Save a division, if delta is non-zero.
[fio.git] / stat.c
CommitLineData
3c39a379
JA
1#include <stdio.h>
2#include <string.h>
3#include <sys/time.h>
4#include <sys/types.h>
5c4e1dbc 5#include <sys/stat.h>
3c39a379
JA
6#include <dirent.h>
7#include <libgen.h>
8#include <math.h>
9
10#include "fio.h"
3c39a379
JA
11
12static struct itimerval itimer;
5c4e1dbc 13static struct list_head disk_list = LIST_HEAD_INIT(disk_list);
c0a6b0d8 14static dev_t last_dev;
3c39a379 15
dbe1125e 16/*
34403fb1 17 * Cheesy number->string conversion, complete with carry rounding error.
dbe1125e 18 */
b3605062 19static char *num2str(unsigned long num, int maxlen, int base, int pow2)
dbe1125e 20{
b3605062
JA
21 char postfix[] = { ' ', 'K', 'M', 'G', 'P', 'E' };
22 unsigned int thousand;
dbe1125e
JA
23 char *buf;
24 int i;
25
b3605062
JA
26 if (pow2)
27 thousand = 1024;
28 else
29 thousand = 1000;
30
dbe1125e
JA
31 buf = malloc(128);
32
33 for (i = 0; base > 1; i++)
34 base /= thousand;
35
36 do {
37 int len, carry = 0;
38
39 len = sprintf(buf, "%'lu", num);
40 if (len <= maxlen) {
b3605062
JA
41 if (i >= 1) {
42 buf[len] = postfix[i];
43 buf[len + 1] = '\0';
44 }
dbe1125e
JA
45 return buf;
46 }
47
48 if ((num % thousand) >= (thousand / 2))
49 carry = 1;
50
51 num /= thousand;
52 num += carry;
53 i++;
f3502ba2 54 } while (i <= 5);
dbe1125e
JA
55
56 return buf;
57}
58
3c39a379
JA
59static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus)
60{
61 unsigned in_flight;
62 char line[256];
63 FILE *f;
64 char *p;
65
66 f = fopen(du->path, "r");
67 if (!f)
68 return 1;
69
70 p = fgets(line, sizeof(line), f);
71 if (!p) {
72 fclose(f);
73 return 1;
74 }
75
76 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) {
77 fclose(f);
78 return 1;
79 }
80
81 fclose(f);
82 return 0;
83}
84
85static void update_io_tick_disk(struct disk_util *du)
86{
87 struct disk_util_stat __dus, *dus, *ldus;
88 struct timeval t;
89
90 if (get_io_ticks(du, &__dus))
91 return;
92
93 dus = &du->dus;
94 ldus = &du->last_dus;
95
96 dus->sectors[0] += (__dus.sectors[0] - ldus->sectors[0]);
97 dus->sectors[1] += (__dus.sectors[1] - ldus->sectors[1]);
98 dus->ios[0] += (__dus.ios[0] - ldus->ios[0]);
99 dus->ios[1] += (__dus.ios[1] - ldus->ios[1]);
100 dus->merges[0] += (__dus.merges[0] - ldus->merges[0]);
101 dus->merges[1] += (__dus.merges[1] - ldus->merges[1]);
102 dus->ticks[0] += (__dus.ticks[0] - ldus->ticks[0]);
103 dus->ticks[1] += (__dus.ticks[1] - ldus->ticks[1]);
104 dus->io_ticks += (__dus.io_ticks - ldus->io_ticks);
105 dus->time_in_queue += (__dus.time_in_queue - ldus->time_in_queue);
106
02bcaa8c 107 fio_gettime(&t, NULL);
3c39a379
JA
108 du->msec += mtime_since(&du->time, &t);
109 memcpy(&du->time, &t, sizeof(t));
110 memcpy(ldus, &__dus, sizeof(__dus));
111}
112
113void update_io_ticks(void)
114{
115 struct list_head *entry;
116 struct disk_util *du;
117
118 list_for_each(entry, &disk_list) {
119 du = list_entry(entry, struct disk_util, list);
120 update_io_tick_disk(du);
121 }
122}
123
124static int disk_util_exists(dev_t dev)
125{
126 struct list_head *entry;
127 struct disk_util *du;
128
129 list_for_each(entry, &disk_list) {
