Update fio io engine version
[fio.git] / stat.c
CommitLineData
3c39a379
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1#include <stdio.h>
2#include <string.h>
3#include <sys/time.h>
4#include <sys/types.h>
5c4e1dbc 5#include <sys/stat.h>
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6#include <dirent.h>
7#include <libgen.h>
8#include <math.h>
9
10#include "fio.h"
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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{
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21 char postfix[] = { ' ', 'K', 'M', 'G', 'P', 'E' };
22 unsigned int thousand;
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23 char *buf;
24 int i;
25
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26 if (pow2)
27 thousand = 1024;
28 else
29 thousand = 1000;
30
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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) {
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41 if (i >= 1) {
42 buf[len] = postfix[i];
43 buf[len + 1] = '\0';
44 }
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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);
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55
56 return buf;
57}
58
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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);
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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{
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141 struct disk_util *du, *__du;
142 struct list_head *entry;
3c39a379 143
1188caf8 144 du = malloc(sizeof(*du));
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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
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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);
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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;
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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) {
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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)
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245{
246 struct stat st;
0bbab0e7 247 char foo[PATH_MAX], tmp[PATH_MAX];
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248 dev_t dev;
249 char *p;
250
53cdc686 251 if (!stat(f->file_name, &st)) {
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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);
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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;
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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;
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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");
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299 return;
300 }
0bbab0e7 301 strncpy(tmp, p, PATH_MAX - 1);
84585003 302 sprintf(foo, "%s", tmp);
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303 }
304
2dc1bbeb 305 if (td->o.ioscheduler && !td->sysfs_root)
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306 td->sysfs_root = strdup(foo);
307
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308 disk_util_add(dev, foo);
309}
310
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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
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317 (td->io_ops->flags & (FIO_DISKLESSIO | FIO_NODISKUTIL)))
318 return;
319
1c178180 320 for_each_file(td, f, i)
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321 __init_disk_util(td, f);
322}
323
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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
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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));
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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;
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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
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358 if (n > 1.0)
359 *dev = sqrt(is->S / (n - 1.0));
ef9c5c40 360 else
68704084 361 *dev = -1.0;
ef9c5c40 362
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363 return 1;
364}
365
366static void show_group_stats(struct group_run_stats *rs, int id)
367{
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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
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374 for (i = 0; i <= DDIR_WRITE; i++) {
375 if (!rs->max_run[i])
376 continue;
377
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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]);
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384
385 free(p1);
386 free(p2);
387 free(p3);
388 free(p4);
389 }
