Add ramp_time option
[fio.git] / fio.c
CommitLineData
ebac4655
JA
1/*
2 * fio - the flexible io tester
3 *
4 * Copyright (C) 2005 Jens Axboe <axboe@suse.de>
aae22ca7 5 * Copyright (C) 2006 Jens Axboe <axboe@kernel.dk>
ebac4655 6 *
8e9fe637
JA
7 * The license below covers all files distributed with fio unless otherwise
8 * noted in the file itself.
9 *
ebac4655 10 * This program is free software; you can redistribute it and/or modify
8e9fe637
JA
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
ebac4655
JA
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
ebac4655
JA
24#include <unistd.h>
25#include <fcntl.h>
26#include <string.h>
ebac4655
JA
27#include <signal.h>
28#include <time.h>
dbe1125e 29#include <locale.h>
36167d82 30#include <assert.h>
ebac4655
JA
31#include <sys/stat.h>
32#include <sys/wait.h>
33#include <sys/ipc.h>
34#include <sys/shm.h>
ebac4655
JA
35#include <sys/mman.h>
36
37#include "fio.h"
210f43b3 38#include "hash.h"
2e5cdb11 39#include "smalloc.h"
ebac4655 40
cfc99db7
JA
41unsigned long page_mask;
42unsigned long page_size;
29d610e1
JA
43#define ALIGN(buf) \
44 (char *) (((unsigned long) (buf) + page_mask) & ~page_mask)
ebac4655
JA
45
46int groupid = 0;
47int thread_number = 0;
9cedf167
JA
48int nr_process = 0;
49int nr_thread = 0;
ebac4655 50int shm_id = 0;
53cdc686 51int temp_stall_ts;
d3eeeabc 52unsigned long done_secs = 0;
ebac4655 53
cdd18ad8 54static struct fio_mutex *startup_mutex;
6ce15a32 55static volatile int fio_abort;
437c9b71 56static int exit_value;
ccb0fa24 57static struct itimerval itimer;
ebac4655 58
bb3884d8
JA
59struct io_log *agg_io_log[2];
60
ebac4655 61#define TERMINATE_ALL (-1)
75154845 62#define JOB_START_TIMEOUT (5 * 1000)
ebac4655 63
6ce15a32
JA
64static inline void td_set_runstate(struct thread_data *td, int runstate)
65{
d8fab1b6
JA
66 if (td->runstate == runstate)
67 return;
68
5921e80c
JA
69 dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid,
70 td->runstate, runstate);
6ce15a32
JA
71 td->runstate = runstate;
72}
73
390c40e2 74static void terminate_threads(int group_id)
ebac4655 75{
34572e28 76 struct thread_data *td;
ebac4655
JA
77 int i;
78
6f88bcb0
JA
79 dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
80
34572e28 81 for_each_td(td, i) {
ebac4655 82 if (group_id == TERMINATE_ALL || groupid == td->groupid) {
6f88bcb0 83 dprint(FD_PROCESS, "setting terminate on %s/%d\n",
5921e80c 84 td->o.name, (int) td->pid);
ad830ed7
JA
85 td->terminate = 1;
86 td->o.start_delay = 0;
87
7a93ab19
JA
88 /*
89 * if the thread is running, just let it exit
90 */
91 if (td->runstate < TD_RUNNING)
c1302d44 92 kill(td->pid, SIGQUIT);
f63f7f3b
JA
93 else {
94 struct ioengine_ops *ops = td->io_ops;
95
96 if (ops && (ops->flags & FIO_SIGQUIT))
97 kill(td->pid, SIGQUIT);
98 }
ebac4655
JA
99 }
100 }
101}
102
ccb0fa24
JA
103static void status_timer_arm(void)
104{
105 itimer.it_value.tv_sec = 0;
106 itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
107 setitimer(ITIMER_REAL, &itimer, NULL);
108}
109
697a606c 110static void sig_alrm(int sig)
ebac4655 111{
697a606c 112 if (threads) {
5ec10eaa 113 update_io_ticks();
5ec10eaa 114 print_thread_status();
ccb0fa24 115 status_timer_arm();
697a606c
JA
116 }
117}
118
119static void sig_int(int sig)
120{
121 if (threads) {
5ec10eaa
JA
122 printf("\nfio: terminating on signal %d\n", sig);
123 fflush(stdout);
124 terminate_threads(TERMINATE_ALL);
ebac4655
JA
125 }
126}
127
de79c915
JA
128static void sig_ill(int sig)
129{
130 if (!threads)
131 return;
132
133 log_err("fio: illegal instruction. your cpu does not support "
134 "the sse4.2 instruction for crc32c\n");
135 terminate_threads(TERMINATE_ALL);
136 exit(4);
137}
138
697a606c
JA
139static void set_sig_handlers(void)
140{
141 struct sigaction act;
142
143 memset(&act, 0, sizeof(act));
144 act.sa_handler = sig_alrm;
145 act.sa_flags = SA_RESTART;
146 sigaction(SIGALRM, &act, NULL);
147
148 memset(&act, 0, sizeof(act));
149 act.sa_handler = sig_int;
150 act.sa_flags = SA_RESTART;
151 sigaction(SIGINT, &act, NULL);
de79c915
JA
152
153 memset(&act, 0, sizeof(act));
154 act.sa_handler = sig_ill;
155 act.sa_flags = SA_RESTART;
156 sigaction(SIGILL, &act, NULL);
697a606c
JA
157}
158
906c8d75
JA
159/*
160 * Check if we are above the minimum rate given.
