Commit | Line | Data |
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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 | |
12 | static struct itimerval itimer; | |
5c4e1dbc | 13 | static struct list_head disk_list = LIST_HEAD_INIT(disk_list); |
3c39a379 JA |
14 | |
15 | static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus) | |
16 | { | |
17 | unsigned in_flight; | |
18 | char line[256]; | |
19 | FILE *f; | |
20 | char *p; | |
21 | ||
22 | f = fopen(du->path, "r"); | |
23 | if (!f) | |
24 | return 1; | |
25 | ||
26 | p = fgets(line, sizeof(line), f); | |
27 | if (!p) { | |
28 | fclose(f); | |
29 | return 1; | |
30 | } | |
31 | ||
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) { | |
33 | fclose(f); | |
34 | return 1; | |
35 | } | |
36 | ||
37 | fclose(f); | |
38 | return 0; | |
39 | } | |
40 | ||
41 | static void update_io_tick_disk(struct disk_util *du) | |
42 | { | |
43 | struct disk_util_stat __dus, *dus, *ldus; | |
44 | struct timeval t; | |
45 | ||
46 | if (get_io_ticks(du, &__dus)) | |
47 | return; | |
48 | ||
49 | dus = &du->dus; | |
50 | ldus = &du->last_dus; | |
51 | ||
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); | |
62 | ||
63 | gettimeofday(&t, NULL); | |
64 | du->msec += mtime_since(&du->time, &t); | |
65 | memcpy(&du->time, &t, sizeof(t)); | |
66 | memcpy(ldus, &__dus, sizeof(__dus)); | |
67 | } | |
68 | ||
69 | void update_io_ticks(void) | |
70 | { | |
71 | struct list_head *entry; | |
72 | struct disk_util *du; | |
73 | ||
74 | list_for_each(entry, &disk_list) { | |
75 | du = list_entry(entry, struct disk_util, list); | |
76 | update_io_tick_disk(du); | |
77 | } | |
78 | } | |
79 | ||
80 | static int disk_util_exists(dev_t dev) | |
81 | { | |
82 | struct list_head *entry; | |
83 | struct disk_util *du; | |
84 | ||
85 | list_for_each(entry, &disk_list) { | |
86 | du = list_entry(entry, struct disk_util, list); | |
87 | ||
88 | if (du->dev == dev) | |
89 | return 1; | |
90 | } | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static void disk_util_add(dev_t dev, char *path) | |
96 | { | |
97 | struct disk_util *du = malloc(sizeof(*du)); | |
98 | ||
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)); | |
103 | du->dev = dev; | |
104 | ||
105 | gettimeofday(&du->time, NULL); | |
106 | get_io_ticks(du, &du->last_dus); | |
107 | ||
108 | list_add_tail(&du->list, &disk_list); | |
109 | } | |
110 | ||
111 | static int check_dev_match(dev_t dev, char *path) | |
112 | { | |
113 | unsigned int major, minor; | |
114 | char line[256], *p; | |
115 | FILE *f; | |
116 | ||
117 | f = fopen(path, "r"); | |
118 | if (!f) { | |
119 | perror("open path"); | |
120 | return 1; | |
121 | } | |
122 | ||
123 | p = fgets(line, sizeof(line), f); | |
124 | if (!p) { | |
125 | fclose(f); | |
126 | return 1; | |
127 | } | |
128 | ||
129 | if (sscanf(p, "%u:%u", &major, &minor) != 2) { | |
130 | fclose(f); | |
131 | return 1; | |
132 | } | |
133 | ||
134 | if (((major << 8) | minor) == dev) { | |
135 | fclose(f); | |
136 | return 0; | |
137 | } | |
138 | ||
139 | fclose(f); | |
140 | return 1; | |
141 | } | |
142 | ||
143 | static int find_block_dir(dev_t dev, char *path) | |
144 | { | |
145 | struct dirent *dir; | |
146 | struct stat st; | |
147 | int found = 0; | |
148 | DIR *D; | |
149 | ||
150 | D = opendir(path); | |
151 | if (!D) | |
152 | return 0; | |
153 | ||
154 | while ((dir = readdir(D)) != NULL) { | |
155 | char full_path[256]; | |
156 | ||
157 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) | |
