12 static struct itimerval itimer;
13 static struct list_head disk_list = LIST_HEAD_INIT(disk_list);
16 * Cheasy number->string conversion, complete with carry rounding error.
18 static char *num2str(unsigned long num, int maxlen, int base)
21 * could be passed in for 10^3 base, but every caller expects
22 * 2^10 base right now.
24 const unsigned int thousand = 1024;
25 char postfix[] = { 'K', 'M', 'G', 'P', 'E' };
31 for (i = 0; base > 1; i++)
37 len = sprintf(buf, "%'lu", num);
39 buf[len] = postfix[i];
44 if ((num % thousand) >= (thousand / 2))
55 static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus)
62 f = fopen(du->path, "r");
66 p = fgets(line, sizeof(line), f);
72 if (sscanf(p, "%u %u %llu %u %u %u %llu %u %u %u %u\n", &dus->ios[0], &dus->merges[0], &dus->sectors[0], &dus->ticks[0], &dus->ios[1], &dus->merges[1], &dus->sectors[1], &dus->ticks[1], &in_flight, &dus->io_ticks, &dus->time_in_queue) != 11) {
81 static void update_io_tick_disk(struct disk_util *du)
83 struct disk_util_stat __dus, *dus, *ldus;
86 if (get_io_ticks(du, &__dus))
92 dus->sectors[0] += (__dus.sectors[0] - ldus->sectors[0]);
93 dus->sectors[1] += (__dus.sectors[1] - ldus->sectors[1]);
94 dus->ios[0] += (__dus.ios[0] - ldus->ios[0]);
95 dus->ios[1] += (__dus.ios[1] - ldus->ios[1]);
96 dus->merges[0] += (__dus.merges[0] - ldus->merges[0]);
97 dus->merges[1] += (__dus.merges[1] - ldus->merges[1]);
98 dus->ticks[0] += (__dus.ticks[0] - ldus->ticks[0]);
99 dus->ticks[1] += (__dus.ticks[1] - ldus->ticks[1]);
100 dus->io_ticks += (__dus.io_ticks - ldus->io_ticks);
101 dus->time_in_queue += (__dus.time_in_queue - ldus->time_in_queue);
103 fio_gettime(&t, NULL);
104 du->msec += mtime_since(&du->time, &t);
105 memcpy(&du->time, &t, sizeof(t));
106 memcpy(ldus, &__dus, sizeof(__dus));
109 void update_io_ticks(void)
111 struct list_head *entry;
112 struct disk_util *du;
114 list_for_each(entry, &disk_list) {
115 du = list_entry(entry, struct disk_util, list);
116 update_io_tick_disk(du);
120 static int disk_util_exists(dev_t dev)
122 struct list_head *entry;
123 struct disk_util *du;
125 list_for_each(entry, &disk_list) {
126 du = list_entry(entry, struct disk_util, list);
135 static void disk_util_add(dev_t dev, char *path)
137 struct disk_util *du, *__du;
138 struct list_head *entry;
140 du = malloc(sizeof(*du));
141 memset(du, 0, sizeof(*du));
142 INIT_LIST_HEAD(&du->list);
143 sprintf(du->path, "%s/stat", path);
144 du->name = strdup(basename(path));
147 list_for_each(entry, &disk_list) {
148 __du = list_entry(entry, struct disk_util, list);
150 if (!strcmp(du->name, __du->name)) {
157 fio_gettime(&du->time, NULL);
158 get_io_ticks(du, &du->last_dus);
160 list_add_tail(&du->list, &disk_list);
163 static int check_dev_match(dev_t dev, char *path)
165 unsigned int major, minor;
169 f = fopen(path, "r");
175 p = fgets(line, sizeof(line), f);
181 if (sscanf(p, "%u:%u", &major, &minor) != 2) {
186 if (((major << 8) | minor) == dev) {
195 static int find_block_dir(dev_t dev, char *path)
206 while ((dir = readdir(D)) != NULL) {
209 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
212 sprintf(full_path, "%s/%s", path, dir->d_name);
214 if (!strcmp(dir->d_name, "dev")) {
215 if (!check_dev_match(dev, full_path)) {
221 if (lstat(full_path, &st) == -1) {
226 if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode))
229 found = find_block_dir(dev, full_path);
231 strcpy(path, full_path);
240 void init_disk_util(struct thread_data *td)
244 char foo[PATH_MAX], tmp[PATH_MAX];
248 if (!td->do_disk_util || (td->io_ops->flags & (FIO_NETIO | FIO_NULLIO)))
252 * Just use the same file, they are on the same device.
