Move the iodepth_batch into td_io_queue() instead
[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
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16/*
17 * Cheasy number->string conversion, complete with carry rounding error.
18 */
19static char *num2str(unsigned long num, int maxlen, int base)
20{
21 /*
22 * could be passed in for 10^3 base, but every caller expects
23 * 2^10 base right now.
24 */
c8c51efd 25 const unsigned int thousand = 1024;
f3502ba2 26 char postfix[] = { 'K', 'M', 'G', 'P', 'E' };
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27 char *buf;
28 int i;
29
30 buf = malloc(128);
31
32 for (i = 0; base > 1; i++)
33 base /= thousand;
34
35 do {
36 int len, carry = 0;
37
38 len = sprintf(buf, "%'lu", num);
39 if (len <= maxlen) {
40 buf[len] = postfix[i];
41 buf[len + 1] = '\0';
42 return buf;
43 }
44
45 if ((num % thousand) >= (thousand / 2))
46 carry = 1;
47
48 num /= thousand;
49 num += carry;
50 i++;
f3502ba2 51 } while (i <= 5);
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52
53 return buf;
54}
55
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56static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus)
57{
58 unsigned in_flight;
59 char line[256];
60 FILE *f;
61 char *p;
62
63 f = fopen(du->path, "r");
64 if (!f)
65 return 1;
66
67 p = fgets(line, sizeof(line), f);
68 if (!p) {
69 fclose(f);
70 return 1;
71 }
72
73 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) {
74 fclose(f);
75 return 1;
76 }
77
78 fclose(f);
79 return 0;
80}
81
82static void update_io_tick_disk(struct disk_util *du)
83{
84 struct disk_util_stat __dus, *dus, *ldus;
85 struct timeval t;
86
87 if (get_io_ticks(du, &__dus))
88 return;
89
90 dus = &du->dus;
91 ldus = &du->last_dus;
92
93 dus->sectors[0] += (__dus.sectors[0] - ldus->sectors[0]);
94 dus->sectors[1] += (__dus.sectors[1] - ldus->sectors[1]);
95 dus->ios[0] += (__dus.ios[0] - ldus->ios[0]);
96 dus->ios[1] += (__dus.ios[1] - ldus->ios[1]);
97 dus->merges[0] += (__dus.merges[0] - ldus->merges[0]);
98 dus->merges[1] += (__dus.merges[1] - ldus->merges[1]);
99 dus->ticks[0] += (__dus.ticks[0] - ldus->ticks[0]);
100 dus->ticks[1] += (__dus.ticks[1] - ldus->ticks[1]);
101 dus->io_ticks += (__dus.io_ticks - ldus->io_ticks);
102 dus->time_in_queue += (__dus.time_in_queue - ldus->time_in_queue);
103
02bcaa8c 104 fio_gettime(&t, NULL);
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105 du->msec += mtime_since(&du->time, &t);
106 memcpy(&du->time, &t, sizeof(t));
107 memcpy(ldus, &__dus, sizeof(__dus));
108}
109
110void update_io_ticks(void)
111{
112 struct list_head *entry;
113 struct disk_util *du;
114
115 list_for_each(entry, &disk_list) {
116 du = list_entry(entry, struct disk_util, list);
117 update_io_tick_disk(du);
118 }
119}
120
121static int disk_util_exists(dev_t dev)
122{
123 struct list_head *entry;
124 struct disk_util *du;
125
126 list_for_each(entry, &disk_list) {
127 du = list_entry(entry, struct disk_util, list);
128
129 if (du->dev == dev)
130 return 1;
131 }
132
133 return 0;
134}
135
136static void disk_util_add(dev_t dev, char *path)
137{
1188caf8
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138 struct disk_util *du, *__du;
139 struct list_head *entry;
3c39a379 140
1188caf8 141 du = malloc(sizeof(*du));
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142 memset(du, 0, sizeof(*du));
143 INIT_LIST_HEAD(&du->list);
144 sprintf(du->path, "%s/stat", path);
145 du->name = strdup(basename(path));
146 du->dev = dev;
147