158 | continue; | |
3c39a379 JA |
159 | |
160 | sprintf(full_path, "%s/%s", path, dir->d_name); | |
161 | ||
162 | if (!strcmp(dir->d_name, "dev")) { | |
163 | if (!check_dev_match(dev, full_path)) { | |
164 | found = 1; | |
165 | break; | |
166 | } | |
167 | } | |
168 | ||
3307d653 | 169 | if (lstat(full_path, &st) == -1) { |
3c39a379 JA |
170 | perror("stat"); |
171 | break; | |
172 | } | |
173 | ||
174 | if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode)) | |
175 | continue; | |
176 | ||
177 | found = find_block_dir(dev, full_path); | |
178 | if (found) { | |
179 | strcpy(path, full_path); | |
180 | break; | |
181 | } | |
182 | } | |
183 | ||
184 | closedir(D); | |
185 | return found; | |
186 | } | |
187 | ||
188 | void init_disk_util(struct thread_data *td) | |
189 | { | |
190 | struct stat st; | |
191 | char foo[256], tmp[256]; | |
192 | dev_t dev; | |
193 | char *p; | |
194 | ||
195 | if (!td->do_disk_util) | |
196 | return; | |
197 | ||
198 | if (!stat(td->file_name, &st)) { | |
199 | if (S_ISBLK(st.st_mode)) | |
200 | dev = st.st_rdev; | |
201 | else | |
202 | dev = st.st_dev; | |
203 | } else { | |
204 | /* | |
205 | * must be a file, open "." in that path | |
206 | */ | |
207 | strcpy(foo, td->file_name); | |
208 | p = dirname(foo); | |
209 | if (stat(p, &st)) { | |
210 | perror("disk util stat"); | |
211 | return; | |
212 | } | |
213 | ||
214 | dev = st.st_dev; | |
215 | } | |
216 | ||
217 | if (disk_util_exists(dev)) | |
218 | return; | |
219 | ||
220 | sprintf(foo, "/sys/block"); | |
221 | if (!find_block_dir(dev, foo)) | |
222 | return; | |
223 | ||
224 | /* | |
225 | * If there's a ../queue/ directory there, we are inside a partition. | |
226 | * Check if that is the case and jump back. For loop/md/dm etc we | |
227 | * are already in the right spot. | |
228 | */ | |
229 | sprintf(tmp, "%s/../queue", foo); | |
230 | if (!stat(tmp, &st)) { | |
231 | p = dirname(foo); | |
232 | sprintf(tmp, "%s/queue", p); | |
233 | if (stat(tmp, &st)) { | |
3b70d7e5 | 234 | log_err("unknown sysfs layout\n"); |
3c39a379 JA |
235 | return; |
236 | } | |
237 | sprintf(foo, "%s", p); | |
238 | } | |
239 | ||
240 | td->sysfs_root = strdup(foo); | |
241 | disk_util_add(dev, foo); | |
242 | } | |
243 | ||
244 | void disk_util_timer_arm(void) | |
245 | { | |
246 | itimer.it_value.tv_sec = 0; | |
247 | itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000; | |
248 | setitimer(ITIMER_REAL, &itimer, NULL); | |
249 | } | |
250 | ||
251 | void update_rusage_stat(struct thread_data *td) | |
252 | { | |
253 | if (!(td->runtime[0] + td->runtime[1])) | |
254 | return; | |
255 | ||
256 | getrusage(RUSAGE_SELF, &td->ru_end); | |
257 | ||
258 | td->usr_time += mtime_since(&td->ru_start.ru_utime, &td->ru_end.ru_utime); | |
259 | td->sys_time += mtime_since(&td->ru_start.ru_stime, &td->ru_end.ru_stime); | |
260 | td->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw); | |
261 | ||
262 | ||
263 | memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end)); | |
264 | } | |
265 | ||
266 | static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max, | |
267 | double *mean, double *dev) | |
268 | { | |
269 | double n; | |
270 | ||
271 | if (is->samples == 0) | |
272 | return 0; | |
273 | ||
274 | *min = is->min_val; | |
275 | *max = is->max_val; | |
276 | ||
277 | n = (double) is->samples; | |
278 | *mean = (double) is->val / n; | |
279 | *dev = sqrt(((double) is->val_sq - (*mean * *mean) / n) / (n - 1)); | |
