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Merge branch 'master' of ssh://brick.kernel.dk/data/git/fio
[fio.git] / stat.c
... / ...
CommitLineData
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
117static unsigned int calc_clat_percentiles(unsigned int *io_u_plat,
118 unsigned long nr, fio_fp64_t *plist,
119 unsigned int **output,
120 unsigned int *maxv,
121 unsigned int *minv)
122{
123 unsigned long sum = 0;
124 unsigned int len, i, j = 0;
125 unsigned int oval_len = 0;
126 unsigned int *ovals = NULL;
127 int is_last;
128
129 *minv = -1U;
130 *maxv = 0;
131
132 len = 0;
133 while (len < FIO_IO_U_LIST_MAX_LEN && plist[len].u.f != 0.0)
134 len++;
135
136 if (!len)
137 return 0;
138
139 /*
140 * Sort the percentile list. Note that it may already be sorted if
141 * we are using the default values, but since it's a short list this
142 * isn't a worry. Also note that this does not work for NaN values.
143 */
144 if (len > 1)
145 qsort((void*)plist, len, sizeof(plist[0]), double_cmp);
146
147 /*
148 * Calculate bucket values, note down max and min values
149 */
150 is_last = 0;
151 for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) {
152 sum += io_u_plat[i];
153 while (sum >= (plist[j].u.f / 100.0 * nr)) {
154 assert(plist[j].u.f <= 100.0);
155
156 if (j == oval_len) {
157 oval_len += 100;
158 ovals = realloc(ovals, oval_len * sizeof(unsigned int));
159 }
160
161 ovals[j] = plat_idx_to_val(i);
162 if (ovals[j] < *minv)
163 *minv = ovals[j];
164 if (ovals[j] > *maxv)
165 *maxv = ovals[j];
166
167 is_last = (j == len - 1);
168 if (is_last)
169 break;
170
171 j++;
172 }
173 }
174
175 *output = ovals;
176 return len;
177}
178
179/*
180 * Find and display the p-th percentile of clat
181 */
182static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
183 fio_fp64_t *plist)
184{
185 unsigned int len, j = 0, minv, maxv;
186 unsigned int *ovals;
187 int is_last, scale_down;
188
189 len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
190 if (!len)
191 goto out;
192
193 /*
194 * We default to usecs, but if the value range is such that we
195 * should scale down to msecs, do that.
196 */
197 if (minv > 2000 && maxv > 99999) {
198 scale_down = 1;
199 log_info(" clat percentiles (msec):\n |");
200 } else {
201 scale_down = 0;
202 log_info(" clat percentiles (usec):\n |");
203 }
204
205 for (j = 0; j < len; j++) {
206 char fbuf[8];
207
208 /* for formatting */
209 if (j != 0 && (j % 4) == 0)
210 log_info(" |");
211
212 /* end of the list */
213 is_last = (j == len - 1);
214
215 if (plist[j].u.f < 10.0)
216 sprintf(fbuf, " %2.2f", plist[j].u.f);
217 else
218 sprintf(fbuf, "%2.2f", plist[j].u.f);
219
220 if (scale_down)
221 ovals[j] = (ovals[j] + 999) / 1000;
222
223 log_info(" %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ',');
224
225 if (is_last)
226 break;
227
228 if (j % 4 == 3) /* for formatting */
229 log_info("\n");
230 }
231
232out:
233 if (ovals)
234 free(ovals);
235}
236
237static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
238 double *mean, double *dev)
239{
240 double n = is->samples;
241
242 if (is->samples == 0)
243 return 0;
244
245 *min = is->min_val;
246 *max = is->max_val;
247
248 n = (double) is->samples;
249 *mean = is->mean.u.f;
250
251 if (n > 1.0)
252 *dev = sqrt(is->S.u.f / (n - 1.0));
253 else
254 *dev = 0;
255
256 return 1;
257}
258
259void show_group_stats(struct group_run_stats *rs)
260{
261 char *p1, *p2, *p3, *p4;
262 const char *ddir_str[] = { " READ", " WRITE" };
263 int i;
264
265 log_info("\nRun status group %d (all jobs):\n", rs->groupid);
266
267 for (i = 0; i <= DDIR_WRITE; i++) {
268 const int i2p = is_power_of_2(rs->kb_base);
269
270 if (!rs->max_run[i])
271 continue;
272
273 p1 = num2str(rs->io_kb[i], 6, rs->kb_base, i2p);
274 p2 = num2str(rs->agg[i], 6, rs->kb_base, i2p);
275 p3 = num2str(rs->min_bw[i], 6, rs->kb_base, i2p);
276 p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p);
277
278 log_info("%s: io=%sB, aggrb=%sB/s, minb=%sB/s, maxb=%sB/s,"
279 " mint=%llumsec, maxt=%llumsec\n", ddir_str[i], p1, p2,
280 p3, p4, rs->min_run[i],
281 rs->max_run[i]);
282
283 free(p1);
284 free(p2);
285 free(p3);
286 free(p4);
287 }
288}
289
290#define ts_total_io_u(ts) \
291 ((ts)->total_io_u[0] + (ts)->total_io_u[1])
292
293static void stat_calc_dist(unsigned int *map, unsigned long total,
294 double *io_u_dist)
295{
296 int i;
297
298 /*
299 * Do depth distribution calculations
300 */
301 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
302 if (total) {
303 io_u_dist[i] = (double) map[i] / (double) total;