161 */
ebac4655
JA
162static int check_min_rate(struct thread_data *td, struct timeval *now)
163{
0904200b 164 unsigned long long bytes = 0;
4e991c23 165 unsigned long iops = 0;
ebac4655
JA
166 unsigned long spent;
167 unsigned long rate;
ebac4655 168
780bf1a1
JA
169 /*
170 * No minimum rate set, always ok
171 */
2dc1bbeb 172 if (!td->o.ratemin && !td->o.rate_iops_min)
780bf1a1
JA
173 return 0;
174
ebac4655
JA
175 /*
176 * allow a 2 second settle period in the beginning
177 */
178 if (mtime_since(&td->start, now) < 2000)
179 return 0;
180
4e991c23
JA
181 if (td_read(td)) {
182 iops += td->io_blocks[DDIR_READ];
0904200b 183 bytes += td->this_io_bytes[DDIR_READ];
4e991c23
JA
184 }
185 if (td_write(td)) {
186 iops += td->io_blocks[DDIR_WRITE];
0904200b 187 bytes += td->this_io_bytes[DDIR_WRITE];
4e991c23 188 }
0904200b 189
ebac4655
JA
190 /*
191 * if rate blocks is set, sample is running
192 */
4e991c23 193 if (td->rate_bytes || td->rate_blocks) {
ebac4655 194 spent = mtime_since(&td->lastrate, now);
2dc1bbeb 195 if (spent < td->o.ratecycle)
ebac4655
JA
196 return 0;
197
2dc1bbeb 198 if (td->o.rate) {
4e991c23
JA
199 /*
200 * check bandwidth specified rate
201 */
202 if (bytes < td->rate_bytes) {
5ec10eaa
JA
203 log_err("%s: min rate %u not met\n", td->o.name,
204 td->o.ratemin);
4e991c23
JA
205 return 1;
206 } else {
207 rate = (bytes - td->rate_bytes) / spent;
5ec10eaa
JA
208 if (rate < td->o.ratemin ||
209 bytes < td->rate_bytes) {
210 log_err("%s: min rate %u not met, got"
211 " %luKiB/sec\n", td->o.name,
212 td->o.ratemin, rate);
4e991c23
JA
213 return 1;
214 }
215 }
413dd459 216 } else {
4e991c23
JA
217 /*
218 * checks iops specified rate
219 */
2dc1bbeb 220 if (iops < td->o.rate_iops) {
5ec10eaa
JA
221 log_err("%s: min iops rate %u not met\n",
222 td->o.name, td->o.rate_iops);
413dd459 223 return 1;
4e991c23
JA
224 } else {
225 rate = (iops - td->rate_blocks) / spent;
5ec10eaa
JA
226 if (rate < td->o.rate_iops_min ||
227 iops < td->rate_blocks) {
228 log_err("%s: min iops rate %u not met,"
229 " got %lu\n", td->o.name,
230 td->o.rate_iops_min,
231 rate);
4e991c23 232 }
413dd459 233 }
ebac4655
JA
234 }
235 }
236
0904200b 237 td->rate_bytes = bytes;
4e991c23 238 td->rate_blocks = iops;
ebac4655
JA
239 memcpy(&td->lastrate, now, sizeof(*now));
240 return 0;
241}
242
243static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
244{
2dc1bbeb 245 if (!td->o.timeout)
ebac4655 246 return 0;
2dc1bbeb 247 if (mtime_since(&td->epoch, t) >= td->o.timeout * 1000)
ebac4655
JA
248 return 1;
249
250 return 0;
251}
252
906c8d75
JA
253/*
254 * When job exits, we can cancel the in-flight IO if we are using async
255 * io. Attempt to do so.
256 */
ebac4655
JA
257static void cleanup_pending_aio(struct thread_data *td)
258{
01743ee1 259 struct flist_head *entry, *n;
ebac4655
JA
260 struct io_u *io_u;
261 int r;
262
263 /*
264 * get immediately available events, if any
265 */
d7762cf8 266 r = io_u_queued_complete(td, 0);
b2fdda43
JA
267 if (r < 0)
268 return;
ebac4655
JA
269
270 /*
271 * now cancel remaining active events
272 */
2866c82d 273 if (td->io_ops->cancel) {
01743ee1
JA
274 flist_for_each_safe(entry, n, &td->io_u_busylist) {
275 io_u = flist_entry(entry, struct io_u, list);
ebac4655 276
0c6e7517
JA
277 /*
278 * if the io_u isn't in flight, then that generally
279 * means someone leaked an io_u. complain but fix
280 * it up, so we don't stall here.
281 */
282 if ((io_u->flags & IO_U_F_FLIGHT) == 0) {
283 log_err("fio: non-busy IO on busy list\n");
ebac4655 284 put_io_u(td, io_u);
0c6e7517
JA
285 } else {
286 r = td->io_ops->cancel(td, io_u);
287 if (!r)
288 put_io_u(td, io_u);
289 }
ebac4655
JA
290 }
291 }
292
97601024 293 if (td->cur_depth)
d7762cf8 294 r = io_u_queued_complete(td, td->cur_depth);
ebac4655
JA
295}
296
858a3d47
JA
297/*
298 * Helper to handle the final sync of a file. Works just like the normal
299 * io path, just does everything sync.
300 */
301static int fio_io_sync(struct thread_data *td, struct fio_file *f)
302{
303 struct io_u *io_u = __get_io_u(td);
858a3d47
JA
304 int ret;
305
306 if (!io_u)
307 return 1;
308
309 io_u->ddir = DDIR_SYNC;
310 io_u->file = f;
311
312 if (td_io_prep(td, io_u)) {
313 put_io_u(td, io_u);
314 return 1;
315 }
316
755200a3 317requeue:
858a3d47 318 ret = td_io_queue(td, io_u);
36167d82 319 if (ret < 0) {
e1161c32 320 td_verror(td, io_u->error, "td_io_queue");
858a3d47 321 put_io_u(td, io_u);
858a3d47 322 return 1;
36167d82 323 } else if (ret == FIO_Q_QUEUED) {
d7762cf8 324 if (io_u_queued_complete(td, 1) < 0)
36167d82 325 return 1;
36167d82
JA
326 } else if (ret == FIO_Q_COMPLETED) {
327 if (io_u->error) {
e1161c32 328 td_verror(td, io_u->error, "td_io_queue");
36167d82
JA
329 return 1;
330 }
858a3d47 331
d7762cf8 332 if (io_u_sync_complete(td, io_u) < 0)
b2fdda43 333 return 1;
755200a3
JA
334 } else if (ret == FIO_Q_BUSY) {
335 if (td_io_commit(td))
336 return 1;
337 goto requeue;
858a3d47
JA
338 }
339
340 return 0;
341}
342
906c8d75 343/*
34403fb1 344 * The main verify engine. Runs over the writes we previously submitted,
906c8d75
JA
345 * reads the blocks back in, and checks the crc/md5 of the data.
346 */
1e97cce9 347static void do_verify(struct thread_data *td)
ebac4655 348{
53cdc686 349 struct fio_file *f;
36167d82 350 struct io_u *io_u;
af52b345
JA
351 int ret, min_events;
352 unsigned int i;
e5b401d4
JA
353
354 /*
355 * sync io first and invalidate cache, to make sure we really
356 * read from disk.
