12 static struct itimerval itimer;
13 static struct list_head disk_list = LIST_HEAD_INIT(disk_list);
15 static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus)
22 f = fopen(du->path, "r");
26 p = fgets(line, sizeof(line), f);
32 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) {
41 static void update_io_tick_disk(struct disk_util *du)
43 struct disk_util_stat __dus, *dus, *ldus;
46 if (get_io_ticks(du, &__dus))
52 dus->sectors[0] += (__dus.sectors[0] - ldus->sectors[0]);
53 dus->sectors[1] += (__dus.sectors[1] - ldus->sectors[1]);
54 dus->ios[0] += (__dus.ios[0] - ldus->ios[0]);
55 dus->ios[1] += (__dus.ios[1] - ldus->ios[1]);
56 dus->merges[0] += (__dus.merges[0] - ldus->merges[0]);
57 dus->merges[1] += (__dus.merges[1] - ldus->merges[1]);
58 dus->ticks[0] += (__dus.ticks[0] - ldus->ticks[0]);
59 dus->ticks[1] += (__dus.ticks[1] - ldus->ticks[1]);
60 dus->io_ticks += (__dus.io_ticks - ldus->io_ticks);
61 dus->time_in_queue += (__dus.time_in_queue - ldus->time_in_queue);
63 fio_gettime(&t, NULL);
64 du->msec += mtime_since(&du->time, &t);
65 memcpy(&du->time, &t, sizeof(t));
66 memcpy(ldus, &__dus, sizeof(__dus));
69 void update_io_ticks(void)
71 struct list_head *entry;
74 list_for_each(entry, &disk_list) {
75 du = list_entry(entry, struct disk_util, list);
76 update_io_tick_disk(du);
80 static int disk_util_exists(dev_t dev)
82 struct list_head *entry;
85 list_for_each(entry, &disk_list) {
86 du = list_entry(entry, struct disk_util, list);
95 static void disk_util_add(dev_t dev, char *path)
97 struct disk_util *du, *__du;
98 struct list_head *entry;
100 du = malloc(sizeof(*du));
101 memset(du, 0, sizeof(*du));
102 INIT_LIST_HEAD(&du->list);
103 sprintf(du->path, "%s/stat", path);
104 du->name = strdup(basename(path));
107 list_for_each(entry, &disk_list) {
108 __du = list_entry(entry, struct disk_util, list);
110 if (!strcmp(du->name, __du->name)) {
117 fio_gettime(&du->time, NULL);
118 get_io_ticks(du, &du->last_dus);
120 list_add_tail(&du->list, &disk_list);
123 static int check_dev_match(dev_t dev, char *path)
125 unsigned int major, minor;
129 f = fopen(path, "r");
135 p = fgets(line, sizeof(line), f);
141 if (sscanf(p, "%u:%u", &major, &minor) != 2) {
146 if (((major << 8) | minor) == dev) {
155 static int find_block_dir(dev_t dev, char *path)
166 while ((dir = readdir(D)) != NULL) {
169 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
172 sprintf(full_path, "%s/%s", path, dir->d_name);
174 if (!strcmp(dir->d_name, "dev")) {
175 if (!check_dev_match(dev, full_path)) {
181 if (lstat(full_path, &st) == -1) {
186 if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode))
189 found = find_block_dir(dev, full_path);
191 strcpy(path, full_path);
200 void init_disk_util(struct thread_data *td)
204 char foo[PATH_MAX], tmp[PATH_MAX];
208 if (!td->do_disk_util || (td->io_ops->flags & (FIO_NETIO | FIO_NULLIO)))
212 * Just use the same file, they are on the same device.
215 if (!stat(f->file_name, &st)) {
216 if (S_ISBLK(st.st_mode))
222 * must be a file, open "." in that path
224 strncpy(foo, f->file_name, PATH_MAX - 1);
227 perror("disk util stat");
234 if (disk_util_exists(dev))
237 sprintf(foo, "/sys/block");
238 if (!find_block_dir(dev, foo))
242 * If there's a ../queue/ directory there, we are inside a partition.
243 * Check if that is the case and jump back. For loop/md/dm etc we
244 * are already in the right spot.
