blob: 12e562b2a369fc9338001d7b8e8f4254704bf4f6 [file] [log] [blame]
Jens Axboe2e1df072012-02-09 11:15:02 +01001/*
2 * fio - the flexible io tester
3 *
4 * Copyright (C) 2005 Jens Axboe <axboe@suse.de>
5 * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
6 *
7 * The license below covers all files distributed with fio unless otherwise
8 * noted in the file itself.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
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 */
24#include <unistd.h>
25#include <fcntl.h>
26#include <string.h>
27#include <limits.h>
28#include <signal.h>
29#include <time.h>
30#include <locale.h>
31#include <assert.h>
32#include <time.h>
Bruce Crane43606c2012-02-20 09:34:24 +010033#include <inttypes.h>
Jens Axboe2e1df072012-02-09 11:15:02 +010034#include <sys/stat.h>
35#include <sys/wait.h>
36#include <sys/ipc.h>
Jens Axboe2e1df072012-02-09 11:15:02 +010037#include <sys/mman.h>
38
39#include "fio.h"
Olega5e0ee12013-03-12 00:06:53 -070040#ifndef FIO_NO_HAVE_SHM_H
41#include <sys/shm.h>
42#endif
Jens Axboe2e1df072012-02-09 11:15:02 +010043#include "hash.h"
44#include "smalloc.h"
45#include "verify.h"
46#include "trim.h"
47#include "diskutil.h"
48#include "cgroup.h"
49#include "profile.h"
50#include "lib/rand.h"
51#include "memalign.h"
52#include "server.h"
Jens Axboe44404c52013-01-24 14:20:09 -070053#include "lib/getrusage.h"
Huadong Liuf2a2ce02013-01-30 13:22:24 +010054#include "idletime.h"
Jens Axboe002fe732014-02-11 08:31:13 -070055#include "err.h"
Jens Axboe2e1df072012-02-09 11:15:02 +010056
57static pthread_t disk_util_thread;
Jens Axboe9ec77792012-08-02 08:27:41 +020058static struct fio_mutex *disk_thread_mutex;
Jens Axboe2e1df072012-02-09 11:15:02 +010059static struct fio_mutex *startup_mutex;
Jens Axboe2e1df072012-02-09 11:15:02 +010060static struct flist_head *cgroup_list;
61static char *cgroup_mnt;
62static int exit_value;
63static volatile int fio_abort;
Jens Axboe3a5f6bd2013-04-11 12:04:38 +020064static unsigned int nr_process = 0;
65static unsigned int nr_thread = 0;
Jens Axboe2e1df072012-02-09 11:15:02 +010066
Shaohua Li6eaf09d2012-09-14 08:49:43 +020067struct io_log *agg_io_log[DDIR_RWDIR_CNT];
Jens Axboe2e1df072012-02-09 11:15:02 +010068
Jens Axboea3efc912012-02-09 11:25:24 +010069int groupid = 0;
70unsigned int thread_number = 0;
Jens Axboe108fea72012-11-14 13:09:45 -070071unsigned int stat_number = 0;
Jens Axboea3efc912012-02-09 11:25:24 +010072int shm_id = 0;
73int temp_stall_ts;
74unsigned long done_secs = 0;
Jens Axboe27357182012-09-27 11:31:50 +020075volatile int disk_util_exit = 0;
Jens Axboea3efc912012-02-09 11:25:24 +010076
Jens Axboe2e1df072012-02-09 11:15:02 +010077#define PAGE_ALIGN(buf) \
Bruce Crane43606c2012-02-20 09:34:24 +010078 (char *) (((uintptr_t) (buf) + page_mask) & ~page_mask)
Jens Axboe2e1df072012-02-09 11:15:02 +010079
80#define JOB_START_TIMEOUT (5 * 1000)
81
82static void sig_int(int sig)
83{
84 if (threads) {
85 if (is_backend)
86 fio_server_got_signal(sig);
87 else {
88 log_info("\nfio: terminating on signal %d\n", sig);
89 fflush(stdout);
90 exit_value = 128;
91 }
92
93 fio_terminate_threads(TERMINATE_ALL);
94 }
95}
96
Jens Axboe4c6d91e2012-03-30 10:30:35 +020097static void sig_show_status(int sig)
98{
99 show_running_run_stats();
100}
101
Jens Axboe2e1df072012-02-09 11:15:02 +0100102static void set_sig_handlers(void)
103{
104 struct sigaction act;
105
106 memset(&act, 0, sizeof(act));
107 act.sa_handler = sig_int;
108 act.sa_flags = SA_RESTART;
109 sigaction(SIGINT, &act, NULL);
110
111 memset(&act, 0, sizeof(act));
112 act.sa_handler = sig_int;
113 act.sa_flags = SA_RESTART;
114 sigaction(SIGTERM, &act, NULL);
115
Bruce Cran2f694502012-10-10 16:34:13 +0100116/* Windows uses SIGBREAK as a quit signal from other applications */
117#ifdef WIN32
118 memset(&act, 0, sizeof(act));
119 act.sa_handler = sig_int;
120 act.sa_flags = SA_RESTART;
121 sigaction(SIGBREAK, &act, NULL);
122#endif
123
Jens Axboe4c6d91e2012-03-30 10:30:35 +0200124 memset(&act, 0, sizeof(act));
125 act.sa_handler = sig_show_status;
126 act.sa_flags = SA_RESTART;
127 sigaction(SIGUSR1, &act, NULL);
128
Jens Axboe2e1df072012-02-09 11:15:02 +0100129 if (is_backend) {
130 memset(&act, 0, sizeof(act));
131 act.sa_handler = sig_int;
132 act.sa_flags = SA_RESTART;
133 sigaction(SIGPIPE, &act, NULL);
134 }
135}
136
137/*
138 * Check if we are above the minimum rate given.
139 */
140static int __check_min_rate(struct thread_data *td, struct timeval *now,
141 enum fio_ddir ddir)
142{
143 unsigned long long bytes = 0;
144 unsigned long iops = 0;
145 unsigned long spent;
146 unsigned long rate;
147 unsigned int ratemin = 0;
148 unsigned int rate_iops = 0;
149 unsigned int rate_iops_min = 0;
150
151 assert(ddir_rw(ddir));
152
153 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
154 return 0;
155
156 /*
157 * allow a 2 second settle period in the beginning
158 */
159 if (mtime_since(&td->start, now) < 2000)
160 return 0;
161
162 iops += td->this_io_blocks[ddir];
163 bytes += td->this_io_bytes[ddir];
164 ratemin += td->o.ratemin[ddir];
165 rate_iops += td->o.rate_iops[ddir];
166 rate_iops_min += td->o.rate_iops_min[ddir];
167
168 /*
169 * if rate blocks is set, sample is running
170 */
171 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
172 spent = mtime_since(&td->lastrate[ddir], now);
173 if (spent < td->o.ratecycle)
174 return 0;
175
176 if (td->o.rate[ddir]) {
177 /*
178 * check bandwidth specified rate
179 */
180 if (bytes < td->rate_bytes[ddir]) {
181 log_err("%s: min rate %u not met\n", td->o.name,
182 ratemin);
183 return 1;
184 } else {
Jens Axboe49cba9b2014-04-14 09:51:10 -0600185 if (spent)
186 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
187 else
188 rate = 0;
189
Jens Axboe2e1df072012-02-09 11:15:02 +0100190 if (rate < ratemin ||
191 bytes < td->rate_bytes[ddir]) {
192 log_err("%s: min rate %u not met, got"
193 " %luKB/sec\n", td->o.name,
194 ratemin, rate);
195 return 1;
196 }
197 }
198 } else {
199 /*
200 * checks iops specified rate
201 */
202 if (iops < rate_iops) {
203 log_err("%s: min iops rate %u not met\n",
204 td->o.name, rate_iops);
205 return 1;
206 } else {
Jens Axboe4c707a32014-04-15 08:26:57 -0600207 if (spent)
208 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
209 else
210 rate = 0;
211
Jens Axboe2e1df072012-02-09 11:15:02 +0100212 if (rate < rate_iops_min ||
213 iops < td->rate_blocks[ddir]) {
214 log_err("%s: min iops rate %u not met,"
215 " got %lu\n", td->o.name,
216 rate_iops_min, rate);
217 }
218 }
219 }
220 }
221
222 td->rate_bytes[ddir] = bytes;
223 td->rate_blocks[ddir] = iops;
224 memcpy(&td->lastrate[ddir], now, sizeof(*now));
225 return 0;
226}
227
228static int check_min_rate(struct thread_data *td, struct timeval *now,
Jens Axboe100f49f2013-01-23 10:15:57 -0700229 uint64_t *bytes_done)
Jens Axboe2e1df072012-02-09 11:15:02 +0100230{
231 int ret = 0;
232
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200233 if (bytes_done[DDIR_READ])
234 ret |= __check_min_rate(td, now, DDIR_READ);
235 if (bytes_done[DDIR_WRITE])
236 ret |= __check_min_rate(td, now, DDIR_WRITE);
237 if (bytes_done[DDIR_TRIM])
238 ret |= __check_min_rate(td, now, DDIR_TRIM);
Jens Axboe2e1df072012-02-09 11:15:02 +0100239
240 return ret;
241}
242
243/*
244 * When job exits, we can cancel the in-flight IO if we are using async
245 * io. Attempt to do so.
246 */
247static void cleanup_pending_aio(struct thread_data *td)
248{
Jens Axboe2e1df072012-02-09 11:15:02 +0100249 int r;
250
251 /*
252 * get immediately available events, if any
253 */
254 r = io_u_queued_complete(td, 0, NULL);
255 if (r < 0)
256 return;
257
258 /*
259 * now cancel remaining active events
260 */
261 if (td->io_ops->cancel) {
Jens Axboe2ae0b202013-05-28 14:16:55 +0200262 struct io_u *io_u;
263 int i;
Jens Axboe2e1df072012-02-09 11:15:02 +0100264
Jens Axboe2ae0b202013-05-28 14:16:55 +0200265 io_u_qiter(&td->io_u_all, io_u, i) {
266 if (io_u->flags & IO_U_F_FLIGHT) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100267 r = td->io_ops->cancel(td, io_u);
268 if (!r)
269 put_io_u(td, io_u);
270 }
271 }
272 }
273
274 if (td->cur_depth)
275 r = io_u_queued_complete(td, td->cur_depth, NULL);
276}
277
278/*
279 * Helper to handle the final sync of a file. Works just like the normal
280 * io path, just does everything sync.