304 io_u_dist[i] *= 100.0;
305 if (io_u_dist[i] < 0.1 && map[i])
306 io_u_dist[i] = 0.1;
307 } else
308 io_u_dist[i] = 0.0;
309 }
310}
311
312static void stat_calc_lat(struct thread_stat *ts, double *dst,
313 unsigned int *src, int nr)
314{
315 unsigned long total = ts_total_io_u(ts);
316 int i;
317
318 /*
319 * Do latency distribution calculations
320 */
321 for (i = 0; i < nr; i++) {
322 if (total) {
323 dst[i] = (double) src[i] / (double) total;
324 dst[i] *= 100.0;
325 if (dst[i] < 0.01 && src[i])
326 dst[i] = 0.01;
327 } else
328 dst[i] = 0.0;
329 }
330}
331
332static void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
333{
334 stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
335}
336
337static void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
338{
339 stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
340}
341
342static int usec_to_msec(unsigned long *min, unsigned long *max, double *mean,
343 double *dev)
344{
345 if (*min > 1000 && *max > 1000 && *mean > 1000.0 && *dev > 1000.0) {
346 *min /= 1000;
347 *max /= 1000;
348 *mean /= 1000.0;
349 *dev /= 1000.0;
350 return 0;
351 }
352
353 return 1;
354}
355
356static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
357 int ddir)
358{
359 const char *ddir_str[] = { "read ", "write" };
360 unsigned long min, max, runt;
361 unsigned long long bw, iops;
362 double mean, dev;
363 char *io_p, *bw_p, *iops_p;
364 int i2p;
365
366 assert(ddir_rw(ddir));
367
368 if (!ts->runtime[ddir])
369 return;
370
371 i2p = is_power_of_2(rs->kb_base);
372 runt = ts->runtime[ddir];
373
374 bw = (1000 * ts->io_bytes[ddir]) / runt;
375 io_p = num2str(ts->io_bytes[ddir], 6, 1, i2p);
376 bw_p = num2str(bw, 6, 1, i2p);
377
378 iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
379 iops_p = num2str(iops, 6, 1, 0);
380
381 log_info(" %s: io=%sB, bw=%sB/s, iops=%s, runt=%6llumsec\n",
382 ddir_str[ddir], io_p, bw_p, iops_p,
383 ts->runtime[ddir]);
384
385 free(io_p);
386 free(bw_p);
387 free(iops_p);
388
389 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) {
390 const char *base = "(usec)";
391 char *minp, *maxp;
392
393 if (!usec_to_msec(&min, &max, &mean, &dev))
394 base = "(msec)";
395
396 minp = num2str(min, 6, 1, 0);
397 maxp = num2str(max, 6, 1, 0);
398
399 log_info(" slat %s: min=%s, max=%s, avg=%5.02f,"
400 " stdev=%5.02f\n", base, minp, maxp, mean, dev);
401
402 free(minp);
403 free(maxp);
404 }
405 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) {
406 const char *base = "(usec)";
407 char *minp, *maxp;
408
409 if (!usec_to_msec(&min, &max, &mean, &dev))
410 base = "(msec)";
411
412 minp = num2str(min, 6, 1, 0);
413 maxp = num2str(max, 6, 1, 0);
414
415 log_info(" clat %s: min=%s, max=%s, avg=%5.02f,"
416 " stdev=%5.02f\n", base, minp, maxp, mean, dev);
417
418 free(minp);
419 free(maxp);
420 }
421 if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
422 const char *base = "(usec)";
423 char *minp, *maxp;
424
425 if (!usec_to_msec(&min, &max, &mean, &dev))
426 base = "(msec)";
427
428 minp = num2str(min, 6, 1, 0);
429 maxp = num2str(max, 6, 1, 0);
430
431 log_info(" lat %s: min=%s, max=%s, avg=%5.02f,"
432 " stdev=%5.02f\n", base, minp, maxp, mean, dev);
433
434 free(minp);
435 free(maxp);
436 }
437 if (ts->clat_percentiles) {
438 show_clat_percentiles(ts->io_u_plat[ddir],
439 ts->clat_stat[ddir].samples,
440 ts->percentile_list);
441 }
442 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
443 double p_of_agg = 100.0;
444 const char *bw_str = "KB";
445
446 if (rs->agg[ddir]) {
447 p_of_agg = mean * 100 / (double) rs->agg[ddir];
448 if (p_of_agg > 100.0)
449 p_of_agg = 100.0;
450 }
451
452 if (mean > 999999.9) {
453 min /= 1000.0;
454 max /= 1000.0;
455 mean /= 1000.0;
456 dev /= 1000.0;
457 bw_str = "MB";
458 }
459
460 log_info(" bw (%s/s) : min=%5lu, max=%5lu, per=%3.2f%%,"
461 " avg=%5.02f, stdev=%5.02f\n", bw_str, min, max,
462 p_of_agg, mean, dev);
463 }
464}
465
466static int show_lat(double *io_u_lat, int nr, const char **ranges,
467 const char *msg)
468{
469 int new_line = 1, i, line = 0, shown = 0;
470
471 for (i = 0; i < nr; i++) {
472 if (io_u_lat[i] <= 0.0)
473 continue;
474 shown = 1;
475 if (new_line) {
476 if (line)
477 log_info("\n");
478 log_info(" lat (%s) : ", msg);
479 new_line = 0;
480 line = 0;
481 }
482 if (line)
483 log_info(", ");
484 log_info("%s%3.2f%%", ranges[i], io_u_lat[i]);
485 line++;
486 if (line == 5)
487 new_line = 1;
488 }
489
490 if (shown)
491 log_info("\n");
492
493 return shown;
494}
495
496static void show_lat_u(double *io_u_lat_u)
497{
