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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 Axboe2e1df072012-02-09 11:15:02 +010055
56static pthread_t disk_util_thread;
Jens Axboe9ec77792012-08-02 08:27:41 +020057static struct fio_mutex *disk_thread_mutex;
Jens Axboe2e1df072012-02-09 11:15:02 +010058static struct fio_mutex *startup_mutex;
59static struct fio_mutex *writeout_mutex;
60static 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 {
185 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
186 if (rate < ratemin ||
187 bytes < td->rate_bytes[ddir]) {
188 log_err("%s: min rate %u not met, got"
189 " %luKB/sec\n", td->o.name,
190 ratemin, rate);
191 return 1;
192 }
193 }
194 } else {
195 /*
196 * checks iops specified rate
197 */
198 if (iops < rate_iops) {
199 log_err("%s: min iops rate %u not met\n",
200 td->o.name, rate_iops);
201 return 1;
202 } else {
203 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
204 if (rate < rate_iops_min ||
205 iops < td->rate_blocks[ddir]) {
206 log_err("%s: min iops rate %u not met,"
207 " got %lu\n", td->o.name,
208 rate_iops_min, rate);
209 }
210 }
211 }
212 }
213
214 td->rate_bytes[ddir] = bytes;
215 td->rate_blocks[ddir] = iops;
216 memcpy(&td->lastrate[ddir], now, sizeof(*now));
217 return 0;
218}
219
220static int check_min_rate(struct thread_data *td, struct timeval *now,
Jens Axboe100f49f2013-01-23 10:15:57 -0700221 uint64_t *bytes_done)
Jens Axboe2e1df072012-02-09 11:15:02 +0100222{
223 int ret = 0;
224
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200225 if (bytes_done[DDIR_READ])
226 ret |= __check_min_rate(td, now, DDIR_READ);
227 if (bytes_done[DDIR_WRITE])
228 ret |= __check_min_rate(td, now, DDIR_WRITE);
229 if (bytes_done[DDIR_TRIM])
230 ret |= __check_min_rate(td, now, DDIR_TRIM);
Jens Axboe2e1df072012-02-09 11:15:02 +0100231
232 return ret;
233}
234
235/*
236 * When job exits, we can cancel the in-flight IO if we are using async
237 * io. Attempt to do so.
238 */
239static void cleanup_pending_aio(struct thread_data *td)
240{
Jens Axboe2e1df072012-02-09 11:15:02 +0100241 int r;
242
243 /*
244 * get immediately available events, if any
245 */
246 r = io_u_queued_complete(td, 0, NULL);
247 if (r < 0)
248 return;
249
250 /*
251 * now cancel remaining active events
252 */
253 if (td->io_ops->cancel) {
Jens Axboe2ae0b202013-05-28 14:16:55 +0200254 struct io_u *io_u;
255 int i;
Jens Axboe2e1df072012-02-09 11:15:02 +0100256
Jens Axboe2ae0b202013-05-28 14:16:55 +0200257 io_u_qiter(&td->io_u_all, io_u, i) {
258 if (io_u->flags & IO_U_F_FLIGHT) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100259 r = td->io_ops->cancel(td, io_u);
260 if (!r)
261 put_io_u(td, io_u);
262 }
263 }
264 }
265
266 if (td->cur_depth)
267 r = io_u_queued_complete(td, td->cur_depth, NULL);
268}
269
270/*
271 * Helper to handle the final sync of a file. Works just like the normal
272 * io path, just does everything sync.
273 */
274static int fio_io_sync(struct thread_data *td, struct fio_file *f)
275{
276 struct io_u *io_u = __get_io_u(td);
277 int ret;
278
279 if (!io_u)
280 return 1;
281
282 io_u->ddir = DDIR_SYNC;
283 io_u->file = f;
284
285 if (td_io_prep(td, io_u)) {
286 put_io_u(td, io_u);
287 return 1;
288 }
289
290requeue:
291 ret = td_io_queue(td, io_u);
292 if (ret < 0) {
293 td_verror(td, io_u->error, "td_io_queue");
294 put_io_u(td, io_u);
295 return 1;
296 } else if (ret == FIO_Q_QUEUED) {
297 if (io_u_queued_complete(td, 1, NULL) < 0)
298 return 1;
299 } else if (ret == FIO_Q_COMPLETED) {
300 if (io_u->error) {
301 td_verror(td, io_u->error, "td_io_queue");
302 return 1;
303 }
304
305 if (io_u_sync_complete(td, io_u, NULL) < 0)
306 return 1;
307 } else if (ret == FIO_Q_BUSY) {
308 if (td_io_commit(td))
309 return 1;
310 goto requeue;
311 }
312
313 return 0;
314}
Jens Axboea3efc912012-02-09 11:25:24 +0100315
Jens Axboe61ee0f82013-02-11 11:26:55 +0100316static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
317{
318 int ret;
319
320 if (fio_file_open(f))
321 return fio_io_sync(td, f);
322
323 if (td_io_open_file(td, f))
324 return 1;
325
326 ret = fio_io_sync(td, f);
327 td_io_close_file(td, f);
328 return ret;
329}
330
Jens Axboe2e1df072012-02-09 11:15:02 +0100331static inline void __update_tv_cache(struct thread_data *td)
332{
333 fio_gettime(&td->tv_cache, NULL);
334}
335
336static inline void update_tv_cache(struct thread_data *td)
337{
338 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
339 __update_tv_cache(td);
340}
341
342static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
343{
344 if (in_ramp_time(td))
345 return 0;
346 if (!td->o.timeout)
347 return 0;
348 if (mtime_since(&td->epoch, t) >= td->o.timeout * 1000)
349 return 1;
350
351 return 0;
352}
353
354static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
355 int *retptr)
356{
357 int ret = *retptr;
358
359 if (ret < 0 || td->error) {
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +0400360 int err = td->error;
361 enum error_type_bit eb;
Jens Axboe2e1df072012-02-09 11:15:02 +0100362
363 if (ret < 0)
364 err = -ret;
Jens Axboe2e1df072012-02-09 11:15:02 +0100365
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +0400366 eb = td_error_type(ddir, err);
367 if (!(td->o.continue_on_error & (1 << eb)))
Jens Axboe2e1df072012-02-09 11:15:02 +0100368 return 1;
369
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +0400370 if (td_non_fatal_error(td, eb, err)) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100371 /*
372 * Continue with the I/Os in case of
373 * a non fatal error.
374 */
375 update_error_count(td, err);
376 td_clear_error(td);
377 *retptr = 0;
378 return 0;
379 } else if (td->o.fill_device && err == ENOSPC) {
380 /*
381 * We expect to hit this error if
382 * fill_device option is set.
383 */
384 td_clear_error(td);
385 td->terminate = 1;
386 return 1;
387 } else {
388 /*
389 * Stop the I/O in case of a fatal
390 * error.
391 */
392 update_error_count(td, err);
393 return 1;
394 }
395 }
396
397 return 0;
398}
399
Jens Axboec97f1ad2013-03-28 15:08:49 -0600400static void check_update_rusage(struct thread_data *td)
401{
402 if (td->update_rusage) {
403 td->update_rusage = 0;
404 update_rusage_stat(td);
405 fio_mutex_up(td->rusage_sem);
406 }
407}
408
Jens Axboe2e1df072012-02-09 11:15:02 +0100409/*
410 * The main verify engine. Runs over the writes we previously submitted,
411 * reads the blocks back in, and checks the crc/md5 of the data.
412 */
Jens Axboe100f49f2013-01-23 10:15:57 -0700413static void do_verify(struct thread_data *td, uint64_t verify_bytes)
Jens Axboe2e1df072012-02-09 11:15:02 +0100414{
Jens Axboe100f49f2013-01-23 10:15:57 -0700415 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
Jens Axboe2e1df072012-02-09 11:15:02 +0100416 struct fio_file *f;
417 struct io_u *io_u;
418 int ret, min_events;
419 unsigned int i;
420
421 dprint(FD_VERIFY, "starting loop\n");
422
423 /*
424 * sync io first and invalidate cache, to make sure we really
425 * read from disk.