281 */
282static int fio_io_sync(struct thread_data *td, struct fio_file *f)
283{
284 struct io_u *io_u = __get_io_u(td);
285 int ret;
286
287 if (!io_u)
288 return 1;
289
290 io_u->ddir = DDIR_SYNC;
291 io_u->file = f;
292
293 if (td_io_prep(td, io_u)) {
294 put_io_u(td, io_u);
295 return 1;
296 }
297
298requeue:
299 ret = td_io_queue(td, io_u);
300 if (ret < 0) {
301 td_verror(td, io_u->error, "td_io_queue");
302 put_io_u(td, io_u);
303 return 1;
304 } else if (ret == FIO_Q_QUEUED) {
305 if (io_u_queued_complete(td, 1, NULL) < 0)
306 return 1;
307 } else if (ret == FIO_Q_COMPLETED) {
308 if (io_u->error) {
309 td_verror(td, io_u->error, "td_io_queue");
310 return 1;
311 }
312
313 if (io_u_sync_complete(td, io_u, NULL) < 0)
314 return 1;
315 } else if (ret == FIO_Q_BUSY) {
316 if (td_io_commit(td))
317 return 1;
318 goto requeue;
319 }
320
321 return 0;
322}
Jens Axboea3efc912012-02-09 11:25:24 +0100323
Jens Axboe61ee0f82013-02-11 11:26:55 +0100324static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
325{
326 int ret;
327
328 if (fio_file_open(f))
329 return fio_io_sync(td, f);
330
331 if (td_io_open_file(td, f))
332 return 1;
333
334 ret = fio_io_sync(td, f);
335 td_io_close_file(td, f);
336 return ret;
337}
338
Jens Axboe2e1df072012-02-09 11:15:02 +0100339static inline void __update_tv_cache(struct thread_data *td)
340{
341 fio_gettime(&td->tv_cache, NULL);
342}
343
344static inline void update_tv_cache(struct thread_data *td)
345{
346 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
347 __update_tv_cache(td);
348}
349
350static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
351{
352 if (in_ramp_time(td))
353 return 0;
354 if (!td->o.timeout)
355 return 0;
Jens Axboe0de5b262014-02-21 15:26:01 -0800356 if (utime_since(&td->epoch, t) >= td->o.timeout)
Jens Axboe2e1df072012-02-09 11:15:02 +0100357 return 1;
358
359 return 0;
360}
361
362static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
363 int *retptr)
364{
365 int ret = *retptr;
366
367 if (ret < 0 || td->error) {
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +0400368 int err = td->error;
369 enum error_type_bit eb;
Jens Axboe2e1df072012-02-09 11:15:02 +0100370
371 if (ret < 0)
372 err = -ret;
Jens Axboe2e1df072012-02-09 11:15:02 +0100373
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +0400374 eb = td_error_type(ddir, err);
375 if (!(td->o.continue_on_error & (1 << eb)))
Jens Axboe2e1df072012-02-09 11:15:02 +0100376 return 1;
377
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +0400378 if (td_non_fatal_error(td, eb, err)) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100379 /*
380 * Continue with the I/Os in case of
381 * a non fatal error.
382 */
383 update_error_count(td, err);
384 td_clear_error(td);
385 *retptr = 0;
386 return 0;
387 } else if (td->o.fill_device && err == ENOSPC) {
388 /*
389 * We expect to hit this error if
390 * fill_device option is set.
391 */
392 td_clear_error(td);
393 td->terminate = 1;
394 return 1;
395 } else {
396 /*
397 * Stop the I/O in case of a fatal
398 * error.
399 */
400 update_error_count(td, err);
401 return 1;
402 }
403 }
404
405 return 0;
406}
407
Jens Axboec97f1ad2013-03-28 15:08:49 -0600408static void check_update_rusage(struct thread_data *td)
409{
410 if (td->update_rusage) {
411 td->update_rusage = 0;
412 update_rusage_stat(td);
413 fio_mutex_up(td->rusage_sem);
414 }
415}
416
Jens Axboe2e1df072012-02-09 11:15:02 +0100417/*
418 * The main verify engine. Runs over the writes we previously submitted,
419 * reads the blocks back in, and checks the crc/md5 of the data.
420 */
Jens Axboe100f49f2013-01-23 10:15:57 -0700421static void do_verify(struct thread_data *td, uint64_t verify_bytes)
Jens Axboe2e1df072012-02-09 11:15:02 +0100422{
Jens Axboe100f49f2013-01-23 10:15:57 -0700423 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
Jens Axboe2e1df072012-02-09 11:15:02 +0100424 struct fio_file *f;
425 struct io_u *io_u;
426 int ret, min_events;
427 unsigned int i;
428
429 dprint(FD_VERIFY, "starting loop\n");
430
431 /*
432 * sync io first and invalidate cache, to make sure we really
433 * read from disk.
434 */
435 for_each_file(td, f, i) {
436 if (!fio_file_open(f))
437 continue;
438 if (fio_io_sync(td, f))
439 break;
440 if (file_invalidate_cache(td, f))
441 break;
442 }
443
Jens Axboec97f1ad2013-03-28 15:08:49 -0600444 check_update_rusage(td);
445
Jens Axboe2e1df072012-02-09 11:15:02 +0100446 if (td->error)
447 return;
448
449 td_set_runstate(td, TD_VERIFYING);
450
451 io_u = NULL;
452 while (!td->terminate) {
Jens Axboefbccf462013-01-08 21:02:14 +0100453 enum fio_ddir ddir;
Jens Axboe2e1df072012-02-09 11:15:02 +0100454 int ret2, full;
455
456 update_tv_cache(td);
Jens Axboec97f1ad2013-03-28 15:08:49 -0600457 check_update_rusage(td);
Jens Axboe2e1df072012-02-09 11:15:02 +0100458
459 if (runtime_exceeded(td, &td->tv_cache)) {
460 __update_tv_cache(td);
461 if (runtime_exceeded(td, &td->tv_cache)) {
462 td->terminate = 1;
463 break;
464 }
465 }
466
Dan Ehrenberg9e684a42012-02-20 11:05:14 +0100467 if (flow_threshold_exceeded(td))
468 continue;
469
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700470 if (!td->o.experimental_verify) {
471 io_u = __get_io_u(td);
472 if (!io_u)
473 break;
Jens Axboe2e1df072012-02-09 11:15:02 +0100474
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700475 if (get_next_verify(td, io_u)) {
476 put_io_u(td, io_u);
477 break;
478 }
Jens Axboe2e1df072012-02-09 11:15:02 +0100479
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700480 if (td_io_prep(td, io_u)) {
481 put_io_u(td, io_u);
482 break;
483 }
484 } else {
Jens Axboe100f49f2013-01-23 10:15:57 -0700485 if (ddir_rw_sum(bytes_done) + td->o.rw_min_bs > verify_bytes)
486 break;
487
Jens Axboebcd5abf2013-01-23 09:27:25 -0700488 while ((io_u = get_io_u(td)) != NULL) {
Jens Axboe002fe732014-02-11 08:31:13 -0700489 if (IS_ERR(io_u)) {
490 io_u = NULL;
491 ret = FIO_Q_BUSY;
492 goto reap;
493 }
494
Jens Axboebcd5abf2013-01-23 09:27:25 -0700495 /*
496 * We are only interested in the places where
497 * we wrote or trimmed IOs. Turn those into
498 * reads for verification purposes.
499 */
500 if (io_u->ddir == DDIR_READ) {
501 /*
502 * Pretend we issued it for rwmix
503 * accounting
504 */
505 td->io_issues[DDIR_READ]++;
506 put_io_u(td, io_u);
507 continue;
508 } else if (io_u->ddir == DDIR_TRIM) {
509 io_u->ddir = DDIR_READ;
510 io_u->flags |= IO_U_F_TRIMMED;
511 break;
512 } else if (io_u->ddir == DDIR_WRITE) {
513 io_u->ddir = DDIR_READ;
514 break;
515 } else {
516 put_io_u(td, io_u);
517 continue;
518 }
519 }
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700520
Jens Axboebcd5abf2013-01-23 09:27:25 -0700521 if (!io_u)
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700522 break;
Jens Axboe2e1df072012-02-09 11:15:02 +0100523 }
524
525 if (td->o.verify_async)
526 io_u->end_io = verify_io_u_async;
527 else
528 io_u->end_io = verify_io_u;
529
Jens Axboefbccf462013-01-08 21:02:14 +0100530 ddir = io_u->ddir;
531
Jens Axboe2e1df072012-02-09 11:15:02 +0100532 ret = td_io_queue(td, io_u);
533 switch (ret) {
534 case FIO_Q_COMPLETED:
535 if (io_u->error) {
536 ret = -io_u->error;
537 clear_io_u(td, io_u);
538 } else if (io_u->resid) {
539 int bytes = io_u->xfer_buflen - io_u->resid;
540
541 /*
542 * zero read, fail
543 */
544 if (!bytes) {
545 td_verror(td, EIO, "full resid");
546 put_io_u(td, io_u);
547 break;
548 }
549
550 io_u->xfer_buflen = io_u->resid;
551 io_u->xfer_buf += bytes;
552 io_u->offset += bytes;
553
554 if (ddir_rw(io_u->ddir))
555 td->ts.short_io_u[io_u->ddir]++;
556
557 f = io_u->file;
558 if (io_u->offset == f->real_file_size)
559 goto sync_done;
560
561 requeue_io_u(td, &io_u);
562 } else {
563sync_done:
Jens Axboe100f49f2013-01-23 10:15:57 -0700564 ret = io_u_sync_complete(td, io_u, bytes_done);
Jens Axboe2e1df072012-02-09 11:15:02 +0100565 if (ret < 0)
566 break;
567 }
568 continue;
569 case FIO_Q_QUEUED:
570 break;
571 case FIO_Q_BUSY:
572 requeue_io_u(td, &io_u);
573 ret2 = td_io_commit(td);
574 if (ret2 < 0)
575 ret = ret2;
576 break;
577 default:
578 assert(ret < 0);
579 td_verror(td, -ret, "td_io_queue");
580 break;
581 }
582
Jens Axboefbccf462013-01-08 21:02:14 +0100583 if (break_on_this_error(td, ddir, &ret))
Jens Axboe2e1df072012-02-09 11:15:02 +0100584 break;
585
586 /*
587 * if we can queue more, do so. but check if there are
588 * completed io_u's first. Note that we can get BUSY even
589 * without IO queued, if the system is resource starved.