498 const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
499 "250=", "500=", "750=", "1000=", };
500
501 show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec");
502}
503
504static void show_lat_m(double *io_u_lat_m)
505{
506 const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
507 "250=", "500=", "750=", "1000=", "2000=",
508 ">=2000=", };
509
510 show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec");
511}
512
513static void show_latencies(double *io_u_lat_u, double *io_u_lat_m)
514{
515 show_lat_u(io_u_lat_u);
516 show_lat_m(io_u_lat_m);
517}
518
519void show_thread_status(struct thread_stat *ts, struct group_run_stats *rs)
520{
521 double usr_cpu, sys_cpu;
522 unsigned long runtime;
523 double io_u_dist[FIO_IO_U_MAP_NR];
524 double io_u_lat_u[FIO_IO_U_LAT_U_NR];
525 double io_u_lat_m[FIO_IO_U_LAT_M_NR];
526 time_t time_p;
527 char time_buf[64];
528
529 if (!(ts->io_bytes[0] + ts->io_bytes[1]) &&
530 !(ts->total_io_u[0] + ts->total_io_u[1]))
531 return;
532
533 time(&time_p);
534 ctime_r((const time_t *) &time_p, time_buf);
535
536 if (!ts->error) {
537 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d: %s",
538 ts->name, ts->groupid, ts->members,
539 ts->error, (int) ts->pid, time_buf);
540 } else {
541 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d: %s",
542 ts->name, ts->groupid, ts->members,
543 ts->error, ts->verror, (int) ts->pid,
544 time_buf);
545 }
546
547 if (strlen(ts->description))
548 log_info(" Description : [%s]\n", ts->description);
549
550 if (ts->io_bytes[DDIR_READ])
551 show_ddir_status(rs, ts, DDIR_READ);
552 if (ts->io_bytes[DDIR_WRITE])
553 show_ddir_status(rs, ts, DDIR_WRITE);
554
555 stat_calc_lat_u(ts, io_u_lat_u);
556 stat_calc_lat_m(ts, io_u_lat_m);
557 show_latencies(io_u_lat_u, io_u_lat_m);
558
559 runtime = ts->total_run_time;
560 if (runtime) {
561 double runt = (double) runtime;
562
563 usr_cpu = (double) ts->usr_time * 100 / runt;
564 sys_cpu = (double) ts->sys_time * 100 / runt;
565 } else {
566 usr_cpu = 0;
567 sys_cpu = 0;
568 }
569
570 log_info(" cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu, majf=%lu,"
571 " minf=%lu\n", usr_cpu, sys_cpu, ts->ctx, ts->majf, ts->minf);
572
573 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
574 log_info(" IO depths : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
575 " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
576 io_u_dist[1], io_u_dist[2],
577 io_u_dist[3], io_u_dist[4],
578 io_u_dist[5], io_u_dist[6]);
579
580 stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
581 log_info(" submit : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
582 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
583 io_u_dist[1], io_u_dist[2],
584 io_u_dist[3], io_u_dist[4],
585 io_u_dist[5], io_u_dist[6]);
586 stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
587 log_info(" complete : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
588 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
589 io_u_dist[1], io_u_dist[2],
590 io_u_dist[3], io_u_dist[4],
591 io_u_dist[5], io_u_dist[6]);
592 log_info(" issued : total=r=%lu/w=%lu/d=%lu,"
593 " short=r=%lu/w=%lu/d=%lu\n",
594 ts->total_io_u[0], ts->total_io_u[1],
595 ts->total_io_u[2],
596 ts->short_io_u[0], ts->short_io_u[1],
597 ts->short_io_u[2]);
598 if (ts->continue_on_error) {
599 log_info(" errors : total=%lu, first_error=%d/<%s>\n",
600 ts->total_err_count,
601 ts->first_error,
602 strerror(ts->first_error));
603 }
604}
605
606static void show_ddir_status_terse(struct thread_stat *ts,
607 struct group_run_stats *rs, int ddir)
608{
609 unsigned long min, max;
610 unsigned long long bw, iops;
611 unsigned int *ovals = NULL;
612 double mean, dev;
613 unsigned int len, minv, maxv;
614 int i;
615
616 assert(ddir_rw(ddir));
617
618 iops = bw = 0;
619 if (ts->runtime[ddir]) {
620 uint64_t runt = ts->runtime[ddir];
621
622 bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024;
623 iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt;
624 }
625
626 log_info(";%llu;%llu;%llu;%llu", ts->io_bytes[ddir] >> 10, bw, iops,
627 ts->runtime[ddir]);
628
629 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
630 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
631 else
632 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
633
634 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
635 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
636 else
637 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
638
639 if (ts->clat_percentiles) {
640 len = calc_clat_percentiles(ts->io_u_plat[ddir],