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390}
391
392static void show_disk_util(void)
393{
394 struct disk_util_stat *dus;
b4a6a59a 395 struct list_head *entry, *next;
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396 struct disk_util *du;
397 double util;
398
6d86144d 399 log_info("\nDisk stats (read/write):\n");
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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 }
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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 }
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421}
422
b3605062
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423#define ts_total_io_u(ts) \
424 ((ts)->total_io_u[0] + (ts)->total_io_u[1])
425
2270890c
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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);
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435 io_u_dist[i] *= 100.0;
436 }
437}
438
439static void stat_calc_lat(struct thread_stat *ts, double *io_u_lat)
440{
441 int i;
442
443 /*
444 * Do latency distribution calculations
445 */
446 for (i = 0; i < FIO_IO_U_LAT_NR; i++) {
b3605062 447 io_u_lat[i] = (double) ts->io_u_lat[i] / (double) ts_total_io_u(ts);
2270890c
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448 io_u_lat[i] *= 100.0;
449 }
450}
451
756867bd 452static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
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453 int ddir)
454{
3c9b60c1 455 const char *ddir_str[] = { "read ", "write" };
3c39a379 456 unsigned long min, max;
b3605062 457 unsigned long long bw, iops;
3c39a379 458 double mean, dev;
b3605062 459 char *io_p, *bw_p, *iops_p;
3c39a379 460
756867bd 461 if (!ts->runtime[ddir])
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462 return;
463
756867bd 464 bw = ts->io_bytes[ddir] / ts->runtime[ddir];
b3605062
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465 iops = (1000 * ts->total_io_u[ddir]) / ts->runtime[ddir];
466 io_p = num2str(ts->io_bytes[ddir] >> 10, 6, 1000, 1);
467 bw_p = num2str(bw, 6, 1000, 1);
468 iops_p = num2str(iops, 6, 1, 0);
dbe1125e 469
6d86144d 470 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
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471
472 free(io_p);
473 free(bw_p);
b3605062 474 free(iops_p);
3c39a379 475
079ad09b 476 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
6d86144d 477 log_info(" slat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
3c39a379 478
079ad09b 479 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
6d86144d 480 log_info(" clat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
3c39a379 481
079ad09b 482 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
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483 double p_of_agg;
484
485 p_of_agg = mean * 100 / (double) rs->agg[ddir];
6d86144d 486 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);
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487 }
488}
489
756867bd 490static void show_thread_status(struct thread_stat *ts,
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491 struct group_run_stats *rs)
492{
493 double usr_cpu, sys_cpu;
69008999 494 unsigned long runtime;
71619dc2 495 double io_u_dist[FIO_IO_U_MAP_NR];
ec118304 496 double io_u_lat[FIO_IO_U_LAT_NR];
3c39a379 497
756867bd 498 if (!(ts->io_bytes[0] + ts->io_bytes[1]))
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499 return;
500
756867bd 501 if (!ts->error)
6d86144d 502 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d\n", ts->name, ts->groupid, ts->members, ts->error, ts->pid);
6d663077 503 else
6d86144d 504 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 505
7bdce1bd 506 if (ts->description)
6d86144d 507 log_info(" Description : [%s]\n", ts->description);
7bdce1bd 508
756867bd
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509 if (ts->io_bytes[DDIR_READ])
510 show_ddir_status(rs, ts, DDIR_READ);
511 if (ts->io_bytes[DDIR_WRITE])
512 show_ddir_status(rs, ts, DDIR_WRITE);
3c39a379 513
756867bd 514 runtime = ts->total_run_time;
69008999 515 if (runtime) {
1e97cce9 516 double runt = (double) runtime;
3c39a379 517
756867bd
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518 usr_cpu = (double) ts->usr_time * 100 / runt;
519 sys_cpu = (double) ts->sys_time * 100 / runt;
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520 } else {
521 usr_cpu = 0;
522 sys_cpu = 0;
523 }
524
6d86144d 525 log_info(" cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, ts->ctx);
71619dc2 526
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527 stat_calc_dist(ts, io_u_dist);
528 stat_calc_lat(ts, io_u_lat);
71619dc2 529
6d86144d 530 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 531
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532 log_info(" lat (msec): 2=%3.1f%%, 4=%3.1f%%, 10=%3.1f%%, 20=%3.1f%%, 50=%3.1f%%, 100=%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]);
