], iops);
1361 add_log_sample(td, td->iops_log, iops, ddir, 0);
1363 td->stat_io_blocks[ddir] = td->this_io_blocks[ddir];
1366 fio_gettime(&td->iops_sample_time, NULL);