641 ts->clat_stat[ddir].samples,
642 ts->percentile_list, &ovals, &maxv,
643 &minv);
644 } else
645 len = 0;
646
647 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
648 if (i >= len) {
649 log_info(";0%%=0");
650 continue;
651 }
652 log_info(";%2.2f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
653 }
654
655 if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
656 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
657 else
658 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
659
660 if (ovals)
661 free(ovals);
662
663 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
664 double p_of_agg = 100.0;
665
666 if (rs->agg[ddir]) {
667 p_of_agg = mean * 100 / (double) rs->agg[ddir];
668 if (p_of_agg > 100.0)
669 p_of_agg = 100.0;
670 }
671
672 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
673 } else
674 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
675}
676
677static void show_thread_status_terse_v2(struct thread_stat *ts,
678 struct group_run_stats *rs)
679{
680 double io_u_dist[FIO_IO_U_MAP_NR];
681 double io_u_lat_u[FIO_IO_U_LAT_U_NR];
682 double io_u_lat_m[FIO_IO_U_LAT_M_NR];
683 double usr_cpu, sys_cpu;
684 int i;
685
686 /* General Info */
687 log_info("2;%s;%d;%d", ts->name, ts->groupid, ts->error);
688 /* Log Read Status */
689 show_ddir_status_terse(ts, rs, 0);
690 /* Log Write Status */
691 show_ddir_status_terse(ts, rs, 1);
692
693 /* CPU Usage */
694 if (ts->total_run_time) {
695 double runt = (double) ts->total_run_time;
696
697 usr_cpu = (double) ts->usr_time * 100 / runt;
698 sys_cpu = (double) ts->sys_time * 100 / runt;
699 } else {
700 usr_cpu = 0;
701 sys_cpu = 0;
702 }
703
704 log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
705 ts->minf);
706
707 /* Calc % distribution of IO depths, usecond, msecond latency */
708 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
709 stat_calc_lat_u(ts, io_u_lat_u);
710 stat_calc_lat_m(ts, io_u_lat_m);
711
712 /* Only show fixed 7 I/O depth levels*/
713 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
714 io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
715 io_u_dist[4], io_u_dist[5], io_u_dist[6]);
716
717 /* Microsecond latency */
718 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
719 log_info(";%3.2f%%", io_u_lat_u[i]);
720 /* Millisecond latency */
721 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
722 log_info(";%3.2f%%", io_u_lat_m[i]);
723 /* Additional output if continue_on_error set - default off*/
724 if (ts->continue_on_error)
725 log_info(";%lu;%d", ts->total_err_count, ts->first_error);
726 log_info("\n");
727
728 /* Additional output if description is set */
729 if (ts->description)
730 log_info(";%s", ts->description);
731
732 log_info("\n");
733}
734
735#define FIO_TERSE_VERSION "3"
736
737static void show_thread_status_terse_v3(struct thread_stat *ts,
738 struct group_run_stats *rs)
739{
740 double io_u_dist[FIO_IO_U_MAP_NR];
741 double io_u_lat_u[FIO_IO_U_LAT_U_NR];
742 double io_u_lat_m[FIO_IO_U_LAT_M_NR];
743 double usr_cpu, sys_cpu;
744 int i;
745
746 /* General Info */
747 log_info("%s;%s;%s;%d;%d", FIO_TERSE_VERSION, fio_version_string,
748 ts->name, ts->groupid, ts->error);
749 /* Log Read Status */
750 show_ddir_status_terse(ts, rs, 0);
751 /* Log Write Status */
752 show_ddir_status_terse(ts, rs, 1);
753
754 /* CPU Usage */
755 if (ts->total_run_time) {
756 double runt = (double) ts->total_run_time;
757
758 usr_cpu = (double) ts->usr_time * 100 / runt;
759 sys_cpu = (double) ts->sys_time * 100 / runt;
760 } else {
761 usr_cpu = 0;
762 sys_cpu = 0;
763 }
764
765 log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
766 ts->minf);
767
768 /* Calc % distribution of IO depths, usecond, msecond latency */
769 stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
770 stat_calc_lat_u(ts, io_u_lat_u);
771 stat_calc_lat_m(ts, io_u_lat_m);
772
773 /* Only show fixed 7 I/O depth levels*/
774 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
775 io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
776 io_u_dist[4], io_u_dist[5], io_u_dist[6]);
777
778 /* Microsecond latency */
779 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
780 log_info(";%3.2f%%", io_u_lat_u[i]);
781 /* Millisecond latency */
782 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
783 log_info(";%3.2f%%", io_u_lat_m[i]);
784
785 /* disk util stats, if any */
786 show_disk_util(1);
787
788 /* Additional output if continue_on_error set - default off*/
789 if (ts->continue_on_error)
790 log_info(";%lu;%d", ts->total_err_count, ts->first_error);