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148 list_for_each(entry, &disk_list) {
149 __du = list_entry(entry, struct disk_util, list);
150
151 if (!strcmp(du->name, __du->name)) {
152 free(du->name);
153 free(du);
154 return;
155 }
156 }
157
02bcaa8c 158 fio_gettime(&du->time, NULL);
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159 get_io_ticks(du, &du->last_dus);
160
161 list_add_tail(&du->list, &disk_list);
162}
163
164static int check_dev_match(dev_t dev, char *path)
165{
166 unsigned int major, minor;
167 char line[256], *p;
168 FILE *f;
169
170 f = fopen(path, "r");
171 if (!f) {
172 perror("open path");
173 return 1;
174 }
175
176 p = fgets(line, sizeof(line), f);
177 if (!p) {
178 fclose(f);
179 return 1;
180 }
181
182 if (sscanf(p, "%u:%u", &major, &minor) != 2) {
183 fclose(f);
184 return 1;
185 }
186
187 if (((major << 8) | minor) == dev) {
188 fclose(f);
189 return 0;
190 }
191
192 fclose(f);
193 return 1;
194}
195
196static int find_block_dir(dev_t dev, char *path)
197{
198 struct dirent *dir;
199 struct stat st;
200 int found = 0;
201 DIR *D;
202
203 D = opendir(path);
204 if (!D)
205 return 0;
206
207 while ((dir = readdir(D)) != NULL) {
208 char full_path[256];
209
210 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
211 continue;
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212
213 sprintf(full_path, "%s/%s", path, dir->d_name);
214
215 if (!strcmp(dir->d_name, "dev")) {
216 if (!check_dev_match(dev, full_path)) {
217 found = 1;
218 break;
219 }
220 }
221
3307d653 222 if (lstat(full_path, &st) == -1) {
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223 perror("stat");
224 break;
225 }
226
227 if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode))
228 continue;
229
230 found = find_block_dir(dev, full_path);
231 if (found) {
232 strcpy(path, full_path);
233 break;
234 }
235 }
236
237 closedir(D);
238 return found;
239}
240
241void init_disk_util(struct thread_data *td)
242{
53cdc686 243 struct fio_file *f;
3c39a379 244 struct stat st;
0bbab0e7 245 char foo[PATH_MAX], tmp[PATH_MAX];
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246 dev_t dev;
247 char *p;
248
4d9345ae 249 if (!td->do_disk_util || (td->io_ops->flags & (FIO_NETIO | FIO_NULLIO)))
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250 return;
251
53cdc686
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252 /*
253 * Just use the same file, they are on the same device.
254 */
255 f = &td->files[0];
256 if (!stat(f->file_name, &st)) {
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257 if (S_ISBLK(st.st_mode))
258 dev = st.st_rdev;
259 else
260 dev = st.st_dev;
261 } else {
262 /*
263 * must be a file, open "." in that path
264 */
0bbab0e7 265 strncpy(foo, f->file_name, PATH_MAX - 1);
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266 p = dirname(foo);
267 if (stat(p, &st)) {
268 perror("disk util stat");
269 return;
270 }
271
272 dev = st.st_dev;
273 }
274
275 if (disk_util_exists(dev))
276 return;
c0a6b0d8
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277
278 /*
279 * for an fs without a device, we will repeatedly stat through
280 * sysfs which can take oodles of time for thousands of files. so
281 * cache the last lookup and compare with that before going through
282 * everything again.
283 */
284 if (dev == last_dev)
285 return;
286
287 last_dev = dev;
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288
289 sprintf(foo, "/sys/block");
290 if (!find_block_dir(dev, foo))
291 return;
292
293 /*
294 * If there's a ../queue/ directory there, we are inside a partition.