590 */
Jens Axboe002fe732014-02-11 08:31:13 -0700591reap:
Jens Axboe2e1df072012-02-09 11:15:02 +0100592 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
593 if (full || !td->o.iodepth_batch_complete) {
594 min_events = min(td->o.iodepth_batch_complete,
595 td->cur_depth);
Jens Axboe8a74b562012-03-16 13:55:50 +0100596 /*
597 * if the queue is full, we MUST reap at least 1 event
598 */
599 if (full && !min_events)
Jens Axboe2e1df072012-02-09 11:15:02 +0100600 min_events = 1;
601
602 do {
603 /*
604 * Reap required number of io units, if any,
605 * and do the verification on them through
606 * the callback handler
607 */
Jens Axboe100f49f2013-01-23 10:15:57 -0700608 if (io_u_queued_complete(td, min_events, bytes_done) < 0) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100609 ret = -1;
610 break;
611 }
612 } while (full && (td->cur_depth > td->o.iodepth_low));
613 }
614 if (ret < 0)
615 break;
616 }
617
Jens Axboec97f1ad2013-03-28 15:08:49 -0600618 check_update_rusage(td);
619
Jens Axboe2e1df072012-02-09 11:15:02 +0100620 if (!td->error) {
621 min_events = td->cur_depth;
622
623 if (min_events)
624 ret = io_u_queued_complete(td, min_events, NULL);
625 } else
626 cleanup_pending_aio(td);
627
628 td_set_runstate(td, TD_RUNNING);
629
630 dprint(FD_VERIFY, "exiting loop\n");
631}
632
Jens Axboe3939fe82014-03-11 20:16:38 -0600633static unsigned int exceeds_number_ios(struct thread_data *td)
634{
635 unsigned long long number_ios;
636
637 if (!td->o.number_ios)
638 return 0;
639
640 number_ios = ddir_rw_sum(td->this_io_blocks);
641 number_ios += td->io_u_queued + td->io_u_in_flight;
642
643 return number_ios >= td->o.number_ios;
644}
645
Jens Axboef7078f72012-03-07 09:24:05 +0100646static int io_bytes_exceeded(struct thread_data *td)
647{
648 unsigned long long bytes;
649
650 if (td_rw(td))
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200651 bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE];
Jens Axboef7078f72012-03-07 09:24:05 +0100652 else if (td_write(td))
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200653 bytes = td->this_io_bytes[DDIR_WRITE];
654 else if (td_read(td))
655 bytes = td->this_io_bytes[DDIR_READ];
Jens Axboef7078f72012-03-07 09:24:05 +0100656 else
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200657 bytes = td->this_io_bytes[DDIR_TRIM];
Jens Axboef7078f72012-03-07 09:24:05 +0100658
Jens Axboe3939fe82014-03-11 20:16:38 -0600659 return bytes >= td->o.size || exceeds_number_ios(td);
Jens Axboef7078f72012-03-07 09:24:05 +0100660}
661
Jens Axboe2e1df072012-02-09 11:15:02 +0100662/*
663 * Main IO worker function. It retrieves io_u's to process and queues
664 * and reaps them, checking for rate and errors along the way.
Jens Axboe100f49f2013-01-23 10:15:57 -0700665 *
666 * Returns number of bytes written and trimmed.
Jens Axboe2e1df072012-02-09 11:15:02 +0100667 */
Jens Axboe100f49f2013-01-23 10:15:57 -0700668static uint64_t do_io(struct thread_data *td)
Jens Axboe2e1df072012-02-09 11:15:02 +0100669{
Jens Axboe100f49f2013-01-23 10:15:57 -0700670 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
Jens Axboe2e1df072012-02-09 11:15:02 +0100671 unsigned int i;
672 int ret = 0;
Jens Axboec2703bf2014-02-05 12:36:02 -0700673 uint64_t total_bytes, bytes_issued = 0;
Jens Axboe2e1df072012-02-09 11:15:02 +0100674
675 if (in_ramp_time(td))
676 td_set_runstate(td, TD_RAMP);
677 else
678 td_set_runstate(td, TD_RUNNING);
679
Jens Axboe3e260a42013-12-09 12:38:53 -0700680 lat_target_init(td);
681
Jens Axboe78a64692014-02-05 13:15:22 -0700682 /*
683 * If verify_backlog is enabled, we'll run the verify in this
684 * handler as well. For that case, we may need up to twice the
685 * amount of bytes.
686 */
Jens Axboec2703bf2014-02-05 12:36:02 -0700687 total_bytes = td->o.size;
Jens Axboe78a64692014-02-05 13:15:22 -0700688 if (td->o.verify != VERIFY_NONE &&
689 (td_write(td) && td->o.verify_backlog))
Jens Axboec2703bf2014-02-05 12:36:02 -0700690 total_bytes += td->o.size;
691
Jens Axboef7078f72012-03-07 09:24:05 +0100692 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
Daniel Ehrenbergc04e4662012-03-16 18:54:15 +0100693 (!flist_empty(&td->trim_list)) || !io_bytes_exceeded(td) ||
694 td->o.time_based) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100695 struct timeval comp_time;
Jens Axboe2e1df072012-02-09 11:15:02 +0100696 int min_evts = 0;
697 struct io_u *io_u;
698 int ret2, full;
699 enum fio_ddir ddir;
700
Jens Axboec97f1ad2013-03-28 15:08:49 -0600701 check_update_rusage(td);
702
Yufei Ren7d7803f2012-10-22 21:29:38 -0400703 if (td->terminate || td->done)
Jens Axboe2e1df072012-02-09 11:15:02 +0100704 break;
705
706 update_tv_cache(td);
707
708 if (runtime_exceeded(td, &td->tv_cache)) {
709 __update_tv_cache(td);
710 if (runtime_exceeded(td, &td->tv_cache)) {
711 td->terminate = 1;
712 break;
713 }
714 }
715
Dan Ehrenberg9e684a42012-02-20 11:05:14 +0100716 if (flow_threshold_exceeded(td))
717 continue;
718
Jens Axboec2703bf2014-02-05 12:36:02 -0700719 if (bytes_issued >= total_bytes)
Juan Casse20876c52013-09-16 09:22:10 -0700720 break;
721
Jens Axboe2e1df072012-02-09 11:15:02 +0100722 io_u = get_io_u(td);
Jens Axboe002fe732014-02-11 08:31:13 -0700723 if (IS_ERR_OR_NULL(io_u)) {
724 int err = PTR_ERR(io_u);
725
726 io_u = NULL;
727 if (err == -EBUSY) {
728 ret = FIO_Q_BUSY;
729 goto reap;
730 }
Jens Axboe3e260a42013-12-09 12:38:53 -0700731 if (td->o.latency_target)
732 goto reap;
Jens Axboe2e1df072012-02-09 11:15:02 +0100733 break;
Jens Axboe3e260a42013-12-09 12:38:53 -0700734 }
Jens Axboe2e1df072012-02-09 11:15:02 +0100735
736 ddir = io_u->ddir;
737
738 /*
Jens Axboe82af2a72012-03-13 13:45:58 +0100739 * Add verification end_io handler if:
740 * - Asked to verify (!td_rw(td))
741 * - Or the io_u is from our verify list (mixed write/ver)
Jens Axboe2e1df072012-02-09 11:15:02 +0100742 */
743 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
Jens Axboe82af2a72012-03-13 13:45:58 +0100744 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
Puthikorn Voravootivatc4b61172014-02-05 10:17:11 -0700745
746 if (!td->o.verify_pattern_bytes) {
747 io_u->rand_seed = __rand(&td->__verify_state);
748 if (sizeof(int) != sizeof(long *))
749 io_u->rand_seed *= __rand(&td->__verify_state);
750 }
751
Jens Axboe2e1df072012-02-09 11:15:02 +0100752 if (td->o.verify_async)
753 io_u->end_io = verify_io_u_async;
754 else
755 io_u->end_io = verify_io_u;
756 td_set_runstate(td, TD_VERIFYING);
757 } else if (in_ramp_time(td))
758 td_set_runstate(td, TD_RAMP);
759 else
760 td_set_runstate(td, TD_RUNNING);
761
Puthikorn Voravootivat9a50c5c2014-02-05 10:28:15 -0800762 /*
Jens Axboef9401282014-02-06 12:17:37 -0700763 * Always log IO before it's issued, so we know the specific
764 * order of it. The logged unit will track when the IO has
765 * completed.
Puthikorn Voravootivat9a50c5c2014-02-05 10:28:15 -0800766 */
Puthikorn Voravootivatc4b61172014-02-05 10:17:11 -0700767 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
768 td->o.do_verify &&
769 td->o.verify != VERIFY_NONE &&
Jens Axboef9401282014-02-06 12:17:37 -0700770 !td->o.experimental_verify)
Puthikorn Voravootivatc4b61172014-02-05 10:17:11 -0700771 log_io_piece(td, io_u);
772
Jens Axboe2e1df072012-02-09 11:15:02 +0100773 ret = td_io_queue(td, io_u);
774 switch (ret) {
775 case FIO_Q_COMPLETED:
776 if (io_u->error) {
777 ret = -io_u->error;
778 clear_io_u(td, io_u);
779 } else if (io_u->resid) {
780 int bytes = io_u->xfer_buflen - io_u->resid;
781 struct fio_file *f = io_u->file;
782
Juan Casse20876c52013-09-16 09:22:10 -0700783 bytes_issued += bytes;
Jens Axboe2e1df072012-02-09 11:15:02 +0100784 /*
785 * zero read, fail
786 */
787 if (!bytes) {
788 td_verror(td, EIO, "full resid");
789 put_io_u(td, io_u);
790 break;
791 }
792
793 io_u->xfer_buflen = io_u->resid;
794 io_u->xfer_buf += bytes;
795 io_u->offset += bytes;
796
797 if (ddir_rw(io_u->ddir))
798 td->ts.short_io_u[io_u->ddir]++;
799
800 if (io_u->offset == f->real_file_size)
801 goto sync_done;
802
803 requeue_io_u(td, &io_u);
804 } else {
805sync_done:
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200806 if (__should_check_rate(td, DDIR_READ) ||
807 __should_check_rate(td, DDIR_WRITE) ||
808 __should_check_rate(td, DDIR_TRIM))
Jens Axboe2e1df072012-02-09 11:15:02 +0100809 fio_gettime(&comp_time, NULL);
810
811 ret = io_u_sync_complete(td, io_u, bytes_done);
812 if (ret < 0)
813 break;
Juan Casse20876c52013-09-16 09:22:10 -0700814 bytes_issued += io_u->xfer_buflen;
Jens Axboe2e1df072012-02-09 11:15:02 +0100815 }
816 break;
817 case FIO_Q_QUEUED:
818 /*
819 * if the engine doesn't have a commit hook,
820 * the io_u is really queued. if it does have such
821 * a hook, it has to call io_u_queued() itself.