791
792 /* Additional output if description is set */
793 if (strlen(ts->description))
794 log_info(";%s", ts->description);
795
796 log_info("\n");
797}
798
799static void show_thread_status_terse(struct thread_stat *ts,
800 struct group_run_stats *rs)
801{
802 if (terse_version == 2)
803 show_thread_status_terse_v2(ts, rs);
804 else if (terse_version == 3)
805 show_thread_status_terse_v3(ts, rs);
806 else
807 log_err("fio: bad terse version!? %d\n", terse_version);
808}
809
810static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
811{
812 double mean, S;
813
814 if (src->samples == 0)
815 return;
816
817 dst->min_val = min(dst->min_val, src->min_val);
818 dst->max_val = max(dst->max_val, src->max_val);
819
820 /*
821 * Compute new mean and S after the merge
822 * <http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
823 * #Parallel_algorithm>
824 */
825 if (nr == 1) {
826 mean = src->mean.u.f;
827 S = src->S.u.f;
828 } else {
829 double delta = src->mean.u.f - dst->mean.u.f;
830
831 mean = ((src->mean.u.f * src->samples) +
832 (dst->mean.u.f * dst->samples)) /
833 (dst->samples + src->samples);
834
835 S = src->S.u.f + dst->S.u.f + pow(delta, 2.0) *
836 (dst->samples * src->samples) /
837 (dst->samples + src->samples);
838 }
839
840 dst->samples += src->samples;
841 dst->mean.u.f = mean;
842 dst->S.u.f = S;
843}
844
845void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
846{
847 int i;
848
849 for (i = 0; i < 2; i++) {
850 if (dst->max_run[i] < src->max_run[i])
851 dst->max_run[i] = src->max_run[i];
852 if (dst->min_run[i] && dst->min_run[i] > src->min_run[i])
853 dst->min_run[i] = src->min_run[i];
854 if (dst->max_bw[i] < src->max_bw[i])
855 dst->max_bw[i] = src->max_bw[i];
856 if (dst->min_bw[i] && dst->min_bw[i] > src->min_bw[i])
857 dst->min_bw[i] = src->min_bw[i];
858
859 dst->io_kb[i] += src->io_kb[i];
860 dst->agg[i] += src->agg[i];
861 }
862
863}
864
865void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src, int nr)
866{
867 int l, k;
868
869 for (l = 0; l <= DDIR_WRITE; l++) {
870 sum_stat(&dst->clat_stat[l], &src->clat_stat[l], nr);
871 sum_stat(&dst->slat_stat[l], &src->slat_stat[l], nr);
872 sum_stat(&dst->lat_stat[l], &src->lat_stat[l], nr);
873 sum_stat(&dst->bw_stat[l], &src->bw_stat[l], nr);
874
875 dst->io_bytes[l] += src->io_bytes[l];
876
877 if (dst->runtime[l] < src->runtime[l])
878 dst->runtime[l] = src->runtime[l];
879 }
880
881 dst->usr_time += src->usr_time;
882 dst->sys_time += src->sys_time;
883 dst->ctx += src->ctx;
884 dst->majf += src->majf;
885 dst->minf += src->minf;
886
887 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
888 dst->io_u_map[k] += src->io_u_map[k];
889 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
890 dst->io_u_submit[k] += src->io_u_submit[k];
891 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
892 dst->io_u_complete[k] += src->io_u_complete[k];
893 for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
894 dst->io_u_lat_u[k] += src->io_u_lat_u[k];
895 for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
896 dst->io_u_lat_m[k] += src->io_u_lat_m[k];
897
898 for (k = 0; k <= 2; k++) {
899 dst->total_io_u[k] += src->total_io_u[k];
900 dst->short_io_u[k] += src->short_io_u[k];
901 }
902
903 for (k = 0; k <= DDIR_WRITE; k++) {
904 int m;
905 for (m = 0; m < FIO_IO_U_PLAT_NR; m++)
906 dst->io_u_plat[k][m] += src->io_u_plat[k][m];
907 }
908
909 dst->total_run_time += src->total_run_time;
910 dst->total_submit += src->total_submit;
911 dst->total_complete += src->total_complete;
912}
913
914void init_group_run_stat(struct group_run_stats *gs)
915{
916 memset(gs, 0, sizeof(*gs));
917 gs->min_bw[0] = gs->min_run[0] = ~0UL;
918 gs->min_bw[1] = gs->min_run[1] = ~0UL;
919}
920
921void init_thread_stat(struct thread_stat *ts)
922{
923 int j;
924
925 memset(ts, 0, sizeof(*ts));
926
927 for (j = 0; j <= DDIR_WRITE; j++) {
928 ts->lat_stat[j].min_val = -1UL;
929 ts->clat_stat[j].min_val = -1UL;
930 ts->slat_stat[j].min_val = -1UL;
931 ts->bw_stat[j].min_val = -1UL;
932 }
933 ts->groupid = -1;
934}
935
936void show_run_stats(void)
937{
938 struct group_run_stats *runstats, *rs;
939 struct thread_data *td;
940 struct thread_stat *threadstats, *ts;
941 int i, j, nr_ts, last_ts, idx;
942 int kb_base_warned = 0;
943
944 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
945
946 for (i = 0; i < groupid + 1; i++)
947 init_group_run_stat(&runstats[i]);
948
949 /*
950 * find out how many threads stats we need. if group reporting isn't
951 * enabled, it's one-per-td.