295 * Check if that is the case and jump back. For loop/md/dm etc we
296 * are already in the right spot.
297 */
298 sprintf(tmp, "%s/../queue", foo);
299 if (!stat(tmp, &st)) {
300 p = dirname(foo);
301 sprintf(tmp, "%s/queue", p);
302 if (stat(tmp, &st)) {
3b70d7e5 303 log_err("unknown sysfs layout\n");
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304 return;
305 }
0bbab0e7 306 strncpy(tmp, p, PATH_MAX - 1);
84585003 307 sprintf(foo, "%s", tmp);
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308 }
309
eecf272f
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310 if (td->ioscheduler)
311 td->sysfs_root = strdup(foo);
312
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313 disk_util_add(dev, foo);
314}
315
316void disk_util_timer_arm(void)
317{
318 itimer.it_value.tv_sec = 0;
319 itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
320 setitimer(ITIMER_REAL, &itimer, NULL);
321}
322
323void update_rusage_stat(struct thread_data *td)
324{
079ad09b 325 struct thread_stat *ts = &td->ts;
3c39a379 326
079ad09b
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327 getrusage(RUSAGE_SELF, &ts->ru_end);
328
329 ts->usr_time += mtime_since(&ts->ru_start.ru_utime, &ts->ru_end.ru_utime);
330 ts->sys_time += mtime_since(&ts->ru_start.ru_stime, &ts->ru_end.ru_stime);
331 ts->ctx += ts->ru_end.ru_nvcsw + ts->ru_end.ru_nivcsw - (ts->ru_start.ru_nvcsw + ts->ru_start.ru_nivcsw);
3c39a379 332
079ad09b 333 memcpy(&ts->ru_start, &ts->ru_end, sizeof(ts->ru_end));
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334}
335
336static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
337 double *mean, double *dev)
338{
68704084 339 double n = is->samples;
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340
341 if (is->samples == 0)
342 return 0;
343
344 *min = is->min_val;
345 *max = is->max_val;
346
347 n = (double) is->samples;
68704084 348 *mean = is->mean;
e6d276f2 349
68704084
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350 if (n > 1.0)
351 *dev = sqrt(is->S / (n - 1.0));
ef9c5c40 352 else
68704084 353 *dev = -1.0;
ef9c5c40 354
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355 return 1;
356}
357
358static void show_group_stats(struct group_run_stats *rs, int id)
359{
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360 char *p1, *p2, *p3, *p4;
361 const char *ddir_str[] = { " READ", " WRITE" };
362 int i;
363
eb8bbf48 364 fprintf(f_out, "\nRun status group %d (all jobs):\n", id);
3c39a379 365
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366 for (i = 0; i <= DDIR_WRITE; i++) {
367 if (!rs->max_run[i])
368 continue;
369
370 p1 = num2str(rs->io_kb[i], 6, 1);
371 p2 = num2str(rs->agg[i], 6, 1);
372 p3 = num2str(rs->min_bw[i], 6, 1);
373 p4 = num2str(rs->max_bw[i], 6, 1);
374
375 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]);
376
377 free(p1);
378 free(p2);
379 free(p3);
380 free(p4);
381 }
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382}
383
384static void show_disk_util(void)
385{
386 struct disk_util_stat *dus;
b4a6a59a 387 struct list_head *entry, *next;
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388 struct disk_util *du;
389 double util;
390
eb8bbf48 391 fprintf(f_out, "\nDisk stats (read/write):\n");
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392
393 list_for_each(entry, &disk_list) {
394 du = list_entry(entry, struct disk_util, list);
395 dus = &du->dus;
396
397 util = (double) 100 * du->dus.io_ticks / (double) du->msec;
398 if (util > 100.0)
399 util = 100.0;
400
eb8bbf48 401 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);
3c39a379 402 }
b4a6a59a
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403
404 /*
405 * now free the list
406 */
407 list_for_each_safe(entry, next, &disk_list) {
408 list_del(entry);
409 du = list_entry(entry, struct disk_util, list);
410 free(du->name);
411 free(du);
412 }
3c39a379
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413}
414
415static void show_ddir_status(struct thread_data *td, struct group_run_stats *rs,
416 int ddir)
417{