357 */
358 for_each_file(td, f, i) {
3d7b485f
JA
359 if (!(f->flags & FIO_FILE_OPEN))
360 continue;
b2fdda43
JA
361 if (fio_io_sync(td, f))
362 break;
363 if (file_invalidate_cache(td, f))
364 break;
e5b401d4 365 }
ebac4655 366
b2fdda43
JA
367 if (td->error)
368 return;
369
ebac4655
JA
370 td_set_runstate(td, TD_VERIFYING);
371
36167d82
JA
372 io_u = NULL;
373 while (!td->terminate) {
4950421a 374 int ret2, full;
5451792e 375
ebac4655
JA
376 io_u = __get_io_u(td);
377 if (!io_u)
378 break;
379
069c2918
JA
380 if (runtime_exceeded(td, &io_u->start_time)) {
381 put_io_u(td, io_u);
90a87d4b 382 td->terminate = 1;
02bcaa8c 383 break;
069c2918 384 }
02bcaa8c 385
069c2918
JA
386 if (get_next_verify(td, io_u)) {
387 put_io_u(td, io_u);
ebac4655 388 break;
069c2918 389 }
ebac4655 390
069c2918
JA
391 if (td_io_prep(td, io_u)) {
392 put_io_u(td, io_u);
53cdc686 393 break;
069c2918 394 }
d7762cf8
JA
395
396 io_u->end_io = verify_io_u;
53cdc686 397
11786802 398 ret = td_io_queue(td, io_u);
36167d82
JA
399 switch (ret) {
400 case FIO_Q_COMPLETED:
401 if (io_u->error)
22819ec2 402 ret = -io_u->error;
9e9d164e 403 else if (io_u->resid) {
36167d82 404 int bytes = io_u->xfer_buflen - io_u->resid;
d460eb31 405 struct fio_file *f = io_u->file;
ebac4655 406
9e9d164e
JA
407 /*
408 * zero read, fail
409 */
410 if (!bytes) {
41d9f0fd 411 td_verror(td, EIO, "full resid");
9e9d164e
JA
412 put_io_u(td, io_u);
413 break;
414 }
8400d9b2 415
36167d82
JA
416 io_u->xfer_buflen = io_u->resid;
417 io_u->xfer_buf += bytes;
8400d9b2
JA
418 io_u->offset += bytes;
419
30061b97
JA
420 td->ts.short_io_u[io_u->ddir]++;
421
d460eb31 422 if (io_u->offset == f->real_file_size)
8400d9b2
JA
423 goto sync_done;
424
11786802
JA
425 requeue_io_u(td, &io_u);
426 } else {
8400d9b2 427sync_done:
11786802
JA
428 ret = io_u_sync_complete(td, io_u);
429 if (ret < 0)
430 break;
36167d82 431 }
36167d82
JA
432 continue;
433 case FIO_Q_QUEUED:
434 break;
755200a3
JA
435 case FIO_Q_BUSY:
436 requeue_io_u(td, &io_u);
5451792e
JA
437 ret2 = td_io_commit(td);
438 if (ret2 < 0)
439 ret = ret2;
755200a3 440 break;
36167d82
JA
441 default:
442 assert(ret < 0);
e1161c32 443 td_verror(td, -ret, "td_io_queue");
ebac4655
JA
444 break;
445 }
446
99784632 447 if (ret < 0 || td->error)
3af6ef39
JA
448 break;
449
ebac4655 450 /*
3af6ef39
JA
451 * if we can queue more, do so. but check if there are
452 * completed io_u's first.
ebac4655 453 */
4950421a
JA
454 full = queue_full(td) || ret == FIO_Q_BUSY;
455 if (full || !td->o.iodepth_batch_complete) {
456 min_events = td->o.iodepth_batch_complete;
457 if (full && !min_events)
838bc709 458 min_events = 1;
e916b390 459
4950421a
JA
460 do {
461 /*
462 * Reap required number of io units, if any,
463 * and do the verification on them through
464 * the callback handler
465 */
466 if (io_u_queued_complete(td, min_events) < 0) {
467 ret = -1;
468 break;
469 }
470 } while (full && (td->cur_depth > td->o.iodepth_low));
471 }
472 if (ret < 0)
ebac4655 473 break;
36167d82 474 }
ebac4655 475
c01c0395
JA
476 if (!td->error) {
477 min_events = td->cur_depth;
478
479 if (min_events)
480 ret = io_u_queued_complete(td, min_events);
481 } else
ebac4655
JA
482 cleanup_pending_aio(td);
483
484 td_set_runstate(td, TD_RUNNING);
485}
486
32cd46a0 487/*
906c8d75 488 * Main IO worker function. It retrieves io_u's to process and queues
32cd46a0
JA
489 * and reaps them, checking for rate and errors along the way.
490 */
ebac4655
JA
491static void do_io(struct thread_data *td)
492{
02bcaa8c 493 struct timeval s;
ebac4655 494 unsigned long usec;
af52b345
JA
495 unsigned int i;
496 int ret = 0;
ebac4655 497
5853e5a8
JA
498 td_set_runstate(td, TD_RUNNING);
499
7bb48f84 500 while ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->o.size) {
97601024
JA
501 struct timeval comp_time;
502 long bytes_done = 0;
84585003 503 int min_evts = 0;
ebac4655 504 struct io_u *io_u;
4950421a 505 int ret2, full;
ebac4655
JA
506
507 if (td->terminate)
508 break;
509
3d7c391d 510 io_u = get_io_u(td);
ebac4655
JA
511 if (!io_u)
512 break;
513
514 memcpy(&s, &io_u->start_time, sizeof(s));
97601024
JA
515
516 if (runtime_exceeded(td, &s)) {
517 put_io_u(td, io_u);
90a87d4b 518 td->terminate = 1;
97601024
JA
519 break;
520 }
36167d82 521
b67740d3
JA
522 /*
523 * Add verification end_io handler, if asked to verify
524 * a previously written file.
525 */
cc3fc855 526 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ) {
b67740d3 527 io_u->end_io = verify_io_u;
d8fab1b6
JA
528 td_set_runstate(td, TD_VERIFYING);
529 } else
530 td_set_runstate(td, TD_RUNNING);
b67740d3 531
11786802 532 ret = td_io_queue(td, io_u);
36167d82
JA
533 switch (ret) {
534 case FIO_Q_COMPLETED:
5451792e
JA
535 if (io_u->error)
536 ret = -io_u->error;
9e9d164e 537 else if (io_u->resid) {
36167d82 538 int bytes = io_u->xfer_buflen - io_u->resid;
d460eb31 539 struct fio_file *f = io_u->file;
36167d82 540
9e9d164e
JA
541 /*
542 * zero read, fail
543 */
544 if (!bytes) {
41d9f0fd 545 td_verror(td, EIO, "full resid");
9e9d164e
JA
546 put_io_u(td, io_u);
547 break;
548 }
549
cec6b55d 550 io_u->xfer_buflen = io_u->resid;
36167d82 551 io_u->xfer_buf += bytes;
5a7c5680
JA
552 io_u->offset += bytes;
553
30061b97
JA
554 td->ts.short_io_u[io_u->ddir]++;
555
d460eb31 556 if (io_u->offset == f->real_file_size)
5a7c5680
JA
557 goto sync_done;
558
11786802
JA
559 requeue_io_u(td, &io_u);
560 } else {
5a7c5680 561sync_done:
11786802
JA
562 fio_gettime(&comp_time, NULL);
563 bytes_done = io_u_sync_complete(td, io_u);
564 if (bytes_done < 0)
565 ret = bytes_done;
cec6b55d 566 }
36167d82
JA
567 break;
568 case FIO_Q_QUEUED:
7e77dd02
JA
569 /*
570 * if the engine doesn't have a commit hook,
571 * the io_u is really queued. if it does have such
572 * a hook, it has to call io_u_queued() itself.