426 */
427 for_each_file(td, f, i) {
428 if (!fio_file_open(f))
429 continue;
430 if (fio_io_sync(td, f))
431 break;
432 if (file_invalidate_cache(td, f))
433 break;
434 }
435
Jens Axboec97f1ad2013-03-28 15:08:49 -0600436 check_update_rusage(td);
437
Jens Axboe2e1df072012-02-09 11:15:02 +0100438 if (td->error)
439 return;
440
441 td_set_runstate(td, TD_VERIFYING);
442
443 io_u = NULL;
444 while (!td->terminate) {
Jens Axboefbccf462013-01-08 21:02:14 +0100445 enum fio_ddir ddir;
Jens Axboe2e1df072012-02-09 11:15:02 +0100446 int ret2, full;
447
448 update_tv_cache(td);
Jens Axboec97f1ad2013-03-28 15:08:49 -0600449 check_update_rusage(td);
Jens Axboe2e1df072012-02-09 11:15:02 +0100450
451 if (runtime_exceeded(td, &td->tv_cache)) {
452 __update_tv_cache(td);
453 if (runtime_exceeded(td, &td->tv_cache)) {
454 td->terminate = 1;
455 break;
456 }
457 }
458
Dan Ehrenberg9e684a42012-02-20 11:05:14 +0100459 if (flow_threshold_exceeded(td))
460 continue;
461
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700462 if (!td->o.experimental_verify) {
463 io_u = __get_io_u(td);
464 if (!io_u)
465 break;
Jens Axboe2e1df072012-02-09 11:15:02 +0100466
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700467 if (get_next_verify(td, io_u)) {
468 put_io_u(td, io_u);
469 break;
470 }
Jens Axboe2e1df072012-02-09 11:15:02 +0100471
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700472 if (td_io_prep(td, io_u)) {
473 put_io_u(td, io_u);
474 break;
475 }
476 } else {
Jens Axboe100f49f2013-01-23 10:15:57 -0700477 if (ddir_rw_sum(bytes_done) + td->o.rw_min_bs > verify_bytes)
478 break;
479
Jens Axboebcd5abf2013-01-23 09:27:25 -0700480 while ((io_u = get_io_u(td)) != NULL) {
481 /*
482 * We are only interested in the places where
483 * we wrote or trimmed IOs. Turn those into
484 * reads for verification purposes.
485 */
486 if (io_u->ddir == DDIR_READ) {
487 /*
488 * Pretend we issued it for rwmix
489 * accounting
490 */
491 td->io_issues[DDIR_READ]++;
492 put_io_u(td, io_u);
493 continue;
494 } else if (io_u->ddir == DDIR_TRIM) {
495 io_u->ddir = DDIR_READ;
496 io_u->flags |= IO_U_F_TRIMMED;
497 break;
498 } else if (io_u->ddir == DDIR_WRITE) {
499 io_u->ddir = DDIR_READ;
500 break;
501 } else {
502 put_io_u(td, io_u);
503 continue;
504 }
505 }
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700506
Jens Axboebcd5abf2013-01-23 09:27:25 -0700507 if (!io_u)
Jens Axboe44cbc6d2013-01-21 09:47:03 -0700508 break;
Jens Axboe2e1df072012-02-09 11:15:02 +0100509 }
510
511 if (td->o.verify_async)
512 io_u->end_io = verify_io_u_async;
513 else
514 io_u->end_io = verify_io_u;
515
Jens Axboefbccf462013-01-08 21:02:14 +0100516 ddir = io_u->ddir;
517
Jens Axboe2e1df072012-02-09 11:15:02 +0100518 ret = td_io_queue(td, io_u);
519 switch (ret) {
520 case FIO_Q_COMPLETED:
521 if (io_u->error) {
522 ret = -io_u->error;
523 clear_io_u(td, io_u);
524 } else if (io_u->resid) {
525 int bytes = io_u->xfer_buflen - io_u->resid;
526
527 /*
528 * zero read, fail
529 */
530 if (!bytes) {
531 td_verror(td, EIO, "full resid");
532 put_io_u(td, io_u);
533 break;
534 }
535
536 io_u->xfer_buflen = io_u->resid;
537 io_u->xfer_buf += bytes;
538 io_u->offset += bytes;
539
540 if (ddir_rw(io_u->ddir))
541 td->ts.short_io_u[io_u->ddir]++;
542
543 f = io_u->file;
544 if (io_u->offset == f->real_file_size)
545 goto sync_done;
546
547 requeue_io_u(td, &io_u);
548 } else {
549sync_done:
Jens Axboe100f49f2013-01-23 10:15:57 -0700550 ret = io_u_sync_complete(td, io_u, bytes_done);
Jens Axboe2e1df072012-02-09 11:15:02 +0100551 if (ret < 0)
552 break;
553 }
554 continue;
555 case FIO_Q_QUEUED:
556 break;
557 case FIO_Q_BUSY:
558 requeue_io_u(td, &io_u);
559 ret2 = td_io_commit(td);
560 if (ret2 < 0)
561 ret = ret2;
562 break;
563 default:
564 assert(ret < 0);
565 td_verror(td, -ret, "td_io_queue");
566 break;
567 }
568
Jens Axboefbccf462013-01-08 21:02:14 +0100569 if (break_on_this_error(td, ddir, &ret))
Jens Axboe2e1df072012-02-09 11:15:02 +0100570 break;
571
572 /*
573 * if we can queue more, do so. but check if there are
574 * completed io_u's first. Note that we can get BUSY even
575 * without IO queued, if the system is resource starved.
576 */
577 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
578 if (full || !td->o.iodepth_batch_complete) {
579 min_events = min(td->o.iodepth_batch_complete,
580 td->cur_depth);
Jens Axboe8a74b562012-03-16 13:55:50 +0100581 /*
582 * if the queue is full, we MUST reap at least 1 event
583 */
584 if (full && !min_events)
Jens Axboe2e1df072012-02-09 11:15:02 +0100585 min_events = 1;
586
587 do {
588 /*
589 * Reap required number of io units, if any,
590 * and do the verification on them through
591 * the callback handler
592 */
Jens Axboe100f49f2013-01-23 10:15:57 -0700593 if (io_u_queued_complete(td, min_events, bytes_done) < 0) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100594 ret = -1;
595 break;
596 }
597 } while (full && (td->cur_depth > td->o.iodepth_low));
598 }
599 if (ret < 0)
600 break;
601 }
602
Jens Axboec97f1ad2013-03-28 15:08:49 -0600603 check_update_rusage(td);
604
Jens Axboe2e1df072012-02-09 11:15:02 +0100605 if (!td->error) {
606 min_events = td->cur_depth;
607
608 if (min_events)
609 ret = io_u_queued_complete(td, min_events, NULL);
610 } else
611 cleanup_pending_aio(td);
612
613 td_set_runstate(td, TD_RUNNING);
614
615 dprint(FD_VERIFY, "exiting loop\n");
616}
617
Jens Axboef7078f72012-03-07 09:24:05 +0100618static int io_bytes_exceeded(struct thread_data *td)
619{
620 unsigned long long bytes;
621
622 if (td_rw(td))
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200623 bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE];
Jens Axboef7078f72012-03-07 09:24:05 +0100624 else if (td_write(td))
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200625 bytes = td->this_io_bytes[DDIR_WRITE];
626 else if (td_read(td))
627 bytes = td->this_io_bytes[DDIR_READ];
Jens Axboef7078f72012-03-07 09:24:05 +0100628 else
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200629 bytes = td->this_io_bytes[DDIR_TRIM];
Jens Axboef7078f72012-03-07 09:24:05 +0100630
631 return bytes >= td->o.size;
632}
633
Jens Axboe2e1df072012-02-09 11:15:02 +0100634/*
635 * Main IO worker function. It retrieves io_u's to process and queues
636 * and reaps them, checking for rate and errors along the way.
Jens Axboe100f49f2013-01-23 10:15:57 -0700637 *
638 * Returns number of bytes written and trimmed.
Jens Axboe2e1df072012-02-09 11:15:02 +0100639 */
Jens Axboe100f49f2013-01-23 10:15:57 -0700640static uint64_t do_io(struct thread_data *td)
Jens Axboe2e1df072012-02-09 11:15:02 +0100641{
Jens Axboe100f49f2013-01-23 10:15:57 -0700642 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
Jens Axboe2e1df072012-02-09 11:15:02 +0100643 unsigned int i;
644 int ret = 0;
Juan Casse20876c52013-09-16 09:22:10 -0700645 uint64_t bytes_issued = 0;
Jens Axboe2e1df072012-02-09 11:15:02 +0100646
647 if (in_ramp_time(td))
648 td_set_runstate(td, TD_RAMP);
649 else
650 td_set_runstate(td, TD_RUNNING);
651
Jens Axboef7078f72012-03-07 09:24:05 +0100652 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
Daniel Ehrenbergc04e4662012-03-16 18:54:15 +0100653 (!flist_empty(&td->trim_list)) || !io_bytes_exceeded(td) ||
654 td->o.time_based) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100655 struct timeval comp_time;
Jens Axboe2e1df072012-02-09 11:15:02 +0100656 int min_evts = 0;
657 struct io_u *io_u;
658 int ret2, full;
659 enum fio_ddir ddir;
660
Jens Axboec97f1ad2013-03-28 15:08:49 -0600661 check_update_rusage(td);
662
Yufei Ren7d7803f2012-10-22 21:29:38 -0400663 if (td->terminate || td->done)
Jens Axboe2e1df072012-02-09 11:15:02 +0100664 break;
665
666 update_tv_cache(td);
667
668 if (runtime_exceeded(td, &td->tv_cache)) {
669 __update_tv_cache(td);
670 if (runtime_exceeded(td, &td->tv_cache)) {
671 td->terminate = 1;
672 break;
673 }
674 }
675
Dan Ehrenberg9e684a42012-02-20 11:05:14 +0100676 if (flow_threshold_exceeded(td))
677 continue;
678
Juan Casse20876c52013-09-16 09:22:10 -0700679 if (bytes_issued >= (uint64_t) td->o.size)
680 break;
681
Jens Axboe2e1df072012-02-09 11:15:02 +0100682 io_u = get_io_u(td);
683 if (!io_u)
684 break;
685
686 ddir = io_u->ddir;
687
688 /*
Jens Axboe82af2a72012-03-13 13:45:58 +0100689 * Add verification end_io handler if:
690 * - Asked to verify (!td_rw(td))
691 * - Or the io_u is from our verify list (mixed write/ver)
Jens Axboe2e1df072012-02-09 11:15:02 +0100692 */
693 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
Jens Axboe82af2a72012-03-13 13:45:58 +0100694 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100695 if (td->o.verify_async)
696 io_u->end_io = verify_io_u_async;
697 else
698 io_u->end_io = verify_io_u;
699 td_set_runstate(td, TD_VERIFYING);
700 } else if (in_ramp_time(td))
701 td_set_runstate(td, TD_RAMP);
702 else
703 td_set_runstate(td, TD_RUNNING);
704
705 ret = td_io_queue(td, io_u);
706 switch (ret) {
707 case FIO_Q_COMPLETED:
708 if (io_u->error) {
709 ret = -io_u->error;
710 clear_io_u(td, io_u);
711 } else if (io_u->resid) {
712 int bytes = io_u->xfer_buflen - io_u->resid;
713 struct fio_file *f = io_u->file;
714
Juan Casse20876c52013-09-16 09:22:10 -0700715 bytes_issued += bytes;
Jens Axboe2e1df072012-02-09 11:15:02 +0100716 /*
717 * zero read, fail
718 */
719 if (!bytes) {
720 td_verror(td, EIO, "full resid");
721 put_io_u(td, io_u);
722 break;
723 }
724
725 io_u->xfer_buflen = io_u->resid;
726 io_u->xfer_buf += bytes;
727 io_u->offset += bytes;
728
729 if (ddir_rw(io_u->ddir))
730 td->ts.short_io_u[io_u->ddir]++;
731
732 if (io_u->offset == f->real_file_size)
733 goto sync_done;
734
735 requeue_io_u(td, &io_u);
736 } else {
737sync_done:
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200738 if (__should_check_rate(td, DDIR_READ) ||
739 __should_check_rate(td, DDIR_WRITE) ||
740 __should_check_rate(td, DDIR_TRIM))
Jens Axboe2e1df072012-02-09 11:15:02 +0100741 fio_gettime(&comp_time, NULL);
742
743 ret = io_u_sync_complete(td, io_u, bytes_done);
744 if (ret < 0)
745 break;
Juan Casse20876c52013-09-16 09:22:10 -0700746 bytes_issued += io_u->xfer_buflen;
Jens Axboe2e1df072012-02-09 11:15:02 +0100747 }
748 break;
749 case FIO_Q_QUEUED:
750 /*
751 * if the engine doesn't have a commit hook,
752 * the io_u is really queued. if it does have such
753 * a hook, it has to call io_u_queued() itself.
754 */
755 if (td->io_ops->commit == NULL)
756 io_u_queued(td, io_u);
Juan Casse20876c52013-09-16 09:22:10 -0700757 bytes_issued += io_u->xfer_buflen;
Jens Axboe2e1df072012-02-09 11:15:02 +0100758 break;
759 case FIO_Q_BUSY:
760 requeue_io_u(td, &io_u);
761 ret2 = td_io_commit(td);
762 if (ret2 < 0)
763 ret = ret2;
764 break;
765 default:
766 assert(ret < 0);
767 put_io_u(td, io_u);
768 break;
769 }
770
771 if (break_on_this_error(td, ddir, &ret))
772 break;
773
774 /*
775 * See if we need to complete some commands. Note that we
776 * can get BUSY even without IO queued, if the system is
777 * resource starved.
778 */
779 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
780 if (full || !td->o.iodepth_batch_complete) {
781 min_evts = min(td->o.iodepth_batch_complete,
782 td->cur_depth);
Jens Axboe8a74b562012-03-16 13:55:50 +0100783 /*
784 * if the queue is full, we MUST reap at least 1 event
785 */
786 if (full && !min_evts)
Jens Axboe2e1df072012-02-09 11:15:02 +0100787 min_evts = 1;
788
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200789 if (__should_check_rate(td, DDIR_READ) ||
790 __should_check_rate(td, DDIR_WRITE) ||
791 __should_check_rate(td, DDIR_TRIM))
Jens Axboe2e1df072012-02-09 11:15:02 +0100792 fio_gettime(&comp_time, NULL);
793
794 do {
795 ret = io_u_queued_complete(td, min_evts, bytes_done);
796 if (ret < 0)
797 break;
798
799 } while (full && (td->cur_depth > td->o.iodepth_low));
800 }
801
802 if (ret < 0)
803 break;
Jens Axboed5abee02012-10-22 20:36:26 +0200804 if (!ddir_rw_sum(bytes_done) && !(td->io_ops->flags & FIO_NOIO))
Jens Axboe2e1df072012-02-09 11:15:02 +0100805 continue;
806
807 if (!in_ramp_time(td) && should_check_rate(td, bytes_done)) {
808 if (check_min_rate(td, &comp_time, bytes_done)) {
809 if (exitall_on_terminate)
810 fio_terminate_threads(td->groupid);
811 td_verror(td, EIO, "check_min_rate");
812 break;
813 }
814 }
815
816 if (td->o.thinktime) {
817 unsigned long long b;
818
Jens Axboe342f4be2012-09-14 08:59:20 +0200819 b = ddir_rw_sum(td->io_blocks);
Jens Axboe2e1df072012-02-09 11:15:02 +0100820 if (!(b % td->o.thinktime_blocks)) {
821 int left;
822
Jens Axboe002e7182013-05-17 12:39:53 +0200823 io_u_quiesce(td);
824
Jens Axboe2e1df072012-02-09 11:15:02 +0100825 if (td->o.thinktime_spin)
826 usec_spin(td->o.thinktime_spin);
827
828 left = td->o.thinktime - td->o.thinktime_spin;
829 if (left)
830 usec_sleep(td, left);
831 }
832 }
833 }
834
Jens Axboec97f1ad2013-03-28 15:08:49 -0600835 check_update_rusage(td);
836
Jens Axboe2e1df072012-02-09 11:15:02 +0100837 if (td->trim_entries)
Jens Axboe4e0a8fa2013-04-15 11:40:57 +0200838 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
Jens Axboe2e1df072012-02-09 11:15:02 +0100839
840 if (td->o.fill_device && td->error == ENOSPC) {
841 td->error = 0;
842 td->terminate = 1;
843 }
844 if (!td->error) {
845 struct fio_file *f;
846
847 i = td->cur_depth;
848 if (i) {
Jens Axboe5bd5f712013-02-03 14:20:44 +0100849 ret = io_u_queued_complete(td, i, bytes_done);
Jens Axboe2e1df072012-02-09 11:15:02 +0100850 if (td->o.fill_device && td->error == ENOSPC)
851 td->error = 0;
852 }
853
854 if (should_fsync(td) && td->o.end_fsync) {
855 td_set_runstate(td, TD_FSYNCING);
856
857 for_each_file(td, f, i) {
Jens Axboe61ee0f82013-02-11 11:26:55 +0100858 if (!fio_file_fsync(td, f))
Jens Axboe2e1df072012-02-09 11:15:02 +0100859 continue;
Jens Axboe61ee0f82013-02-11 11:26:55 +0100860
861 log_err("fio: end_fsync failed for file %s\n",
862 f->file_name);
Jens Axboe2e1df072012-02-09 11:15:02 +0100863 }
864 }
865 } else
866 cleanup_pending_aio(td);
867
868 /*
869 * stop job if we failed doing any IO
870 */
Jens Axboe342f4be2012-09-14 08:59:20 +0200871 if (!ddir_rw_sum(td->this_io_bytes))
Jens Axboe2e1df072012-02-09 11:15:02 +0100872 td->done = 1;
Jens Axboe100f49f2013-01-23 10:15:57 -0700873
874 return bytes_done[DDIR_WRITE] + bytes_done[DDIR_TRIM];
Jens Axboe2e1df072012-02-09 11:15:02 +0100875}
876
877static void cleanup_io_u(struct thread_data *td)
878{
Jens Axboe2e1df072012-02-09 11:15:02 +0100879 struct io_u *io_u;
880
Jens Axboe2ae0b202013-05-28 14:16:55 +0200881 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
Jens Axboec73ed242012-12-06 20:30:38 +0100882
883 if (td->io_ops->io_u_free)
884 td->io_ops->io_u_free(td, io_u);
885
Jens Axboe2e1df072012-02-09 11:15:02 +0100886 fio_memfree(io_u, sizeof(*io_u));
887 }
888
889 free_io_mem(td);
Jens Axboe2ae0b202013-05-28 14:16:55 +0200890
891 io_u_rexit(&td->io_u_requeues);
892 io_u_qexit(&td->io_u_freelist);
893 io_u_qexit(&td->io_u_all);
Jens Axboe2e1df072012-02-09 11:15:02 +0100894}
895
896static int init_io_u(struct thread_data *td)
897{
898 struct io_u *io_u;
Jens Axboe9c426842012-03-02 21:02:12 +0100899 unsigned int max_bs, min_write;
Jens Axboe2e1df072012-02-09 11:15:02 +0100900 int cl_align, i, max_units;
Jens Axboe2ae0b202013-05-28 14:16:55 +0200901 int data_xfer = 1, err;
Jens Axboe2e1df072012-02-09 11:15:02 +0100902 char *p;
903
904 max_units = td->o.iodepth;
Jens Axboe74f4b022013-03-22 22:56:55 -0600905 max_bs = td_max_bs(td);
Jens Axboe9c426842012-03-02 21:02:12 +0100906 min_write = td->o.min_bs[DDIR_WRITE];
Jens Axboe2e1df072012-02-09 11:15:02 +0100907 td->orig_buffer_size = (unsigned long long) max_bs
908 * (unsigned long long) max_units;
909
Dmitry Monakhov88045e02012-09-25 12:12:36 +0200910 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
Jens Axboe59d8d0f2012-09-24 14:25:33 +0200911 data_xfer = 0;
912
Jens Axboe2ae0b202013-05-28 14:16:55 +0200913 err = 0;
914 err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
915 err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
916 err += io_u_qinit(&td->io_u_all, td->o.iodepth);
917
918 if (err) {
919 log_err("fio: failed setting up IO queues\n");
920 return 1;
921 }
922
peter changfd8a09b2013-04-24 16:32:25 -0600923 /*
924 * if we may later need to do address alignment, then add any
925 * possible adjustment here so that we don't cause a buffer
926 * overflow later. this adjustment may be too much if we get
927 * lucky and the allocator gives us an aligned address.
928 */
Chris Masond01612f2013-11-15 15:52:58 -0700929 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
930 (td->io_ops->flags & FIO_RAWIO))
peter changfd8a09b2013-04-24 16:32:25 -0600931 td->orig_buffer_size += page_mask + td->o.mem_align;
932
Jens Axboe2e1df072012-02-09 11:15:02 +0100933 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
934 unsigned long bs;
935
936 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
937 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
938 }
939
940 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
941 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
942 return 1;
943 }
944
Jens Axboe59d8d0f2012-09-24 14:25:33 +0200945 if (data_xfer && allocate_io_mem(td))
Jens Axboe2e1df072012-02-09 11:15:02 +0100946 return 1;
947
Chris Masond01612f2013-11-15 15:52:58 -0700948 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
Jens Axboe2e1df072012-02-09 11:15:02 +0100949 (td->io_ops->flags & FIO_RAWIO))
950 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
951 else
952 p = td->orig_buffer;
953
954 cl_align = os_cache_line_size();
955
956 for (i = 0; i < max_units; i++) {
957 void *ptr;
958
959 if (td->terminate)
960 return 1;
961
962 ptr = fio_memalign(cl_align, sizeof(*io_u));
963 if (!ptr) {
964 log_err("fio: unable to allocate aligned memory\n");
965 break;
966 }
967
968 io_u = ptr;
969 memset(io_u, 0, sizeof(*io_u));
Jens Axboe2ae0b202013-05-28 14:16:55 +0200970 INIT_FLIST_HEAD(&io_u->verify_list);
Jens Axboe2e1df072012-02-09 11:15:02 +0100971 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
972
Jens Axboe59d8d0f2012-09-24 14:25:33 +0200973 if (data_xfer) {
Jens Axboe2e1df072012-02-09 11:15:02 +0100974 io_u->buf = p;
975 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
976
977 if (td_write(td))
Jens Axboe9c426842012-03-02 21:02:12 +0100978 io_u_fill_buffer(td, io_u, min_write, max_bs);
Jens Axboe2e1df072012-02-09 11:15:02 +0100979 if (td_write(td) && td->o.verify_pattern_bytes) {
980 /*
981 * Fill the buffer with the pattern if we are
982 * going to be doing writes.
983 */
984 fill_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
985 }
986 }
987
988 io_u->index = i;
989 io_u->flags = IO_U_F_FREE;
Jens Axboe2ae0b202013-05-28 14:16:55 +0200990 io_u_qpush(&td->io_u_freelist, io_u);
991
992 /*
993 * io_u never leaves this stack, used for iteration of all
994 * io_u buffers.
995 */
996 io_u_qpush(&td->io_u_all, io_u);
Jens Axboec73ed242012-12-06 20:30:38 +0100997
998 if (td->io_ops->io_u_init) {
999 int ret = td->io_ops->io_u_init(td, io_u);
1000
1001 if (ret) {
1002 log_err("fio: failed to init engine data: %d\n", ret);
1003 return 1;
1004 }
1005 }
1006
Jens Axboe2e1df072012-02-09 11:15:02 +01001007 p += max_bs;
1008 }
1009
1010 return 0;
1011}
1012
1013static int switch_ioscheduler(struct thread_data *td)
1014{
1015 char tmp[256], tmp2[128];
1016 FILE *f;
1017 int ret;
1018
1019 if (td->io_ops->flags & FIO_DISKLESSIO)
1020 return 0;
1021
1022 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
1023
1024 f = fopen(tmp, "r+");
1025 if (!f) {
1026 if (errno == ENOENT) {
1027 log_err("fio: os or kernel doesn't support IO scheduler"
1028 " switching\n");
1029 return 0;
1030 }
1031 td_verror(td, errno, "fopen iosched");
1032 return 1;
1033 }
1034
1035 /*
1036 * Set io scheduler.
1037 */
1038 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1039 if (ferror(f) || ret != 1) {
1040 td_verror(td, errno, "fwrite");
1041 fclose(f);
1042 return 1;
1043 }
1044
1045 rewind(f);
1046
1047 /*
1048 * Read back and check that the selected scheduler is now the default.
1049 */
1050 ret = fread(tmp, 1, sizeof(tmp), f);
1051 if (ferror(f) || ret < 0) {
1052 td_verror(td, errno, "fread");
1053 fclose(f);
1054 return 1;
1055 }
1056
1057 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1058 if (!strstr(tmp, tmp2)) {
1059 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1060 td_verror(td, EINVAL, "iosched_switch");
1061 fclose(f);
1062 return 1;
1063 }
1064
1065 fclose(f);
1066 return 0;
1067}
1068
1069static int keep_running(struct thread_data *td)
1070{
Jens Axboe2e1df072012-02-09 11:15:02 +01001071 if (td->done)
1072 return 0;
1073 if (td->o.time_based)
1074 return 1;
1075 if (td->o.loops) {
1076 td->o.loops--;
1077 return 1;
1078 }
1079
Jens Axboeee98e232013-03-19 07:49:35 -06001080 if (td->o.size != -1ULL && ddir_rw_sum(td->io_bytes) < td->o.size) {
Jens Axboe5bd5f712013-02-03 14:20:44 +01001081 uint64_t diff;
1082
1083 /*
1084 * If the difference is less than the minimum IO size, we
1085 * are done.
1086 */
1087 diff = td->o.size - ddir_rw_sum(td->io_bytes);
Jens Axboe74f4b022013-03-22 22:56:55 -06001088 if (diff < td_max_bs(td))
Jens Axboe5bd5f712013-02-03 14:20:44 +01001089 return 0;
1090
Jens Axboe2e1df072012-02-09 11:15:02 +01001091 return 1;
Jens Axboe5bd5f712013-02-03 14:20:44 +01001092 }
Jens Axboe2e1df072012-02-09 11:15:02 +01001093
1094 return 0;
1095}
1096
Erwan Veluce486492013-07-17 23:04:46 +02001097static int exec_string(struct thread_options *o, const char *string, const char *mode)
Jens Axboe2e1df072012-02-09 11:15:02 +01001098{
Erwan Veluce486492013-07-17 23:04:46 +02001099 int ret, newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
Jens Axboe2e1df072012-02-09 11:15:02 +01001100 char *str;
1101
1102 str = malloc(newlen);
Erwan Veluce486492013-07-17 23:04:46 +02001103 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
Jens Axboe2e1df072012-02-09 11:15:02 +01001104
Erwan Veluce486492013-07-17 23:04:46 +02001105 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 +01001106 ret = system(str);
1107 if (ret == -1)
1108 log_err("fio: exec of cmd <%s> failed\n", str);
1109
1110 free(str);
1111 return ret;
1112}
1113
1114/*
1115 * Entry point for the thread based jobs. The process based jobs end up
1116 * here as well, after a little setup.