822 */
823 if (td->io_ops->commit == NULL)
824 io_u_queued(td, io_u);
Juan Casse20876c52013-09-16 09:22:10 -0700825 bytes_issued += io_u->xfer_buflen;
Jens Axboe2e1df072012-02-09 11:15:02 +0100826 break;
827 case FIO_Q_BUSY:
828 requeue_io_u(td, &io_u);
829 ret2 = td_io_commit(td);
830 if (ret2 < 0)
831 ret = ret2;
832 break;
833 default:
834 assert(ret < 0);
835 put_io_u(td, io_u);
836 break;
837 }
838
839 if (break_on_this_error(td, ddir, &ret))
840 break;
841
842 /*
843 * See if we need to complete some commands. Note that we
844 * can get BUSY even without IO queued, if the system is
845 * resource starved.
846 */
Jens Axboe3e260a42013-12-09 12:38:53 -0700847reap:
Jens Axboe2e1df072012-02-09 11:15:02 +0100848 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
849 if (full || !td->o.iodepth_batch_complete) {
850 min_evts = min(td->o.iodepth_batch_complete,
851 td->cur_depth);
Jens Axboe8a74b562012-03-16 13:55:50 +0100852 /*
853 * if the queue is full, we MUST reap at least 1 event
854 */
855 if (full && !min_evts)
Jens Axboe2e1df072012-02-09 11:15:02 +0100856 min_evts = 1;
857
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200858 if (__should_check_rate(td, DDIR_READ) ||
859 __should_check_rate(td, DDIR_WRITE) ||
860 __should_check_rate(td, DDIR_TRIM))
Jens Axboe2e1df072012-02-09 11:15:02 +0100861 fio_gettime(&comp_time, NULL);
862
863 do {
864 ret = io_u_queued_complete(td, min_evts, bytes_done);
865 if (ret < 0)
866 break;
867
868 } while (full && (td->cur_depth > td->o.iodepth_low));
869 }
870
871 if (ret < 0)
872 break;
Jens Axboed5abee02012-10-22 20:36:26 +0200873 if (!ddir_rw_sum(bytes_done) && !(td->io_ops->flags & FIO_NOIO))
Jens Axboe2e1df072012-02-09 11:15:02 +0100874 continue;
875
876 if (!in_ramp_time(td) && should_check_rate(td, bytes_done)) {
877 if (check_min_rate(td, &comp_time, bytes_done)) {
878 if (exitall_on_terminate)
879 fio_terminate_threads(td->groupid);
880 td_verror(td, EIO, "check_min_rate");
881 break;
882 }
883 }
Jens Axboe3e260a42013-12-09 12:38:53 -0700884 if (!in_ramp_time(td) && td->o.latency_target)
885 lat_target_check(td);
Jens Axboe2e1df072012-02-09 11:15:02 +0100886
887 if (td->o.thinktime) {
888 unsigned long long b;
889
Jens Axboe342f4be2012-09-14 08:59:20 +0200890 b = ddir_rw_sum(td->io_blocks);
Jens Axboe2e1df072012-02-09 11:15:02 +0100891 if (!(b % td->o.thinktime_blocks)) {
892 int left;
893
Jens Axboe002e7182013-05-17 12:39:53 +0200894 io_u_quiesce(td);
895
Jens Axboe2e1df072012-02-09 11:15:02 +0100896 if (td->o.thinktime_spin)
897 usec_spin(td->o.thinktime_spin);
898
899 left = td->o.thinktime - td->o.thinktime_spin;
900 if (left)
901 usec_sleep(td, left);
902 }
903 }
904 }
905
Jens Axboec97f1ad2013-03-28 15:08:49 -0600906 check_update_rusage(td);
907
Jens Axboe2e1df072012-02-09 11:15:02 +0100908 if (td->trim_entries)
Jens Axboe4e0a8fa2013-04-15 11:40:57 +0200909 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
Jens Axboe2e1df072012-02-09 11:15:02 +0100910
911 if (td->o.fill_device && td->error == ENOSPC) {
912 td->error = 0;
913 td->terminate = 1;
914 }
915 if (!td->error) {
916 struct fio_file *f;
917
918 i = td->cur_depth;
919 if (i) {
Jens Axboe5bd5f712013-02-03 14:20:44 +0100920 ret = io_u_queued_complete(td, i, bytes_done);
Jens Axboe2e1df072012-02-09 11:15:02 +0100921 if (td->o.fill_device && td->error == ENOSPC)
922 td->error = 0;
923 }
924
925 if (should_fsync(td) && td->o.end_fsync) {
926 td_set_runstate(td, TD_FSYNCING);
927
928 for_each_file(td, f, i) {
Jens Axboe61ee0f82013-02-11 11:26:55 +0100929 if (!fio_file_fsync(td, f))
Jens Axboe2e1df072012-02-09 11:15:02 +0100930 continue;
Jens Axboe61ee0f82013-02-11 11:26:55 +0100931
932 log_err("fio: end_fsync failed for file %s\n",
933 f->file_name);
Jens Axboe2e1df072012-02-09 11:15:02 +0100934 }
935 }
936 } else
937 cleanup_pending_aio(td);
938
939 /*
940 * stop job if we failed doing any IO
941 */
Jens Axboe342f4be2012-09-14 08:59:20 +0200942 if (!ddir_rw_sum(td->this_io_bytes))
Jens Axboe2e1df072012-02-09 11:15:02 +0100943 td->done = 1;
Jens Axboe100f49f2013-01-23 10:15:57 -0700944
945 return bytes_done[DDIR_WRITE] + bytes_done[DDIR_TRIM];
Jens Axboe2e1df072012-02-09 11:15:02 +0100946}
947
948static void cleanup_io_u(struct thread_data *td)
949{
Jens Axboe2e1df072012-02-09 11:15:02 +0100950 struct io_u *io_u;
951
Jens Axboe2ae0b202013-05-28 14:16:55 +0200952 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
Jens Axboec73ed242012-12-06 20:30:38 +0100953
954 if (td->io_ops->io_u_free)
955 td->io_ops->io_u_free(td, io_u);
956
Jens Axboe2e1df072012-02-09 11:15:02 +0100957 fio_memfree(io_u, sizeof(*io_u));
958 }
959
960 free_io_mem(td);
Jens Axboe2ae0b202013-05-28 14:16:55 +0200961
962 io_u_rexit(&td->io_u_requeues);
963 io_u_qexit(&td->io_u_freelist);
964 io_u_qexit(&td->io_u_all);
Jens Axboe2e1df072012-02-09 11:15:02 +0100965}
966
967static int init_io_u(struct thread_data *td)
968{
969 struct io_u *io_u;
Jens Axboe9c426842012-03-02 21:02:12 +0100970 unsigned int max_bs, min_write;
Jens Axboe2e1df072012-02-09 11:15:02 +0100971 int cl_align, i, max_units;
Jens Axboe2ae0b202013-05-28 14:16:55 +0200972 int data_xfer = 1, err;
Jens Axboe2e1df072012-02-09 11:15:02 +0100973 char *p;
974
975 max_units = td->o.iodepth;
Jens Axboe74f4b022013-03-22 22:56:55 -0600976 max_bs = td_max_bs(td);
Jens Axboe9c426842012-03-02 21:02:12 +0100977 min_write = td->o.min_bs[DDIR_WRITE];
Jens Axboe2e1df072012-02-09 11:15:02 +0100978 td->orig_buffer_size = (unsigned long long) max_bs
979 * (unsigned long long) max_units;
980
Dmitry Monakhov88045e02012-09-25 12:12:36 +0200981 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
Jens Axboe59d8d0f2012-09-24 14:25:33 +0200982 data_xfer = 0;
983
Jens Axboe2ae0b202013-05-28 14:16:55 +0200984 err = 0;
985 err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
986 err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
987 err += io_u_qinit(&td->io_u_all, td->o.iodepth);
988
989 if (err) {
990 log_err("fio: failed setting up IO queues\n");
991 return 1;
992 }
993
peter changfd8a09b2013-04-24 16:32:25 -0600994 /*
995 * if we may later need to do address alignment, then add any
996 * possible adjustment here so that we don't cause a buffer
997 * overflow later. this adjustment may be too much if we get
998 * lucky and the allocator gives us an aligned address.
999 */
Chris Masond01612f2013-11-15 15:52:58 -07001000 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1001 (td->io_ops->flags & FIO_RAWIO))
peter changfd8a09b2013-04-24 16:32:25 -06001002 td->orig_buffer_size += page_mask + td->o.mem_align;
1003
Jens Axboe2e1df072012-02-09 11:15:02 +01001004 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1005 unsigned long bs;
1006
1007 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1008 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1009 }
1010
1011 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1012 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1013 return 1;
1014 }
1015
Jens Axboe59d8d0f2012-09-24 14:25:33 +02001016 if (data_xfer && allocate_io_mem(td))
Jens Axboe2e1df072012-02-09 11:15:02 +01001017 return 1;
1018
Chris Masond01612f2013-11-15 15:52:58 -07001019 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
Jens Axboe2e1df072012-02-09 11:15:02 +01001020 (td->io_ops->flags & FIO_RAWIO))
1021 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
1022 else
1023 p = td->orig_buffer;
1024
1025 cl_align = os_cache_line_size();
1026
1027 for (i = 0; i < max_units; i++) {
1028 void *ptr;
1029
1030 if (td->terminate)
1031 return 1;
1032
1033 ptr = fio_memalign(cl_align, sizeof(*io_u));
1034 if (!ptr) {
1035 log_err("fio: unable to allocate aligned memory\n");
1036 break;
1037 }
1038
1039 io_u = ptr;
1040 memset(io_u, 0, sizeof(*io_u));
Jens Axboe2ae0b202013-05-28 14:16:55 +02001041 INIT_FLIST_HEAD(&io_u->verify_list);
Jens Axboe2e1df072012-02-09 11:15:02 +01001042 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1043
Jens Axboe59d8d0f2012-09-24 14:25:33 +02001044 if (data_xfer) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001045 io_u->buf = p;
1046 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1047
1048 if (td_write(td))
Jens Axboe9c426842012-03-02 21:02:12 +01001049 io_u_fill_buffer(td, io_u, min_write, max_bs);
Jens Axboe2e1df072012-02-09 11:15:02 +01001050 if (td_write(td) && td->o.verify_pattern_bytes) {
1051 /*
1052 * Fill the buffer with the pattern if we are
1053 * going to be doing writes.
1054 */
Jens Axboece35b1e2014-01-14 15:35:58 -07001055 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
Jens Axboe2e1df072012-02-09 11:15:02 +01001056 }
1057 }
1058
1059 io_u->index = i;
1060 io_u->flags = IO_U_F_FREE;
Jens Axboe2ae0b202013-05-28 14:16:55 +02001061 io_u_qpush(&td->io_u_freelist, io_u);
1062
1063 /*
1064 * io_u never leaves this stack, used for iteration of all
1065 * io_u buffers.
1066 */
1067 io_u_qpush(&td->io_u_all, io_u);
Jens Axboec73ed242012-12-06 20:30:38 +01001068
1069 if (td->io_ops->io_u_init) {
1070 int ret = td->io_ops->io_u_init(td, io_u);
1071
1072 if (ret) {
1073 log_err("fio: failed to init engine data: %d\n", ret);
1074 return 1;
1075 }
1076 }
1077
Jens Axboe2e1df072012-02-09 11:15:02 +01001078 p += max_bs;
1079 }
1080
1081 return 0;
1082}
1083
1084static int switch_ioscheduler(struct thread_data *td)
1085{
1086 char tmp[256], tmp2[128];
1087 FILE *f;
1088 int ret;
1089
1090 if (td->io_ops->flags & FIO_DISKLESSIO)
1091 return 0;
1092
1093 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
1094
1095 f = fopen(tmp, "r+");
1096 if (!f) {
1097 if (errno == ENOENT) {
1098 log_err("fio: os or kernel doesn't support IO scheduler"
1099 " switching\n");
1100 return 0;
1101 }
1102 td_verror(td, errno, "fopen iosched");
1103 return 1;
1104 }
1105
1106 /*
1107 * Set io scheduler.
1108 */
1109 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1110 if (ferror(f) || ret != 1) {
1111 td_verror(td, errno, "fwrite");
1112 fclose(f);
1113 return 1;
1114 }
1115
1116 rewind(f);
1117
1118 /*
1119 * Read back and check that the selected scheduler is now the default.
1120 */
Jens Axboe49c6f332014-04-14 11:36:01 -06001121 ret = fread(tmp, sizeof(tmp), 1, f);
Jens Axboe2e1df072012-02-09 11:15:02 +01001122 if (ferror(f) || ret < 0) {
1123 td_verror(td, errno, "fread");
1124 fclose(f);
1125 return 1;
1126 }
Jens Axboe49c6f332014-04-14 11:36:01 -06001127 tmp[sizeof(tmp) - 1] = '\0';
1128
Jens Axboe2e1df072012-02-09 11:15:02 +01001129
1130 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1131 if (!strstr(tmp, tmp2)) {
1132 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1133 td_verror(td, EINVAL, "iosched_switch");
1134 fclose(f);
1135 return 1;
1136 }
1137
1138 fclose(f);
1139 return 0;
1140}
1141
1142static int keep_running(struct thread_data *td)
1143{
Jens Axboe2e1df072012-02-09 11:15:02 +01001144 if (td->done)
1145 return 0;
1146 if (td->o.time_based)
1147 return 1;
1148 if (td->o.loops) {
1149 td->o.loops--;
1150 return 1;
1151 }
Jens Axboe3939fe82014-03-11 20:16:38 -06001152 if (exceeds_number_ios(td))
1153 return 0;
Jens Axboe26251d82014-03-11 10:21:18 -06001154
Jens Axboeee98e232013-03-19 07:49:35 -06001155 if (td->o.size != -1ULL && ddir_rw_sum(td->io_bytes) < td->o.size) {
Jens Axboe5bd5f712013-02-03 14:20:44 +01001156 uint64_t diff;
1157
1158 /*
1159 * If the difference is less than the minimum IO size, we
1160 * are done.
1161 */
1162 diff = td->o.size - ddir_rw_sum(td->io_bytes);
Jens Axboe74f4b022013-03-22 22:56:55 -06001163 if (diff < td_max_bs(td))
Jens Axboe5bd5f712013-02-03 14:20:44 +01001164 return 0;
1165
Jens Axboe002fe732014-02-11 08:31:13 -07001166 if (fio_files_done(td))
1167 return 0;
1168
Jens Axboe2e1df072012-02-09 11:15:02 +01001169 return 1;
Jens Axboe5bd5f712013-02-03 14:20:44 +01001170 }
Jens Axboe2e1df072012-02-09 11:15:02 +01001171
1172 return 0;
1173}
1174
Erwan Veluce486492013-07-17 23:04:46 +02001175static int exec_string(struct thread_options *o, const char *string, const char *mode)
Jens Axboe2e1df072012-02-09 11:15:02 +01001176{
Erwan Veluce486492013-07-17 23:04:46 +02001177 int ret, newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
Jens Axboe2e1df072012-02-09 11:15:02 +01001178 char *str;
1179
1180 str = malloc(newlen);
Erwan Veluce486492013-07-17 23:04:46 +02001181 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
Jens Axboe2e1df072012-02-09 11:15:02 +01001182
Erwan Veluce486492013-07-17 23:04:46 +02001183 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
Jens Axboe2e1df072012-02-09 11:15:02 +01001184 ret = system(str);
1185 if (ret == -1)
1186 log_err("fio: exec of cmd <%s> failed\n", str);
1187
1188 free(str);
1189 return ret;
1190}
1191
1192/*
Juan Casse62167762013-09-17 14:06:13 -07001193 * Dry run to compute correct state of numberio for verification.
1194 */
1195static uint64_t do_dry_run(struct thread_data *td)
1196{
1197 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
1198
1199 td_set_runstate(td, TD_RUNNING);
1200
1201 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1202 (!flist_empty(&td->trim_list)) || !io_bytes_exceeded(td)) {
1203 struct io_u *io_u;
1204 int ret;
1205
1206 if (td->terminate || td->done)
1207 break;
1208
1209 io_u = get_io_u(td);
1210 if (!io_u)
1211 break;
1212
1213 io_u->flags |= IO_U_F_FLIGHT;
1214 io_u->error = 0;
1215 io_u->resid = 0;
1216 if (ddir_rw(acct_ddir(io_u)))
1217 td->io_issues[acct_ddir(io_u)]++;
1218 if (ddir_rw(io_u->ddir)) {
1219 io_u_mark_depth(td, 1);
1220 td->ts.total_io_u[io_u->ddir]++;
1221 }
1222
Puthikorn Voravootivat2e63e962014-03-03 15:33:32 -08001223 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1224 td->o.do_verify &&
1225 td->o.verify != VERIFY_NONE &&
1226 !td->o.experimental_verify)
1227 log_io_piece(td, io_u);
1228
Juan Casse62167762013-09-17 14:06:13 -07001229 ret = io_u_sync_complete(td, io_u, bytes_done);
1230 (void) ret;
1231 }
1232
1233 return bytes_done[DDIR_WRITE] + bytes_done[DDIR_TRIM];
1234}
1235
1236/*
Jens Axboe2e1df072012-02-09 11:15:02 +01001237 * Entry point for the thread based jobs. The process based jobs end up
1238 * here as well, after a little setup.
1239 */
1240static void *thread_main(void *data)
1241{
1242 unsigned long long elapsed;
1243 struct thread_data *td = data;
Jens Axboe48964732013-04-11 12:01:48 +02001244 struct thread_options *o = &td->o;
Jens Axboe2e1df072012-02-09 11:15:02 +01001245 pthread_condattr_t attr;
1246 int clear_state;
Jens Axboe28727df2012-03-29 08:33:15 +02001247 int ret;
Jens Axboe2e1df072012-02-09 11:15:02 +01001248
Jens Axboe48964732013-04-11 12:01:48 +02001249 if (!o->use_thread) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001250 setsid();
1251 td->pid = getpid();
1252 } else
1253 td->pid = gettid();
1254
Bruce Cran334185e2013-11-01 12:32:40 -06001255 /*
1256 * fio_time_init() may not have been called yet if running as a server
1257 */
1258 fio_time_init();
1259
Jens Axboe48964732013-04-11 12:01:48 +02001260 fio_local_clock_init(o->use_thread);
Jens Axboe5d879392012-12-18 09:12:27 +01001261
Jens Axboe2e1df072012-02-09 11:15:02 +01001262 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1263
Jens Axboe122c7722012-03-19 09:13:15 +01001264 if (is_backend)
1265 fio_server_send_start(td);
1266
Jens Axboe2e1df072012-02-09 11:15:02 +01001267 INIT_FLIST_HEAD(&td->io_log_list);
1268 INIT_FLIST_HEAD(&td->io_hist_list);
1269 INIT_FLIST_HEAD(&td->verify_list);
1270 INIT_FLIST_HEAD(&td->trim_list);
Jens Axboe1ae83d42013-01-12 01:44:15 -07001271 INIT_FLIST_HEAD(&td->next_rand_list);
Jens Axboe2e1df072012-02-09 11:15:02 +01001272 pthread_mutex_init(&td->io_u_lock, NULL);
1273 td->io_hist_tree = RB_ROOT;
1274
1275 pthread_condattr_init(&attr);
1276 pthread_cond_init(&td->verify_cond, &attr);
1277 pthread_cond_init(&td->free_cond, &attr);
1278
1279 td_set_runstate(td, TD_INITIALIZED);
1280 dprint(FD_MUTEX, "up startup_mutex\n");
1281 fio_mutex_up(startup_mutex);
1282 dprint(FD_MUTEX, "wait on td->mutex\n");
1283 fio_mutex_down(td->mutex);
1284 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1285
1286 /*
Jens Axboe2e1df072012-02-09 11:15:02 +01001287 * A new gid requires privilege, so we need to do this before setting
1288 * the uid.
1289 */
Jens Axboe48964732013-04-11 12:01:48 +02001290 if (o->gid != -1U && setgid(o->gid)) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001291 td_verror(td, errno, "setgid");
1292 goto err;
1293 }
Jens Axboe48964732013-04-11 12:01:48 +02001294 if (o->uid != -1U && setuid(o->uid)) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001295 td_verror(td, errno, "setuid");
1296 goto err;
1297 }
1298
1299 /*
1300 * If we have a gettimeofday() thread, make sure we exclude that
1301 * thread from this job
1302 */
Jens Axboe48964732013-04-11 12:01:48 +02001303 if (o->gtod_cpu)
1304 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
Jens Axboe2e1df072012-02-09 11:15:02 +01001305
1306 /*
1307 * Set affinity first, in case it has an impact on the memory
1308 * allocations.
1309 */
Jens Axboe48964732013-04-11 12:01:48 +02001310 if (o->cpumask_set) {
Jens Axboec2acfba2014-02-27 15:52:02 -08001311 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
Jens Axboe30cb4c62014-02-28 08:35:40 -08001312 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
Jens Axboec2acfba2014-02-27 15:52:02 -08001313 if (!ret) {
1314 log_err("fio: no CPUs set\n");
1315 log_err("fio: Try increasing number of available CPUs\n");
1316 td_verror(td, EINVAL, "cpus_split");
1317 goto err;
1318 }
1319 }
Jens Axboe28727df2012-03-29 08:33:15 +02001320 ret = fio_setaffinity(td->pid, o->cpumask);
1321 if (ret == -1) {
Jens Axboe48964732013-04-11 12:01:48 +02001322 td_verror(td, errno, "cpu_set_affinity");
1323 goto err;
1324 }
Jens Axboe2e1df072012-02-09 11:15:02 +01001325 }
1326
Jens Axboe67bf9822013-01-10 11:23:19 +01001327#ifdef CONFIG_LIBNUMA
Yufei Rend0b937e2012-10-19 23:11:52 -04001328 /* numa node setup */
Jens Axboe48964732013-04-11 12:01:48 +02001329 if (o->numa_cpumask_set || o->numa_memmask_set) {
Yufei Rend0b937e2012-10-19 23:11:52 -04001330 int ret;
1331
1332 if (numa_available() < 0) {
1333 td_verror(td, errno, "Does not support NUMA API\n");
1334 goto err;
1335 }
1336
Jens Axboe48964732013-04-11 12:01:48 +02001337 if (o->numa_cpumask_set) {
1338 ret = numa_run_on_node_mask(o->numa_cpunodesmask);
Yufei Rend0b937e2012-10-19 23:11:52 -04001339 if (ret == -1) {
1340 td_verror(td, errno, \
1341 "numa_run_on_node_mask failed\n");
1342 goto err;
1343 }
1344 }
1345
Jens Axboe48964732013-04-11 12:01:48 +02001346 if (o->numa_memmask_set) {
Yufei Rend0b937e2012-10-19 23:11:52 -04001347
Jens Axboe48964732013-04-11 12:01:48 +02001348 switch (o->numa_mem_mode) {
Yufei Rend0b937e2012-10-19 23:11:52 -04001349 case MPOL_INTERLEAVE:
Jens Axboe48964732013-04-11 12:01:48 +02001350 numa_set_interleave_mask(o->numa_memnodesmask);
Yufei Rend0b937e2012-10-19 23:11:52 -04001351 break;
1352 case MPOL_BIND:
Jens Axboe48964732013-04-11 12:01:48 +02001353 numa_set_membind(o->numa_memnodesmask);
Yufei Rend0b937e2012-10-19 23:11:52 -04001354 break;
1355 case MPOL_LOCAL:
1356 numa_set_localalloc();
1357 break;
1358 case MPOL_PREFERRED:
Jens Axboe48964732013-04-11 12:01:48 +02001359 numa_set_preferred(o->numa_mem_prefer_node);
Yufei Rend0b937e2012-10-19 23:11:52 -04001360 break;
1361 case MPOL_DEFAULT:
1362 default:
1363 break;
1364 }
1365
1366 }
1367 }
1368#endif
1369
Jens Axboe9a3f1102012-03-28 20:50:15 +02001370 if (fio_pin_memory(td))
1371 goto err;
1372
Jens Axboe2e1df072012-02-09 11:15:02 +01001373 /*
1374 * May alter parameters that init_io_u() will use, so we need to
1375 * do this first.
1376 */
1377 if (init_iolog(td))
1378 goto err;
1379
1380 if (init_io_u(td))
1381 goto err;
1382
Jens Axboe48964732013-04-11 12:01:48 +02001383 if (o->verify_async && verify_async_init(td))
Jens Axboe2e1df072012-02-09 11:15:02 +01001384 goto err;
1385
Jens Axboe28727df2012-03-29 08:33:15 +02001386 if (o->ioprio) {
1387 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1388 if (ret == -1) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001389 td_verror(td, errno, "ioprio_set");
1390 goto err;
1391 }
1392 }
1393
Jens Axboe48964732013-04-11 12:01:48 +02001394 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
Jens Axboe2e1df072012-02-09 11:15:02 +01001395 goto err;
1396
Bruce Cran649c10c2012-02-20 07:59:06 +01001397 errno = 0;
Jens Axboe48964732013-04-11 12:01:48 +02001398 if (nice(o->nice) == -1 && errno != 0) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001399 td_verror(td, errno, "nice");
1400 goto err;
1401 }
1402
Jens Axboe48964732013-04-11 12:01:48 +02001403 if (o->ioscheduler && switch_ioscheduler(td))
Jens Axboe2e1df072012-02-09 11:15:02 +01001404 goto err;
1405
Jens Axboe48964732013-04-11 12:01:48 +02001406 if (!o->create_serialize && setup_files(td))
Jens Axboe2e1df072012-02-09 11:15:02 +01001407 goto err;
1408
1409 if (td_io_init(td))
1410 goto err;
1411
1412 if (init_random_map(td))
1413 goto err;
1414
Erwan Veluce486492013-07-17 23:04:46 +02001415 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
Jens Axboe48964732013-04-11 12:01:48 +02001416 goto err;
Jens Axboe2e1df072012-02-09 11:15:02 +01001417
Jens Axboe48964732013-04-11 12:01:48 +02001418 if (o->pre_read) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001419 if (pre_read_files(td) < 0)
1420 goto err;
1421 }
1422
Jens Axboedc5bfbb2013-04-10 22:23:40 +02001423 fio_verify_init(td);
1424
Jens Axboe2e1df072012-02-09 11:15:02 +01001425 fio_gettime(&td->epoch, NULL);
Jens Axboe44404c52013-01-24 14:20:09 -07001426 fio_getrusage(&td->ru_start);
Jens Axboe2e1df072012-02-09 11:15:02 +01001427 clear_state = 0;
1428 while (keep_running(td)) {
Jens Axboe100f49f2013-01-23 10:15:57 -07001429 uint64_t verify_bytes;
1430
Jens Axboe2e1df072012-02-09 11:15:02 +01001431 fio_gettime(&td->start, NULL);
1432 memcpy(&td->bw_sample_time, &td->start, sizeof(td->start));
1433 memcpy(&td->iops_sample_time, &td->start, sizeof(td->start));
1434 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1435
Jens Axboe48964732013-04-11 12:01:48 +02001436 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1437 o->ratemin[DDIR_TRIM]) {
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001438 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
Jens Axboe2e1df072012-02-09 11:15:02 +01001439 sizeof(td->bw_sample_time));
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001440 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1441 sizeof(td->bw_sample_time));
1442 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
Jens Axboe2e1df072012-02-09 11:15:02 +01001443 sizeof(td->bw_sample_time));
1444 }
1445
1446 if (clear_state)
1447 clear_io_state(td);
1448
1449 prune_io_piece_log(td);
1450
Juan Casse62167762013-09-17 14:06:13 -07001451 if (td->o.verify_only && (td_write(td) || td_rw(td)))
1452 verify_bytes = do_dry_run(td);
1453 else
1454 verify_bytes = do_io(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001455
1456 clear_state = 1;
1457
1458 if (td_read(td) && td->io_bytes[DDIR_READ]) {
1459 elapsed = utime_since_now(&td->start);
1460 td->ts.runtime[DDIR_READ] += elapsed;
1461 }
1462 if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
1463 elapsed = utime_since_now(&td->start);
1464 td->ts.runtime[DDIR_WRITE] += elapsed;
1465 }
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001466 if (td_trim(td) && td->io_bytes[DDIR_TRIM]) {
1467 elapsed = utime_since_now(&td->start);
1468 td->ts.runtime[DDIR_TRIM] += elapsed;
1469 }
Jens Axboe2e1df072012-02-09 11:15:02 +01001470
1471 if (td->error || td->terminate)
1472 break;
1473
Jens Axboe48964732013-04-11 12:01:48 +02001474 if (!o->do_verify ||
1475 o->verify == VERIFY_NONE ||
Jens Axboe2e1df072012-02-09 11:15:02 +01001476 (td->io_ops->flags & FIO_UNIDIR))
1477 continue;
1478
1479 clear_io_state(td);
1480
1481 fio_gettime(&td->start, NULL);
1482
Jens Axboe100f49f2013-01-23 10:15:57 -07001483 do_verify(td, verify_bytes);
Jens Axboe2e1df072012-02-09 11:15:02 +01001484
1485 td->ts.runtime[DDIR_READ] += utime_since_now(&td->start);
1486
1487 if (td->error || td->terminate)
1488 break;
1489 }
1490
1491 update_rusage_stat(td);
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001492 td->ts.runtime[DDIR_READ] = (td->ts.runtime[DDIR_READ] + 999) / 1000;
1493 td->ts.runtime[DDIR_WRITE] = (td->ts.runtime[DDIR_WRITE] + 999) / 1000;
1494 td->ts.runtime[DDIR_TRIM] = (td->ts.runtime[DDIR_TRIM] + 999) / 1000;
Jens Axboe2e1df072012-02-09 11:15:02 +01001495 td->ts.total_run_time = mtime_since_now(&td->epoch);
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001496 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1497 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1498 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
Jens Axboe2e1df072012-02-09 11:15:02 +01001499
Jens Axboe9a3f1102012-03-28 20:50:15 +02001500 fio_unpin_memory(td);
1501
Jens Axboe905e3d42014-04-02 20:01:27 -06001502 fio_writeout_logs(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001503
Jens Axboe48964732013-04-11 12:01:48 +02001504 if (o->exec_postrun)
Erwan Veluce486492013-07-17 23:04:46 +02001505 exec_string(o, o->exec_postrun, (const char *)"postrun");
Jens Axboe2e1df072012-02-09 11:15:02 +01001506
1507 if (exitall_on_terminate)
1508 fio_terminate_threads(td->groupid);
1509
1510err:
1511 if (td->error)
1512 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1513 td->verror);
1514
Jens Axboe48964732013-04-11 12:01:48 +02001515 if (o->verify_async)
Jens Axboe2e1df072012-02-09 11:15:02 +01001516 verify_async_exit(td);
1517
1518 close_and_free_files(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001519 cleanup_io_u(td);
Bruce Cran32dbca22012-12-06 20:32:40 +01001520 close_ioengine(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001521 cgroup_shutdown(td, &cgroup_mnt);
1522
Jens Axboe48964732013-04-11 12:01:48 +02001523 if (o->cpumask_set) {
1524 int ret = fio_cpuset_exit(&o->cpumask);
Jens Axboe2e1df072012-02-09 11:15:02 +01001525
1526 td_verror(td, ret, "fio_cpuset_exit");
1527 }
1528
1529 /*
1530 * do this very late, it will log file closing as well
1531 */
Jens Axboe48964732013-04-11 12:01:48 +02001532 if (o->write_iolog_file)
Jens Axboe2e1df072012-02-09 11:15:02 +01001533 write_iolog_close(td);
1534
Jens Axboec97f1ad2013-03-28 15:08:49 -06001535 fio_mutex_remove(td->rusage_sem);
1536 td->rusage_sem = NULL;
1537
Jens Axboeea66e042014-02-10 13:57:09 -07001538 fio_mutex_remove(td->mutex);
1539 td->mutex = NULL;
1540
Jens Axboe2e1df072012-02-09 11:15:02 +01001541 td_set_runstate(td, TD_EXITED);
Bruce Crane43606c2012-02-20 09:34:24 +01001542 return (void *) (uintptr_t) td->error;
Jens Axboe2e1df072012-02-09 11:15:02 +01001543}
1544
1545
1546/*
1547 * We cannot pass the td data into a forked process, so attach the td and
1548 * pass it to the thread worker.
1549 */
1550static int fork_main(int shmid, int offset)
1551{
1552 struct thread_data *td;
1553 void *data, *ret;
1554
1555#ifndef __hpux
1556 data = shmat(shmid, NULL, 0);
1557 if (data == (void *) -1) {
1558 int __err = errno;
1559
1560 perror("shmat");
1561 return __err;
1562 }
1563#else
1564 /*
1565 * HP-UX inherits shm mappings?
1566 */
1567 data = threads;
1568#endif
1569
1570 td = data + offset * sizeof(struct thread_data);
1571 ret = thread_main(td);
1572 shmdt(data);
Bruce Crane43606c2012-02-20 09:34:24 +01001573 return (int) (uintptr_t) ret;
Jens Axboe2e1df072012-02-09 11:15:02 +01001574}
1575
1576/*
1577 * Run over the job map and reap the threads that have exited, if any.
1578 */
1579static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1580 unsigned int *m_rate)
1581{
1582 struct thread_data *td;
1583 unsigned int cputhreads, realthreads, pending;
1584 int i, status, ret;
1585
1586 /*
1587 * reap exited threads (TD_EXITED -> TD_REAPED)
1588 */
1589 realthreads = pending = cputhreads = 0;
1590 for_each_td(td, i) {
1591 int flags = 0;
1592
1593 /*
1594 * ->io_ops is NULL for a thread that has closed its
1595 * io engine
1596 */
1597 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1598 cputhreads++;
1599 else
1600 realthreads++;
1601
1602 if (!td->pid) {
1603 pending++;
1604 continue;
1605 }
1606 if (td->runstate == TD_REAPED)
1607 continue;
1608 if (td->o.use_thread) {
1609 if (td->runstate == TD_EXITED) {
1610 td_set_runstate(td, TD_REAPED);
1611 goto reaped;
1612 }
1613 continue;
1614 }
1615
1616 flags = WNOHANG;
1617 if (td->runstate == TD_EXITED)
1618 flags = 0;
1619
1620 /*
1621 * check if someone quit or got killed in an unusual way
1622 */
1623 ret = waitpid(td->pid, &status, flags);
1624 if (ret < 0) {
1625 if (errno == ECHILD) {
1626 log_err("fio: pid=%d disappeared %d\n",
1627 (int) td->pid, td->runstate);
Jens Axboea5e371a2012-04-02 09:47:09 -07001628 td->sig = ECHILD;
Jens Axboe2e1df072012-02-09 11:15:02 +01001629 td_set_runstate(td, TD_REAPED);
1630 goto reaped;
1631 }
1632 perror("waitpid");
1633 } else if (ret == td->pid) {
1634 if (WIFSIGNALED(status)) {
1635 int sig = WTERMSIG(status);
1636
Jens Axboe36d80bc2012-11-30 21:46:06 +01001637 if (sig != SIGTERM && sig != SIGUSR2)
Jens Axboe2e1df072012-02-09 11:15:02 +01001638 log_err("fio: pid=%d, got signal=%d\n",
1639 (int) td->pid, sig);
Jens Axboea5e371a2012-04-02 09:47:09 -07001640 td->sig = sig;
Jens Axboe2e1df072012-02-09 11:15:02 +01001641 td_set_runstate(td, TD_REAPED);
1642 goto reaped;
1643 }
1644 if (WIFEXITED(status)) {
1645 if (WEXITSTATUS(status) && !td->error)
1646 td->error = WEXITSTATUS(status);
1647
1648 td_set_runstate(td, TD_REAPED);
1649 goto reaped;
1650 }
1651 }
1652
1653 /*
1654 * thread is not dead, continue
1655 */
1656 pending++;
1657 continue;
1658reaped:
1659 (*nr_running)--;
Jens Axboe342f4be2012-09-14 08:59:20 +02001660 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1661 (*t_rate) -= ddir_rw_sum(td->o.rate);
Jens Axboe2e1df072012-02-09 11:15:02 +01001662 if (!td->pid)
1663 pending--;
1664
1665 if (td->error)
1666 exit_value++;
1667
1668 done_secs += mtime_since_now(&td->epoch) / 1000;
Jens Axboe4a887522013-05-23 12:33:08 +02001669 profile_td_exit(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001670 }
1671
1672 if (*nr_running == cputhreads && !pending && realthreads)
1673 fio_terminate_threads(TERMINATE_ALL);
1674}
1675
Jens Axboe06464902013-04-24 20:38:54 -06001676static void do_usleep(unsigned int usecs)
1677{
1678 check_for_running_stats();
1679 usleep(usecs);
1680}
1681
Jens Axboe2e1df072012-02-09 11:15:02 +01001682/*
1683 * Main function for kicking off and reaping jobs, as needed.
1684 */
1685static void run_threads(void)
1686{
1687 struct thread_data *td;
Jens Axboe2e1df072012-02-09 11:15:02 +01001688 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
Jens Axboe0de5b262014-02-21 15:26:01 -08001689 uint64_t spent;
Jens Axboe2e1df072012-02-09 11:15:02 +01001690
Jens Axboe2e1df072012-02-09 11:15:02 +01001691 if (fio_gtod_offload && fio_start_gtod_thread())
1692 return;
Bruce Cran334185e2013-11-01 12:32:40 -06001693
Huadong Liuf2a2ce02013-01-30 13:22:24 +01001694 fio_idle_prof_init();
Jens Axboe2e1df072012-02-09 11:15:02 +01001695
1696 set_sig_handlers();
1697
Jens Axboe3a5f6bd2013-04-11 12:04:38 +02001698 nr_thread = nr_process = 0;
1699 for_each_td(td, i) {
1700 if (td->o.use_thread)
1701 nr_thread++;
1702 else
1703 nr_process++;
1704 }
1705
Jens Axboef3afa572012-09-17 13:34:16 +02001706 if (output_format == FIO_OUTPUT_NORMAL) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001707 log_info("Starting ");
1708 if (nr_thread)
1709 log_info("%d thread%s", nr_thread,
1710 nr_thread > 1 ? "s" : "");
1711 if (nr_process) {
1712 if (nr_thread)
1713 log_info(" and ");
1714 log_info("%d process%s", nr_process,
1715 nr_process > 1 ? "es" : "");
1716 }
1717 log_info("\n");
1718 fflush(stdout);
1719 }
1720
1721 todo = thread_number;
1722 nr_running = 0;
1723 nr_started = 0;
1724 m_rate = t_rate = 0;
1725
1726 for_each_td(td, i) {
1727 print_status_init(td->thread_number - 1);
1728
1729 if (!td->o.create_serialize)
1730 continue;
1731
1732 /*
1733 * do file setup here so it happens sequentially,
1734 * we don't want X number of threads getting their
1735 * client data interspersed on disk
1736 */
1737 if (setup_files(td)) {
1738 exit_value++;
1739 if (td->error)
1740 log_err("fio: pid=%d, err=%d/%s\n",
1741 (int) td->pid, td->error, td->verror);
1742 td_set_runstate(td, TD_REAPED);
1743 todo--;
1744 } else {
1745 struct fio_file *f;
1746 unsigned int j;
1747
1748 /*
1749 * for sharing to work, each job must always open
1750 * its own files. so close them, if we opened them
1751 * for creation
1752 */
1753 for_each_file(td, f, j) {
1754 if (fio_file_open(f))
1755 td_io_close_file(td, f);
1756 }
1757 }
1758 }
1759
Huadong Liuf2a2ce02013-01-30 13:22:24 +01001760 /* start idle threads before io threads start to run */
1761 fio_idle_prof_start();
1762
Jens Axboe2e1df072012-02-09 11:15:02 +01001763 set_genesis_time();
1764
1765 while (todo) {
1766 struct thread_data *map[REAL_MAX_JOBS];
1767 struct timeval this_start;
1768 int this_jobs = 0, left;
1769
1770 /*
1771 * create threads (TD_NOT_CREATED -> TD_CREATED)
1772 */
1773 for_each_td(td, i) {
1774 if (td->runstate != TD_NOT_CREATED)
1775 continue;
1776
1777 /*
1778 * never got a chance to start, killed by other
1779 * thread for some reason
1780 */
1781 if (td->terminate) {
1782 todo--;
1783 continue;
1784 }
1785
1786 if (td->o.start_delay) {
Jens Axboe0de5b262014-02-21 15:26:01 -08001787 spent = utime_since_genesis();
Jens Axboe2e1df072012-02-09 11:15:02 +01001788
Christian Ehrhardt74454ce2014-02-20 14:20:01 +01001789 if (td->o.start_delay > spent)
Jens Axboe2e1df072012-02-09 11:15:02 +01001790 continue;
1791 }
1792
1793 if (td->o.stonewall && (nr_started || nr_running)) {
1794 dprint(FD_PROCESS, "%s: stonewall wait\n",
1795 td->o.name);
1796 break;
1797 }
1798
1799 init_disk_util(td);
1800
Jens Axboec97f1ad2013-03-28 15:08:49 -06001801 td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
1802 td->update_rusage = 0;
1803
Jens Axboe2e1df072012-02-09 11:15:02 +01001804 /*
1805 * Set state to created. Thread will transition
1806 * to TD_INITIALIZED when it's done setting up.