573 */
574 if (td->io_ops->commit == NULL)
575 io_u_queued(td, io_u);
36167d82 576 break;
755200a3
JA
577 case FIO_Q_BUSY:
578 requeue_io_u(td, &io_u);
5451792e
JA
579 ret2 = td_io_commit(td);
580 if (ret2 < 0)
581 ret = ret2;
755200a3 582 break;
36167d82
JA
583 default:
584 assert(ret < 0);
585 put_io_u(td, io_u);
586 break;
ebac4655
JA
587 }
588
99784632 589 if (ret < 0 || td->error)
36167d82
JA
590 break;
591
97601024
JA
592 /*
593 * See if we need to complete some commands
594 */
4950421a
JA
595 full = queue_full(td) || ret == FIO_Q_BUSY;
596 if (full || !td->o.iodepth_batch_complete) {
597 min_evts = td->o.iodepth_batch_complete;
598 if (full && !min_evts)
36167d82 599 min_evts = 1;
4950421a 600
97601024 601 fio_gettime(&comp_time, NULL);
4950421a
JA
602
603 do {
604 ret = io_u_queued_complete(td, min_evts);
605 if (ret <= 0)
606 break;
607
608 bytes_done += ret;
609 } while (full && (td->cur_depth > td->o.iodepth_low));
ebac4655
JA
610 }
611
4950421a
JA
612 if (ret < 0)
613 break;
97601024
JA
614 if (!bytes_done)
615 continue;
616
ebac4655
JA
617 /*
618 * the rate is batched for now, it should work for batches
619 * of completions except the very first one which may look
620 * a little bursty
621 */
721938ae
JA
622 if (ramp_time_over(td)) {
623 usec = utime_since(&s, &comp_time);
ebac4655 624
721938ae 625 rate_throttle(td, usec, bytes_done);
ebac4655 626
721938ae
JA
627 if (check_min_rate(td, &comp_time)) {
628 if (exitall_on_terminate)
629 terminate_threads(td->groupid);
630 td_verror(td, EIO, "check_min_rate");
631 break;
632 }
ebac4655
JA
633 }
634
2dc1bbeb 635 if (td->o.thinktime) {
9c1f7434
JA
636 unsigned long long b;
637
638 b = td->io_blocks[0] + td->io_blocks[1];
2dc1bbeb 639 if (!(b % td->o.thinktime_blocks)) {
48097d5c
JA
640 int left;
641
2dc1bbeb
JA
642 if (td->o.thinktime_spin)
643 __usec_sleep(td->o.thinktime_spin);
48097d5c 644
2dc1bbeb 645 left = td->o.thinktime - td->o.thinktime_spin;
48097d5c
JA
646 if (left)
647 usec_sleep(td, left);
648 }
9c1f7434 649 }
ebac4655
JA
650 }
651
aa31f1f1
SL
652 if (td->o.fill_device && td->error == ENOSPC) {
653 td->error = 0;
654 td->terminate = 1;
655 }
4d2413c6 656 if (!td->error) {
3d7c391d
JA
657 struct fio_file *f;
658
c01c0395
JA
659 i = td->cur_depth;
660 if (i)
661 ret = io_u_queued_complete(td, i);
ebac4655 662
2dc1bbeb 663 if (should_fsync(td) && td->o.end_fsync) {
84585003 664 td_set_runstate(td, TD_FSYNCING);
3d7b485f
JA
665
666 for_each_file(td, f, i) {
667 if (!(f->flags & FIO_FILE_OPEN))
668 continue;
858a3d47 669 fio_io_sync(td, f);
3d7b485f 670 }
84585003 671 }
c01c0395
JA
672 } else
673 cleanup_pending_aio(td);
2ba1c290
JA
674
675 /*
676 * stop job if we failed doing any IO
677 */
678 if ((td->this_io_bytes[0] + td->this_io_bytes[1]) == 0)
679 td->done = 1;
ebac4655
JA
680}
681
ebac4655
JA
682static void cleanup_io_u(struct thread_data *td)
683{
01743ee1 684 struct flist_head *entry, *n;
ebac4655
JA
685 struct io_u *io_u;
686
01743ee1
JA
687 flist_for_each_safe(entry, n, &td->io_u_freelist) {
688 io_u = flist_entry(entry, struct io_u, list);
ebac4655 689
01743ee1 690 flist_del(&io_u->list);
ebac4655
JA
691 free(io_u);
692 }
693
2f9ade3c 694 free_io_mem(td);
ebac4655
JA
695}
696
697static int init_io_u(struct thread_data *td)
698{
699 struct io_u *io_u;
a00735e6 700 unsigned int max_bs;
ebac4655
JA
701 int i, max_units;
702 char *p;
703
1e3c09af 704 max_units = td->o.iodepth;
2dc1bbeb 705 max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
5ec10eaa
JA
706 td->orig_buffer_size = (unsigned long long) max_bs
707 * (unsigned long long) max_units;
708
709 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
710 unsigned long bs;
74b025b0 711
5ec10eaa
JA
712 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
713 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
714 }
ebac4655 715
c3990645
JA
716 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
717 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
718 return 1;
719 }
720
2f9ade3c
JA
721 if (allocate_io_mem(td))
722 return 1;
ebac4655 723
b3f378e9
JA
724 if (td->o.odirect)
725 p = ALIGN(td->orig_buffer);
726 else
727 p = td->orig_buffer;
728
ebac4655 729 for (i = 0; i < max_units; i++) {
db1cd90b
JA
730 if (td->terminate)
731 return 1;
ebac4655
JA
732 io_u = malloc(sizeof(*io_u));
733 memset(io_u, 0, sizeof(*io_u));
01743ee1 734 INIT_FLIST_HEAD(&io_u->list);
ebac4655 735
b4c5e1ac
JA
736 if (!(td->io_ops->flags & FIO_NOIO)) {
737 io_u->buf = p + max_bs * i;
e9459e5a 738
5973cafb
JA
739 if (td_write(td) && !td->o.refill_buffers)
740 io_u_fill_buffer(td, io_u, max_bs);
b4c5e1ac 741 }
6b9cea23 742
b1ff3403 743 io_u->index = i;
0c6e7517 744 io_u->flags = IO_U_F_FREE;
01743ee1 745 flist_add(&io_u->list, &td->io_u_freelist);
ebac4655
JA
746 }
747
433afcb4
JA
748 io_u_init_timeout();
749
ebac4655
JA
750 return 0;
751}
752
da86774e
JA
753static int switch_ioscheduler(struct thread_data *td)
754{
755 char tmp[256], tmp2[128];
756 FILE *f;
757 int ret;
758
ba0fbe10 759 if (td->io_ops->flags & FIO_DISKLESSIO)
f48b467c
JA
760 return 0;
761
da86774e
JA
762 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
763
764 f = fopen(tmp, "r+");
765 if (!f) {
cbf5c1d7 766 if (errno == ENOENT) {
5ec10eaa
JA
767 log_err("fio: os or kernel doesn't support IO scheduler"
768 " switching\n");
cbf5c1d7
JA
769 return 0;
770 }
771 td_verror(td, errno, "fopen iosched");
da86774e
JA
772 return 1;
773 }
774
775 /*
776 * Set io scheduler.
777 */
2dc1bbeb 778 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
da86774e 779 if (ferror(f) || ret != 1) {
e1161c32 780 td_verror(td, errno, "fwrite");
da86774e
JA
781 fclose(f);
782 return 1;
783 }
784
785 rewind(f);
786
787 /*
788 * Read back and check that the selected scheduler is now the default.
789 */
790 ret = fread(tmp, 1, sizeof(tmp), f);
791 if (ferror(f) || ret < 0) {
e1161c32 792 td_verror(td, errno, "fread");
da86774e
JA
793 fclose(f);
794 return 1;
795 }
796
2dc1bbeb 797 sprintf(tmp2, "[%s]", td->o.ioscheduler);
da86774e 798 if (!strstr(tmp, tmp2)) {
2dc1bbeb 799 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
e1161c32 800 td_verror(td, EINVAL, "iosched_switch");
da86774e
JA
801 fclose(f);
802 return 1;
803 }
804
805 fclose(f);
806 return 0;
807}
808
492158cf
JA
809static int keep_running(struct thread_data *td)
810{
811 unsigned long long io_done;
812
20e354ef
JA
813 if (td->done)
814 return 0;
492158cf
JA
815 if (td->o.time_based)
816 return 1;
817 if (td->o.loops) {
818 td->o.loops--;
819 return 1;
820 }
821
5ec10eaa
JA
822 io_done = td->io_bytes[DDIR_READ] + td->io_bytes[DDIR_WRITE]
823 + td->io_skip_bytes;
492158cf
JA
824 if (io_done < td->o.size)
825 return 1;
826
827 return 0;
828}
829
a978ba68 830static int clear_io_state(struct thread_data *td)
ebac4655 831{
53cdc686 832 struct fio_file *f;
af52b345
JA
833 unsigned int i;
834 int ret;
ebac4655 835
756867bd 836 td->ts.stat_io_bytes[0] = td->ts.stat_io_bytes[1] = 0;
ebac4655 837 td->this_io_bytes[0] = td->this_io_bytes[1] = 0;
20dc95c4 838 td->zone_bytes = 0;
d7d3b49b 839 td->rate_bytes = 0;
4e991c23 840 td->rate_blocks = 0;
38d77cae 841 td->rw_end_set[0] = td->rw_end_set[1] = 0;
ebac4655 842
c1324df1
JA
843 td->last_was_sync = 0;
844
2ba1c290
JA
845 /*
846 * reset file done count if we are to start over
847 */
848 if (td->o.time_based || td->o.loops)
48f5abd3 849 td->nr_done_files = 0;
281f9b63 850
24ffd2c2 851 close_files(td);
53cdc686 852
a978ba68
JA
853 ret = 0;
854 for_each_file(td, f, i) {
281f9b63 855 f->flags &= ~FIO_FILE_DONE;
a978ba68
JA
856 ret = td_io_open_file(td, f);
857 if (ret)
858 break;
53cdc686 859 }
a978ba68
JA
860
861 return ret;
ebac4655
JA
862}
863
906c8d75
JA
864/*
865 * Entry point for the thread based jobs. The process based jobs end up
866 * here as well, after a little setup.
867 */
ebac4655
JA
868static void *thread_main(void *data)
869{
10927316 870 unsigned long long runtime[2], elapsed;
ebac4655 871 struct thread_data *td = data;
a978ba68 872 int clear_state;
ebac4655 873
2dc1bbeb 874 if (!td->o.use_thread)
ebac4655
JA
875 setsid();
876
877 td->pid = getpid();
878
5921e80c 879 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
ee56ad50 880
01743ee1
JA
881 INIT_FLIST_HEAD(&td->io_u_freelist);
882 INIT_FLIST_HEAD(&td->io_u_busylist);
883 INIT_FLIST_HEAD(&td->io_u_requeues);
884 INIT_FLIST_HEAD(&td->io_log_list);
885 INIT_FLIST_HEAD(&td->io_hist_list);
bb5d7d0b 886 td->io_hist_tree = RB_ROOT;
aea47d44 887
db1cd90b 888 td_set_runstate(td, TD_INITIALIZED);
cdd18ad8
JA
889 fio_mutex_up(startup_mutex);
890 fio_mutex_down(td->mutex);
db1cd90b
JA
891
892 /*
cdd18ad8 893 * the ->mutex mutex is now no longer used, close it to avoid
db1cd90b
JA
894 * eating a file descriptor
895 */
cdd18ad8 896 fio_mutex_remove(td->mutex);
db1cd90b 897
d84f8d49
JA
898 /*
899 * May alter parameters that init_io_u() will use, so we need to
900 * do this first.