130 du = list_entry(entry, struct disk_util, list);
131
132 if (du->dev == dev)
133 return 1;
134 }
135
136 return 0;
137}
138
139static void disk_util_add(dev_t dev, char *path)
140{
1188caf8
JA
141 struct disk_util *du, *__du;
142 struct list_head *entry;
3c39a379 143
1188caf8 144 du = malloc(sizeof(*du));
3c39a379
JA
145 memset(du, 0, sizeof(*du));
146 INIT_LIST_HEAD(&du->list);
147 sprintf(du->path, "%s/stat", path);
148 du->name = strdup(basename(path));
149 du->dev = dev;
150
1188caf8
JA
151 list_for_each(entry, &disk_list) {
152 __du = list_entry(entry, struct disk_util, list);
153
154 if (!strcmp(du->name, __du->name)) {
155 free(du->name);
156 free(du);
157 return;
158 }
159 }
160
02bcaa8c 161 fio_gettime(&du->time, NULL);
3c39a379
JA
162 get_io_ticks(du, &du->last_dus);
163
164 list_add_tail(&du->list, &disk_list);
165}
166
167static int check_dev_match(dev_t dev, char *path)
168{
169 unsigned int major, minor;
170 char line[256], *p;
171 FILE *f;
172
173 f = fopen(path, "r");
174 if (!f) {
175 perror("open path");
176 return 1;
177 }
178
179 p = fgets(line, sizeof(line), f);
180 if (!p) {
181 fclose(f);
182 return 1;
183 }
184
185 if (sscanf(p, "%u:%u", &major, &minor) != 2) {
186 fclose(f);
187 return 1;
188 }
189
190 if (((major << 8) | minor) == dev) {
191 fclose(f);
192 return 0;
193 }
194
195 fclose(f);
196 return 1;
197}
198
199static int find_block_dir(dev_t dev, char *path)
200{
201 struct dirent *dir;
202 struct stat st;
203 int found = 0;
204 DIR *D;
205
206 D = opendir(path);
207 if (!D)
208 return 0;
209
210 while ((dir = readdir(D)) != NULL) {
211 char full_path[256];
212
213 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
214 continue;
3c39a379
JA
215
216 sprintf(full_path, "%s/%s", path, dir->d_name);
217
218 if (!strcmp(dir->d_name, "dev")) {
219 if (!check_dev_match(dev, full_path)) {
220 found = 1;
221 break;
222 }
223 }
224
3307d653 225 if (lstat(full_path, &st) == -1) {
3c39a379
JA
226 perror("stat");
227 break;
228 }
229
230 if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode))
231 continue;
232
233 found = find_block_dir(dev, full_path);
234 if (found) {
235 strcpy(path, full_path);
236 break;
237 }
238 }
239
240 closedir(D);
241 return found;
242}
243
55bc7fc0 244static void __init_disk_util(struct thread_data *td, struct fio_file *f)
3c39a379
JA
245{
246 struct stat st;
0bbab0e7 247 char foo[PATH_MAX], tmp[PATH_MAX];
3c39a379
JA
248 dev_t dev;
249 char *p;
250
53cdc686 251 if (!stat(f->file_name, &st)) {
3c39a379
JA
252 if (S_ISBLK(st.st_mode))
253 dev = st.st_rdev;
254 else
255 dev = st.st_dev;
256 } else {
257 /*
258 * must be a file, open "." in that path
259 */
0bbab0e7 260 strncpy(foo, f->file_name, PATH_MAX - 1);
3c39a379
JA
261 p = dirname(foo);
262 if (stat(p, &st)) {
263 perror("disk util stat");
264 return;
265 }
266
267 dev = st.st_dev;
268 }
269
270 if (disk_util_exists(dev))
271 return;
c0a6b0d8
JA
272
273 /*
274 * for an fs without a device, we will repeatedly stat through
275 * sysfs which can take oodles of time for thousands of files. so
276 * cache the last lookup and compare with that before going through
277 * everything again.
