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 = malloc(sizeof(*du));
99 memset(du, 0, sizeof(*du));
100 INIT_LIST_HEAD(&du->list);
101 sprintf(du->path, "%s/stat", path);
102 du->name = strdup(basename(path));
105 fio_gettime(&du->time, NULL);
106 get_io_ticks(du, &du->last_dus);
108 list_add_tail(&du->list, &disk_list);
111 static int check_dev_match(dev_t dev, char *path)
113 unsigned int major, minor;
117 f = fopen(path, "r");
123 p = fgets(line, sizeof(line), f);
129 if (sscanf(p, "%u:%u", &major, &minor) != 2) {
134 if (((major << 8) | minor) == dev) {
143 static int find_block_dir(dev_t dev, char *path)
154 while ((dir = readdir(D)) != NULL) {
157 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
160 sprintf(full_path, "%s/%s", path, dir->d_name);
162 if (!strcmp(dir->d_name, "dev")) {
163 if (!check_dev_match(dev, full_path)) {
169 if (lstat(full_path, &st) == -1) {
174 if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode))
177 found = find_block_dir(dev, full_path);
179 strcpy(path, full_path);
188 void init_disk_util(struct thread_data *td)
192 char foo[PATH_MAX], tmp[PATH_MAX];
196 if (!td->do_disk_util)
200 * Just use the same file, they are on the same device.
203 if (!stat(f->file_name, &st)) {
204 if (S_ISBLK(st.st_mode))
210 * must be a file, open "." in that path
212 strncpy(foo, f->file_name, PATH_MAX - 1);
215 perror("disk util stat");
222 if (disk_util_exists(dev))
225 sprintf(foo, "/sys/block");
226 if (!find_block_dir(dev, foo))
230 * If there's a ../queue/ directory there, we are inside a partition.
231 * Check if that is the case and jump back. For loop/md/dm etc we
232 * are already in the right spot.
234 sprintf(tmp, "%s/../queue", foo);
235 if (!stat(tmp, &st)) {
237 sprintf(tmp, "%s/queue", p);
238 if (stat(tmp, &st)) {
239 log_err("unknown sysfs layout\n");
242 strncpy(tmp, p, PATH_MAX - 1);
243 sprintf(foo, "%s", tmp);
247 td->sysfs_root = strdup(foo);
249 disk_util_add(dev, foo);
252 void disk_util_timer_arm(void)
254 itimer.it_value.tv_sec = 0;
255 itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
256 setitimer(ITIMER_REAL, &itimer, NULL);
259 void update_rusage_stat(struct thread_data *td)
261 getrusage(RUSAGE_SELF, &td->ru_end);
263 td->usr_time += mtime_since(&td->ru_start.ru_utime, &td->ru_end.ru_utime);
264 td->sys_time += mtime_since(&td->ru_start.ru_stime, &td->ru_end.ru_stime);
265 td->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
268 memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
271 static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
272 double *mean, double *dev)
276 if (is->samples == 0)
282 n = (double) is->samples;
283 *mean = (double) is->val / n;
284 *dev = sqrt(((double) is->val_sq - (*mean * *mean) / n) / (n - 1));
289 static void show_group_stats(struct group_run_stats *rs, int id)
291 fprintf(f_out, "\nRun status group %d (all jobs):\n", id);
293 if (rs->max_run[DDIR_READ])
294 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]);
295 if (rs->max_run[DDIR_WRITE])
296 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]);
299 static void show_disk_util(void)
301 struct disk_util_stat *dus;
302 struct list_head *entry, *next;
303 struct disk_util *du;
306 fprintf(f_out, "\nDisk stats (read/write):\n");
308 list_for_each(entry, &disk_list) {
309 du = list_entry(entry, struct disk_util, list);
312 util = (double) 100 * du->dus.io_ticks / (double) du->msec;
316 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);
322 list_for_each_safe(entry, next, &disk_list) {
324 du = list_entry(entry, struct disk_util, list);
330 static void show_ddir_status(struct thread_data *td, struct group_run_stats *rs,
333 const char *ddir_str[] = { "read ", "write" };
334 unsigned long min, max;
335 unsigned long long bw;
338 if (!td->runtime[ddir])
341 bw = td->io_bytes[ddir] / td->runtime[ddir];
342 fprintf(f_out, " %s: io=%6lluMiB, bw=%6lluKiB/s, runt=%6lumsec\n", ddir_str[ddir], td->io_bytes[ddir] >> 20, bw, td->runtime[ddir]);
344 if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
345 fprintf(f_out, " slat (msec): min=%5lu, max=%5lu, avg=%5.02f, dev=%5.02f\n", min, max, mean, dev);
347 if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
348 fprintf(f_out, " clat (msec): min=%5lu, max=%5lu, avg=%5.02f, dev=%5.02f\n", min, max, mean, dev);
350 if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
353 p_of_agg = mean * 100 / (double) rs->agg[ddir];
354 fprintf(f_out, " bw (KiB/s) : min=%5lu, max=%5lu, per=%3.2f%%, avg=%5.02f, dev=%5.02f\n", min, max, p_of_agg, mean, dev);
358 static void show_thread_status(struct thread_data *td,
359 struct group_run_stats *rs)
361 double usr_cpu, sys_cpu;
362 unsigned long runtime;
364 if (!(td->io_bytes[0] + td->io_bytes[1]) && !td->error)
367 fprintf(f_out, "%s: (groupid=%d): err=%2d:\n",td->name, td->groupid, td->error);