901 */
902 if (init_iolog(td))
903 goto err;
904
ebac4655 905 if (init_io_u(td))
db1cd90b 906 goto err;
ebac4655 907
375b2695 908 if (td->o.cpumask_set && fio_setaffinity(td) == -1) {
e1161c32 909 td_verror(td, errno, "cpu_set_affinity");
db1cd90b 910 goto err;
ebac4655
JA
911 }
912
ac684785 913 if (td->ioprio_set) {
ebac4655 914 if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) {
e1161c32 915 td_verror(td, errno, "ioprio_set");
db1cd90b 916 goto err;
ebac4655
JA
917 }
918 }
919
2dc1bbeb 920 if (nice(td->o.nice) == -1) {
e1161c32 921 td_verror(td, errno, "nice");
db1cd90b 922 goto err;
b6f4d880
JA
923 }
924
2dc1bbeb 925 if (td->o.ioscheduler && switch_ioscheduler(td))
db1cd90b 926 goto err;
37f56873 927
2dc1bbeb 928 if (!td->o.create_serialize && setup_files(td))
ebac4655
JA
929 goto err;
930
7d6c5283
JA
931 if (td_io_init(td))
932 goto err;
933
b5af8293
JA
934 if (open_files(td))
935 goto err;
936
68727076
JA
937 if (init_random_map(td))
938 goto err;
939
2dc1bbeb
JA
940 if (td->o.exec_prerun) {
941 if (system(td->o.exec_prerun) < 0)
69cfd7e0
JA
942 goto err;
943 }
4e0ba8af 944
69008999 945 fio_gettime(&td->epoch, NULL);
433afcb4 946 memcpy(&td->timeout_end, &td->epoch, sizeof(td->epoch));
756867bd 947 getrusage(RUSAGE_SELF, &td->ts.ru_start);
69008999
JA
948
949 runtime[0] = runtime[1] = 0;
a978ba68 950 clear_state = 0;
492158cf 951 while (keep_running(td)) {
02bcaa8c 952 fio_gettime(&td->start, NULL);
756867bd 953 memcpy(&td->ts.stat_sample_time, &td->start, sizeof(td->start));
ebac4655 954
2dc1bbeb 955 if (td->o.ratemin)
5ec10eaa
JA
956 memcpy(&td->lastrate, &td->ts.stat_sample_time,
957 sizeof(td->lastrate));
ebac4655 958
a978ba68
JA
959 if (clear_state && clear_io_state(td))
960 break;
961
ebac4655
JA
962 prune_io_piece_log(td);
963
ba0fbe10 964 do_io(td);
ebac4655 965
a978ba68
JA
966 clear_state = 1;
967
38d77cae
JA
968 if (td_read(td) && td->io_bytes[DDIR_READ]) {
969 if (td->rw_end_set[DDIR_READ])
5ec10eaa
JA
970 elapsed = utime_since(&td->start,
971 &td->rw_end[DDIR_READ]);
38d77cae
JA
972 else
973 elapsed = utime_since_now(&td->start);
974
975 runtime[DDIR_READ] += elapsed;
976 }
977 if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
978 if (td->rw_end_set[DDIR_WRITE])
5ec10eaa
JA
979 elapsed = utime_since(&td->start,
980 &td->rw_end[DDIR_WRITE]);
38d77cae
JA
981 else
982 elapsed = utime_since_now(&td->start);
983
984 runtime[DDIR_WRITE] += elapsed;
985 }
5ec10eaa 986
ebac4655
JA
987 if (td->error || td->terminate)
988 break;
989
e84c73a8
SL
990 if (!td->o.do_verify ||
991 td->o.verify == VERIFY_NONE ||
b67740d3 992 (td->io_ops->flags & FIO_UNIDIR))
ebac4655
JA
993 continue;
994
a978ba68
JA
995 if (clear_io_state(td))
996 break;
997
02bcaa8c 998 fio_gettime(&td->start, NULL);
ebac4655
JA
999
1000 do_verify(td);
1001
69008999 1002 runtime[DDIR_READ] += utime_since_now(&td->start);
ebac4655
JA
1003
1004 if (td->error || td->terminate)
1005 break;
1006 }
1007
36dff966 1008 update_rusage_stat(td);
47f0cc48
YHJT
1009 td->ts.runtime[0] = (runtime[0] + 999) / 1000;
1010 td->ts.runtime[1] = (runtime[1] + 999) / 1000;
756867bd
JA
1011 td->ts.total_run_time = mtime_since_now(&td->epoch);
1012 td->ts.io_bytes[0] = td->io_bytes[0];
1013 td->ts.io_bytes[1] = td->io_bytes[1];
1014
1015 if (td->ts.bw_log)
1016 finish_log(td, td->ts.bw_log, "bw");
1017 if (td->ts.slat_log)
1018 finish_log(td, td->ts.slat_log, "slat");
1019 if (td->ts.clat_log)
1020 finish_log(td, td->ts.clat_log, "clat");
2dc1bbeb
JA
1021 if (td->o.exec_postrun) {
1022 if (system(td->o.exec_postrun) < 0)
1023 log_err("fio: postrun %s failed\n", td->o.exec_postrun);
69cfd7e0 1024 }
ebac4655
JA
1025
1026 if (exitall_on_terminate)
390c40e2 1027 terminate_threads(td->groupid);
ebac4655
JA
1028
1029err:
5bf13a5a 1030 if (td->error)
5921e80c 1031 printf("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
5ec10eaa 1032 td->verror);
24ffd2c2 1033 close_and_free_files(td);
2866c82d 1034 close_ioengine(td);
ebac4655 1035 cleanup_io_u(td);
f29b25a3
JA
1036
1037 /*
1038 * do this very late, it will log file closing as well
1039 */
1040 if (td->o.write_iolog_file)
1041 write_iolog_close(td);
1042
d23bb327 1043 options_mem_free(td);
ebac4655 1044 td_set_runstate(td, TD_EXITED);
43d76807 1045 return (void *) (unsigned long) td->error;
ebac4655
JA
1046}
1047
906c8d75
JA
1048/*
1049 * We cannot pass the td data into a forked process, so attach the td and
1050 * pass it to the thread worker.
1051 */
a6418147 1052static int fork_main(int shmid, int offset)
ebac4655
JA
1053{
1054 struct thread_data *td;
a6418147 1055 void *data, *ret;
ebac4655
JA
1056
1057 data = shmat(shmid, NULL, 0);
1058 if (data == (void *) -1) {
a6418147
JA
1059 int __err = errno;
1060
ebac4655 1061 perror("shmat");
a6418147 1062 return __err;
ebac4655
JA
1063 }
1064
1065 td = data + offset * sizeof(struct thread_data);
a6418147 1066 ret = thread_main(td);
ebac4655 1067 shmdt(data);
43d76807 1068 return (int) (unsigned long) ret;
ebac4655
JA
1069}
1070
906c8d75
JA
1071/*
1072 * Run over the job map and reap the threads that have exited, if any.