278 */
279 if (dev == last_dev)
280 return;
281
282 last_dev = dev;
3c39a379
JA
283
284 sprintf(foo, "/sys/block");
285 if (!find_block_dir(dev, foo))
286 return;
287
288 /*
289 * If there's a ../queue/ directory there, we are inside a partition.
290 * Check if that is the case and jump back. For loop/md/dm etc we
291 * are already in the right spot.
292 */
293 sprintf(tmp, "%s/../queue", foo);
294 if (!stat(tmp, &st)) {
295 p = dirname(foo);
296 sprintf(tmp, "%s/queue", p);
297 if (stat(tmp, &st)) {
3b70d7e5 298 log_err("unknown sysfs layout\n");
3c39a379
JA
299 return;
300 }
0bbab0e7 301 strncpy(tmp, p, PATH_MAX - 1);
84585003 302 sprintf(foo, "%s", tmp);
3c39a379
JA
303 }
304
2dc1bbeb 305 if (td->o.ioscheduler && !td->sysfs_root)
eecf272f
JA
306 td->sysfs_root = strdup(foo);
307
3c39a379
JA
308 disk_util_add(dev, foo);
309}
310
55bc7fc0
JA
311void init_disk_util(struct thread_data *td)
312{
313 struct fio_file *f;
314 unsigned int i;
315
2dc1bbeb 316 if (!td->o.do_disk_util ||
55bc7fc0
JA
317 (td->io_ops->flags & (FIO_DISKLESSIO | FIO_NODISKUTIL)))
318 return;
319
1c178180 320 for_each_file(td, f, i)
55bc7fc0
JA
321 __init_disk_util(td, f);
322}
323
3c39a379
JA
324void disk_util_timer_arm(void)
325{
326 itimer.it_value.tv_sec = 0;
327 itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
328 setitimer(ITIMER_REAL, &itimer, NULL);
329}
330
331void update_rusage_stat(struct thread_data *td)
332{
756867bd 333 struct thread_stat *ts = &td->ts;
3c39a379 334
079ad09b
JA
335 getrusage(RUSAGE_SELF, &ts->ru_end);
336
337 ts->usr_time += mtime_since(&ts->ru_start.ru_utime, &ts->ru_end.ru_utime);
338 ts->sys_time += mtime_since(&ts->ru_start.ru_stime, &ts->ru_end.ru_stime);
339 ts->ctx += ts->ru_end.ru_nvcsw + ts->ru_end.ru_nivcsw - (ts->ru_start.ru_nvcsw + ts->ru_start.ru_nivcsw);
3c39a379 340
079ad09b 341 memcpy(&ts->ru_start, &ts->ru_end, sizeof(ts->ru_end));
3c39a379
JA
342}
343
344static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
345 double *mean, double *dev)
346{
68704084 347 double n = is->samples;
3c39a379
JA
348
349 if (is->samples == 0)
350 return 0;
351
352 *min = is->min_val;
353 *max = is->max_val;
354
355 n = (double) is->samples;
68704084 356 *mean = is->mean;
e6d276f2 357
68704084
JA
358 if (n > 1.0)
359 *dev = sqrt(is->S / (n - 1.0));
ef9c5c40 360 else
68704084 361 *dev = -1.0;
ef9c5c40 362
3c39a379
JA
363 return 1;
364}
365
366static void show_group_stats(struct group_run_stats *rs, int id)
367{
dbe1125e
JA
368 char *p1, *p2, *p3, *p4;
369 const char *ddir_str[] = { " READ", " WRITE" };
370 int i;
371
6d86144d 372 log_info("\nRun status group %d (all jobs):\n", id);
3c39a379 373
dbe1125e
JA
374 for (i = 0; i <= DDIR_WRITE; i++) {
375 if (!rs->max_run[i])
376 continue;
377
b3605062
JA
378 p1 = num2str(rs->io_kb[i], 6, 1000, 1);
379 p2 = num2str(rs->agg[i], 6, 1000, 1);
380 p3 = num2str(rs->min_bw[i], 6, 1000, 1);
381 p4 = num2str(rs->max_bw[i], 6, 1000, 1);
dbe1125e 382
6d86144d 383 log_info("%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[i], rs->max_run[i]);
dbe1125e