533 log_info(" lat (msec): 250=%3.1f%%, 500=%3.1f%%, 750=%3.1f%%, 1000=%3.1f%%, >=2000=%3.1f%%\n", io_u_lat[6], io_u_lat[7], io_u_lat[8], io_u_lat[9], io_u_lat[10]);
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534}
535
756867bd 536static void show_ddir_status_terse(struct thread_stat *ts,
c6ae0a5b
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537 struct group_run_stats *rs, int ddir)
538{
539 unsigned long min, max;
540 unsigned long long bw;
541 double mean, dev;
542
543 bw = 0;
756867bd
JA
544 if (ts->runtime[ddir])
545 bw = ts->io_bytes[ddir] / ts->runtime[ddir];
c6ae0a5b 546
6d86144d 547 log_info(";%llu;%llu;%lu", ts->io_bytes[ddir] >> 10, bw, ts->runtime[ddir]);
c6ae0a5b 548
079ad09b 549 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
6d86144d 550 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
c6ae0a5b 551 else
6d86144d 552 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
c6ae0a5b 553
079ad09b 554 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
6d86144d 555 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
c6ae0a5b 556 else
6d86144d 557 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
c6ae0a5b 558
079ad09b 559 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
c6ae0a5b
JA
560 double p_of_agg;
561
562 p_of_agg = mean * 100 / (double) rs->agg[ddir];
6d86144d 563 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
c6ae0a5b 564 } else
6d86144d 565 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
c6ae0a5b
JA
566}
567
568
756867bd 569static void show_thread_status_terse(struct thread_stat *ts,
c6ae0a5b
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570 struct group_run_stats *rs)
571{
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572 double io_u_dist[FIO_IO_U_MAP_NR];
573 double io_u_lat[FIO_IO_U_LAT_NR];
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574 double usr_cpu, sys_cpu;
575
6d86144d 576 log_info("%s;%d;%d", ts->name, ts->groupid, ts->error);
c6ae0a5b 577
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578 show_ddir_status_terse(ts, rs, 0);
579 show_ddir_status_terse(ts, rs, 1);
c6ae0a5b 580
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581 if (ts->total_run_time) {
582 double runt = (double) ts->total_run_time;
c6ae0a5b 583
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584 usr_cpu = (double) ts->usr_time * 100 / runt;
585 sys_cpu = (double) ts->sys_time * 100 / runt;
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586 } else {
587 usr_cpu = 0;
588 sys_cpu = 0;
589 }
590
6d86144d 591 log_info(";%f%%;%f%%;%lu", usr_cpu, sys_cpu, ts->ctx);
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592
593 stat_calc_dist(ts, io_u_dist);
594 stat_calc_lat(ts, io_u_lat);
595
6d86144d 596 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 597
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598 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%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]);
599 log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%", io_u_lat[6], io_u_lat[7], io_u_lat[8], io_u_lat[9], io_u_lat[10]);
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600
601 if (ts->description)
6d86144d 602 log_info(";%s", ts->description);
2270890c 603
6d86144d 604 log_info("\n");
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605}
606
197574e4 607static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
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608{
609 double mean, S;
610
611 dst->min_val = min(dst->min_val, src->min_val);
612 dst->max_val = max(dst->max_val, src->max_val);
613 dst->samples += src->samples;
614
615 /*
616 * Needs a new method for calculating stddev, we cannot just
617 * average them we do below for nr > 1
618 */
619 if (nr == 1) {
620 mean = src->mean;
621 S = src->S;
622 } else {
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623 mean = ((src->mean * (double) (nr - 1)) + dst->mean) / ((double) nr);
624 S = ((src->S * (double) (nr - 1)) + dst->S) / ((double) nr);
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625 }
626
627 dst->mean = mean;
628 dst->S = S;
629}
630
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631void show_run_stats(void)
632{
633 struct group_run_stats *runstats, *rs;
634 struct thread_data *td;
756867bd 635 struct thread_stat *threadstats, *ts;
197574e4 636 int i, j, k, l, nr_ts, last_ts, idx;
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637
638 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
639
640 for (i = 0; i < groupid + 1; i++) {
641 rs = &runstats[i];
642
643 memset(rs, 0, sizeof(*rs));
644 rs->min_bw[0] = rs->min_run[0] = ~0UL;
645 rs->min_bw[1] = rs->min_run[1] = ~0UL;
646 }
647
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648 /*
649 * find out how many threads stats we need. if group reporting isn't
650 * enabled, it's one-per-td.