246 sprintf(tmp, "%s/../queue", foo);
247 if (!stat(tmp, &st)) {
249 sprintf(tmp, "%s/queue", p);
250 if (stat(tmp, &st)) {
251 log_err("unknown sysfs layout\n");
254 strncpy(tmp, p, PATH_MAX - 1);
255 sprintf(foo, "%s", tmp);
259 td->sysfs_root = strdup(foo);
261 disk_util_add(dev, foo);
264 void disk_util_timer_arm(void)
266 itimer.it_value.tv_sec = 0;
267 itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
268 setitimer(ITIMER_REAL, &itimer, NULL);
271 void update_rusage_stat(struct thread_data *td)
273 getrusage(RUSAGE_SELF, &td->ru_end);
275 td->usr_time += mtime_since(&td->ru_start.ru_utime, &td->ru_end.ru_utime);
276 td->sys_time += mtime_since(&td->ru_start.ru_stime, &td->ru_end.ru_stime);
277 td->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
279 memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
282 static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
283 double *mean, double *dev)
285 double n = is->samples;
287 if (is->samples == 0)
293 n = (double) is->samples;
297 *dev = sqrt(is->S / (n - 1.0));
304 static void show_group_stats(struct group_run_stats *rs, int id)
306 fprintf(f_out, "\nRun status group %d (all jobs):\n", id);
308 if (rs->max_run[DDIR_READ])
309 fprintf(f_out, " READ: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_kb[0] >> 10, rs->agg[0], rs->min_bw[0], rs->max_bw[0], rs->min_run[0], rs->max_run[0]);
310 if (rs->max_run[DDIR_WRITE])
311 fprintf(f_out, " WRITE: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_kb[1] >> 10, rs->agg[1], rs->min_bw[1], rs->max_bw[1], rs->min_run[1], rs->max_run[1]);
314 static void show_disk_util(void)
316 struct disk_util_stat *dus;
317 struct list_head *entry, *next;
318 struct disk_util *du;
321 fprintf(f_out, "\nDisk stats (read/write):\n");
323 list_for_each(entry, &disk_list) {
324 du = list_entry(entry, struct disk_util, list);
327 util = (double) 100 * du->dus.io_ticks / (double) du->msec;
331 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);
337 list_for_each_safe(entry, next, &disk_list) {
339 du = list_entry(entry, struct disk_util, list);
345 static void show_ddir_status(struct thread_data *td, struct group_run_stats *rs,
348 const char *ddir_str[] = { "read ", "write" };
349 unsigned long min, max;
350 unsigned long long bw;
353 if (!td->runtime[ddir])
356 bw = td->io_bytes[ddir] / td->runtime[ddir];
357 fprintf(f_out, " %s: io=%6lluMiB, bw=%6lluKiB/s, runt=%6lumsec\n", ddir_str[ddir], td->io_bytes[ddir] >> 20, bw, td->runtime[ddir]);
359 if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
360 fprintf(f_out, " slat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
362 if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
363 fprintf(f_out, " clat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
365 if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
368 p_of_agg = mean * 100 / (double) rs->agg[ddir];
369 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);
373 static void show_thread_status(struct thread_data *td,
374 struct group_run_stats *rs)
376 double usr_cpu, sys_cpu;
377 unsigned long runtime;
378 double io_u_dist[FIO_IO_U_MAP_NR];
381 if (!(td->io_bytes[0] + td->io_bytes[1]) && !td->error)
384 fprintf(f_out, "%s: (groupid=%d): err=%2d: pid=%d\n",td->name, td->groupid, td->error, td->pid);
386 show_ddir_status(td, rs, td->ddir);
387 if (td->io_bytes[td->ddir ^ 1])
388 show_ddir_status(td, rs, td->ddir ^ 1);
390 runtime = mtime_since(&td->epoch, &td->end_time);
392 double runt = (double) runtime;
394 usr_cpu = (double) td->usr_time * 100 / runt;
395 sys_cpu = (double) td->sys_time * 100 / runt;
401 fprintf(f_out, " cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ctx);
404 * Do depth distribution calculations
406 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
407 io_u_dist[i] = (double) td->io_u_map[i] / (double) td->total_io_u;
408 io_u_dist[i] *= 100.0;
411 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]);
414 fprintf(f_out, "%s\n", td->description);
417 static void show_ddir_status_terse(struct thread_data *td,
418 struct group_run_stats *rs, int ddir)
420 unsigned long min, max;
421 unsigned long long bw;
425 if (td->runtime[ddir])
426 bw = td->io_bytes[ddir] / td->runtime[ddir];
428 fprintf(f_out, ",%llu,%llu,%lu", td->io_bytes[ddir] >> 10, bw, td->runtime[ddir]);
430 if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
431 fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