JA
384
385 free(p1);
386 free(p2);
387 free(p3);
388 free(p4);
389 }
3c39a379
JA
390}
391
392static void show_disk_util(void)
393{
394 struct disk_util_stat *dus;
b4a6a59a 395 struct list_head *entry, *next;
3c39a379
JA
396 struct disk_util *du;
397 double util;
398
6d86144d 399 log_info("\nDisk stats (read/write):\n");
3c39a379
JA
400
401 list_for_each(entry, &disk_list) {
402 du = list_entry(entry, struct disk_util, list);
403 dus = &du->dus;
404
405 util = (double) 100 * du->dus.io_ticks / (double) du->msec;
406 if (util > 100.0)
407 util = 100.0;
408
6d86144d 409 log_info(" %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);
3c39a379 410 }
b4a6a59a
JA
411
412 /*
413 * now free the list
414 */
415 list_for_each_safe(entry, next, &disk_list) {
416 list_del(entry);
417 du = list_entry(entry, struct disk_util, list);
418 free(du->name);
419 free(du);
420 }
3c39a379
JA
421}
422
b3605062
JA
423#define ts_total_io_u(ts) \
424 ((ts)->total_io_u[0] + (ts)->total_io_u[1])
425
2270890c
JA
426static void stat_calc_dist(struct thread_stat *ts, double *io_u_dist)
427{
428 int i;
429
430 /*
431 * Do depth distribution calculations
432 */
433 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
b3605062 434 io_u_dist[i] = (double) ts->io_u_map[i] / (double) ts_total_io_u(ts);
2270890c 435 io_u_dist[i] *= 100.0;
d0f62ba3
JA
436 if (io_u_dist[i] < 0.1 && ts->io_u_map[i])
437 io_u_dist[i] = 0.1;
2270890c
JA
438 }
439}
440
441static void stat_calc_lat(struct thread_stat *ts, double *io_u_lat)
442{
443 int i;
444
445 /*
446 * Do latency distribution calculations
447 */
448 for (i = 0; i < FIO_IO_U_LAT_NR; i++) {
b3605062 449 io_u_lat[i] = (double) ts->io_u_lat[i] / (double) ts_total_io_u(ts);
2270890c 450 io_u_lat[i] *= 100.0;
d0f62ba3
JA
451 if (io_u_lat[i] < 0.01 && ts->io_u_lat[i])
452 io_u_lat[i] = 0.01;
2270890c
JA
453 }
454}
455
756867bd 456static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
3c39a379
JA
457 int ddir)
458{
3c9b60c1 459 const char *ddir_str[] = { "read ", "write" };
3c39a379 460 unsigned long min, max;
b3605062 461 unsigned long long bw, iops;
3c39a379 462 double mean, dev;
b3605062 463 char *io_p, *bw_p, *iops_p;
3c39a379 464
756867bd 465 if (!ts->runtime[ddir])
3c39a379
JA
466 return;
467
756867bd 468 bw = ts->io_bytes[ddir] / ts->runtime[ddir];
b3605062
JA
469 iops = (1000 * ts->total_io_u[ddir]) / ts->runtime[ddir];
470 io_p = num2str(ts->io_bytes[ddir] >> 10, 6, 1000, 1);
471 bw_p = num2str(bw, 6, 1000, 1);
472 iops_p = num2str(iops, 6, 1, 0);
dbe1125e 473
6d86144d 474 log_info(" %s: io=%siB, bw=%siB/s, iops=%s, runt=%6lumsec\n", ddir_str[ddir], io_p, bw_p, iops_p, ts->runtime[ddir]);
dbe1125e
JA
475
476 free(io_p);
477 free(bw_p);
b3605062 478 free(iops_p);
3c39a379 479
079ad09b 480 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
6d86144d 481 log_info(" slat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
3c39a379 482
079ad09b 483 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
6d86144d 484 log_info(" clat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