3c9b60c1 418 const char *ddir_str[] = { "read ", "write" };
079ad09b 419 struct thread_stat *ts;
3c39a379
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420 unsigned long min, max;
421 unsigned long long bw;
422 double mean, dev;
dbe1125e 423 char *io_p, *bw_p;
3c39a379
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424
425 if (!td->runtime[ddir])
426 return;
427
428 bw = td->io_bytes[ddir] / td->runtime[ddir];
dbe1125e
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429 io_p = num2str(td->io_bytes[ddir] >> 10, 6, 1);
430 bw_p = num2str(bw, 6, 1);
431
432 fprintf(f_out, " %s: io=%siB, bw=%siB/s, runt=%6lumsec\n", ddir_str[ddir], io_p, bw_p, td->runtime[ddir]);
433
434 free(io_p);
435 free(bw_p);
3c39a379 436
079ad09b
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437 ts = &td->ts;
438 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
6104ddb6 439 fprintf(f_out, " slat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
3c39a379 440
079ad09b 441 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
6104ddb6 442 fprintf(f_out, " clat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
3c39a379 443
079ad09b 444 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
3c39a379
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445 double p_of_agg;
446
447 p_of_agg = mean * 100 / (double) rs->agg[ddir];
6104ddb6 448 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);
3c39a379
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449 }
450}
451
452static void show_thread_status(struct thread_data *td,
453 struct group_run_stats *rs)
454{
455 double usr_cpu, sys_cpu;
69008999 456 unsigned long runtime;
71619dc2 457 double io_u_dist[FIO_IO_U_MAP_NR];
ec118304 458 double io_u_lat[FIO_IO_U_LAT_NR];
71619dc2 459 int i;
3c39a379 460
6d663077 461 if (!(td->io_bytes[0] + td->io_bytes[1]))
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462 return;
463
6d663077
JA
464 if (!td->error)
465 fprintf(f_out, "%s: (groupid=%d): err=%2d: pid=%d\n",td->name, td->groupid, td->error, td->pid);
466 else
467 fprintf(f_out, "%s: (groupid=%d): err=%2d (%s): pid=%d\n",td->name, td->groupid, td->error, td->verror, td->pid);
3c39a379 468
413dd459
JA
469 if (td_read(td))
470 show_ddir_status(td, rs, DDIR_READ);
471 if (td_write(td))
472 show_ddir_status(td, rs, DDIR_WRITE);
3c39a379 473
69008999
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474 runtime = mtime_since(&td->epoch, &td->end_time);
475 if (runtime) {
1e97cce9 476 double runt = (double) runtime;
3c39a379 477
079ad09b
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478 usr_cpu = (double) td->ts.usr_time * 100 / runt;
479 sys_cpu = (double) td->ts.sys_time * 100 / runt;
3c39a379
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480 } else {
481 usr_cpu = 0;
482 sys_cpu = 0;
483 }
484
079ad09b 485 fprintf(f_out, " cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ts.ctx);
71619dc2
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486
487 /*
488 * Do depth distribution calculations
489 */
490 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
491 io_u_dist[i] = (double) td->io_u_map[i] / (double) td->total_io_u;
492 io_u_dist[i] *= 100.0;
493 }
494
5d458077 495 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]);
61697c37 496
ec118304
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497 /*
498 * Do latency distribution calculations
499 */
500 for (i = 0; i < FIO_IO_U_LAT_NR; i++) {
501 io_u_lat[i] = (double) td->io_u_lat[i] / (double) td->total_io_u;
502 io_u_lat[i] *= 100.0;
503 }
504
8abdce66
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505 fprintf(f_out, " 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]);
506 fprintf(f_out, " 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]);
ec118304 507
61697c37
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508 if (td->description)
509 fprintf(f_out, "%s\n", td->description);
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510}
511
c6ae0a5b
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512static void show_ddir_status_terse(struct thread_data *td,