952 */
953 nr_ts = 0;
954 last_ts = -1;
955 for_each_td(td, i) {
956 if (!td->o.group_reporting) {
957 nr_ts++;
958 continue;
959 }
960 if (last_ts == td->groupid)
961 continue;
962
963 last_ts = td->groupid;
964 nr_ts++;
965 }
966
967 threadstats = malloc(nr_ts * sizeof(struct thread_stat));
968
969 for (i = 0; i < nr_ts; i++)
970 init_thread_stat(&threadstats[i]);
971
972 j = 0;
973 last_ts = -1;
974 idx = 0;
975 for_each_td(td, i) {
976 if (idx && (!td->o.group_reporting ||
977 (td->o.group_reporting && last_ts != td->groupid))) {
978 idx = 0;
979 j++;
980 }
981
982 last_ts = td->groupid;
983
984 ts = &threadstats[j];
985
986 ts->clat_percentiles = td->o.clat_percentiles;
987 if (td->o.overwrite_plist)
988 memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
989 else
990 memcpy(ts->percentile_list, def_percentile_list, sizeof(def_percentile_list));
991
992 idx++;
993 ts->members++;
994
995 if (ts->groupid == -1) {
996 /*
997 * These are per-group shared already
998 */
999 strncpy(ts->name, td->o.name, FIO_JOBNAME_SIZE);
1000 if (td->o.description)
1001 strncpy(ts->description, td->o.description,
1002 FIO_JOBNAME_SIZE);
1003 else
1004 memset(ts->description, 0, FIO_JOBNAME_SIZE);
1005
1006 ts->groupid = td->groupid;
1007
1008 /*
1009 * first pid in group, not very useful...
1010 */
1011 ts->pid = td->pid;
1012
1013 ts->kb_base = td->o.kb_base;
1014 } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) {
1015 log_info("fio: kb_base differs for jobs in group, using"
1016 " %u as the base\n", ts->kb_base);
1017 kb_base_warned = 1;
1018 }
1019
1020 ts->continue_on_error = td->o.continue_on_error;
1021 ts->total_err_count += td->total_err_count;
1022 ts->first_error = td->first_error;
1023 if (!ts->error) {
1024 if (!td->error && td->o.continue_on_error &&
1025 td->first_error) {
1026 ts->error = td->first_error;
1027 strcpy(ts->verror, td->verror);
1028 } else if (td->error) {
1029 ts->error = td->error;
1030 strcpy(ts->verror, td->verror);
1031 }
1032 }
1033
1034 sum_thread_stats(ts, &td->ts, idx);
1035 }
1036
1037 for (i = 0; i < nr_ts; i++) {
1038 unsigned long long bw;
1039
1040 ts = &threadstats[i];
1041 rs = &runstats[ts->groupid];
1042 rs->kb_base = ts->kb_base;
1043
1044 for (j = 0; j <= DDIR_WRITE; j++) {
1045 if (!ts->runtime[j])
1046 continue;
1047 if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
1048 rs->min_run[j] = ts->runtime[j];
1049 if (ts->runtime[j] > rs->max_run[j])
1050 rs->max_run[j] = ts->runtime[j];
1051
1052 bw = 0;
1053 if (ts->runtime[j]) {
1054 unsigned long runt = ts->runtime[j];
1055 unsigned long long kb;
1056
1057 kb = ts->io_bytes[j] / rs->kb_base;
1058 bw = kb * 1000 / runt;
1059 }
1060 if (bw < rs->min_bw[j])
1061 rs->min_bw[j] = bw;
1062 if (bw > rs->max_bw[j])
1063 rs->max_bw[j] = bw;
1064
1065 rs->io_kb[j] += ts->io_bytes[j] / rs->kb_base;
1066 }
1067 }
1068
1069 for (i = 0; i < groupid + 1; i++) {
1070 rs = &runstats[i];
1071
1072 if (rs->max_run[0])
1073 rs->agg[0] = (rs->io_kb[0] * 1000) / rs->max_run[0];
1074 if (rs->max_run[1])
1075 rs->agg[1] = (rs->io_kb[1] * 1000) / rs->max_run[1];
1076 }
1077
1078 /*
1079 * don't overwrite last signal output
1080 */
1081 if (!terse_output)
1082 log_info("\n");
1083
1084 for (i = 0; i < nr_ts; i++) {
1085 ts = &threadstats[i];
1086 rs = &runstats[ts->groupid];
1087
1088 if (is_backend)
1089 fio_server_send_ts(ts, rs);
1090 else if (terse_output)
1091 show_thread_status_terse(ts, rs);
1092 else
1093 show_thread_status(ts, rs);
1094 }
1095
1096 for (i = 0; i < groupid + 1; i++) {
1097 rs = &runstats[i];
1098
1099 rs->groupid = i;
1100 if (is_backend)
1101 fio_server_send_gs(rs);
1102 else if (!terse_output)
1103 show_group_stats(rs);
1104 }
1105
1106 if (is_backend)
1107 fio_server_send_du();
1108 else if (!terse_output)