3c39a379 485
079ad09b 486 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
3c39a379
JA
487 double p_of_agg;
488
489 p_of_agg = mean * 100 / (double) rs->agg[ddir];
6d86144d 490 log_info(" bw (KiB/s) : min=%5lu, max=%5lu, per=%3.2f%%, avg=%5.02f, stdev=%5.02f\n", min, max, p_of_agg, mean, dev);
3c39a379
JA
491 }
492}
493
756867bd 494static void show_thread_status(struct thread_stat *ts,
3c39a379
JA
495 struct group_run_stats *rs)
496{
497 double usr_cpu, sys_cpu;
69008999 498 unsigned long runtime;
71619dc2 499 double io_u_dist[FIO_IO_U_MAP_NR];
ec118304 500 double io_u_lat[FIO_IO_U_LAT_NR];
3c39a379 501
756867bd 502 if (!(ts->io_bytes[0] + ts->io_bytes[1]))
3c39a379
JA
503 return;
504
756867bd 505 if (!ts->error)
6d86144d 506 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d\n", ts->name, ts->groupid, ts->members, ts->error, ts->pid);
6d663077 507 else
6d86144d 508 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d\n", ts->name, ts->groupid, ts->members, ts->error, ts->verror, ts->pid);
3c39a379 509
7bdce1bd 510 if (ts->description)
6d86144d 511 log_info(" Description : [%s]\n", ts->description);
7bdce1bd 512
756867bd
JA
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);
3c39a379 517
756867bd 518 runtime = ts->total_run_time;
69008999 519 if (runtime) {
1e97cce9 520 double runt = (double) runtime;
3c39a379 521
756867bd
JA
522 usr_cpu = (double) ts->usr_time * 100 / runt;
523 sys_cpu = (double) ts->sys_time * 100 / runt;
3c39a379
JA
524 } else {
525 usr_cpu = 0;
526 sys_cpu = 0;
527 }
528
6d86144d 529 log_info(" cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, ts->ctx);
71619dc2 530
2270890c
JA
531 stat_calc_dist(ts, io_u_dist);
532 stat_calc_lat(ts, io_u_lat);
71619dc2 533
6d86144d 534 log_info(" 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]);
61697c37 535
d0f62ba3
JA
536 log_info(" lat (msec): 2=%3.2f%%, 4=%3.2f%%, 10=%3.2f%%, 20=%3.2f%%, 50=%3.2f%%, 100=%3.2f%%\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]);
537 log_info(" lat (msec): 250=%3.2f%%, 500=%3.2f%%, 750=%3.2f%%, 1000=%3.2f%%, >=2000=%3.2f%%\n", io_u_lat[6], io_u_lat[7], io_u_lat[8], io_u_lat[9], io_u_lat[10]);
3c39a379
JA
538}
539
756867bd 540static void show_ddir_status_terse(struct thread_stat *ts,
c6ae0a5b
JA
541 struct group_run_stats *rs, int ddir)
542{
543 unsigned long min, max;
544 unsigned long long bw;
545 double mean, dev;
546
547 bw = 0;
756867bd
JA
548 if (ts->runtime[ddir])
549 bw = ts->io_bytes[ddir] / ts->runtime[ddir];
c6ae0a5b 550
6d86144d 551 log_info(";%llu;%llu;%lu", ts->io_bytes[ddir] >> 10, bw, ts->runtime[ddir]);
c6ae0a5b 552
079ad09b 553 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
6d86144d 554 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
c6ae0a5b 555 else
6d86144d 556 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
c6ae0a5b 557
079ad09b 558 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
6d86144d 559 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
c6ae0a5b 560 else
6d86144d 561 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
c6ae0a5b 562
079ad09b 563 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
c6ae0a5b
JA
564 double p_of_agg;
565
566 p_of_agg = mean * 100 / (double) rs->agg[ddir];
6d86144d 567 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
c6ae0a5b 568 } else
6d86144d 569 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
c6ae0a5b
JA
570}
571
572
756867bd 573static void show_thread_status_terse(struct thread_stat *ts,
c6ae0a5b
JA
574 struct group_run_stats *rs)
575{
2270890c
JA
576 double io_u_dist[FIO_IO_U_MAP_NR];
577 double io_u_lat[FIO_IO_U_LAT_NR];
c6ae0a5b
JA
578 double usr_cpu, sys_cpu;
579
6d86144d 580 log_info("%s;%d;%d", ts->name, ts->groupid, ts->error);
c6ae0a5b 581
756867bd
JA
582 show_ddir_status_terse(ts, rs, 0);
583 show_ddir_status_terse(ts, rs, 1);
c6ae0a5b 584
756867bd
JA
585 if (ts->total_run_time) {
586 double runt = (double) ts->total_run_time;
c6ae0a5b 587
756867bd
JA
588 usr_cpu = (double) ts->usr_time * 100 / runt;
589 sys_cpu = (double) ts->sys_time * 100 / runt;
c6ae0a5b
JA
590 } else {
591 usr_cpu = 0;
592 sys_cpu = 0;
593 }
594
6d86144d 595 log_info(";%f%%;%f%%;%lu", usr_cpu, sys_cpu, ts->ctx);
2270890c
JA
596
597 stat_calc_dist(ts, io_u_dist);
598 stat_calc_lat(ts, io_u_lat);
599
6d86144d 600 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%", 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]);
2270890c 601
d0f62ba3
JA
602 log_info(";%3.2f%%;%3.2f%%;%3.2f%%;%3.2f%%;%3.2f%%;%3.2f%%\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]);
603 log_info(";%3.2f%%;%3.2f%%;%3.2f%%;%3.2f%%;%3.2f%%", io_u_lat[6], io_u_lat[7], io_u_lat[8], io_u_lat[9], io_u_lat[10]);
2270890c
JA
604
605 if (ts->description)
6d86144d 606 log_info(";%s", ts->description);
2270890c 607
6d86144d 608 log_info("\n");
756867bd
JA
609}
610
197574e4 611static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
756867bd
JA
612{
613 double mean, S;
614
615 dst->min_val = min(dst->min_val, src->min_val);
616 dst->max_val = max(dst->max_val, src->max_val);
617 dst->samples += src->samples;
618
619 /*
620 * Needs a new method for calculating stddev, we cannot just
621 * average them we do below for nr > 1
622 */
623 if (nr == 1) {
624 mean = src->mean;
625 S = src->S;
626 } else {
c39cced6
JA
627 mean = ((src->mean * (double) (nr - 1)) + dst->mean) / ((double) nr);
628 S = ((src->S * (double) (nr - 1)) + dst->S) / ((double) nr);
756867bd
JA
629 }
630
631 dst->mean = mean;
632 dst->S = S;
633}
634
3c39a379
JA
635void show_run_stats(void)
636{
637 struct group_run_stats *runstats, *rs;
638 struct thread_data *td;
756867bd 639 struct thread_stat *threadstats, *ts;
197574e4 640 int i, j, k, l, nr_ts, last_ts, idx;
3c39a379
JA
641
642 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
643
644 for (i = 0; i < groupid + 1; i++) {
645 rs = &runstats[i];
646
647 memset(rs, 0, sizeof(*rs));
648 rs->min_bw[0] = rs->min_run[0] = ~0UL;
649 rs->min_bw[1] = rs->min_run[1] = ~0UL;
650 }
651
756867bd
JA
652 /*
653 * find out how many threads stats we need. if group reporting isn't
654 * enabled, it's one-per-td.