1073 */
ebac4655
JA
1074static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
1075{
34572e28 1076 struct thread_data *td;
1f809d15 1077 int i, cputhreads, realthreads, pending, status, ret;
ebac4655
JA
1078
1079 /*
1080 * reap exited threads (TD_EXITED -> TD_REAPED)
1081 */
1f809d15 1082 realthreads = pending = cputhreads = 0;
34572e28 1083 for_each_td(td, i) {
3707f45b 1084 int flags = 0;
a2f77c9f 1085
84585003
JA
1086 /*
1087 * ->io_ops is NULL for a thread that has closed its
1088 * io engine
1089 */
ba0fbe10 1090 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
b990b5c0 1091 cputhreads++;
1f809d15
JA
1092 else
1093 realthreads++;
b990b5c0 1094
a1dedc1f
AC
1095 if (!td->pid) {
1096 pending++;
1097 continue;
1098 }
1099 if (td->runstate == TD_REAPED)
a2f77c9f 1100 continue;
2dc1bbeb 1101 if (td->o.use_thread) {
3707f45b
JA
1102 if (td->runstate == TD_EXITED) {
1103 td_set_runstate(td, TD_REAPED);
1104 goto reaped;
1105 }
1106 continue;
1107 }
a2f77c9f
JA
1108
1109 flags = WNOHANG;
1110 if (td->runstate == TD_EXITED)
1111 flags = 0;
1112
1113 /*
1114 * check if someone quit or got killed in an unusual way
1115 */
1116 ret = waitpid(td->pid, &status, flags);
3707f45b 1117 if (ret < 0) {
a2f77c9f 1118 if (errno == ECHILD) {
5921e80c
JA
1119 log_err("fio: pid=%d disappeared %d\n",
1120 (int) td->pid, td->runstate);
a2f77c9f
JA
1121 td_set_runstate(td, TD_REAPED);
1122 goto reaped;
1123 }
1124 perror("waitpid");
1125 } else if (ret == td->pid) {
1126 if (WIFSIGNALED(status)) {
fab6aa71
JA
1127 int sig = WTERMSIG(status);
1128
d9244941 1129 if (sig != SIGQUIT)
5ec10eaa 1130 log_err("fio: pid=%d, got signal=%d\n",
5921e80c 1131 (int) td->pid, sig);
fab6aa71
JA
1132 td_set_runstate(td, TD_REAPED);
1133 goto reaped;
1134 }
a2f77c9f
JA
1135 if (WIFEXITED(status)) {
1136 if (WEXITSTATUS(status) && !td->error)
1137 td->error = WEXITSTATUS(status);
a2f77c9f 1138
a2f77c9f
JA
1139 td_set_runstate(td, TD_REAPED);
1140 goto reaped;
a6418147
JA
1141 }
1142 }
ebac4655 1143
a2f77c9f
JA
1144 /*
1145 * thread is not dead, continue
1146 */
e48676ba 1147 pending++;
a2f77c9f 1148 continue;
fab6aa71 1149reaped:
ebac4655 1150 (*nr_running)--;
2dc1bbeb
JA
1151 (*m_rate) -= td->o.ratemin;
1152 (*t_rate) -= td->o.rate;
6f88bcb0
JA
1153 if (!td->pid)
1154 pending--;
a2f77c9f
JA
1155
1156 if (td->error)
1157 exit_value++;
d3eeeabc
JA
1158
1159 done_secs += mtime_since_now(&td->epoch) / 1000;
ebac4655 1160 }
b990b5c0 1161
1f809d15 1162 if (*nr_running == cputhreads && !pending && realthreads)
390c40e2 1163 terminate_threads(TERMINATE_ALL);
ebac4655
JA
1164}
1165
906c8d75
JA
1166/*
1167 * Main function for kicking off and reaping jobs, as needed.
1168 */
ebac4655
JA
1169static void run_threads(void)
1170{
ebac4655
JA
1171 struct thread_data *td;
1172 unsigned long spent;
1173 int i, todo, nr_running, m_rate, t_rate, nr_started;
fcb6ade2 1174
2f9ade3c
JA
1175 if (fio_pin_memory())
1176 return;
ebac4655 1177
c6ae0a5b 1178 if (!terse_output) {
9cedf167
JA
1179 printf("Starting ");
1180 if (nr_thread)
5ec10eaa
JA
1181 printf("%d thread%s", nr_thread,
1182 nr_thread > 1 ? "s" : "");
9cedf167
JA
1183 if (nr_process) {
1184 if (nr_thread)
1185 printf(" and ");
5ec10eaa
JA
1186 printf("%d process%s", nr_process,
1187 nr_process > 1 ? "es" : "");
9cedf167
JA
1188 }
1189 printf("\n");
c6ae0a5b
JA
1190 fflush(stdout);
1191 }
c04f7ec3 1192
697a606c 1193 set_sig_handlers();
4efa970e 1194
ebac4655
JA
1195 todo = thread_number;
1196 nr_running = 0;
1197 nr_started = 0;
1198 m_rate = t_rate = 0;
1199
34572e28 1200 for_each_td(td, i) {
263e529f 1201 print_status_init(td->thread_number - 1);
ebac4655 1202
2dc1bbeb 1203 if (!td->o.create_serialize) {
380cf265 1204 init_disk_util(td);
ebac4655 1205 continue;
380cf265 1206 }
ebac4655
JA
1207
1208 /*
1209 * do file setup here so it happens sequentially,
1210 * we don't want X number of threads getting their
1211 * client data interspersed on disk
1212 */
53cdc686 1213 if (setup_files(td)) {
5bf13a5a
JA
1214 exit_value++;
1215 if (td->error)
5921e80c
JA
1216 log_err("fio: pid=%d, err=%d/%s\n",
1217 (int) td->pid, td->error, td->verror);
ebac4655
JA
1218 td_set_runstate(td, TD_REAPED);
1219 todo--;
c69e8875
JA
1220 } else {
1221 struct fio_file *f;
1222 unsigned int i;
1223
1224 /*
1225 * for sharing to work, each job must always open
1226 * its own files. so close them, if we opened them
1227 * for creation
1228 */
1229 for_each_file(td, f, i)
1230 td_io_close_file(td, f);
5ec10eaa 1231 }
380cf265
JA
1232
1233 init_disk_util(td);
ebac4655
JA
1234 }
1235
a2f77c9f
JA
1236 set_genesis_time();
1237
ebac4655 1238 while (todo) {
75154845
JA
1239 struct thread_data *map[MAX_JOBS];
1240 struct timeval this_start;
1241 int this_jobs = 0, left;
1242
ebac4655
JA
1243 /*
1244 * create threads (TD_NOT_CREATED -> TD_CREATED)
1245 */
34572e28 1246 for_each_td(td, i) {
ebac4655
JA
1247 if (td->runstate != TD_NOT_CREATED)
1248 continue;
1249
1250 /*
1251 * never got a chance to start, killed by other
1252 * thread for some reason
1253 */
1254 if (td->terminate) {
1255 todo--;
1256 continue;
1257 }
1258
2dc1bbeb 1259 if (td->o.start_delay) {
263e529f 1260 spent = mtime_since_genesis();
ebac4655 1261
2dc1bbeb 1262 if (td->o.start_delay * 1000 > spent)
ebac4655
JA
1263 continue;
1264 }
1265
6f88bcb0
JA
1266 if (td->o.stonewall && (nr_started || nr_running)) {
1267 dprint(FD_PROCESS, "%s: stonewall wait\n",
1268 td->o.name);
ebac4655 1269 break;
6f88bcb0 1270 }
ebac4655 1271
75154845
JA
1272 /*
1273 * Set state to created. Thread will transition
1274 * to TD_INITIALIZED when it's done setting up.