651 */
652 nr_ts = 0;
653 last_ts = -1;
654 for_each_td(td, i) {
2dc1bbeb 655 if (!td->o.group_reporting) {
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656 nr_ts++;
657 continue;
658 }
659 if (last_ts == td->groupid)
660 continue;
661
662 last_ts = td->groupid;
663 nr_ts++;
664 }
665
666 threadstats = malloc(nr_ts * sizeof(struct thread_stat));
667
668 for (i = 0; i < nr_ts; i++) {
669 ts = &threadstats[i];
670
671 memset(ts, 0, sizeof(*ts));
de64df05 672 for (j = 0; j <= DDIR_WRITE; j++) {
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673 ts->clat_stat[j].min_val = -1UL;
674 ts->slat_stat[j].min_val = -1UL;
675 ts->bw_stat[j].min_val = -1UL;
676 }
7abd0e3a 677 ts->groupid = -1;
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678 }
679
680 j = 0;
681 last_ts = -1;
197574e4 682 idx = 0;
34572e28 683 for_each_td(td, i) {
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684 if (idx && (!td->o.group_reporting ||
685 (td->o.group_reporting && last_ts != td->groupid))) {
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686 idx = 0;
687 j++;
688 }
689
690 last_ts = td->groupid;
691
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692 ts = &threadstats[j];
693
197574e4 694 idx++;
6586ee89 695 ts->members++;
756867bd 696
7abd0e3a 697 if (ts->groupid == -1) {
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698 /*
699 * These are per-group shared already
700 */
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701 ts->name = td->o.name;
702 ts->description = td->o.description;
756867bd 703 ts->groupid = td->groupid;
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704
705 /*
706 * first pid in group, not very useful...
707 */
756867bd 708 ts->pid = td->pid;
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709 }
710
711 if (td->error && !ts->error) {
712 ts->error = td->error;
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713 ts->verror = td->verror;
714 }
715
de64df05 716 for (l = 0; l <= DDIR_WRITE; l++) {
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717 sum_stat(&ts->clat_stat[l], &td->ts.clat_stat[l], idx);
718 sum_stat(&ts->slat_stat[l], &td->ts.slat_stat[l], idx);
719 sum_stat(&ts->bw_stat[l], &td->ts.bw_stat[l], idx);
756867bd 720
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721 ts->stat_io_bytes[l] += td->ts.stat_io_bytes[l];
722 ts->io_bytes[l] += td->ts.io_bytes[l];
723
724 if (ts->runtime[l] < td->ts.runtime[l])
725 ts->runtime[l] = td->ts.runtime[l];
726 }
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727
728 ts->usr_time += td->ts.usr_time;
729 ts->sys_time += td->ts.sys_time;
730 ts->ctx += td->ts.ctx;
731
732 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
733 ts->io_u_map[k] += td->ts.io_u_map[k];
734 for (k = 0; k < FIO_IO_U_LAT_NR; k++)
735 ts->io_u_lat[k] += td->ts.io_u_lat[k];
736
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737 for (k = 0; k <= DDIR_WRITE; k++)
738 ts->total_io_u[k] += td->ts.total_io_u[k];
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739
740 ts->total_run_time += td->ts.total_run_time;
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741 }
742
743 for (i = 0; i < nr_ts; i++) {
94370ac4 744 unsigned long long bw;
3c39a379 745
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746 ts = &threadstats[i];
747 rs = &runstats[ts->groupid];
3c39a379 748
de64df05 749 for (j = 0; j <= DDIR_WRITE; j++) {
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750 if (!ts->runtime[j])
751 continue;
752 if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
753 rs->min_run[j] = ts->runtime[j];
754 if (ts->runtime[j] > rs->max_run[j])
755 rs->max_run[j] = ts->runtime[j];
756
757 bw = 0;
758 if (ts->runtime[j])
759 bw = ts->io_bytes[j] / (unsigned long long) ts->runtime[j];
760 if (bw < rs->min_bw[j])
761 rs->min_bw[j] = bw;
762 if (bw > rs->max_bw[j])
763 rs->max_bw[j] = bw;
764
765 rs->io_kb[j] += ts->io_bytes[j] >> 10;
766 }
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767 }
768
769 for (i = 0; i < groupid + 1; i++) {
770 rs = &runstats[i];
771
772 if (rs->max_run[0])
773 rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
774 if (rs->max_run[1])
775 rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
776 }
777
778 /*
779 * don't overwrite last signal output
780 */
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781 if (!terse_output)
782 printf("\n");
3c39a379 783
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784 for (i = 0; i < nr_ts; i++) {
785 ts = &threadstats[i];
786 rs = &runstats[ts->groupid];
3c39a379 787
c6ae0a5b 788 if (terse_output)
756867bd 789 show_thread_status_terse(ts, rs);
c6ae0a5b 790 else
756867bd 791 show_thread_status(ts, rs);
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792 }
793
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794 if (!terse_output) {
795 for (i = 0; i < groupid + 1; i++)
796 show_group_stats(&runstats[i], i);
3c39a379 797
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798 show_disk_util();
799 }
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800
801 free(runstats);
756867bd 802 free(threadstats);
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803}
804
68704084 805static inline void add_stat_sample(struct io_stat *is, unsigned long data)
3c39a379 806{
68704084 807 double val = data;
6660cc67 808 double delta;
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809
810 if (data > is->max_val)
811 is->max_val = data;
812 if (data < is->min_val)
813 is->min_val = data;
814
815 delta = val - is->mean;
6660cc67 816 is->mean += delta / (is->samples + 1.0);
68704084 817 is->S += delta * (val - is->mean);
3c39a379 818
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819 is->samples++;
820}
821
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822static void __add_log_sample(struct io_log *iolog, unsigned long val,
823 enum fio_ddir ddir, unsigned long time)
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824{
825 if (iolog->nr_samples == iolog->max_samples) {
826 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
827
828 iolog->log = realloc(iolog->log, new_size);
829 iolog->max_samples <<= 1;
830 }
831
832 iolog->log[iolog->nr_samples].val = val;
bb3884d8 833 iolog->log[iolog->nr_samples].time = time;
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834 iolog->log[iolog->nr_samples].ddir = ddir;
835 iolog->nr_samples++;
836}
837
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838static void add_log_sample(struct thread_data *td, struct io_log *iolog,
839 unsigned long val, enum fio_ddir ddir)
840{
841 __add_log_sample(iolog, val, ddir, mtime_since_now(&td->epoch));
842}
843
844void add_agg_sample(unsigned long val, enum fio_ddir ddir)
845{
846 struct io_log *iolog = agg_io_log[ddir];
847
848 __add_log_sample(iolog, val, ddir, mtime_since_genesis());
849}
850
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851void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
852 unsigned long msec)
3c39a379 853{
756867bd 854 struct thread_stat *ts = &td->ts;
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855
856 add_stat_sample(&ts->clat_stat[ddir], msec);
3c39a379 857
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858 if (ts->clat_log)
859 add_log_sample(td, ts->clat_log, msec, ddir);
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860}
861
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862void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
863 unsigned long msec)
3c39a379 864{
756867bd 865 struct thread_stat *ts = &td->ts;
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866
867 add_stat_sample(&ts->slat_stat[ddir], msec);
3c39a379 868
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869 if (ts->slat_log)
870 add_log_sample(td, ts->slat_log, msec, ddir);
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871}
872
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873void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
874 struct timeval *t)
3c39a379 875{
756867bd 876 struct thread_stat *ts = &td->ts;
079ad09b 877 unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t);
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878 unsigned long rate;
879
2dc1bbeb 880 if (spent < td->o.bw_avg_time)
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881 return;
882
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883 rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) / spent;
884 add_stat_sample(&ts->bw_stat[ddir], rate);
3c39a379 885
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886 if (ts->bw_log)
887 add_log_sample(td, ts->bw_log, rate, ddir);
3c39a379 888
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889 fio_gettime(&ts->stat_sample_time[ddir], NULL);
890 ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
3c39a379 891}