3c39a379 JA |
280 | |
281 | return 1; | |
282 | } | |
283 | ||
284 | static void show_group_stats(struct group_run_stats *rs, int id) | |
285 | { | |
eb8bbf48 | 286 | fprintf(f_out, "\nRun status group %d (all jobs):\n", id); |
3c39a379 JA |
287 | |
288 | if (rs->max_run[DDIR_READ]) | |
eb8bbf48 | 289 | 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]); |
3c39a379 | 290 | if (rs->max_run[DDIR_WRITE]) |
eb8bbf48 | 291 | 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]); |
3c39a379 JA |
292 | } |
293 | ||
294 | static void show_disk_util(void) | |
295 | { | |
296 | struct disk_util_stat *dus; | |
297 | struct list_head *entry; | |
298 | struct disk_util *du; | |
299 | double util; | |
300 | ||
eb8bbf48 | 301 | fprintf(f_out, "\nDisk stats (read/write):\n"); |
3c39a379 JA |
302 | |
303 | list_for_each(entry, &disk_list) { | |
304 | du = list_entry(entry, struct disk_util, list); | |
305 | dus = &du->dus; | |
306 | ||
307 | util = (double) 100 * du->dus.io_ticks / (double) du->msec; | |
308 | if (util > 100.0) | |
309 | util = 100.0; | |
310 | ||
eb8bbf48 | 311 | 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 JA |
312 | } |
313 | } | |
314 | ||
315 | static void show_ddir_status(struct thread_data *td, struct group_run_stats *rs, | |
316 | int ddir) | |
317 | { | |
318 | char *ddir_str[] = { "read ", "write" }; | |
319 | unsigned long min, max; | |
320 | unsigned long long bw; | |
321 | double mean, dev; | |
322 | ||
323 | if (!td->runtime[ddir]) | |
324 | return; | |
325 | ||
326 | bw = td->io_bytes[ddir] / td->runtime[ddir]; | |
eb8bbf48 | 327 | fprintf(f_out, " %s: io=%6lluMiB, bw=%6lluKiB/s, runt=%6lumsec\n", ddir_str[ddir], td->io_bytes[ddir] >> 20, bw, td->runtime[ddir]); |
3c39a379 JA |
328 | |
329 | if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev)) | |
eb8bbf48 | 330 | fprintf(f_out, " slat (msec): min=%5lu, max=%5lu, avg=%5.02f, dev=%5.02f\n", min, max, mean, dev); |
3c39a379 JA |
331 | |
332 | if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev)) | |
eb8bbf48 | 333 | fprintf(f_out, " clat (msec): min=%5lu, max=%5lu, avg=%5.02f, dev=%5.02f\n", min, max, mean, dev); |
3c39a379 JA |
334 | |
335 | if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) { | |
336 | double p_of_agg; | |
337 | ||
338 | p_of_agg = mean * 100 / (double) rs->agg[ddir]; | |
eb8bbf48 | 339 | 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); |
3c39a379 JA |
340 | } |
341 | } | |
342 | ||
343 | static void show_thread_status(struct thread_data *td, | |
344 | struct group_run_stats *rs) | |
345 | { | |
346 | double usr_cpu, sys_cpu; | |
347 | ||
348 | if (!(td->io_bytes[0] + td->io_bytes[1]) && !td->error) | |
349 | return; | |
350 | ||
eb8bbf48 | 351 | fprintf(f_out, "%s: (groupid=%d): err=%2d:\n",td->name, td->groupid, td->error); |
3c39a379 JA |
352 | |
353 | show_ddir_status(td, rs, td->ddir); | |
354 | if (td->io_bytes[td->ddir ^ 1]) | |
355 | show_ddir_status(td, rs, td->ddir ^ 1); | |
356 | ||
357 | if (td->runtime[0] + td->runtime[1]) { | |
358 | double runt = td->runtime[0] + td->runtime[1]; | |
359 | ||
360 | usr_cpu = (double) td->usr_time * 100 / runt; | |
361 | sys_cpu = (double) td->sys_time * 100 / runt; | |
362 | } else { | |
363 | usr_cpu = 0; | |
364 | sys_cpu = 0; | |
365 | } | |
366 | ||
eb8bbf48 | 367 | fprintf(f_out, " cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ctx); |
3c39a379 JA |
368 | } |
369 | ||
c6ae0a5b JA |
370 | static void show_ddir_status_terse(struct thread_data *td, |