369 show_ddir_status(td, rs, td->ddir);
370 if (td->io_bytes[td->ddir ^ 1])
371 show_ddir_status(td, rs, td->ddir ^ 1);
373 runtime = mtime_since(&td->epoch, &td->end_time);
375 double runt = (double) runtime;
377 usr_cpu = (double) td->usr_time * 100 / runt;
378 sys_cpu = (double) td->sys_time * 100 / runt;
384 fprintf(f_out, " cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ctx);
387 static void show_ddir_status_terse(struct thread_data *td,
388 struct group_run_stats *rs, int ddir)
390 unsigned long min, max;
391 unsigned long long bw;
395 if (td->runtime[ddir])
396 bw = td->io_bytes[ddir] / td->runtime[ddir];
398 fprintf(f_out, ",%llu,%llu,%lu", td->io_bytes[ddir] >> 10, bw, td->runtime[ddir]);
400 if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
401 fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
403 fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
405 if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
406 fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
408 fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
410 if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
413 p_of_agg = mean * 100 / (double) rs->agg[ddir];
414 fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", min, max, p_of_agg, mean, dev);
416 fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", 0UL, 0UL, 0.0, 0.0, 0.0);
421 static void show_thread_status_terse(struct thread_data *td,
422 struct group_run_stats *rs)
424 double usr_cpu, sys_cpu;
426 fprintf(f_out, "%s,%d,%d",td->name, td->groupid, td->error);
428 show_ddir_status_terse(td, rs, 0);
429 show_ddir_status_terse(td, rs, 1);
431 if (td->runtime[0] + td->runtime[1]) {
432 double runt = (double) (td->runtime[0] + td->runtime[1]);
434 usr_cpu = (double) td->usr_time * 100 / runt;
435 sys_cpu = (double) td->sys_time * 100 / runt;
441 fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ctx);
444 void show_run_stats(void)
446 struct group_run_stats *runstats, *rs;
447 struct thread_data *td;
450 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
452 for (i = 0; i < groupid + 1; i++) {
455 memset(rs, 0, sizeof(*rs));
456 rs->min_bw[0] = rs->min_run[0] = ~0UL;
457 rs->min_bw[1] = rs->min_run[1] = ~0UL;
461 unsigned long long rbw, wbw;
464 fprintf(f_out, "%s: %s\n", td->name, td->verror);
468 rs = &runstats[td->groupid];
470 if (td->runtime[0] < rs->min_run[0] || !rs->min_run[0])
471 rs->min_run[0] = td->runtime[0];
472 if (td->runtime[0] > rs->max_run[0])
473 rs->max_run[0] = td->runtime[0];
474 if (td->runtime[1] < rs->min_run[1] || !rs->min_run[1])
475 rs->min_run[1] = td->runtime[1];
476 if (td->runtime[1] > rs->max_run[1])
477 rs->max_run[1] = td->runtime[1];
481 rbw = td->io_bytes[0] / (unsigned long long) td->runtime[0];
483 wbw = td->io_bytes[1] / (unsigned long long) td->runtime[1];
485 if (rbw < rs->min_bw[0])
487 if (wbw < rs->min_bw[1])
489 if (rbw > rs->max_bw[0])
491 if (wbw > rs->max_bw[1])
494 rs->io_kb[0] += td->io_bytes[0] >> 10;
495 rs->io_kb[1] += td->io_bytes[1] >> 10;
498 for (i = 0; i < groupid + 1; i++) {
502 rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
504 rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
508 * don't overwrite last signal output
514 rs = &runstats[td->groupid];
517 show_thread_status_terse(td, rs);
519 show_thread_status(td, rs);
523 for (i = 0; i < groupid + 1; i++)
524 show_group_stats(&runstats[i], i);
532 static inline void add_stat_sample(struct io_stat *is, unsigned long val)
534 if (val > is->max_val)
536 if (val < is->min_val)
540 is->val_sq += val * val;
544 static void add_log_sample(struct thread_data *td, struct io_log *iolog,
545 unsigned long val, enum fio_ddir ddir)
547 if (iolog->nr_samples == iolog->max_samples) {
548 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
550 iolog->log = realloc(iolog->log, new_size);
551 iolog->max_samples <<= 1;
554 iolog->log[iolog->nr_samples].val = val;
555 iolog->log[iolog->nr_samples].time = mtime_since_now(&td->epoch);
556 iolog->log[iolog->nr_samples].ddir = ddir;
560 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
563 add_stat_sample(&td->clat_stat[ddir], msec);
566 add_log_sample(td, td->clat_log, msec, ddir);
569 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
572 add_stat_sample(&td->slat_stat[ddir], msec);
575 add_log_sample(td, td->slat_log, msec, ddir);
578 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
581 unsigned long spent = mtime_since(&td->stat_sample_time[ddir], t);
584 if (spent < td->bw_avg_time)
587 rate = (td->this_io_bytes[ddir] - td->stat_io_bytes[ddir]) / spent;
588 add_stat_sample(&td->bw_stat[ddir], rate);
591 add_log_sample(td, td->bw_log, rate, ddir);
593 fio_gettime(&td->stat_sample_time[ddir], NULL);
594 td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];