1275 */
ebac4655 1276 td_set_runstate(td, TD_CREATED);
75154845 1277 map[this_jobs++] = td;
ebac4655
JA
1278 nr_started++;
1279
2dc1bbeb 1280 if (td->o.use_thread) {
ee56ad50 1281 dprint(FD_PROCESS, "will pthread_create\n");
5ec10eaa
JA
1282 if (pthread_create(&td->thread, NULL,
1283 thread_main, td)) {
f4705a73 1284 perror("pthread_create");
ebac4655 1285 nr_started--;
c8bb6faf 1286 break;
ebac4655 1287 }
f4705a73
JA
1288 if (pthread_detach(td->thread) < 0)
1289 perror("pthread_detach");
ebac4655 1290 } else {
5e1d306e 1291 pid_t pid;
ee56ad50 1292 dprint(FD_PROCESS, "will fork\n");
5e1d306e
JA
1293 pid = fork();
1294 if (!pid) {
a6418147
JA
1295 int ret = fork_main(shm_id, i);
1296
5e1d306e
JA
1297 _exit(ret);
1298 } else if (i == fio_debug_jobno)
1299 *fio_debug_jobp = pid;
ebac4655 1300 }
cdd18ad8 1301 fio_mutex_down(startup_mutex);
ebac4655
JA
1302 }
1303
1304 /*
75154845
JA
1305 * Wait for the started threads to transition to
1306 * TD_INITIALIZED.
ebac4655 1307 */
02bcaa8c 1308 fio_gettime(&this_start, NULL);
75154845 1309 left = this_jobs;
6ce15a32 1310 while (left && !fio_abort) {
75154845
JA
1311 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
1312 break;
1313
1314 usleep(100000);
1315
1316 for (i = 0; i < this_jobs; i++) {
1317 td = map[i];
1318 if (!td)
1319 continue;
b6f4d880 1320 if (td->runstate == TD_INITIALIZED) {
75154845
JA
1321 map[i] = NULL;
1322 left--;
b6f4d880
JA
1323 } else if (td->runstate >= TD_EXITED) {
1324 map[i] = NULL;
1325 left--;
1326 todo--;
1327 nr_running++; /* work-around... */
75154845
JA
1328 }
1329 }
1330 }
1331
1332 if (left) {
3b70d7e5 1333 log_err("fio: %d jobs failed to start\n", left);
75154845
JA
1334 for (i = 0; i < this_jobs; i++) {
1335 td = map[i];
1336 if (!td)
1337 continue;
1338 kill(td->pid, SIGTERM);
1339 }
1340 break;
1341 }
1342
1343 /*
b6f4d880 1344 * start created threads (TD_INITIALIZED -> TD_RUNNING).
75154845 1345 */
34572e28 1346 for_each_td(td, i) {
75154845 1347 if (td->runstate != TD_INITIALIZED)
ebac4655
JA
1348 continue;
1349
1350 td_set_runstate(td, TD_RUNNING);
1351 nr_running++;
1352 nr_started--;
2dc1bbeb
JA
1353 m_rate += td->o.ratemin;
1354 t_rate += td->o.rate;
75154845 1355 todo--;
cdd18ad8 1356 fio_mutex_up(td->mutex);
ebac4655
JA
1357 }
1358
1359 reap_threads(&nr_running, &t_rate, &m_rate);
1360
1361 if (todo)
1362 usleep(100000);
1363 }
1364
1365 while (nr_running) {
1366 reap_threads(&nr_running, &t_rate, &m_rate);
1367 usleep(10000);
1368 }
1369
1370 update_io_ticks();
2f9ade3c 1371 fio_unpin_memory();
ebac4655
JA
1372}
1373
ebac4655
JA
1374int main(int argc, char *argv[])
1375{
29d610e1
JA
1376 long ps;
1377
2e5cdb11
JA
1378 sinit();
1379
dbe1125e
JA
1380 /*
1381 * We need locale for number printing, if it isn't set then just
1382 * go with the US format.
1383 */
1384 if (!getenv("LC_NUMERIC"))
1385 setlocale(LC_NUMERIC, "en_US");
1386
ebac4655
JA
1387 if (parse_options(argc, argv))
1388 return 1;
1389
4b472fa3
JA
1390 if (!thread_number)
1391 return 0;
ebac4655 1392
29d610e1
JA
1393 ps = sysconf(_SC_PAGESIZE);
1394 if (ps < 0) {
1395 log_err("Failed to get page size\n");
1396 return 1;
1397 }
1398
cfc99db7 1399 page_size = ps;
29d610e1
JA
1400 page_mask = ps - 1;
1401
bb3884d8
JA
1402 if (write_bw_log) {
1403 setup_log(&agg_io_log[DDIR_READ]);
1404 setup_log(&agg_io_log[DDIR_WRITE]);
1405 }
1406
cdd18ad8 1407 startup_mutex = fio_mutex_init(0);
07739b57 1408
a2f77c9f
JA
1409 set_genesis_time();
1410
ccb0fa24 1411 status_timer_arm();
ebac4655
JA
1412
1413 run_threads();
6ce15a32 1414
bb3884d8 1415 if (!fio_abort) {
6ce15a32 1416 show_run_stats();
bb3884d8 1417 if (write_bw_log) {
5ec10eaa
JA
1418 __finish_log(agg_io_log[DDIR_READ], "agg-read_bw.log");
1419 __finish_log(agg_io_log[DDIR_WRITE],
1420 "agg-write_bw.log");
bb3884d8
JA
1421 }
1422 }
ebac4655 1423
cdd18ad8 1424 fio_mutex_remove(startup_mutex);
437c9b71 1425 return exit_value;
ebac4655 1426}