371 | struct group_run_stats *rs, int ddir) | |
372 | { | |
373 | unsigned long min, max; | |
374 | unsigned long long bw; | |
375 | double mean, dev; | |
376 | ||
377 | bw = 0; | |
378 | if (td->runtime[ddir]) | |
379 | bw = td->io_bytes[ddir] / td->runtime[ddir]; | |
380 | ||
381 | fprintf(f_out, ",%llu,%llu,%lu", td->io_bytes[ddir] >> 10, bw, td->runtime[ddir]); | |
382 | ||
383 | if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev)) | |
384 | fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev); | |
385 | else | |
386 | fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0); | |
387 | ||
388 | if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev)) | |
389 | fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev); | |
390 | else | |
391 | fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0); | |
392 | ||
393 | if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) { | |
394 | double p_of_agg; | |
395 | ||
396 | p_of_agg = mean * 100 / (double) rs->agg[ddir]; | |
397 | fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", min, max, p_of_agg, mean, dev); | |
398 | } else | |
399 | fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", 0UL, 0UL, 0.0, 0.0, 0.0); | |
400 | ||
401 | } | |
402 | ||
403 | ||
404 | static void show_thread_status_terse(struct thread_data *td, | |
405 | struct group_run_stats *rs) | |
406 | { | |
407 | double usr_cpu, sys_cpu; | |
408 | ||
409 | fprintf(f_out, "%s,%d,%d",td->name, td->groupid, td->error); | |
410 | ||
411 | show_ddir_status_terse(td, rs, 0); | |
412 | show_ddir_status_terse(td, rs, 1); | |
413 | ||
414 | if (td->runtime[0] + td->runtime[1]) { | |
415 | double runt = td->runtime[0] + td->runtime[1]; | |
416 | ||
417 | usr_cpu = (double) td->usr_time * 100 / runt; | |
418 | sys_cpu = (double) td->sys_time * 100 / runt; | |
419 | } else { | |
420 | usr_cpu = 0; | |
421 | sys_cpu = 0; | |
422 | } | |
423 | ||
424 | fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ctx); | |
425 | } | |
426 | ||
3c39a379 JA |
427 | void show_run_stats(void) |
428 | { | |
429 | struct group_run_stats *runstats, *rs; | |
430 | struct thread_data *td; | |
431 | int i; | |
432 | ||
433 | runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1)); | |
434 | ||
435 | for (i = 0; i < groupid + 1; i++) { | |
436 | rs = &runstats[i]; | |
437 | ||
438 | memset(rs, 0, sizeof(*rs)); | |
439 | rs->min_bw[0] = rs->min_run[0] = ~0UL; | |
440 | rs->min_bw[1] = rs->min_run[1] = ~0UL; | |
441 | } | |
442 | ||
443 | for (i = 0; i < thread_number; i++) { | |
444 | unsigned long long rbw, wbw; | |
445 | ||
446 | td = &threads[i]; | |
447 | ||
448 | if (td->error) { | |
eb8bbf48 | 449 | fprintf(f_out, "%s: %s\n", td->name, td->verror); |
3c39a379 JA |
450 | continue; |
451 | } | |
452 | ||
453 | rs = &runstats[td->groupid]; | |
454 | ||
455 | if (td->runtime[0] < rs->min_run[0] || !rs->min_run[0]) | |
456 | rs->min_run[0] = td->runtime[0]; | |
457 | if (td->runtime[0] > rs->max_run[0]) | |
458 | rs->max_run[0] = td->runtime[0]; | |
459 | if (td->runtime[1] < rs->min_run[1] || !rs->min_run[1]) | |
460 | rs->min_run[1] = td->runtime[1]; | |
461 | if (td->runtime[1] > rs->max_run[1]) | |
462 | rs->max_run[1] = td->runtime[1]; | |
463 | ||
464 | rbw = wbw = 0; | |
465 | if (td->runtime[0]) | |
466 | rbw = td->io_bytes[0] / (unsigned long long) td->runtime[0]; | |
467 | if (td->runtime[1]) | |
468 | wbw = td->io_bytes[1] / (unsigned long long) td->runtime[1]; | |
469 | ||