513 struct group_run_stats *rs, int ddir)
514{
079ad09b 515 struct thread_stat *ts = &td->ts;
c6ae0a5b
JA
516 unsigned long min, max;
517 unsigned long long bw;
518 double mean, dev;
519
520 bw = 0;
521 if (td->runtime[ddir])
522 bw = td->io_bytes[ddir] / td->runtime[ddir];
523
524 fprintf(f_out, ",%llu,%llu,%lu", td->io_bytes[ddir] >> 10, bw, td->runtime[ddir]);
525
079ad09b 526 if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
c6ae0a5b
JA
527 fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
528 else
529 fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
530
079ad09b 531 if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
c6ae0a5b
JA
532 fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
533 else
534 fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
535
079ad09b 536 if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
c6ae0a5b
JA
537 double p_of_agg;
538
539 p_of_agg = mean * 100 / (double) rs->agg[ddir];
540 fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", min, max, p_of_agg, mean, dev);
541 } else
542 fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", 0UL, 0UL, 0.0, 0.0, 0.0);
543
544}
545
546
547static void show_thread_status_terse(struct thread_data *td,
548 struct group_run_stats *rs)
549{
550 double usr_cpu, sys_cpu;
551
552 fprintf(f_out, "%s,%d,%d",td->name, td->groupid, td->error);
553
554 show_ddir_status_terse(td, rs, 0);
555 show_ddir_status_terse(td, rs, 1);
556
557 if (td->runtime[0] + td->runtime[1]) {
1e97cce9 558 double runt = (double) (td->runtime[0] + td->runtime[1]);
c6ae0a5b 559
079ad09b
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560 usr_cpu = (double) td->ts.usr_time * 100 / runt;
561 sys_cpu = (double) td->ts.sys_time * 100 / runt;
c6ae0a5b
JA
562 } else {
563 usr_cpu = 0;
564 sys_cpu = 0;
565 }
566
079ad09b 567 fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ts.ctx);
c6ae0a5b
JA
568}
569
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570void show_run_stats(void)
571{
572 struct group_run_stats *runstats, *rs;
573 struct thread_data *td;
574 int i;
575
576 runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
577
578 for (i = 0; i < groupid + 1; i++) {
579 rs = &runstats[i];
580
581 memset(rs, 0, sizeof(*rs));
582 rs->min_bw[0] = rs->min_run[0] = ~0UL;
583 rs->min_bw[1] = rs->min_run[1] = ~0UL;
584 }
585
34572e28 586 for_each_td(td, i) {
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587 unsigned long long rbw, wbw;
588
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589 rs = &runstats[td->groupid];
590
591 if (td->runtime[0] < rs->min_run[0] || !rs->min_run[0])
592 rs->min_run[0] = td->runtime[0];
593 if (td->runtime[0] > rs->max_run[0])
594 rs->max_run[0] = td->runtime[0];
595 if (td->runtime[1] < rs->min_run[1] || !rs->min_run[1])
596 rs->min_run[1] = td->runtime[1];
597 if (td->runtime[1] > rs->max_run[1])
598 rs->max_run[1] = td->runtime[1];
599
600 rbw = wbw = 0;
601 if (td->runtime[0])
602 rbw = td->io_bytes[0] / (unsigned long long) td->runtime[0];
603 if (td->runtime[1])
604 wbw = td->io_bytes[1] / (unsigned long long) td->runtime[1];
605
606 if (rbw < rs->min_bw[0])
607 rs->min_bw[0] = rbw;
608 if (wbw < rs->min_bw[1])
609 rs->min_bw[1] = wbw;
610 if (rbw > rs->max_bw[0])
611 rs->max_bw[0] = rbw;
612 if (wbw > rs->max_bw[1])
613 rs->max_bw[1] = wbw;
614
615 rs->io_kb[0] += td->io_bytes[0] >> 10;
616 rs->io_kb[1] += td->io_bytes[1] >> 10;
617 }
618
619 for (i = 0; i < groupid + 1; i++) {
620 rs = &runstats[i];
621
622 if (rs->max_run[0])
623 rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
624 if (rs->max_run[1])
625 rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
626 }
627
628 /*
629 * don't overwrite last signal output
630 */
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631 if (!terse_output)
632 printf("\n");
3c39a379 633
34572e28 634 for_each_td(td, i) {
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635 rs = &runstats[td->groupid];
636
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637 if (terse_output)
638 show_thread_status_terse(td, rs);