1807 */
1808 td_set_runstate(td, TD_CREATED);
1809 map[this_jobs++] = td;
1810 nr_started++;
1811
1812 if (td->o.use_thread) {
1813 int ret;
1814
1815 dprint(FD_PROCESS, "will pthread_create\n");
1816 ret = pthread_create(&td->thread, NULL,
1817 thread_main, td);
1818 if (ret) {
1819 log_err("pthread_create: %s\n",
1820 strerror(ret));
1821 nr_started--;
1822 break;
1823 }
1824 ret = pthread_detach(td->thread);
1825 if (ret)
1826 log_err("pthread_detach: %s",
1827 strerror(ret));
1828 } else {
1829 pid_t pid;
1830 dprint(FD_PROCESS, "will fork\n");
1831 pid = fork();
1832 if (!pid) {
1833 int ret = fork_main(shm_id, i);
1834
1835 _exit(ret);
1836 } else if (i == fio_debug_jobno)
1837 *fio_debug_jobp = pid;
1838 }
1839 dprint(FD_MUTEX, "wait on startup_mutex\n");
1840 if (fio_mutex_down_timeout(startup_mutex, 10)) {
1841 log_err("fio: job startup hung? exiting.\n");
1842 fio_terminate_threads(TERMINATE_ALL);
1843 fio_abort = 1;
1844 nr_started--;
1845 break;
1846 }
1847 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1848 }
1849
1850 /*
1851 * Wait for the started threads to transition to
1852 * TD_INITIALIZED.
1853 */
1854 fio_gettime(&this_start, NULL);
1855 left = this_jobs;
1856 while (left && !fio_abort) {
1857 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
1858 break;
1859
Jens Axboe06464902013-04-24 20:38:54 -06001860 do_usleep(100000);
Jens Axboe2e1df072012-02-09 11:15:02 +01001861
1862 for (i = 0; i < this_jobs; i++) {
1863 td = map[i];
1864 if (!td)
1865 continue;
1866 if (td->runstate == TD_INITIALIZED) {
1867 map[i] = NULL;
1868 left--;
1869 } else if (td->runstate >= TD_EXITED) {
1870 map[i] = NULL;
1871 left--;
1872 todo--;
1873 nr_running++; /* work-around... */
1874 }
1875 }
1876 }
1877
1878 if (left) {
Jens Axboe4e87c372012-02-15 14:27:08 +01001879 log_err("fio: %d job%s failed to start\n", left,
1880 left > 1 ? "s" : "");
Jens Axboe2e1df072012-02-09 11:15:02 +01001881 for (i = 0; i < this_jobs; i++) {
1882 td = map[i];
1883 if (!td)
1884 continue;
1885 kill(td->pid, SIGTERM);
1886 }
1887 break;
1888 }
1889
1890 /*
1891 * start created threads (TD_INITIALIZED -> TD_RUNNING).
1892 */
1893 for_each_td(td, i) {
1894 if (td->runstate != TD_INITIALIZED)
1895 continue;
1896
1897 if (in_ramp_time(td))
1898 td_set_runstate(td, TD_RAMP);
1899 else
1900 td_set_runstate(td, TD_RUNNING);
1901 nr_running++;
1902 nr_started--;
Jens Axboe342f4be2012-09-14 08:59:20 +02001903 m_rate += ddir_rw_sum(td->o.ratemin);
1904 t_rate += ddir_rw_sum(td->o.rate);
Jens Axboe2e1df072012-02-09 11:15:02 +01001905 todo--;
1906 fio_mutex_up(td->mutex);
1907 }
1908
1909 reap_threads(&nr_running, &t_rate, &m_rate);
1910
Jens Axboe122c7722012-03-19 09:13:15 +01001911 if (todo)
Jens Axboe06464902013-04-24 20:38:54 -06001912 do_usleep(100000);
Jens Axboe2e1df072012-02-09 11:15:02 +01001913 }
1914
1915 while (nr_running) {
1916 reap_threads(&nr_running, &t_rate, &m_rate);
Jens Axboe06464902013-04-24 20:38:54 -06001917 do_usleep(10000);
Jens Axboe2e1df072012-02-09 11:15:02 +01001918 }
1919
Huadong Liuf2a2ce02013-01-30 13:22:24 +01001920 fio_idle_prof_stop();
1921
Jens Axboe2e1df072012-02-09 11:15:02 +01001922 update_io_ticks();
Jens Axboe2e1df072012-02-09 11:15:02 +01001923}
1924
Jens Axboe9ec77792012-08-02 08:27:41 +02001925void wait_for_disk_thread_exit(void)
1926{
1927 fio_mutex_down(disk_thread_mutex);
1928}
1929
Jens Axboe27357182012-09-27 11:31:50 +02001930static void free_disk_util(void)
1931{
1932 disk_util_start_exit();
1933 wait_for_disk_thread_exit();
1934 disk_util_prune_entries();
1935}
1936
Jens Axboe2e1df072012-02-09 11:15:02 +01001937static void *disk_thread_main(void *data)
1938{
Jens Axboe9ec77792012-08-02 08:27:41 +02001939 int ret = 0;
1940
Jens Axboe2e1df072012-02-09 11:15:02 +01001941 fio_mutex_up(startup_mutex);
1942
Jens Axboe9ec77792012-08-02 08:27:41 +02001943 while (threads && !ret) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001944 usleep(DISK_UTIL_MSEC * 1000);
1945 if (!threads)
1946 break;
Jens Axboe9ec77792012-08-02 08:27:41 +02001947 ret = update_io_ticks();
Jens Axboe2e1df072012-02-09 11:15:02 +01001948
1949 if (!is_backend)
1950 print_thread_status();
1951 }
1952
Jens Axboe9ec77792012-08-02 08:27:41 +02001953 fio_mutex_up(disk_thread_mutex);
Jens Axboe2e1df072012-02-09 11:15:02 +01001954 return NULL;
1955}
1956
1957static int create_disk_util_thread(void)
1958{
1959 int ret;
1960
Jens Axboe9ec77792012-08-02 08:27:41 +02001961 setup_disk_util();
1962
Jens Axboe521da522012-08-02 11:21:36 +02001963 disk_thread_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
Jens Axboe9ec77792012-08-02 08:27:41 +02001964
Jens Axboe2e1df072012-02-09 11:15:02 +01001965 ret = pthread_create(&disk_util_thread, NULL, disk_thread_main, NULL);
1966 if (ret) {
Jens Axboe9ec77792012-08-02 08:27:41 +02001967 fio_mutex_remove(disk_thread_mutex);
Jens Axboe2e1df072012-02-09 11:15:02 +01001968 log_err("Can't create disk util thread: %s\n", strerror(ret));
1969 return 1;
1970 }
1971
1972 ret = pthread_detach(disk_util_thread);
1973 if (ret) {
Jens Axboe9ec77792012-08-02 08:27:41 +02001974 fio_mutex_remove(disk_thread_mutex);
Jens Axboe2e1df072012-02-09 11:15:02 +01001975 log_err("Can't detatch disk util thread: %s\n", strerror(ret));
1976 return 1;
1977 }
1978
1979 dprint(FD_MUTEX, "wait on startup_mutex\n");
1980 fio_mutex_down(startup_mutex);
1981 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1982 return 0;
1983}
1984
Jens Axboe2e1df072012-02-09 11:15:02 +01001985int fio_backend(void)
1986{
1987 struct thread_data *td;
1988 int i;
1989
1990 if (exec_profile) {
1991 if (load_profile(exec_profile))
1992 return 1;
1993 free(exec_profile);
1994 exec_profile = NULL;
1995 }
1996 if (!thread_number)
1997 return 0;
1998
1999 if (write_bw_log) {
Jens Axboe5a812f92012-03-14 11:39:13 +01002000 setup_log(&agg_io_log[DDIR_READ], 0, IO_LOG_TYPE_BW);
2001 setup_log(&agg_io_log[DDIR_WRITE], 0, IO_LOG_TYPE_BW);
2002 setup_log(&agg_io_log[DDIR_TRIM], 0, IO_LOG_TYPE_BW);
Jens Axboe2e1df072012-02-09 11:15:02 +01002003 }
2004
Jens Axboe521da522012-08-02 11:21:36 +02002005 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
Jens Axboe2e1df072012-02-09 11:15:02 +01002006 if (startup_mutex == NULL)
2007 return 1;
Jens Axboe2e1df072012-02-09 11:15:02 +01002008
2009 set_genesis_time();
Jens Axboecef91752013-04-26 17:05:57 -06002010 stat_init();
Jens Axboe2e1df072012-02-09 11:15:02 +01002011 create_disk_util_thread();
2012
2013 cgroup_list = smalloc(sizeof(*cgroup_list));
2014 INIT_FLIST_HEAD(cgroup_list);
2015
2016 run_threads();
2017
2018 if (!fio_abort) {
2019 show_run_stats();
2020 if (write_bw_log) {
2021 __finish_log(agg_io_log[DDIR_READ], "agg-read_bw.log");
2022 __finish_log(agg_io_log[DDIR_WRITE],
2023 "agg-write_bw.log");
Shaohua Li6eaf09d2012-09-14 08:49:43 +02002024 __finish_log(agg_io_log[DDIR_TRIM],
2025 "agg-write_bw.log");
Jens Axboe2e1df072012-02-09 11:15:02 +01002026 }
2027 }
2028
2029 for_each_td(td, i)
2030 fio_options_free(td);
2031
Jens Axboea462bae2012-03-30 08:33:27 +02002032 free_disk_util();
Jens Axboe2e1df072012-02-09 11:15:02 +01002033 cgroup_kill(cgroup_list);
2034 sfree(cgroup_list);
2035 sfree(cgroup_mnt);
2036
2037 fio_mutex_remove(startup_mutex);
Jens Axboe9ec77792012-08-02 08:27:41 +02002038 fio_mutex_remove(disk_thread_mutex);
Jens Axboecef91752013-04-26 17:05:57 -06002039 stat_exit();
Jens Axboe2e1df072012-02-09 11:15:02 +01002040 return exit_value;
2041}