255 if (!stat(f->file_name, &st)) {
256 if (S_ISBLK(st.st_mode))
262 * must be a file, open "." in that path
264 strncpy(foo, f->file_name, PATH_MAX - 1);
267 perror("disk util stat");
274 if (disk_util_exists(dev))
277 sprintf(foo, "/sys/block");
278 if (!find_block_dir(dev, foo))
282 * If there's a ../queue/ directory there, we are inside a partition.
283 * Check if that is the case and jump back. For loop/md/dm etc we
284 * are already in the right spot.
286 sprintf(tmp, "%s/../queue", foo);
287 if (!stat(tmp, &st)) {
289 sprintf(tmp, "%s/queue", p);
290 if (stat(tmp, &st)) {
291 log_err("unknown sysfs layout\n");
294 strncpy(tmp, p, PATH_MAX - 1);
295 sprintf(foo, "%s", tmp);
299 td->sysfs_root = strdup(foo);
301 disk_util_add(dev, foo);
304 void disk_util_timer_arm(void)
306 itimer.it_value.tv_sec = 0;
307 itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
308 setitimer(ITIMER_REAL, &itimer, NULL);
311 void update_rusage_stat(struct thread_data *td)
313 struct thread_stat *ts = &td->ts;
315 getrusage(RUSAGE_SELF, &ts->ru_end);
317 ts->usr_time += mtime_since(&ts->ru_start.ru_utime, &ts->ru_end.ru_utime);
318 ts->sys_time += mtime_since(&ts->ru_start.ru_stime, &ts->ru_end.ru_stime);
319 ts->ctx += ts->ru_end.ru_nvcsw + ts->ru_end.ru_nivcsw - (ts->ru_start.ru_nvcsw + ts->ru_start.ru_nivcsw);
321 memcpy(&ts->ru_start, &ts->ru_end, sizeof(ts->ru_end));
324 static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
325 double *mean, double *dev)
327 double n = is->samples;
329 if (is->samples == 0)
335 n = (double) is->samples;
339 *dev = sqrt(is->S / (n - 1.0));
346 static void show_group_stats(struct group_run_stats *rs, int id)
348 char *p1, *p2, *p3, *p4;
349 const char *ddir_str[] = { " READ", " WRITE" };
352 fprintf(f_out, "\nRun status group %d (all jobs):\n", id);
354 for (i = 0; i <= DDIR_WRITE; i++) {
358 p1 = num2str(rs->io_kb[i], 6, 1);
359 p2 = num2str(rs->agg[i], 6, 1);
360 p3 = num2str(rs->min_bw[i], 6, 1);
361 p4 = num2str(rs->max_bw[i], 6, 1);
363 fprintf(f_out, "%s: io=%siB, aggrb=%siB/s, minb=%siB/s, maxb=%siB/s, mint=%llumsec, maxt=%llumsec\n", ddir_str[i], p1, p2, p3, p4, rs->min_run[0], rs->max_run[0]);
372 static void show_disk_util(void)
374 struct disk_util_stat *dus;
375 struct list_head *entry, *next;
376 struct disk_util *du;
379 fprintf(f_out, "\nDisk stats (read/write):\n");
381 list_for_each(entry, &disk_list) {
382 du = list_entry(entry, struct disk_util, list);
385 util = (double) 100 * du->dus.io_ticks / (double) du->msec;
389 fprintf(f_out, " %s: ios=%u/%u, merge=%u/%u, ticks=%u/%u, in_queue=%u, util=%3.2f%%\n", du->name, dus->ios[0], dus->ios[1], dus->merges[0], dus->merges[1], dus->ticks[0], dus->ticks[1], dus->time_in_queue, util);
395 list_for_each_safe(entry, next, &disk_list) {
397 du = list_entry(entry, struct disk_util, list);
403 static void show_ddir_status(struct thread_data *td, struct group_run_stats *rs,
406 const char *ddir_str[] = { "read ", "write" };
407 struct thread_stat *ts;
408 unsigned long min, max;
409 unsigned long long bw;
413 if (!td->runtime[ddir])
416 bw = td->io_bytes[ddir] / td->runtime[ddir];
417 io_p = num2str(td->io_bytes[ddir] >> 10, 6, 1);
418 bw_p = num2str(bw, 6, 1);
420 fprintf(f_out, " %s: io=%siB, bw=%siB/s, runt=%6lumsec\n", ddir_str[ddir], io_p, bw_p, td->runtime[ddir]);
426 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
427 fprintf(f_out, " slat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
429 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