433 fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
435 if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
436 fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
438 fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
440 if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
443 p_of_agg = mean * 100 / (double) rs->agg[ddir];
444 fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", min, max, p_of_agg, mean, dev);
446 fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", 0UL, 0UL, 0.0, 0.0, 0.0);
451 static void show_thread_status_terse(struct thread_data *td,
452 struct group_run_stats *rs)
454 double usr_cpu, sys_cpu;
456 fprintf(f_out, "%s,%d,%d",td->name, td->groupid, td->error);
458 show_ddir_status_terse(td, rs, 0);
459 show_ddir_status_terse(td, rs, 1);
461 if (td->runtime[0] + td->runtime[1]) {
462 double runt = (double) (td->runtime[0] + td->runtime[1]);
464 usr_cpu = (double) td->usr_time * 100 / runt;
465 sys_cpu = (double) td->sys_time * 100 / runt;
471 fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ctx);
474 void show_run_stats(void)
476 struct group_run_stats *runstats, *rs;
477 struct thread_data *td;
480 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
482 for (i = 0; i < groupid + 1; i++) {
485 memset(rs, 0, sizeof(*rs));
486 rs->min_bw[0] = rs->min_run[0] = ~0UL;
487 rs->min_bw[1] = rs->min_run[1] = ~0UL;
491 unsigned long long rbw, wbw;
494 fprintf(f_out, "%s: %s\n", td->name, td->verror);
498 rs = &runstats[td->groupid];
500 if (td->runtime[0] < rs->min_run[0] || !rs->min_run[0])
501 rs->min_run[0] = td->runtime[0];
502 if (td->runtime[0] > rs->max_run[0])
503 rs->max_run[0] = td->runtime[0];
504 if (td->runtime[1] < rs->min_run[1] || !rs->min_run[1])
505 rs->min_run[1] = td->runtime[1];
506 if (td->runtime[1] > rs->max_run[1])
507 rs->max_run[1] = td->runtime[1];
511 rbw = td->io_bytes[0] / (unsigned long long) td->runtime[0];
513 wbw = td->io_bytes[1] / (unsigned long long) td->runtime[1];
515 if (rbw < rs->min_bw[0])
517 if (wbw < rs->min_bw[1])
519 if (rbw > rs->max_bw[0])
521 if (wbw > rs->max_bw[1])
524 rs->io_kb[0] += td->io_bytes[0] >> 10;
525 rs->io_kb[1] += td->io_bytes[1] >> 10;
528 for (i = 0; i < groupid + 1; i++) {
532 rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
534 rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
538 * don't overwrite last signal output
544 rs = &runstats[td->groupid];
547 show_thread_status_terse(td, rs);
549 show_thread_status(td, rs);
553 for (i = 0; i < groupid + 1; i++)
554 show_group_stats(&runstats[i], i);
562 static inline void add_stat_sample(struct io_stat *is, unsigned long data)
567 if (data > is->max_val)
569 if (data < is->min_val)
572 delta = val - is->mean;
573 n = is->samples + 1.0;
574 is->mean += delta / n;
575 is->S += delta * (val - is->mean);
580 static void __add_log_sample(struct io_log *iolog, unsigned long val,
581 enum fio_ddir ddir, unsigned long time)
583 if (iolog->nr_samples == iolog->max_samples) {
584 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
586 iolog->log = realloc(iolog->log, new_size);
587 iolog->max_samples <<= 1;
590 iolog->log[iolog->nr_samples].val = val;
591 iolog->log[iolog->nr_samples].time = time;
592 iolog->log[iolog->nr_samples].ddir = ddir;
596 static void add_log_sample(struct thread_data *td, struct io_log *iolog,
597 unsigned long val, enum fio_ddir ddir)
599 __add_log_sample(iolog, val, ddir, mtime_since_now(&td->epoch));
602 void add_agg_sample(unsigned long val, enum fio_ddir ddir)
604 struct io_log *iolog = agg_io_log[ddir];
606 __add_log_sample(iolog, val, ddir, mtime_since_genesis());
609 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
612 add_stat_sample(&td->clat_stat[ddir], msec);
615 add_log_sample(td, td->clat_log, msec, ddir);
618 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
621 add_stat_sample(&td->slat_stat[ddir], msec);
624 add_log_sample(td, td->slat_log, msec, ddir);
627 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
630 unsigned long spent = mtime_since(&td->stat_sample_time[ddir], t);
633 if (spent < td->bw_avg_time)
636 rate = (td->this_io_bytes[ddir] - td->stat_io_bytes[ddir]) / spent;
637 add_stat_sample(&td->bw_stat[ddir], rate);
640 add_log_sample(td, td->bw_log, rate, ddir);
642 fio_gettime(&td->stat_sample_time[ddir], NULL);
643 td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];