1109 show_disk_util(0);
1110
1111 free(runstats);
1112 free(threadstats);
1113}
1114
1115static void *__show_running_run_stats(void *arg)
1116{
1117 struct thread_data *td;
1118 unsigned long long *rt;
1119 struct timeval tv;
1120 int i;
1121
1122 rt = malloc(thread_number * sizeof(unsigned long long));
1123 fio_gettime(&tv, NULL);
1124
1125 for_each_td(td, i) {
1126 rt[i] = mtime_since(&td->start, &tv);
1127 if (td_read(td) && td->io_bytes[DDIR_READ])
1128 td->ts.runtime[DDIR_READ] += rt[i];
1129 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1130 td->ts.runtime[DDIR_WRITE] += rt[i];
1131
1132 update_rusage_stat(td);
1133 td->ts.io_bytes[0] = td->io_bytes[0];
1134 td->ts.io_bytes[1] = td->io_bytes[1];
1135 td->ts.total_run_time = mtime_since(&td->epoch, &tv);
1136 }
1137
1138 show_run_stats();
1139
1140 for_each_td(td, i) {
1141 if (td_read(td) && td->io_bytes[DDIR_READ])
1142 td->ts.runtime[DDIR_READ] -= rt[i];
1143 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1144 td->ts.runtime[DDIR_WRITE] -= rt[i];
1145 }
1146
1147 free(rt);
1148 return NULL;
1149}
1150
1151/*
1152 * Called from signal handler. It _should_ be safe to just run this inline
1153 * in the sig handler, but we should be disturbing the system less by just
1154 * creating a thread to do it.
1155 */
1156void show_running_run_stats(void)
1157{
1158 pthread_t thread;
1159
1160 pthread_create(&thread, NULL, __show_running_run_stats, NULL);
1161 pthread_detach(thread);
1162}
1163
1164static inline void add_stat_sample(struct io_stat *is, unsigned long data)
1165{
1166 double val = data;
1167 double delta;
1168
1169 if (data > is->max_val)
1170 is->max_val = data;
1171 if (data < is->min_val)
1172 is->min_val = data;
1173
1174 delta = val - is->mean.u.f;
1175 if (delta) {
1176 is->mean.u.f += delta / (is->samples + 1.0);
1177 is->S.u.f += delta * (val - is->mean.u.f);
1178 }
1179
1180 is->samples++;
1181}
1182
1183static void __add_log_sample(struct io_log *iolog, unsigned long val,
1184 enum fio_ddir ddir, unsigned int bs,
1185 unsigned long t)
1186{
1187 const int nr_samples = iolog->nr_samples;
1188
1189 if (!iolog->nr_samples)
1190 iolog->avg_last = t;
1191
1192 if (iolog->nr_samples == iolog->max_samples) {
1193 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
1194
1195 iolog->log = realloc(iolog->log, new_size);
1196 iolog->max_samples <<= 1;
1197 }
1198
1199 iolog->log[nr_samples].val = val;
1200 iolog->log[nr_samples].time = t;
1201 iolog->log[nr_samples].ddir = ddir;
1202 iolog->log[nr_samples].bs = bs;
1203 iolog->nr_samples++;
1204}
1205
1206static inline void reset_io_stat(struct io_stat *ios)
1207{
1208 ios->max_val = ios->min_val = ios->samples = 0;
1209 ios->mean.u.f = ios->S.u.f = 0;
1210}
1211
1212static void add_log_sample(struct thread_data *td, struct io_log *iolog,
1213 unsigned long val, enum fio_ddir ddir,
1214 unsigned int bs)
1215{
1216 unsigned long elapsed, this_window;
1217
1218 if (!ddir_rw(ddir))
1219 return;
1220
1221 elapsed = mtime_since_now(&td->epoch);
1222
1223 /*
1224 * If no time averaging, just add the log sample.
1225 */
1226 if (!iolog->avg_msec) {
1227 __add_log_sample(iolog, val, ddir, bs, elapsed);
1228 return;
1229 }
1230
1231 /*
1232 * Add the sample. If the time period has passed, then
1233 * add that entry to the log and clear.
1234 */
1235 add_stat_sample(&iolog->avg_window[ddir], val);
1236
1237 /*
1238 * If period hasn't passed, adding the above sample is all we
1239 * need to do.
1240 */
1241 this_window = elapsed - iolog->avg_last;
1242 if (this_window < iolog->avg_msec)
1243 return;
1244
1245 /*
1246 * Note an entry in the log. Use the mean from the logged samples,
1247 * making sure to properly round up. Only write a log entry if we
1248 * had actual samples done.