1117 */
1118static void *thread_main(void *data)
1119{
1120 unsigned long long elapsed;
1121 struct thread_data *td = data;
Jens Axboe48964732013-04-11 12:01:48 +02001122 struct thread_options *o = &td->o;
Jens Axboe2e1df072012-02-09 11:15:02 +01001123 pthread_condattr_t attr;
1124 int clear_state;
Jens Axboe28727df2012-03-29 08:33:15 +02001125 int ret;
Jens Axboe2e1df072012-02-09 11:15:02 +01001126
Jens Axboe48964732013-04-11 12:01:48 +02001127 if (!o->use_thread) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001128 setsid();
1129 td->pid = getpid();
1130 } else
1131 td->pid = gettid();
1132
Bruce Cran334185e2013-11-01 12:32:40 -06001133 /*
1134 * fio_time_init() may not have been called yet if running as a server
1135 */
1136 fio_time_init();
1137
Jens Axboe48964732013-04-11 12:01:48 +02001138 fio_local_clock_init(o->use_thread);
Jens Axboe5d879392012-12-18 09:12:27 +01001139
Jens Axboe2e1df072012-02-09 11:15:02 +01001140 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1141
Jens Axboe122c7722012-03-19 09:13:15 +01001142 if (is_backend)
1143 fio_server_send_start(td);
1144
Jens Axboe2e1df072012-02-09 11:15:02 +01001145 INIT_FLIST_HEAD(&td->io_log_list);
1146 INIT_FLIST_HEAD(&td->io_hist_list);
1147 INIT_FLIST_HEAD(&td->verify_list);
1148 INIT_FLIST_HEAD(&td->trim_list);
Jens Axboe1ae83d42013-01-12 01:44:15 -07001149 INIT_FLIST_HEAD(&td->next_rand_list);
Jens Axboe2e1df072012-02-09 11:15:02 +01001150 pthread_mutex_init(&td->io_u_lock, NULL);
1151 td->io_hist_tree = RB_ROOT;
1152
1153 pthread_condattr_init(&attr);
1154 pthread_cond_init(&td->verify_cond, &attr);
1155 pthread_cond_init(&td->free_cond, &attr);
1156
1157 td_set_runstate(td, TD_INITIALIZED);
1158 dprint(FD_MUTEX, "up startup_mutex\n");
1159 fio_mutex_up(startup_mutex);
1160 dprint(FD_MUTEX, "wait on td->mutex\n");
1161 fio_mutex_down(td->mutex);
1162 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1163
1164 /*
1165 * the ->mutex mutex is now no longer used, close it to avoid
1166 * eating a file descriptor
1167 */
1168 fio_mutex_remove(td->mutex);
Jens Axboe812409e2012-03-19 10:44:29 +01001169 td->mutex = NULL;
Jens Axboe2e1df072012-02-09 11:15:02 +01001170
1171 /*
1172 * A new gid requires privilege, so we need to do this before setting
1173 * the uid.
1174 */
Jens Axboe48964732013-04-11 12:01:48 +02001175 if (o->gid != -1U && setgid(o->gid)) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001176 td_verror(td, errno, "setgid");
1177 goto err;
1178 }
Jens Axboe48964732013-04-11 12:01:48 +02001179 if (o->uid != -1U && setuid(o->uid)) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001180 td_verror(td, errno, "setuid");
1181 goto err;
1182 }
1183
1184 /*
1185 * If we have a gettimeofday() thread, make sure we exclude that
1186 * thread from this job
1187 */
Jens Axboe48964732013-04-11 12:01:48 +02001188 if (o->gtod_cpu)
1189 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
Jens Axboe2e1df072012-02-09 11:15:02 +01001190
1191 /*
1192 * Set affinity first, in case it has an impact on the memory
1193 * allocations.
1194 */
Jens Axboe48964732013-04-11 12:01:48 +02001195 if (o->cpumask_set) {
Jens Axboe28727df2012-03-29 08:33:15 +02001196 ret = fio_setaffinity(td->pid, o->cpumask);
1197 if (ret == -1) {
Jens Axboe48964732013-04-11 12:01:48 +02001198 td_verror(td, errno, "cpu_set_affinity");
1199 goto err;
1200 }
Jens Axboe2e1df072012-02-09 11:15:02 +01001201 }
1202
Jens Axboe67bf9822013-01-10 11:23:19 +01001203#ifdef CONFIG_LIBNUMA
Yufei Rend0b937e2012-10-19 23:11:52 -04001204 /* numa node setup */
Jens Axboe48964732013-04-11 12:01:48 +02001205 if (o->numa_cpumask_set || o->numa_memmask_set) {
Yufei Rend0b937e2012-10-19 23:11:52 -04001206 int ret;
1207
1208 if (numa_available() < 0) {
1209 td_verror(td, errno, "Does not support NUMA API\n");
1210 goto err;
1211 }
1212
Jens Axboe48964732013-04-11 12:01:48 +02001213 if (o->numa_cpumask_set) {
1214 ret = numa_run_on_node_mask(o->numa_cpunodesmask);
Yufei Rend0b937e2012-10-19 23:11:52 -04001215 if (ret == -1) {
1216 td_verror(td, errno, \
1217 "numa_run_on_node_mask failed\n");
1218 goto err;
1219 }
1220 }
1221
Jens Axboe48964732013-04-11 12:01:48 +02001222 if (o->numa_memmask_set) {
Yufei Rend0b937e2012-10-19 23:11:52 -04001223
Jens Axboe48964732013-04-11 12:01:48 +02001224 switch (o->numa_mem_mode) {
Yufei Rend0b937e2012-10-19 23:11:52 -04001225 case MPOL_INTERLEAVE:
Jens Axboe48964732013-04-11 12:01:48 +02001226 numa_set_interleave_mask(o->numa_memnodesmask);
Yufei Rend0b937e2012-10-19 23:11:52 -04001227 break;
1228 case MPOL_BIND:
Jens Axboe48964732013-04-11 12:01:48 +02001229 numa_set_membind(o->numa_memnodesmask);
Yufei Rend0b937e2012-10-19 23:11:52 -04001230 break;
1231 case MPOL_LOCAL:
1232 numa_set_localalloc();
1233 break;
1234 case MPOL_PREFERRED:
Jens Axboe48964732013-04-11 12:01:48 +02001235 numa_set_preferred(o->numa_mem_prefer_node);
Yufei Rend0b937e2012-10-19 23:11:52 -04001236 break;
1237 case MPOL_DEFAULT:
1238 default:
1239 break;
1240 }
1241
1242 }
1243 }
1244#endif
1245
Jens Axboe9a3f1102012-03-28 20:50:15 +02001246 if (fio_pin_memory(td))
1247 goto err;
1248
Jens Axboe2e1df072012-02-09 11:15:02 +01001249 /*
1250 * May alter parameters that init_io_u() will use, so we need to
1251 * do this first.
1252 */
1253 if (init_iolog(td))
1254 goto err;
1255
1256 if (init_io_u(td))
1257 goto err;
1258
Jens Axboe48964732013-04-11 12:01:48 +02001259 if (o->verify_async && verify_async_init(td))
Jens Axboe2e1df072012-02-09 11:15:02 +01001260 goto err;
1261
Jens Axboe28727df2012-03-29 08:33:15 +02001262 if (o->ioprio) {
1263 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1264 if (ret == -1) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001265 td_verror(td, errno, "ioprio_set");
1266 goto err;
1267 }
1268 }
1269
Jens Axboe48964732013-04-11 12:01:48 +02001270 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
Jens Axboe2e1df072012-02-09 11:15:02 +01001271 goto err;
1272
Bruce Cran649c10c2012-02-20 07:59:06 +01001273 errno = 0;
Jens Axboe48964732013-04-11 12:01:48 +02001274 if (nice(o->nice) == -1 && errno != 0) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001275 td_verror(td, errno, "nice");
1276 goto err;
1277 }
1278
Jens Axboe48964732013-04-11 12:01:48 +02001279 if (o->ioscheduler && switch_ioscheduler(td))
Jens Axboe2e1df072012-02-09 11:15:02 +01001280 goto err;
1281
Jens Axboe48964732013-04-11 12:01:48 +02001282 if (!o->create_serialize && setup_files(td))
Jens Axboe2e1df072012-02-09 11:15:02 +01001283 goto err;
1284
1285 if (td_io_init(td))
1286 goto err;
1287
1288 if (init_random_map(td))
1289 goto err;
1290
Erwan Veluce486492013-07-17 23:04:46 +02001291 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
Jens Axboe48964732013-04-11 12:01:48 +02001292 goto err;
Jens Axboe2e1df072012-02-09 11:15:02 +01001293
Jens Axboe48964732013-04-11 12:01:48 +02001294 if (o->pre_read) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001295 if (pre_read_files(td) < 0)
1296 goto err;
1297 }
1298
Jens Axboedc5bfbb2013-04-10 22:23:40 +02001299 fio_verify_init(td);
1300
Jens Axboe2e1df072012-02-09 11:15:02 +01001301 fio_gettime(&td->epoch, NULL);
Jens Axboe44404c52013-01-24 14:20:09 -07001302 fio_getrusage(&td->ru_start);
Jens Axboe2e1df072012-02-09 11:15:02 +01001303 clear_state = 0;
1304 while (keep_running(td)) {
Jens Axboe100f49f2013-01-23 10:15:57 -07001305 uint64_t verify_bytes;
1306
Jens Axboe2e1df072012-02-09 11:15:02 +01001307 fio_gettime(&td->start, NULL);
1308 memcpy(&td->bw_sample_time, &td->start, sizeof(td->start));
1309 memcpy(&td->iops_sample_time, &td->start, sizeof(td->start));
1310 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1311
Jens Axboe48964732013-04-11 12:01:48 +02001312 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1313 o->ratemin[DDIR_TRIM]) {
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001314 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
Jens Axboe2e1df072012-02-09 11:15:02 +01001315 sizeof(td->bw_sample_time));
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001316 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1317 sizeof(td->bw_sample_time));
1318 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
Jens Axboe2e1df072012-02-09 11:15:02 +01001319 sizeof(td->bw_sample_time));
1320 }
1321
1322 if (clear_state)
1323 clear_io_state(td);
1324
1325 prune_io_piece_log(td);
1326
Jens Axboe100f49f2013-01-23 10:15:57 -07001327 verify_bytes = do_io(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001328
1329 clear_state = 1;
1330
1331 if (td_read(td) && td->io_bytes[DDIR_READ]) {
1332 elapsed = utime_since_now(&td->start);
1333 td->ts.runtime[DDIR_READ] += elapsed;
1334 }
1335 if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
1336 elapsed = utime_since_now(&td->start);
1337 td->ts.runtime[DDIR_WRITE] += elapsed;
1338 }
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001339 if (td_trim(td) && td->io_bytes[DDIR_TRIM]) {
1340 elapsed = utime_since_now(&td->start);
1341 td->ts.runtime[DDIR_TRIM] += elapsed;
1342 }
Jens Axboe2e1df072012-02-09 11:15:02 +01001343
1344 if (td->error || td->terminate)
1345 break;
1346
Jens Axboe48964732013-04-11 12:01:48 +02001347 if (!o->do_verify ||
1348 o->verify == VERIFY_NONE ||
Jens Axboe2e1df072012-02-09 11:15:02 +01001349 (td->io_ops->flags & FIO_UNIDIR))
1350 continue;
1351
1352 clear_io_state(td);
1353
1354 fio_gettime(&td->start, NULL);
1355
Jens Axboe100f49f2013-01-23 10:15:57 -07001356 do_verify(td, verify_bytes);
Jens Axboe2e1df072012-02-09 11:15:02 +01001357
1358 td->ts.runtime[DDIR_READ] += utime_since_now(&td->start);
1359
1360 if (td->error || td->terminate)
1361 break;
1362 }
1363
1364 update_rusage_stat(td);
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001365 td->ts.runtime[DDIR_READ] = (td->ts.runtime[DDIR_READ] + 999) / 1000;
1366 td->ts.runtime[DDIR_WRITE] = (td->ts.runtime[DDIR_WRITE] + 999) / 1000;
1367 td->ts.runtime[DDIR_TRIM] = (td->ts.runtime[DDIR_TRIM] + 999) / 1000;
Jens Axboe2e1df072012-02-09 11:15:02 +01001368 td->ts.total_run_time = mtime_since_now(&td->epoch);
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001369 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1370 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1371 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
Jens Axboe2e1df072012-02-09 11:15:02 +01001372
Jens Axboe9a3f1102012-03-28 20:50:15 +02001373 fio_unpin_memory(td);
1374
Jens Axboe2e1df072012-02-09 11:15:02 +01001375 fio_mutex_down(writeout_mutex);
1376 if (td->bw_log) {
Jens Axboe48964732013-04-11 12:01:48 +02001377 if (o->bw_log_file) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001378 finish_log_named(td, td->bw_log,
Jens Axboe48964732013-04-11 12:01:48 +02001379 o->bw_log_file, "bw");
Jens Axboe2e1df072012-02-09 11:15:02 +01001380 } else
1381 finish_log(td, td->bw_log, "bw");
1382 }
1383 if (td->lat_log) {
Jens Axboe48964732013-04-11 12:01:48 +02001384 if (o->lat_log_file) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001385 finish_log_named(td, td->lat_log,
Jens Axboe48964732013-04-11 12:01:48 +02001386 o->lat_log_file, "lat");
Jens Axboe2e1df072012-02-09 11:15:02 +01001387 } else
1388 finish_log(td, td->lat_log, "lat");
1389 }
1390 if (td->slat_log) {
Jens Axboe48964732013-04-11 12:01:48 +02001391 if (o->lat_log_file) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001392 finish_log_named(td, td->slat_log,
Jens Axboe48964732013-04-11 12:01:48 +02001393 o->lat_log_file, "slat");
Jens Axboe2e1df072012-02-09 11:15:02 +01001394 } else
1395 finish_log(td, td->slat_log, "slat");
1396 }
1397 if (td->clat_log) {
Jens Axboe48964732013-04-11 12:01:48 +02001398 if (o->lat_log_file) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001399 finish_log_named(td, td->clat_log,
Jens Axboe48964732013-04-11 12:01:48 +02001400 o->lat_log_file, "clat");
Jens Axboe2e1df072012-02-09 11:15:02 +01001401 } else
1402 finish_log(td, td->clat_log, "clat");
1403 }
1404 if (td->iops_log) {
Jens Axboe48964732013-04-11 12:01:48 +02001405 if (o->iops_log_file) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001406 finish_log_named(td, td->iops_log,
Jens Axboe48964732013-04-11 12:01:48 +02001407 o->iops_log_file, "iops");
Jens Axboe2e1df072012-02-09 11:15:02 +01001408 } else
1409 finish_log(td, td->iops_log, "iops");
1410 }
1411
1412 fio_mutex_up(writeout_mutex);
Jens Axboe48964732013-04-11 12:01:48 +02001413 if (o->exec_postrun)
Erwan Veluce486492013-07-17 23:04:46 +02001414 exec_string(o, o->exec_postrun, (const char *)"postrun");
Jens Axboe2e1df072012-02-09 11:15:02 +01001415
1416 if (exitall_on_terminate)
1417 fio_terminate_threads(td->groupid);
1418
1419err:
1420 if (td->error)
1421 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1422 td->verror);
1423
Jens Axboe48964732013-04-11 12:01:48 +02001424 if (o->verify_async)
Jens Axboe2e1df072012-02-09 11:15:02 +01001425 verify_async_exit(td);
1426
1427 close_and_free_files(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001428 cleanup_io_u(td);
Bruce Cran32dbca22012-12-06 20:32:40 +01001429 close_ioengine(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001430 cgroup_shutdown(td, &cgroup_mnt);
1431
Jens Axboe48964732013-04-11 12:01:48 +02001432 if (o->cpumask_set) {
1433 int ret = fio_cpuset_exit(&o->cpumask);
Jens Axboe2e1df072012-02-09 11:15:02 +01001434
1435 td_verror(td, ret, "fio_cpuset_exit");
1436 }
1437
1438 /*
1439 * do this very late, it will log file closing as well
1440 */
Jens Axboe48964732013-04-11 12:01:48 +02001441 if (o->write_iolog_file)
Jens Axboe2e1df072012-02-09 11:15:02 +01001442 write_iolog_close(td);
1443
Jens Axboec97f1ad2013-03-28 15:08:49 -06001444 fio_mutex_remove(td->rusage_sem);
1445 td->rusage_sem = NULL;
1446
Jens Axboe2e1df072012-02-09 11:15:02 +01001447 td_set_runstate(td, TD_EXITED);
Bruce Crane43606c2012-02-20 09:34:24 +01001448 return (void *) (uintptr_t) td->error;
Jens Axboe2e1df072012-02-09 11:15:02 +01001449}
1450
1451
1452/*
1453 * We cannot pass the td data into a forked process, so attach the td and
1454 * pass it to the thread worker.
1455 */
1456static int fork_main(int shmid, int offset)
1457{
1458 struct thread_data *td;
1459 void *data, *ret;
1460
1461#ifndef __hpux
1462 data = shmat(shmid, NULL, 0);
1463 if (data == (void *) -1) {
1464 int __err = errno;
1465
1466 perror("shmat");
1467 return __err;
1468 }
1469#else
1470 /*
1471 * HP-UX inherits shm mappings?
1472 */
1473 data = threads;
1474#endif
1475
1476 td = data + offset * sizeof(struct thread_data);
1477 ret = thread_main(td);
1478 shmdt(data);
Bruce Crane43606c2012-02-20 09:34:24 +01001479 return (int) (uintptr_t) ret;
Jens Axboe2e1df072012-02-09 11:15:02 +01001480}
1481
1482/*
1483 * Run over the job map and reap the threads that have exited, if any.
1484 */
1485static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1486 unsigned int *m_rate)
1487{
1488 struct thread_data *td;
1489 unsigned int cputhreads, realthreads, pending;
1490 int i, status, ret;
1491
1492 /*
1493 * reap exited threads (TD_EXITED -> TD_REAPED)
1494 */
1495 realthreads = pending = cputhreads = 0;
1496 for_each_td(td, i) {
1497 int flags = 0;
1498
1499 /*
1500 * ->io_ops is NULL for a thread that has closed its
1501 * io engine
1502 */
1503 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1504 cputhreads++;
1505 else
1506 realthreads++;
1507
1508 if (!td->pid) {
1509 pending++;
1510 continue;
1511 }
1512 if (td->runstate == TD_REAPED)
1513 continue;
1514 if (td->o.use_thread) {
1515 if (td->runstate == TD_EXITED) {
1516 td_set_runstate(td, TD_REAPED);
1517 goto reaped;
1518 }
1519 continue;
1520 }
1521
1522 flags = WNOHANG;
1523 if (td->runstate == TD_EXITED)
1524 flags = 0;
1525
1526 /*
1527 * check if someone quit or got killed in an unusual way
1528 */
1529 ret = waitpid(td->pid, &status, flags);
1530 if (ret < 0) {
1531 if (errno == ECHILD) {
1532 log_err("fio: pid=%d disappeared %d\n",
1533 (int) td->pid, td->runstate);
Jens Axboea5e371a2012-04-02 09:47:09 -07001534 td->sig = ECHILD;
Jens Axboe2e1df072012-02-09 11:15:02 +01001535 td_set_runstate(td, TD_REAPED);
1536 goto reaped;
1537 }
1538 perror("waitpid");
1539 } else if (ret == td->pid) {
1540 if (WIFSIGNALED(status)) {
1541 int sig = WTERMSIG(status);
1542
Jens Axboe36d80bc2012-11-30 21:46:06 +01001543 if (sig != SIGTERM && sig != SIGUSR2)
Jens Axboe2e1df072012-02-09 11:15:02 +01001544 log_err("fio: pid=%d, got signal=%d\n",
1545 (int) td->pid, sig);
Jens Axboea5e371a2012-04-02 09:47:09 -07001546 td->sig = sig;
Jens Axboe2e1df072012-02-09 11:15:02 +01001547 td_set_runstate(td, TD_REAPED);
1548 goto reaped;
1549 }
1550 if (WIFEXITED(status)) {
1551 if (WEXITSTATUS(status) && !td->error)
1552 td->error = WEXITSTATUS(status);
1553
1554 td_set_runstate(td, TD_REAPED);
1555 goto reaped;
1556 }
1557 }
1558
1559 /*
1560 * thread is not dead, continue
1561 */
1562 pending++;
1563 continue;
1564reaped:
1565 (*nr_running)--;
Jens Axboe342f4be2012-09-14 08:59:20 +02001566 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1567 (*t_rate) -= ddir_rw_sum(td->o.rate);
Jens Axboe2e1df072012-02-09 11:15:02 +01001568 if (!td->pid)
1569 pending--;
1570
1571 if (td->error)
1572 exit_value++;
1573
1574 done_secs += mtime_since_now(&td->epoch) / 1000;
Jens Axboe4a887522013-05-23 12:33:08 +02001575 profile_td_exit(td);
Jens Axboe2e1df072012-02-09 11:15:02 +01001576 }
1577
1578 if (*nr_running == cputhreads && !pending && realthreads)
1579 fio_terminate_threads(TERMINATE_ALL);
1580}
1581
Jens Axboe06464902013-04-24 20:38:54 -06001582static void do_usleep(unsigned int usecs)
1583{
1584 check_for_running_stats();
1585 usleep(usecs);
1586}
1587
Jens Axboe2e1df072012-02-09 11:15:02 +01001588/*
1589 * Main function for kicking off and reaping jobs, as needed.
1590 */
1591static void run_threads(void)
1592{
1593 struct thread_data *td;
1594 unsigned long spent;
1595 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
1596
Jens Axboe2e1df072012-02-09 11:15:02 +01001597 if (fio_gtod_offload && fio_start_gtod_thread())
1598 return;
Bruce Cran334185e2013-11-01 12:32:40 -06001599
Huadong Liuf2a2ce02013-01-30 13:22:24 +01001600 fio_idle_prof_init();
Jens Axboe2e1df072012-02-09 11:15:02 +01001601
1602 set_sig_handlers();
1603
Jens Axboe3a5f6bd2013-04-11 12:04:38 +02001604 nr_thread = nr_process = 0;
1605 for_each_td(td, i) {
1606 if (td->o.use_thread)
1607 nr_thread++;
1608 else
1609 nr_process++;
1610 }
1611
Jens Axboef3afa572012-09-17 13:34:16 +02001612 if (output_format == FIO_OUTPUT_NORMAL) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001613 log_info("Starting ");
1614 if (nr_thread)
1615 log_info("%d thread%s", nr_thread,
1616 nr_thread > 1 ? "s" : "");
1617 if (nr_process) {
1618 if (nr_thread)
1619 log_info(" and ");
1620 log_info("%d process%s", nr_process,
1621 nr_process > 1 ? "es" : "");
1622 }
1623 log_info("\n");
1624 fflush(stdout);
1625 }
1626
1627 todo = thread_number;
1628 nr_running = 0;
1629 nr_started = 0;
1630 m_rate = t_rate = 0;
1631
1632 for_each_td(td, i) {
1633 print_status_init(td->thread_number - 1);
1634
1635 if (!td->o.create_serialize)
1636 continue;
1637
1638 /*
1639 * do file setup here so it happens sequentially,
1640 * we don't want X number of threads getting their
1641 * client data interspersed on disk
1642 */
1643 if (setup_files(td)) {
1644 exit_value++;
1645 if (td->error)
1646 log_err("fio: pid=%d, err=%d/%s\n",
1647 (int) td->pid, td->error, td->verror);
1648 td_set_runstate(td, TD_REAPED);
1649 todo--;
1650 } else {
1651 struct fio_file *f;
1652 unsigned int j;
1653
1654 /*
1655 * for sharing to work, each job must always open
1656 * its own files. so close them, if we opened them
1657 * for creation
1658 */
1659 for_each_file(td, f, j) {
1660 if (fio_file_open(f))
1661 td_io_close_file(td, f);
1662 }
1663 }
1664 }
1665
Huadong Liuf2a2ce02013-01-30 13:22:24 +01001666 /* start idle threads before io threads start to run */
1667 fio_idle_prof_start();
1668
Jens Axboe2e1df072012-02-09 11:15:02 +01001669 set_genesis_time();
1670
1671 while (todo) {
1672 struct thread_data *map[REAL_MAX_JOBS];
1673 struct timeval this_start;
1674 int this_jobs = 0, left;
1675
1676 /*
1677 * create threads (TD_NOT_CREATED -> TD_CREATED)
1678 */
1679 for_each_td(td, i) {
1680 if (td->runstate != TD_NOT_CREATED)
1681 continue;
1682
1683 /*
1684 * never got a chance to start, killed by other
1685 * thread for some reason
1686 */
1687 if (td->terminate) {
1688 todo--;
1689 continue;
1690 }
1691
1692 if (td->o.start_delay) {
1693 spent = mtime_since_genesis();
1694
1695 if (td->o.start_delay * 1000 > spent)
1696 continue;
1697 }
1698
1699 if (td->o.stonewall && (nr_started || nr_running)) {
1700 dprint(FD_PROCESS, "%s: stonewall wait\n",
1701 td->o.name);
1702 break;
1703 }
1704
1705 init_disk_util(td);
1706
Jens Axboec97f1ad2013-03-28 15:08:49 -06001707 td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
1708 td->update_rusage = 0;
1709
Jens Axboe2e1df072012-02-09 11:15:02 +01001710 /*
1711 * Set state to created. Thread will transition
1712 * to TD_INITIALIZED when it's done setting up.
1713 */
1714 td_set_runstate(td, TD_CREATED);
1715 map[this_jobs++] = td;
1716 nr_started++;
1717
1718 if (td->o.use_thread) {
1719 int ret;
1720
1721 dprint(FD_PROCESS, "will pthread_create\n");
1722 ret = pthread_create(&td->thread, NULL,
1723 thread_main, td);
1724 if (ret) {
1725 log_err("pthread_create: %s\n",
1726 strerror(ret));
1727 nr_started--;
1728 break;
1729 }
1730 ret = pthread_detach(td->thread);
1731 if (ret)
1732 log_err("pthread_detach: %s",
1733 strerror(ret));
1734 } else {
1735 pid_t pid;
1736 dprint(FD_PROCESS, "will fork\n");
1737 pid = fork();
1738 if (!pid) {
1739 int ret = fork_main(shm_id, i);
1740
1741 _exit(ret);
1742 } else if (i == fio_debug_jobno)
1743 *fio_debug_jobp = pid;
1744 }
1745 dprint(FD_MUTEX, "wait on startup_mutex\n");
1746 if (fio_mutex_down_timeout(startup_mutex, 10)) {
1747 log_err("fio: job startup hung? exiting.\n");
1748 fio_terminate_threads(TERMINATE_ALL);
1749 fio_abort = 1;
1750 nr_started--;
1751 break;
1752 }
1753 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1754 }
1755
1756 /*
1757 * Wait for the started threads to transition to
1758 * TD_INITIALIZED.
1759 */
1760 fio_gettime(&this_start, NULL);
1761 left = this_jobs;
1762 while (left && !fio_abort) {
1763 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
1764 break;
1765
Jens Axboe06464902013-04-24 20:38:54 -06001766 do_usleep(100000);
Jens Axboe2e1df072012-02-09 11:15:02 +01001767
1768 for (i = 0; i < this_jobs; i++) {
1769 td = map[i];
1770 if (!td)
1771 continue;
1772 if (td->runstate == TD_INITIALIZED) {
1773 map[i] = NULL;
1774 left--;
1775 } else if (td->runstate >= TD_EXITED) {
1776 map[i] = NULL;
1777 left--;
1778 todo--;
1779 nr_running++; /* work-around... */
1780 }
1781 }
1782 }
1783
1784 if (left) {
Jens Axboe4e87c372012-02-15 14:27:08 +01001785 log_err("fio: %d job%s failed to start\n", left,
1786 left > 1 ? "s" : "");
Jens Axboe2e1df072012-02-09 11:15:02 +01001787 for (i = 0; i < this_jobs; i++) {
1788 td = map[i];
1789 if (!td)
1790 continue;
1791 kill(td->pid, SIGTERM);
1792 }
1793 break;
1794 }
1795
1796 /*
1797 * start created threads (TD_INITIALIZED -> TD_RUNNING).
1798 */
1799 for_each_td(td, i) {
1800 if (td->runstate != TD_INITIALIZED)
1801 continue;
1802
1803 if (in_ramp_time(td))
1804 td_set_runstate(td, TD_RAMP);
1805 else
1806 td_set_runstate(td, TD_RUNNING);
1807 nr_running++;
1808 nr_started--;
Jens Axboe342f4be2012-09-14 08:59:20 +02001809 m_rate += ddir_rw_sum(td->o.ratemin);
1810 t_rate += ddir_rw_sum(td->o.rate);
Jens Axboe2e1df072012-02-09 11:15:02 +01001811 todo--;
1812 fio_mutex_up(td->mutex);
1813 }
1814
1815 reap_threads(&nr_running, &t_rate, &m_rate);
1816
Jens Axboe122c7722012-03-19 09:13:15 +01001817 if (todo)
Jens Axboe06464902013-04-24 20:38:54 -06001818 do_usleep(100000);
Jens Axboe2e1df072012-02-09 11:15:02 +01001819 }
1820
1821 while (nr_running) {
1822 reap_threads(&nr_running, &t_rate, &m_rate);
Jens Axboe06464902013-04-24 20:38:54 -06001823 do_usleep(10000);
Jens Axboe2e1df072012-02-09 11:15:02 +01001824 }
1825
Huadong Liuf2a2ce02013-01-30 13:22:24 +01001826 fio_idle_prof_stop();
1827
Jens Axboe2e1df072012-02-09 11:15:02 +01001828 update_io_ticks();
Jens Axboe2e1df072012-02-09 11:15:02 +01001829}
1830
Jens Axboe9ec77792012-08-02 08:27:41 +02001831void wait_for_disk_thread_exit(void)
1832{
1833 fio_mutex_down(disk_thread_mutex);
1834}
1835
Jens Axboe27357182012-09-27 11:31:50 +02001836static void free_disk_util(void)
1837{
1838 disk_util_start_exit();
1839 wait_for_disk_thread_exit();
1840 disk_util_prune_entries();
1841}
1842
Jens Axboe2e1df072012-02-09 11:15:02 +01001843static void *disk_thread_main(void *data)
1844{
Jens Axboe9ec77792012-08-02 08:27:41 +02001845 int ret = 0;
1846
Jens Axboe2e1df072012-02-09 11:15:02 +01001847 fio_mutex_up(startup_mutex);
1848
Jens Axboe9ec77792012-08-02 08:27:41 +02001849 while (threads && !ret) {
Jens Axboe2e1df072012-02-09 11:15:02 +01001850 usleep(DISK_UTIL_MSEC * 1000);
1851 if (!threads)
1852 break;
Jens Axboe9ec77792012-08-02 08:27:41 +02001853 ret = update_io_ticks();
Jens Axboe2e1df072012-02-09 11:15:02 +01001854
1855 if (!is_backend)
1856 print_thread_status();
1857 }
1858
Jens Axboe9ec77792012-08-02 08:27:41 +02001859 fio_mutex_up(disk_thread_mutex);
Jens Axboe2e1df072012-02-09 11:15:02 +01001860 return NULL;
1861}
1862
1863static int create_disk_util_thread(void)
1864{
1865 int ret;
1866
Jens Axboe9ec77792012-08-02 08:27:41 +02001867 setup_disk_util();
1868
Jens Axboe521da522012-08-02 11:21:36 +02001869 disk_thread_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
Jens Axboe9ec77792012-08-02 08:27:41 +02001870
Jens Axboe2e1df072012-02-09 11:15:02 +01001871 ret = pthread_create(&disk_util_thread, NULL, disk_thread_main, NULL);
1872 if (ret) {
Jens Axboe9ec77792012-08-02 08:27:41 +02001873 fio_mutex_remove(disk_thread_mutex);
Jens Axboe2e1df072012-02-09 11:15:02 +01001874 log_err("Can't create disk util thread: %s\n", strerror(ret));
1875 return 1;
1876 }
1877
1878 ret = pthread_detach(disk_util_thread);
1879 if (ret) {
Jens Axboe9ec77792012-08-02 08:27:41 +02001880 fio_mutex_remove(disk_thread_mutex);
Jens Axboe2e1df072012-02-09 11:15:02 +01001881 log_err("Can't detatch disk util thread: %s\n", strerror(ret));
1882 return 1;
1883 }
1884
1885 dprint(FD_MUTEX, "wait on startup_mutex\n");
1886 fio_mutex_down(startup_mutex);
1887 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1888 return 0;
1889}
1890
Jens Axboe2e1df072012-02-09 11:15:02 +01001891int fio_backend(void)
1892{
1893 struct thread_data *td;
1894 int i;
1895
1896 if (exec_profile) {
1897 if (load_profile(exec_profile))
1898 return 1;
1899 free(exec_profile);
1900 exec_profile = NULL;
1901 }
1902 if (!thread_number)
1903 return 0;
1904
1905 if (write_bw_log) {
Jens Axboe5a812f92012-03-14 11:39:13 +01001906 setup_log(&agg_io_log[DDIR_READ], 0, IO_LOG_TYPE_BW);
1907 setup_log(&agg_io_log[DDIR_WRITE], 0, IO_LOG_TYPE_BW);
1908 setup_log(&agg_io_log[DDIR_TRIM], 0, IO_LOG_TYPE_BW);
Jens Axboe2e1df072012-02-09 11:15:02 +01001909 }
1910
Jens Axboe521da522012-08-02 11:21:36 +02001911 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
Jens Axboe2e1df072012-02-09 11:15:02 +01001912 if (startup_mutex == NULL)
1913 return 1;
Jens Axboe521da522012-08-02 11:21:36 +02001914 writeout_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED);
Jens Axboe2e1df072012-02-09 11:15:02 +01001915 if (writeout_mutex == NULL)
1916 return 1;
1917
1918 set_genesis_time();
Jens Axboecef91752013-04-26 17:05:57 -06001919 stat_init();
Jens Axboe2e1df072012-02-09 11:15:02 +01001920 create_disk_util_thread();
1921
1922 cgroup_list = smalloc(sizeof(*cgroup_list));
1923 INIT_FLIST_HEAD(cgroup_list);
1924
1925 run_threads();
1926
1927 if (!fio_abort) {
1928 show_run_stats();
1929 if (write_bw_log) {
1930 __finish_log(agg_io_log[DDIR_READ], "agg-read_bw.log");
1931 __finish_log(agg_io_log[DDIR_WRITE],
1932 "agg-write_bw.log");
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001933 __finish_log(agg_io_log[DDIR_TRIM],
1934 "agg-write_bw.log");
Jens Axboe2e1df072012-02-09 11:15:02 +01001935 }
1936 }
1937
1938 for_each_td(td, i)
1939 fio_options_free(td);
1940
Jens Axboea462bae2012-03-30 08:33:27 +02001941 free_disk_util();
Jens Axboe2e1df072012-02-09 11:15:02 +01001942 cgroup_kill(cgroup_list);
1943 sfree(cgroup_list);
1944 sfree(cgroup_mnt);
1945
1946 fio_mutex_remove(startup_mutex);
1947 fio_mutex_remove(writeout_mutex);
Jens Axboe9ec77792012-08-02 08:27:41 +02001948 fio_mutex_remove(disk_thread_mutex);
Jens Axboecef91752013-04-26 17:05:57 -06001949 stat_exit();
Jens Axboe2e1df072012-02-09 11:15:02 +01001950 return exit_value;
1951}