655 */
656 nr_ts = 0;
657 last_ts = -1;
658 for_each_td(td, i) {
2dc1bbeb 659 if (!td->o.group_reporting) {
756867bd
JA
660 nr_ts++;
661 continue;
662 }
663 if (last_ts == td->groupid)
664 continue;
665
666 last_ts = td->groupid;
667 nr_ts++;
668 }
669
670 threadstats = malloc(nr_ts * sizeof(struct thread_stat));
671
672 for (i = 0; i < nr_ts; i++) {
673 ts = &threadstats[i];
674
675 memset(ts, 0, sizeof(*ts));
de64df05 676 for (j = 0; j <= DDIR_WRITE; j++) {
197574e4
JA
677 ts->clat_stat[j].min_val = -1UL;
678 ts->slat_stat[j].min_val = -1UL;
679 ts->bw_stat[j].min_val = -1UL;
680 }
7abd0e3a 681 ts->groupid = -1;
756867bd
JA
682 }
683
684 j = 0;
685 last_ts = -1;
197574e4 686 idx = 0;
34572e28 687 for_each_td(td, i) {
2dc1bbeb
JA
688 if (idx && (!td->o.group_reporting ||
689 (td->o.group_reporting && last_ts != td->groupid))) {
7abd0e3a
JA
690 idx = 0;
691 j++;
692 }
693
694 last_ts = td->groupid;
695
756867bd
JA
696 ts = &threadstats[j];
697
197574e4 698 idx++;
6586ee89 699 ts->members++;
756867bd 700
7abd0e3a 701 if (ts->groupid == -1) {
2dc84ba7
JA
702 /*
703 * These are per-group shared already
704 */
2dc1bbeb
JA
705 ts->name = td->o.name;
706 ts->description = td->o.description;
756867bd 707 ts->groupid = td->groupid;
2dc84ba7
JA
708
709 /*
710 * first pid in group, not very useful...
711 */
756867bd 712 ts->pid = td->pid;
2dc84ba7
JA
713 }
714
715 if (td->error && !ts->error) {
716 ts->error = td->error;
756867bd
JA
717 ts->verror = td->verror;
718 }
719
de64df05 720 for (l = 0; l <= DDIR_WRITE; l++) {
197574e4
JA
721 sum_stat(&ts->clat_stat[l], &td->ts.clat_stat[l], idx);
722 sum_stat(&ts->slat_stat[l], &td->ts.slat_stat[l], idx);
723 sum_stat(&ts->bw_stat[l], &td->ts.bw_stat[l], idx);
756867bd 724
197574e4
JA
725 ts->stat_io_bytes[l] += td->ts.stat_io_bytes[l];
726 ts->io_bytes[l] += td->ts.io_bytes[l];
727
728 if (ts->runtime[l] < td->ts.runtime[l])
729 ts->runtime[l] = td->ts.runtime[l];
730 }
756867bd
JA
731
732 ts->usr_time += td->ts.usr_time;
733 ts->sys_time += td->ts.sys_time;
734 ts->ctx += td->ts.ctx;
735
736 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
737 ts->io_u_map[k] += td->ts.io_u_map[k];
738 for (k = 0; k < FIO_IO_U_LAT_NR; k++)
739 ts->io_u_lat[k] += td->ts.io_u_lat[k];
740
b3605062
JA
741 for (k = 0; k <= DDIR_WRITE; k++)
742 ts->total_io_u[k] += td->ts.total_io_u[k];
756867bd
JA
743
744 ts->total_run_time += td->ts.total_run_time;
756867bd
JA
745 }
746
747 for (i = 0; i < nr_ts; i++) {
94370ac4 748 unsigned long long bw;
3c39a379 749
756867bd
JA
750 ts = &threadstats[i];
751 rs = &runstats[ts->groupid];
3c39a379 752
de64df05 753 for (j = 0; j <= DDIR_WRITE; j++) {
94370ac4
JA
754 if (!ts->runtime[j])
755 continue;
756 if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
757 rs->min_run[j] = ts->runtime[j];
758 if (ts->runtime[j] > rs->max_run[j])
759 rs->max_run[j] = ts->runtime[j];
760
761 bw = 0;
762 if (ts->runtime[j])
763 bw = ts->io_bytes[j] / (unsigned long long) ts->runtime[j];
764 if (bw < rs->min_bw[j])
765 rs->min_bw[j] = bw;
766 if (bw > rs->max_bw[j])
767 rs->max_bw[j] = bw;
768
769 rs->io_kb[j] += ts->io_bytes[j] >> 10;
770 }
3c39a379
JA
771 }
772
773 for (i = 0; i < groupid + 1; i++) {
774 rs = &runstats[i];
775
776 if (rs->max_run[0])
777 rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
778 if (rs->max_run[1])
779 rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
780 }
781
782 /*
783 * don't overwrite last signal output