430 fprintf(f_out, " clat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
432 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
435 p_of_agg = mean * 100 / (double) rs->agg[ddir];
436 fprintf(f_out, " bw (KiB/s) : min=%5lu, max=%5lu, per=%3.2f%%, avg=%5.02f, stdev=%5.02f\n", min, max, p_of_agg, mean, dev);
440 static void show_thread_status(struct thread_data *td,
441 struct group_run_stats *rs)
443 double usr_cpu, sys_cpu;
444 unsigned long runtime;
445 double io_u_dist[FIO_IO_U_MAP_NR];
446 double io_u_lat[FIO_IO_U_LAT_NR];
449 if (!(td->io_bytes[0] + td->io_bytes[1]))
453 fprintf(f_out, "%s: (groupid=%d): err=%2d: pid=%d\n",td->name, td->groupid, td->error, td->pid);
455 fprintf(f_out, "%s: (groupid=%d): err=%2d (%s): pid=%d\n",td->name, td->groupid, td->error, td->verror, td->pid);
457 show_ddir_status(td, rs, td->ddir);
458 if (td->io_bytes[td->ddir ^ 1])
459 show_ddir_status(td, rs, td->ddir ^ 1);
461 runtime = mtime_since(&td->epoch, &td->end_time);
463 double runt = (double) runtime;
465 usr_cpu = (double) td->ts.usr_time * 100 / runt;
466 sys_cpu = (double) td->ts.sys_time * 100 / runt;
472 fprintf(f_out, " cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ts.ctx);
475 * Do depth distribution calculations
477 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
478 io_u_dist[i] = (double) td->io_u_map[i] / (double) td->total_io_u;
479 io_u_dist[i] *= 100.0;
482 fprintf(f_out, " IO depths : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3], io_u_dist[4], io_u_dist[5], io_u_dist[6]);
485 * Do latency distribution calculations
487 for (i = 0; i < FIO_IO_U_LAT_NR; i++) {
488 io_u_lat[i] = (double) td->io_u_lat[i] / (double) td->total_io_u;
489 io_u_lat[i] *= 100.0;
492 fprintf(f_out, " lat (msec): 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%, 32=%3.1f%%, 64=%3.1f%%, 128=%3.1f%%\n", io_u_lat[0], io_u_lat[1], io_u_lat[2], io_u_lat[3], io_u_lat[4], io_u_lat[5], io_u_lat[6]);
493 fprintf(f_out, " lat (msec): 256=%3.1f%%, 512=%3.1f%%, 1024=%3.1f%%, >=2048=%3.1f%%\n", io_u_lat[7], io_u_lat[8], io_u_lat[9], io_u_lat[10]);
496 fprintf(f_out, "%s\n", td->description);
499 static void show_ddir_status_terse(struct thread_data *td,
500 struct group_run_stats *rs, int ddir)
502 struct thread_stat *ts = &td->ts;
503 unsigned long min, max;
504 unsigned long long bw;
508 if (td->runtime[ddir])
509 bw = td->io_bytes[ddir] / td->runtime[ddir];
511 fprintf(f_out, ",%llu,%llu,%lu", td->io_bytes[ddir] >> 10, bw, td->runtime[ddir]);
513 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
514 fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
516 fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
518 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
519 fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
521 fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
523 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
526 p_of_agg = mean * 100 / (double) rs->agg[ddir];
527 fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", min, max, p_of_agg, mean, dev);
529 fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", 0UL, 0UL, 0.0, 0.0, 0.0);
534 static void show_thread_status_terse(struct thread_data *td,
535 struct group_run_stats *rs)
537 double usr_cpu, sys_cpu;
539 fprintf(f_out, "%s,%d,%d",td->name, td->groupid, td->error);
541 show_ddir_status_terse(td, rs, 0);
542 show_ddir_status_terse(td, rs, 1);
544 if (td->runtime[0] + td->runtime[1]) {
545 double runt = (double) (td->runtime[0] + td->runtime[1]);