1249 */
1250 if (iolog->avg_window[DDIR_READ].samples) {
1251 unsigned long mr;
1252
1253 mr = iolog->avg_window[DDIR_READ].mean.u.f + 0.50;
1254 __add_log_sample(iolog, mr, DDIR_READ, 0, elapsed);
1255 }
1256 if (iolog->avg_window[DDIR_WRITE].samples) {
1257 unsigned long mw;
1258
1259 mw = iolog->avg_window[DDIR_WRITE].mean.u.f + 0.50;
1260 __add_log_sample(iolog, mw, DDIR_WRITE, 0, elapsed);
1261 }
1262
1263 reset_io_stat(&iolog->avg_window[DDIR_READ]);
1264 reset_io_stat(&iolog->avg_window[DDIR_WRITE]);
1265 iolog->avg_last = elapsed;
1266}
1267
1268void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
1269{
1270 struct io_log *iolog;
1271
1272 if (!ddir_rw(ddir))
1273 return;
1274
1275 iolog = agg_io_log[ddir];
1276 __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis());
1277}
1278
1279static void add_clat_percentile_sample(struct thread_stat *ts,
1280 unsigned long usec, enum fio_ddir ddir)
1281{
1282 unsigned int idx = plat_val_to_idx(usec);
1283 assert(idx < FIO_IO_U_PLAT_NR);
1284
1285 ts->io_u_plat[ddir][idx]++;
1286}
1287
1288void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
1289 unsigned long usec, unsigned int bs)
1290{
1291 struct thread_stat *ts = &td->ts;
1292
1293 if (!ddir_rw(ddir))
1294 return;
1295
1296 add_stat_sample(&ts->clat_stat[ddir], usec);
1297
1298 if (td->clat_log)
1299 add_log_sample(td, td->clat_log, usec, ddir, bs);
1300
1301 if (ts->clat_percentiles)
1302 add_clat_percentile_sample(ts, usec, ddir);
1303}
1304
1305void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
1306 unsigned long usec, unsigned int bs)
1307{
1308 struct thread_stat *ts = &td->ts;
1309
1310 if (!ddir_rw(ddir))
1311 return;
1312
1313 add_stat_sample(&ts->slat_stat[ddir], usec);
1314
1315 if (td->slat_log)
1316 add_log_sample(td, td->slat_log, usec, ddir, bs);
1317}
1318
1319void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
1320 unsigned long usec, unsigned int bs)
1321{
1322 struct thread_stat *ts = &td->ts;
1323
1324 if (!ddir_rw(ddir))
1325 return;
1326
1327 add_stat_sample(&ts->lat_stat[ddir], usec);
1328
1329 if (td->lat_log)
1330 add_log_sample(td, td->lat_log, usec, ddir, bs);
1331}
1332
1333void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
1334 struct timeval *t)
1335{
1336 struct thread_stat *ts = &td->ts;
1337 unsigned long spent, rate;
1338
1339 if (!ddir_rw(ddir))
1340 return;
1341
1342 spent = mtime_since(&td->bw_sample_time, t);
1343 if (spent < td->o.bw_avg_time)
1344 return;
1345
1346 /*
1347 * Compute both read and write rates for the interval.
1348 */
1349 for (ddir = DDIR_READ; ddir <= DDIR_WRITE; ddir++) {
1350 uint64_t delta;
1351
1352 delta = td->this_io_bytes[ddir] - td->stat_io_bytes[ddir];
1353 if (!delta)
1354 continue; /* No entries for interval */
1355
1356 rate = delta * 1000 / spent / 1024;
1357 add_stat_sample(&ts->bw_stat[ddir], rate);
1358
1359 if (td->bw_log)
1360 add_log_sample(td, td->bw_log, rate, ddir, bs);
1361
1362 td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
1363 }
1364
1365 fio_gettime(&td->bw_sample_time, NULL);
1366}
1367
1368void add_iops_sample(struct thread_data *td, enum fio_ddir ddir,
1369 struct timeval *t)
1370{
1371 struct thread_stat *ts = &td->ts;
1372 unsigned long spent, iops;
1373
1374 if (!ddir_rw(ddir))
1375 return;
1376
1377 spent = mtime_since(&td->iops_sample_time, t);
1378 if (spent < td->o.iops_avg_time)
1379 return;
1380
1381 /*
1382 * Compute both read and write rates for the interval.
1383 */
1384 for (ddir = DDIR_READ; ddir <= DDIR_WRITE; ddir++) {
1385 uint64_t delta;
1386
1387 delta = td->this_io_blocks[ddir] - td->stat_io_blocks[ddir];
1388 if (!delta)
1389 continue; /* No entries for interval */
1390
1391 iops = (delta * 1000) / spent;
1392 add_stat_sample(&ts->iops_stat[ddir], iops);
1393
1394 if (td->iops_log)
1395 add_log_sample(td, td->iops_log, iops, ddir, 0);
1396
1397 td->stat_io_blocks[ddir] = td->this_io_blocks[ddir];
1398 }
1399
1400 fio_gettime(&td->iops_sample_time, NULL);
1401}
fio - Flexible IO Tester