470 | if (rbw < rs->min_bw[0]) | |
471 | rs->min_bw[0] = rbw; | |
472 | if (wbw < rs->min_bw[1]) | |
473 | rs->min_bw[1] = wbw; | |
474 | if (rbw > rs->max_bw[0]) | |
475 | rs->max_bw[0] = rbw; | |
476 | if (wbw > rs->max_bw[1]) | |
477 | rs->max_bw[1] = wbw; | |
478 | ||
479 | rs->io_kb[0] += td->io_bytes[0] >> 10; | |
480 | rs->io_kb[1] += td->io_bytes[1] >> 10; | |
481 | } | |
482 | ||
483 | for (i = 0; i < groupid + 1; i++) { | |
484 | rs = &runstats[i]; | |
485 | ||
486 | if (rs->max_run[0]) | |
487 | rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0]; | |
488 | if (rs->max_run[1]) | |
489 | rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1]; | |
490 | } | |
491 | ||
492 | /* | |
493 | * don't overwrite last signal output | |
494 | */ | |
c6ae0a5b JA |
495 | if (!terse_output) |
496 | printf("\n"); | |
3c39a379 JA |
497 | |
498 | for (i = 0; i < thread_number; i++) { | |
499 | td = &threads[i]; | |
500 | rs = &runstats[td->groupid]; | |
501 | ||
c6ae0a5b JA |
502 | if (terse_output) |
503 | show_thread_status_terse(td, rs); | |
504 | else | |
505 | show_thread_status(td, rs); | |
3c39a379 JA |
506 | } |
507 | ||
c6ae0a5b JA |
508 | if (!terse_output) { |
509 | for (i = 0; i < groupid + 1; i++) | |
510 | show_group_stats(&runstats[i], i); | |
3c39a379 | 511 | |
c6ae0a5b JA |
512 | show_disk_util(); |
513 | } | |
3c39a379 JA |
514 | } |
515 | ||
516 | static inline void add_stat_sample(struct io_stat *is, unsigned long val) | |
517 | { | |
518 | if (val > is->max_val) | |
519 | is->max_val = val; | |
520 | if (val < is->min_val) | |
521 | is->min_val = val; | |
522 | ||
523 | is->val += val; | |
524 | is->val_sq += val * val; | |
525 | is->samples++; | |
526 | } | |
527 | ||
528 | static void add_log_sample(struct thread_data *td, struct io_log *iolog, | |
529 | unsigned long val, int ddir) | |
530 | { | |
531 | if (iolog->nr_samples == iolog->max_samples) { | |
532 | int new_size = sizeof(struct io_sample) * iolog->max_samples*2; | |
533 | ||
534 | iolog->log = realloc(iolog->log, new_size); | |
535 | iolog->max_samples <<= 1; | |
536 | } | |
537 | ||
538 | iolog->log[iolog->nr_samples].val = val; | |
539 | iolog->log[iolog->nr_samples].time = mtime_since_now(&td->epoch); | |
540 | iolog->log[iolog->nr_samples].ddir = ddir; | |
541 | iolog->nr_samples++; | |
542 | } | |
543 | ||
544 | void add_clat_sample(struct thread_data *td, int ddir, unsigned long msec) | |
545 | { | |
546 | add_stat_sample(&td->clat_stat[ddir], msec); | |
547 | ||
548 | if (td->clat_log) | |
549 | add_log_sample(td, td->clat_log, msec, ddir); | |
550 | } | |
551 | ||
552 | void add_slat_sample(struct thread_data *td, int ddir, unsigned long msec) | |
553 | { | |
554 | add_stat_sample(&td->slat_stat[ddir], msec); | |
555 | ||
556 | if (td->slat_log) | |
557 | add_log_sample(td, td->slat_log, msec, ddir); | |
558 | } | |
559 | ||
560 | void add_bw_sample(struct thread_data *td, int ddir) | |
561 | { | |
562 | unsigned long spent = mtime_since_now(&td->stat_sample_time[ddir]); | |
563 | unsigned long rate; | |
564 | ||
565 | if (spent < td->bw_avg_time) | |
566 | return; | |
567 | ||
568 | rate = (td->this_io_bytes[ddir] - td->stat_io_bytes[ddir]) / spent; | |
569 | add_stat_sample(&td->bw_stat[ddir], rate); | |
570 | ||
571 | if (td->bw_log) | |
572 | add_log_sample(td, td->bw_log, rate, ddir); | |
573 | ||
574 | gettimeofday(&td->stat_sample_time[ddir], NULL); | |
575 | td->stat_io_bytes[ddir] = td->this_io_bytes[ddir]; | |
576 | } | |
577 | ||
578 |