639 else
640 show_thread_status(td, rs);
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641 }
642
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643 if (!terse_output) {
644 for (i = 0; i < groupid + 1; i++)
645 show_group_stats(&runstats[i], i);
3c39a379 646
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647 show_disk_util();
648 }
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649
650 free(runstats);
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651}
652
68704084 653static inline void add_stat_sample(struct io_stat *is, unsigned long data)
3c39a379 654{
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655 double val = data;
656 double delta, n;
657
658 if (data > is->max_val)
659 is->max_val = data;
660 if (data < is->min_val)
661 is->min_val = data;
662
663 delta = val - is->mean;
664 n = is->samples + 1.0;
665 is->mean += delta / n;
666 is->S += delta * (val - is->mean);
3c39a379 667
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668 is->samples++;
669}
670
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671static void __add_log_sample(struct io_log *iolog, unsigned long val,
672 enum fio_ddir ddir, unsigned long time)
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673{
674 if (iolog->nr_samples == iolog->max_samples) {
675 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
676
677 iolog->log = realloc(iolog->log, new_size);
678 iolog->max_samples <<= 1;
679 }
680
681 iolog->log[iolog->nr_samples].val = val;
bb3884d8 682 iolog->log[iolog->nr_samples].time = time;
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683 iolog->log[iolog->nr_samples].ddir = ddir;
684 iolog->nr_samples++;
685}
686
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687static void add_log_sample(struct thread_data *td, struct io_log *iolog,
688 unsigned long val, enum fio_ddir ddir)
689{
690 __add_log_sample(iolog, val, ddir, mtime_since_now(&td->epoch));
691}
692
693void add_agg_sample(unsigned long val, enum fio_ddir ddir)
694{
695 struct io_log *iolog = agg_io_log[ddir];
696
697 __add_log_sample(iolog, val, ddir, mtime_since_genesis());
698}
699
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700void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
701 unsigned long msec)
3c39a379 702{
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703 struct thread_stat *ts = &td->ts;
704
705 add_stat_sample(&ts->clat_stat[ddir], msec);
3c39a379 706
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707 if (ts->clat_log)
708 add_log_sample(td, ts->clat_log, msec, ddir);
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709}
710
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711void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
712 unsigned long msec)
3c39a379 713{
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714 struct thread_stat *ts = &td->ts;
715
716 add_stat_sample(&ts->slat_stat[ddir], msec);
3c39a379 717
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718 if (ts->slat_log)
719 add_log_sample(td, ts->slat_log, msec, ddir);
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720}
721
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722void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
723 struct timeval *t)
3c39a379 724{
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725 struct thread_stat *ts = &td->ts;
726 unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t);
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727 unsigned long rate;
728
729 if (spent < td->bw_avg_time)
730 return;
731
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732 rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) / spent;
733 add_stat_sample(&ts->bw_stat[ddir], rate);
3c39a379 734
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735 if (ts->bw_log)
736 add_log_sample(td, ts->bw_log, rate, ddir);
3c39a379 737
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738 fio_gettime(&ts->stat_sample_time[ddir], NULL);
739 ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
3c39a379 740}