784 */
c6ae0a5b
JA
785 if (!terse_output)
786 printf("\n");
3c39a379 787
756867bd
JA
788 for (i = 0; i < nr_ts; i++) {
789 ts = &threadstats[i];
790 rs = &runstats[ts->groupid];
3c39a379 791
c6ae0a5b 792 if (terse_output)
756867bd 793 show_thread_status_terse(ts, rs);
c6ae0a5b 794 else
756867bd 795 show_thread_status(ts, rs);
3c39a379
JA
796 }
797
c6ae0a5b
JA
798 if (!terse_output) {
799 for (i = 0; i < groupid + 1; i++)
800 show_group_stats(&runstats[i], i);
3c39a379 801
c6ae0a5b
JA
802 show_disk_util();
803 }
eecf272f
JA
804
805 free(runstats);
756867bd 806 free(threadstats);
3c39a379
JA
807}
808
68704084 809static inline void add_stat_sample(struct io_stat *is, unsigned long data)
3c39a379 810{
68704084 811 double val = data;
6660cc67 812 double delta;
68704084
JA
813
814 if (data > is->max_val)
815 is->max_val = data;
816 if (data < is->min_val)
817 is->min_val = data;
818
819 delta = val - is->mean;
ef11d737
JA
820 if (delta) {
821 is->mean += delta / (is->samples + 1.0);
822 is->S += delta * (val - is->mean);
823 }
3c39a379 824
3c39a379
JA
825 is->samples++;
826}
827
bb3884d8
JA
828static void __add_log_sample(struct io_log *iolog, unsigned long val,
829 enum fio_ddir ddir, unsigned long time)
3c39a379
JA
830{
831 if (iolog->nr_samples == iolog->max_samples) {
832 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
833
834 iolog->log = realloc(iolog->log, new_size);
835 iolog->max_samples <<= 1;
836 }
837
838 iolog->log[iolog->nr_samples].val = val;
bb3884d8 839 iolog->log[iolog->nr_samples].time = time;
3c39a379
JA
840 iolog->log[iolog->nr_samples].ddir = ddir;
841 iolog->nr_samples++;
842}
843
bb3884d8
JA
844static void add_log_sample(struct thread_data *td, struct io_log *iolog,
845 unsigned long val, enum fio_ddir ddir)
846{
847 __add_log_sample(iolog, val, ddir, mtime_since_now(&td->epoch));
848}
849
850void add_agg_sample(unsigned long val, enum fio_ddir ddir)
851{
852 struct io_log *iolog = agg_io_log[ddir];
853
854 __add_log_sample(iolog, val, ddir, mtime_since_genesis());
855}
856
1e97cce9
JA
857void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
858 unsigned long msec)
3c39a379 859{
756867bd 860 struct thread_stat *ts = &td->ts;
079ad09b
JA
861
862 add_stat_sample(&ts->clat_stat[ddir], msec);
3c39a379 863
079ad09b
JA
864 if (ts->clat_log)
865 add_log_sample(td, ts->clat_log, msec, ddir);
3c39a379
JA
866}
867
1e97cce9
JA
868void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
869 unsigned long msec)
3c39a379 870{
756867bd 871 struct thread_stat *ts = &td->ts;
079ad09b
JA
872
873 add_stat_sample(&ts->slat_stat[ddir], msec);
3c39a379 874
079ad09b
JA
875 if (ts->slat_log)
876 add_log_sample(td, ts->slat_log, msec, ddir);
3c39a379
JA
877}
878
1e97cce9
JA
879void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
880 struct timeval *t)
3c39a379 881{
756867bd 882 struct thread_stat *ts = &td->ts;
079ad09b 883 unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t);
3c39a379
JA
884 unsigned long rate;
885
2dc1bbeb 886 if (spent < td->o.bw_avg_time)
3c39a379
JA
887 return;
888
079ad09b
JA
889 rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) / spent;
890 add_stat_sample(&ts->bw_stat[ddir], rate);
3c39a379 891
079ad09b
JA
892 if (ts->bw_log)
893 add_log_sample(td, ts->bw_log, rate, ddir);
3c39a379 894
079ad09b
JA
895 fio_gettime(&ts->stat_sample_time[ddir], NULL);
896 ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
3c39a379 897}