547 usr_cpu = (double) td->ts.usr_time * 100 / runt;
548 sys_cpu = (double) td->ts.sys_time * 100 / runt;
554 fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ts.ctx);
557 void show_run_stats(void)
559 struct group_run_stats *runstats, *rs;
560 struct thread_data *td;
563 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
565 for (i = 0; i < groupid + 1; i++) {
568 memset(rs, 0, sizeof(*rs));
569 rs->min_bw[0] = rs->min_run[0] = ~0UL;
570 rs->min_bw[1] = rs->min_run[1] = ~0UL;
574 unsigned long long rbw, wbw;
576 rs = &runstats[td->groupid];
578 if (td->runtime[0] < rs->min_run[0] || !rs->min_run[0])
579 rs->min_run[0] = td->runtime[0];
580 if (td->runtime[0] > rs->max_run[0])
581 rs->max_run[0] = td->runtime[0];
582 if (td->runtime[1] < rs->min_run[1] || !rs->min_run[1])
583 rs->min_run[1] = td->runtime[1];
584 if (td->runtime[1] > rs->max_run[1])
585 rs->max_run[1] = td->runtime[1];
589 rbw = td->io_bytes[0] / (unsigned long long) td->runtime[0];
591 wbw = td->io_bytes[1] / (unsigned long long) td->runtime[1];
593 if (rbw < rs->min_bw[0])
595 if (wbw < rs->min_bw[1])
597 if (rbw > rs->max_bw[0])
599 if (wbw > rs->max_bw[1])
602 rs->io_kb[0] += td->io_bytes[0] >> 10;
603 rs->io_kb[1] += td->io_bytes[1] >> 10;
606 for (i = 0; i < groupid + 1; i++) {
610 rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
612 rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
616 * don't overwrite last signal output
622 rs = &runstats[td->groupid];
625 show_thread_status_terse(td, rs);
627 show_thread_status(td, rs);
631 for (i = 0; i < groupid + 1; i++)
632 show_group_stats(&runstats[i], i);
640 static inline void add_stat_sample(struct io_stat *is, unsigned long data)
645 if (data > is->max_val)
647 if (data < is->min_val)
650 delta = val - is->mean;
651 n = is->samples + 1.0;
652 is->mean += delta / n;
653 is->S += delta * (val - is->mean);
658 static void __add_log_sample(struct io_log *iolog, unsigned long val,
659 enum fio_ddir ddir, unsigned long time)
661 if (iolog->nr_samples == iolog->max_samples) {
662 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
664 iolog->log = realloc(iolog->log, new_size);
665 iolog->max_samples <<= 1;
668 iolog->log[iolog->nr_samples].val = val;
669 iolog->log[iolog->nr_samples].time = time;
670 iolog->log[iolog->nr_samples].ddir = ddir;
674 static void add_log_sample(struct thread_data *td, struct io_log *iolog,
675 unsigned long val, enum fio_ddir ddir)
677 __add_log_sample(iolog, val, ddir, mtime_since_now(&td->epoch));
680 void add_agg_sample(unsigned long val, enum fio_ddir ddir)
682 struct io_log *iolog = agg_io_log[ddir];
684 __add_log_sample(iolog, val, ddir, mtime_since_genesis());
687 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
690 struct thread_stat *ts = &td->ts;
692 add_stat_sample(&ts->clat_stat[ddir], msec);
695 add_log_sample(td, ts->clat_log, msec, ddir);
698 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
701 struct thread_stat *ts = &td->ts;
703 add_stat_sample(&ts->slat_stat[ddir], msec);
706 add_log_sample(td, ts->slat_log, msec, ddir);
709 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
712 struct thread_stat *ts = &td->ts;
713 unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t);
716 if (spent < td->bw_avg_time)
719 rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) / spent;
720 add_stat_sample(&ts->bw_stat[ddir], rate);
723 add_log_sample(td, ts->bw_log, rate, ddir);
725 fio_gettime(&ts->stat_sample_time[ddir], NULL);
726 ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir];