2 * fio - the flexible io tester
4 * Copyright (C) 2005 Jens Axboe <axboe@suse.de>
5 * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
7 * The license below covers all files distributed with fio unless otherwise
8 * noted in the file itself.
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
41 #include "lib/memalign.h"
43 #include "lib/getrusage.h"
46 #include "workqueue.h"
47 #include "lib/mountcheck.h"
48 #include "rate-submit.h"
49 #include "helper_thread.h"
51 #include "zone-dist.h"
53 static struct fio_sem *startup_sem;
54 static struct flist_head *cgroup_list;
55 static struct cgroup_mnt *cgroup_mnt;
56 static int exit_value;
57 static volatile bool fio_abort;
58 static unsigned int nr_process = 0;
59 static unsigned int nr_thread = 0;
61 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
64 unsigned int thread_number = 0;
65 unsigned int stat_number = 0;
68 unsigned long done_secs = 0;
69 pthread_mutex_t overlap_check = PTHREAD_MUTEX_INITIALIZER;
71 #define JOB_START_TIMEOUT (5 * 1000)
73 static void sig_int(int sig)
77 fio_server_got_signal(sig);
79 log_info("\nfio: terminating on signal %d\n", sig);
84 fio_terminate_threads(TERMINATE_ALL);
88 void sig_show_status(int sig)
90 show_running_run_stats();
93 static void set_sig_handlers(void)
97 memset(&act, 0, sizeof(act));
98 act.sa_handler = sig_int;
99 act.sa_flags = SA_RESTART;
100 sigaction(SIGINT, &act, NULL);
102 memset(&act, 0, sizeof(act));
103 act.sa_handler = sig_int;
104 act.sa_flags = SA_RESTART;
105 sigaction(SIGTERM, &act, NULL);
107 /* Windows uses SIGBREAK as a quit signal from other applications */
109 memset(&act, 0, sizeof(act));
110 act.sa_handler = sig_int;
111 act.sa_flags = SA_RESTART;
112 sigaction(SIGBREAK, &act, NULL);
115 memset(&act, 0, sizeof(act));
116 act.sa_handler = sig_show_status;
117 act.sa_flags = SA_RESTART;
118 sigaction(SIGUSR1, &act, NULL);
121 memset(&act, 0, sizeof(act));
122 act.sa_handler = sig_int;
123 act.sa_flags = SA_RESTART;
124 sigaction(SIGPIPE, &act, NULL);
129 * Check if we are above the minimum rate given.
131 static bool __check_min_rate(struct thread_data *td, struct timespec *now,
134 unsigned long long bytes = 0;
135 unsigned long iops = 0;
138 unsigned int ratemin = 0;
139 unsigned int rate_iops = 0;
140 unsigned int rate_iops_min = 0;
142 assert(ddir_rw(ddir));
144 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
148 * allow a 2 second settle period in the beginning
150 if (mtime_since(&td->start, now) < 2000)
153 iops += td->this_io_blocks[ddir];
154 bytes += td->this_io_bytes[ddir];
155 ratemin += td->o.ratemin[ddir];
156 rate_iops += td->o.rate_iops[ddir];
157 rate_iops_min += td->o.rate_iops_min[ddir];
160 * if rate blocks is set, sample is running
162 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
163 spent = mtime_since(&td->lastrate[ddir], now);
164 if (spent < td->o.ratecycle)
167 if (td->o.rate[ddir] || td->o.ratemin[ddir]) {
169 * check bandwidth specified rate
171 if (bytes < td->rate_bytes[ddir]) {
172 log_err("%s: rate_min=%uB/s not met, only transferred %lluB\n",
173 td->o.name, ratemin, bytes);
177 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
181 if (rate < ratemin ||
182 bytes < td->rate_bytes[ddir]) {
183 log_err("%s: rate_min=%uB/s not met, got %luB/s\n",
184 td->o.name, ratemin, rate);
190 * checks iops specified rate
192 if (iops < rate_iops) {
193 log_err("%s: rate_iops_min=%u not met, only performed %lu IOs\n",
194 td->o.name, rate_iops, iops);
198 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
202 if (rate < rate_iops_min ||
203 iops < td->rate_blocks[ddir]) {
204 log_err("%s: rate_iops_min=%u not met, got %lu IOPS\n",
205 td->o.name, rate_iops_min, rate);
212 td->rate_bytes[ddir] = bytes;
213 td->rate_blocks[ddir] = iops;
214 memcpy(&td->lastrate[ddir], now, sizeof(*now));
218 static bool check_min_rate(struct thread_data *td, struct timespec *now)
222 if (td->bytes_done[DDIR_READ])
223 ret |= __check_min_rate(td, now, DDIR_READ);
224 if (td->bytes_done[DDIR_WRITE])
225 ret |= __check_min_rate(td, now, DDIR_WRITE);
226 if (td->bytes_done[DDIR_TRIM])
227 ret |= __check_min_rate(td, now, DDIR_TRIM);
233 * When job exits, we can cancel the in-flight IO if we are using async
234 * io. Attempt to do so.
236 static void cleanup_pending_aio(struct thread_data *td)
241 * get immediately available events, if any
243 r = io_u_queued_complete(td, 0);
248 * now cancel remaining active events
250 if (td->io_ops->cancel) {
254 io_u_qiter(&td->io_u_all, io_u, i) {
255 if (io_u->flags & IO_U_F_FLIGHT) {
256 r = td->io_ops->cancel(td, io_u);
264 r = io_u_queued_complete(td, td->cur_depth);
268 * Helper to handle the final sync of a file. Works just like the normal
269 * io path, just does everything sync.
271 static bool fio_io_sync(struct thread_data *td, struct fio_file *f)
273 struct io_u *io_u = __get_io_u(td);
274 enum fio_q_status ret;
279 io_u->ddir = DDIR_SYNC;
282 if (td_io_prep(td, io_u)) {
288 ret = td_io_queue(td, io_u);
292 if (io_u_queued_complete(td, 1) < 0)
295 case FIO_Q_COMPLETED:
297 td_verror(td, io_u->error, "td_io_queue");
301 if (io_u_sync_complete(td, io_u) < 0)
312 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
316 if (fio_file_open(f))
317 return fio_io_sync(td, f);
319 if (td_io_open_file(td, f))
322 ret = fio_io_sync(td, f);
323 td_io_close_file(td, f);
327 static inline void __update_ts_cache(struct thread_data *td)
329 fio_gettime(&td->ts_cache, NULL);
332 static inline void update_ts_cache(struct thread_data *td)
334 if ((++td->ts_cache_nr & td->ts_cache_mask) == td->ts_cache_mask)
335 __update_ts_cache(td);
338 static inline bool runtime_exceeded(struct thread_data *td, struct timespec *t)
340 if (in_ramp_time(td))
344 if (utime_since(&td->epoch, t) >= td->o.timeout)
351 * We need to update the runtime consistently in ms, but keep a running
352 * tally of the current elapsed time in microseconds for sub millisecond
355 static inline void update_runtime(struct thread_data *td,
356 unsigned long long *elapsed_us,
357 const enum fio_ddir ddir)
359 if (ddir == DDIR_WRITE && td_write(td) && td->o.verify_only)
362 td->ts.runtime[ddir] -= (elapsed_us[ddir] + 999) / 1000;
363 elapsed_us[ddir] += utime_since_now(&td->start);
364 td->ts.runtime[ddir] += (elapsed_us[ddir] + 999) / 1000;
367 static bool break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
372 if (ret < 0 || td->error) {
374 enum error_type_bit eb;
379 eb = td_error_type(ddir, err);
380 if (!(td->o.continue_on_error & (1 << eb)))
383 if (td_non_fatal_error(td, eb, err)) {
385 * Continue with the I/Os in case of
388 update_error_count(td, err);
392 } else if (td->o.fill_device && err == ENOSPC) {
394 * We expect to hit this error if
395 * fill_device option is set.
398 fio_mark_td_terminate(td);
402 * Stop the I/O in case of a fatal
405 update_error_count(td, err);
413 static void check_update_rusage(struct thread_data *td)
415 if (td->update_rusage) {
416 td->update_rusage = 0;
417 update_rusage_stat(td);
418 fio_sem_up(td->rusage_sem);
422 static int wait_for_completions(struct thread_data *td, struct timespec *time)
424 const int full = queue_full(td);
428 if (td->flags & TD_F_REGROW_LOGS)
429 return io_u_quiesce(td);
432 * if the queue is full, we MUST reap at least 1 event
434 min_evts = min(td->o.iodepth_batch_complete_min, td->cur_depth);
435 if ((full && !min_evts) || !td->o.iodepth_batch_complete_min)
438 if (time && __should_check_rate(td))
439 fio_gettime(time, NULL);
442 ret = io_u_queued_complete(td, min_evts);
445 } while (full && (td->cur_depth > td->o.iodepth_low));
450 int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
451 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
452 struct timespec *comp_time)
455 case FIO_Q_COMPLETED:
458 clear_io_u(td, io_u);
459 } else if (io_u->resid) {
460 long long bytes = io_u->xfer_buflen - io_u->resid;
461 struct fio_file *f = io_u->file;
464 *bytes_issued += bytes;
474 unlog_io_piece(td, io_u);
475 td_verror(td, EIO, "full resid");
480 io_u->xfer_buflen = io_u->resid;
481 io_u->xfer_buf += bytes;
482 io_u->offset += bytes;
484 if (ddir_rw(io_u->ddir))
485 td->ts.short_io_u[io_u->ddir]++;
487 if (io_u->offset == f->real_file_size)
490 requeue_io_u(td, &io_u);
493 if (comp_time && __should_check_rate(td))
494 fio_gettime(comp_time, NULL);
496 *ret = io_u_sync_complete(td, io_u);
501 if (td->flags & TD_F_REGROW_LOGS)
505 * when doing I/O (not when verifying),
506 * check for any errors that are to be ignored
514 * if the engine doesn't have a commit hook,
515 * the io_u is really queued. if it does have such
516 * a hook, it has to call io_u_queued() itself.
518 if (td->io_ops->commit == NULL)
519 io_u_queued(td, io_u);
521 *bytes_issued += io_u->xfer_buflen;
525 unlog_io_piece(td, io_u);
526 requeue_io_u(td, &io_u);
531 td_verror(td, -(*ret), "td_io_queue");
535 if (break_on_this_error(td, ddir, ret))
541 static inline bool io_in_polling(struct thread_data *td)
543 return !td->o.iodepth_batch_complete_min &&
544 !td->o.iodepth_batch_complete_max;
547 * Unlinks files from thread data fio_file structure
549 static int unlink_all_files(struct thread_data *td)
555 for_each_file(td, f, i) {
556 if (f->filetype != FIO_TYPE_FILE)
558 ret = td_io_unlink_file(td, f);
564 td_verror(td, ret, "unlink_all_files");
570 * Check if io_u will overlap an in-flight IO in the queue
572 bool in_flight_overlap(struct io_u_queue *q, struct io_u *io_u)
575 struct io_u *check_io_u;
576 unsigned long long x1, x2, y1, y2;
580 x2 = io_u->offset + io_u->buflen;
582 io_u_qiter(q, check_io_u, i) {
583 if (check_io_u->flags & IO_U_F_FLIGHT) {
584 y1 = check_io_u->offset;
585 y2 = check_io_u->offset + check_io_u->buflen;
587 if (x1 < y2 && y1 < x2) {
589 dprint(FD_IO, "in-flight overlap: %llu/%llu, %llu/%llu\n",
591 y1, check_io_u->buflen);
600 static enum fio_q_status io_u_submit(struct thread_data *td, struct io_u *io_u)
603 * Check for overlap if the user asked us to, and we have
604 * at least one IO in flight besides this one.
606 if (td->o.serialize_overlap && td->cur_depth > 1 &&
607 in_flight_overlap(&td->io_u_all, io_u))
610 return td_io_queue(td, io_u);
614 * The main verify engine. Runs over the writes we previously submitted,
615 * reads the blocks back in, and checks the crc/md5 of the data.
617 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
624 dprint(FD_VERIFY, "starting loop\n");
627 * sync io first and invalidate cache, to make sure we really
630 for_each_file(td, f, i) {
631 if (!fio_file_open(f))
633 if (fio_io_sync(td, f))
635 if (file_invalidate_cache(td, f))
639 check_update_rusage(td);
645 * verify_state needs to be reset before verification
646 * proceeds so that expected random seeds match actual
647 * random seeds in headers. The main loop will reset
648 * all random number generators if randrepeat is set.
650 if (!td->o.rand_repeatable)
651 td_fill_verify_state_seed(td);
653 td_set_runstate(td, TD_VERIFYING);
656 while (!td->terminate) {
661 check_update_rusage(td);
663 if (runtime_exceeded(td, &td->ts_cache)) {
664 __update_ts_cache(td);
665 if (runtime_exceeded(td, &td->ts_cache)) {
666 fio_mark_td_terminate(td);
671 if (flow_threshold_exceeded(td))
674 if (!td->o.experimental_verify) {
675 io_u = __get_io_u(td);
679 if (get_next_verify(td, io_u)) {
684 if (td_io_prep(td, io_u)) {
689 if (ddir_rw_sum(td->bytes_done) + td->o.rw_min_bs > verify_bytes)
692 while ((io_u = get_io_u(td)) != NULL) {
693 if (IS_ERR_OR_NULL(io_u)) {
700 * We are only interested in the places where
701 * we wrote or trimmed IOs. Turn those into
702 * reads for verification purposes.
704 if (io_u->ddir == DDIR_READ) {
706 * Pretend we issued it for rwmix
709 td->io_issues[DDIR_READ]++;
712 } else if (io_u->ddir == DDIR_TRIM) {
713 io_u->ddir = DDIR_READ;
714 io_u_set(td, io_u, IO_U_F_TRIMMED);
716 } else if (io_u->ddir == DDIR_WRITE) {
717 io_u->ddir = DDIR_READ;
718 populate_verify_io_u(td, io_u);
730 if (verify_state_should_stop(td, io_u)) {
735 if (td->o.verify_async)
736 io_u->end_io = verify_io_u_async;
738 io_u->end_io = verify_io_u;
741 if (!td->o.disable_slat)
742 fio_gettime(&io_u->start_time, NULL);
744 ret = io_u_submit(td, io_u);
746 if (io_queue_event(td, io_u, &ret, ddir, NULL, 1, NULL))
750 * if we can queue more, do so. but check if there are
751 * completed io_u's first. Note that we can get BUSY even
752 * without IO queued, if the system is resource starved.
755 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
756 if (full || io_in_polling(td))
757 ret = wait_for_completions(td, NULL);
763 check_update_rusage(td);
766 min_events = td->cur_depth;
769 ret = io_u_queued_complete(td, min_events);
771 cleanup_pending_aio(td);
773 td_set_runstate(td, TD_RUNNING);
775 dprint(FD_VERIFY, "exiting loop\n");
778 static bool exceeds_number_ios(struct thread_data *td)
780 unsigned long long number_ios;
782 if (!td->o.number_ios)
785 number_ios = ddir_rw_sum(td->io_blocks);
786 number_ios += td->io_u_queued + td->io_u_in_flight;
788 return number_ios >= (td->o.number_ios * td->loops);
791 static bool io_bytes_exceeded(struct thread_data *td, uint64_t *this_bytes)
793 unsigned long long bytes, limit;
796 bytes = this_bytes[DDIR_READ] + this_bytes[DDIR_WRITE];
797 else if (td_write(td))
798 bytes = this_bytes[DDIR_WRITE];
799 else if (td_read(td))
800 bytes = this_bytes[DDIR_READ];
802 bytes = this_bytes[DDIR_TRIM];
805 limit = td->o.io_size;
810 return bytes >= limit || exceeds_number_ios(td);
813 static bool io_issue_bytes_exceeded(struct thread_data *td)
815 return io_bytes_exceeded(td, td->io_issue_bytes);
818 static bool io_complete_bytes_exceeded(struct thread_data *td)
820 return io_bytes_exceeded(td, td->this_io_bytes);
824 * used to calculate the next io time for rate control
827 static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
829 uint64_t bps = td->rate_bps[ddir];
831 assert(!(td->flags & TD_F_CHILD));
833 if (td->o.rate_process == RATE_PROCESS_POISSON) {
836 iops = bps / td->o.bs[ddir];
837 val = (int64_t) (1000000 / iops) *
838 -logf(__rand_0_1(&td->poisson_state[ddir]));
840 dprint(FD_RATE, "poisson rate iops=%llu, ddir=%d\n",
841 (unsigned long long) 1000000 / val,
844 td->last_usec[ddir] += val;
845 return td->last_usec[ddir];
847 uint64_t bytes = td->rate_io_issue_bytes[ddir];
848 uint64_t secs = bytes / bps;
849 uint64_t remainder = bytes % bps;
851 return remainder * 1000000 / bps + secs * 1000000;
857 static void handle_thinktime(struct thread_data *td, enum fio_ddir ddir)
859 unsigned long long b;
863 b = ddir_rw_sum(td->io_blocks);
864 if (b % td->o.thinktime_blocks)
870 if (td->o.thinktime_spin)
871 total = usec_spin(td->o.thinktime_spin);
873 left = td->o.thinktime - total;
875 total += usec_sleep(td, left);
878 * If we're ignoring thinktime for the rate, add the number of bytes
879 * we would have done while sleeping, minus one block to ensure we
880 * start issuing immediately after the sleep.
882 if (total && td->rate_bps[ddir] && td->o.rate_ign_think) {
883 uint64_t missed = (td->rate_bps[ddir] * total) / 1000000ULL;
884 uint64_t bs = td->o.min_bs[ddir];
885 uint64_t usperop = bs * 1000000ULL / td->rate_bps[ddir];
888 if (usperop <= total)
891 over = (usperop - total) / usperop * -bs;
893 td->rate_io_issue_bytes[ddir] += (missed - over);
894 /* adjust for rate_process=poisson */
895 td->last_usec[ddir] += total;
900 * Main IO worker function. It retrieves io_u's to process and queues
901 * and reaps them, checking for rate and errors along the way.
903 * Returns number of bytes written and trimmed.
905 static void do_io(struct thread_data *td, uint64_t *bytes_done)
909 uint64_t total_bytes, bytes_issued = 0;
911 for (i = 0; i < DDIR_RWDIR_CNT; i++)
912 bytes_done[i] = td->bytes_done[i];
914 if (in_ramp_time(td))
915 td_set_runstate(td, TD_RAMP);
917 td_set_runstate(td, TD_RUNNING);
921 total_bytes = td->o.size;
923 * Allow random overwrite workloads to write up to io_size
924 * before starting verification phase as 'size' doesn't apply.
926 if (td_write(td) && td_random(td) && td->o.norandommap)
927 total_bytes = max(total_bytes, (uint64_t) td->o.io_size);
929 * If verify_backlog is enabled, we'll run the verify in this
930 * handler as well. For that case, we may need up to twice the
933 if (td->o.verify != VERIFY_NONE &&
934 (td_write(td) && td->o.verify_backlog))
935 total_bytes += td->o.size;
937 /* In trimwrite mode, each byte is trimmed and then written, so
938 * allow total_bytes to be twice as big */
939 if (td_trimwrite(td))
940 total_bytes += td->total_io_size;
942 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
943 (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) ||
945 struct timespec comp_time;
950 check_update_rusage(td);
952 if (td->terminate || td->done)
957 if (runtime_exceeded(td, &td->ts_cache)) {
958 __update_ts_cache(td);
959 if (runtime_exceeded(td, &td->ts_cache)) {
960 fio_mark_td_terminate(td);
965 if (flow_threshold_exceeded(td))
969 * Break if we exceeded the bytes. The exception is time
970 * based runs, but we still need to break out of the loop
971 * for those to run verification, if enabled.
972 * Jobs read from iolog do not use this stop condition.
974 if (bytes_issued >= total_bytes &&
975 !td->o.read_iolog_file &&
976 (!td->o.time_based ||
977 (td->o.time_based && td->o.verify != VERIFY_NONE)))
981 if (IS_ERR_OR_NULL(io_u)) {
982 int err = PTR_ERR(io_u);
990 if (td->o.latency_target)
995 if (io_u->ddir == DDIR_WRITE && td->flags & TD_F_DO_VERIFY)
996 populate_verify_io_u(td, io_u);
1001 * Add verification end_io handler if:
1002 * - Asked to verify (!td_rw(td))
1003 * - Or the io_u is from our verify list (mixed write/ver)
1005 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
1006 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
1008 if (!td->o.verify_pattern_bytes) {
1009 io_u->rand_seed = __rand(&td->verify_state);
1010 if (sizeof(int) != sizeof(long *))
1011 io_u->rand_seed *= __rand(&td->verify_state);
1014 if (verify_state_should_stop(td, io_u)) {
1019 if (td->o.verify_async)
1020 io_u->end_io = verify_io_u_async;
1022 io_u->end_io = verify_io_u;
1023 td_set_runstate(td, TD_VERIFYING);
1024 } else if (in_ramp_time(td))
1025 td_set_runstate(td, TD_RAMP);
1027 td_set_runstate(td, TD_RUNNING);
1030 * Always log IO before it's issued, so we know the specific
1031 * order of it. The logged unit will track when the IO has
1034 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1036 td->o.verify != VERIFY_NONE &&
1037 !td->o.experimental_verify)
1038 log_io_piece(td, io_u);
1040 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1041 const unsigned long long blen = io_u->xfer_buflen;
1042 const enum fio_ddir __ddir = acct_ddir(io_u);
1047 workqueue_enqueue(&td->io_wq, &io_u->work);
1050 if (ddir_rw(__ddir)) {
1051 td->io_issues[__ddir]++;
1052 td->io_issue_bytes[__ddir] += blen;
1053 td->rate_io_issue_bytes[__ddir] += blen;
1056 if (should_check_rate(td))
1057 td->rate_next_io_time[__ddir] = usec_for_io(td, __ddir);
1060 ret = io_u_submit(td, io_u);
1062 if (should_check_rate(td))
1063 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
1065 if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
1069 * See if we need to complete some commands. Note that
1070 * we can get BUSY even without IO queued, if the
1071 * system is resource starved.
1074 full = queue_full(td) ||
1075 (ret == FIO_Q_BUSY && td->cur_depth);
1076 if (full || io_in_polling(td))
1077 ret = wait_for_completions(td, &comp_time);
1081 if (!ddir_rw_sum(td->bytes_done) &&
1082 !td_ioengine_flagged(td, FIO_NOIO))
1085 if (!in_ramp_time(td) && should_check_rate(td)) {
1086 if (check_min_rate(td, &comp_time)) {
1087 if (exitall_on_terminate || td->o.exitall_error)
1088 fio_terminate_threads(td->groupid);
1089 td_verror(td, EIO, "check_min_rate");
1093 if (!in_ramp_time(td) && td->o.latency_target)
1094 lat_target_check(td);
1096 if (ddir_rw(ddir) && td->o.thinktime)
1097 handle_thinktime(td, ddir);
1100 check_update_rusage(td);
1102 if (td->trim_entries)
1103 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
1105 if (td->o.fill_device && td->error == ENOSPC) {
1107 fio_mark_td_terminate(td);
1112 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1113 workqueue_flush(&td->io_wq);
1119 ret = io_u_queued_complete(td, i);
1120 if (td->o.fill_device && td->error == ENOSPC)
1124 if (should_fsync(td) && td->o.end_fsync) {
1125 td_set_runstate(td, TD_FSYNCING);
1127 for_each_file(td, f, i) {
1128 if (!fio_file_fsync(td, f))
1131 log_err("fio: end_fsync failed for file %s\n",
1136 cleanup_pending_aio(td);
1139 * stop job if we failed doing any IO
1141 if (!ddir_rw_sum(td->this_io_bytes))
1144 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1145 bytes_done[i] = td->bytes_done[i] - bytes_done[i];
1148 static void free_file_completion_logging(struct thread_data *td)
1153 for_each_file(td, f, i) {
1154 if (!f->last_write_comp)
1156 sfree(f->last_write_comp);
1160 static int init_file_completion_logging(struct thread_data *td,
1166 if (td->o.verify == VERIFY_NONE || !td->o.verify_state_save)
1169 for_each_file(td, f, i) {
1170 f->last_write_comp = scalloc(depth, sizeof(uint64_t));
1171 if (!f->last_write_comp)
1178 free_file_completion_logging(td);
1179 log_err("fio: failed to alloc write comp data\n");
1183 static void cleanup_io_u(struct thread_data *td)
1187 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
1189 if (td->io_ops->io_u_free)
1190 td->io_ops->io_u_free(td, io_u);
1192 fio_memfree(io_u, sizeof(*io_u), td_offload_overlap(td));
1197 io_u_rexit(&td->io_u_requeues);
1198 io_u_qexit(&td->io_u_freelist, false);
1199 io_u_qexit(&td->io_u_all, td_offload_overlap(td));
1201 free_file_completion_logging(td);
1204 static int init_io_u(struct thread_data *td)
1207 int cl_align, i, max_units;
1210 max_units = td->o.iodepth;
1213 err += !io_u_rinit(&td->io_u_requeues, td->o.iodepth);
1214 err += !io_u_qinit(&td->io_u_freelist, td->o.iodepth, false);
1215 err += !io_u_qinit(&td->io_u_all, td->o.iodepth, td_offload_overlap(td));
1218 log_err("fio: failed setting up IO queues\n");
1222 cl_align = os_cache_line_size();
1224 for (i = 0; i < max_units; i++) {
1230 ptr = fio_memalign(cl_align, sizeof(*io_u), td_offload_overlap(td));
1232 log_err("fio: unable to allocate aligned memory\n");
1237 memset(io_u, 0, sizeof(*io_u));
1238 INIT_FLIST_HEAD(&io_u->verify_list);
1239 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1242 io_u->flags = IO_U_F_FREE;
1243 io_u_qpush(&td->io_u_freelist, io_u);
1246 * io_u never leaves this stack, used for iteration of all
1249 io_u_qpush(&td->io_u_all, io_u);
1251 if (td->io_ops->io_u_init) {
1252 int ret = td->io_ops->io_u_init(td, io_u);
1255 log_err("fio: failed to init engine data: %d\n", ret);
1261 init_io_u_buffers(td);
1263 if (init_file_completion_logging(td, max_units))
1269 int init_io_u_buffers(struct thread_data *td)
1272 unsigned long long max_bs, min_write;
1277 max_units = td->o.iodepth;
1278 max_bs = td_max_bs(td);
1279 min_write = td->o.min_bs[DDIR_WRITE];
1280 td->orig_buffer_size = (unsigned long long) max_bs
1281 * (unsigned long long) max_units;
1283 if (td_ioengine_flagged(td, FIO_NOIO) || !(td_read(td) || td_write(td)))
1287 * if we may later need to do address alignment, then add any
1288 * possible adjustment here so that we don't cause a buffer
1289 * overflow later. this adjustment may be too much if we get
1290 * lucky and the allocator gives us an aligned address.
1292 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1293 td_ioengine_flagged(td, FIO_RAWIO))
1294 td->orig_buffer_size += page_mask + td->o.mem_align;
1296 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1297 unsigned long long bs;
1299 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1300 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1303 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1304 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1308 if (data_xfer && allocate_io_mem(td))
1311 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1312 td_ioengine_flagged(td, FIO_RAWIO))
1313 p = PTR_ALIGN(td->orig_buffer, page_mask) + td->o.mem_align;
1315 p = td->orig_buffer;
1317 for (i = 0; i < max_units; i++) {
1318 io_u = td->io_u_all.io_us[i];
1319 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1323 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1326 io_u_fill_buffer(td, io_u, min_write, max_bs);
1327 if (td_write(td) && td->o.verify_pattern_bytes) {
1329 * Fill the buffer with the pattern if we are
1330 * going to be doing writes.
1332 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1342 * This function is Linux specific.
1343 * FIO_HAVE_IOSCHED_SWITCH enabled currently means it's Linux.
1345 static int switch_ioscheduler(struct thread_data *td)
1347 #ifdef FIO_HAVE_IOSCHED_SWITCH
1348 char tmp[256], tmp2[128], *p;
1352 if (td_ioengine_flagged(td, FIO_DISKLESSIO))
1355 assert(td->files && td->files[0]);
1356 sprintf(tmp, "%s/queue/scheduler", td->files[0]->du->sysfs_root);
1358 f = fopen(tmp, "r+");
1360 if (errno == ENOENT) {
1361 log_err("fio: os or kernel doesn't support IO scheduler"
1365 td_verror(td, errno, "fopen iosched");
1372 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1373 if (ferror(f) || ret != 1) {
1374 td_verror(td, errno, "fwrite");
1382 * Read back and check that the selected scheduler is now the default.
1384 ret = fread(tmp, 1, sizeof(tmp) - 1, f);
1385 if (ferror(f) || ret < 0) {
1386 td_verror(td, errno, "fread");
1392 * either a list of io schedulers or "none\n" is expected. Strip the
1399 * Write to "none" entry doesn't fail, so check the result here.
1401 if (!strcmp(tmp, "none")) {
1402 log_err("fio: io scheduler is not tunable\n");
1407 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1408 if (!strstr(tmp, tmp2)) {
1409 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1410 td_verror(td, EINVAL, "iosched_switch");
1422 static bool keep_running(struct thread_data *td)
1424 unsigned long long limit;
1430 if (td->o.time_based)
1436 if (exceeds_number_ios(td))
1440 limit = td->o.io_size;
1444 if (limit != -1ULL && ddir_rw_sum(td->io_bytes) < limit) {
1448 * If the difference is less than the maximum IO size, we
1451 diff = limit - ddir_rw_sum(td->io_bytes);
1452 if (diff < td_max_bs(td))
1455 if (fio_files_done(td) && !td->o.io_size)
1464 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1466 size_t newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1470 str = malloc(newlen);
1471 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1473 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1476 log_err("fio: exec of cmd <%s> failed\n", str);
1483 * Dry run to compute correct state of numberio for verification.
1485 static uint64_t do_dry_run(struct thread_data *td)
1487 td_set_runstate(td, TD_RUNNING);
1489 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1490 (!flist_empty(&td->trim_list)) || !io_complete_bytes_exceeded(td)) {
1494 if (td->terminate || td->done)
1497 io_u = get_io_u(td);
1498 if (IS_ERR_OR_NULL(io_u))
1501 io_u_set(td, io_u, IO_U_F_FLIGHT);
1504 if (ddir_rw(acct_ddir(io_u)))
1505 td->io_issues[acct_ddir(io_u)]++;
1506 if (ddir_rw(io_u->ddir)) {
1507 io_u_mark_depth(td, 1);
1508 td->ts.total_io_u[io_u->ddir]++;
1511 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1513 td->o.verify != VERIFY_NONE &&
1514 !td->o.experimental_verify)
1515 log_io_piece(td, io_u);
1517 ret = io_u_sync_complete(td, io_u);
1521 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1525 struct thread_data *td;
1526 struct sk_out *sk_out;
1530 * Entry point for the thread based jobs. The process based jobs end up
1531 * here as well, after a little setup.
1533 static void *thread_main(void *data)
1535 struct fork_data *fd = data;
1536 unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
1537 struct thread_data *td = fd->td;
1538 struct thread_options *o = &td->o;
1539 struct sk_out *sk_out = fd->sk_out;
1540 uint64_t bytes_done[DDIR_RWDIR_CNT];
1541 int deadlock_loop_cnt;
1542 bool clear_state, did_some_io;
1545 sk_out_assign(sk_out);
1548 if (!o->use_thread) {
1554 fio_local_clock_init();
1556 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1559 fio_server_send_start(td);
1561 INIT_FLIST_HEAD(&td->io_log_list);
1562 INIT_FLIST_HEAD(&td->io_hist_list);
1563 INIT_FLIST_HEAD(&td->verify_list);
1564 INIT_FLIST_HEAD(&td->trim_list);
1565 td->io_hist_tree = RB_ROOT;
1567 ret = mutex_cond_init_pshared(&td->io_u_lock, &td->free_cond);
1569 td_verror(td, ret, "mutex_cond_init_pshared");
1572 ret = cond_init_pshared(&td->verify_cond);
1574 td_verror(td, ret, "mutex_cond_pshared");
1578 td_set_runstate(td, TD_INITIALIZED);
1579 dprint(FD_MUTEX, "up startup_sem\n");
1580 fio_sem_up(startup_sem);
1581 dprint(FD_MUTEX, "wait on td->sem\n");
1582 fio_sem_down(td->sem);
1583 dprint(FD_MUTEX, "done waiting on td->sem\n");
1586 * A new gid requires privilege, so we need to do this before setting
1589 if (o->gid != -1U && setgid(o->gid)) {
1590 td_verror(td, errno, "setgid");
1593 if (o->uid != -1U && setuid(o->uid)) {
1594 td_verror(td, errno, "setuid");
1598 td_zone_gen_index(td);
1601 * Do this early, we don't want the compress threads to be limited
1602 * to the same CPUs as the IO workers. So do this before we set
1603 * any potential CPU affinity
1605 if (iolog_compress_init(td, sk_out))
1609 * If we have a gettimeofday() thread, make sure we exclude that
1610 * thread from this job
1613 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1616 * Set affinity first, in case it has an impact on the memory
1619 if (fio_option_is_set(o, cpumask)) {
1620 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1621 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1623 log_err("fio: no CPUs set\n");
1624 log_err("fio: Try increasing number of available CPUs\n");
1625 td_verror(td, EINVAL, "cpus_split");
1629 ret = fio_setaffinity(td->pid, o->cpumask);
1631 td_verror(td, errno, "cpu_set_affinity");
1636 #ifdef CONFIG_LIBNUMA
1637 /* numa node setup */
1638 if (fio_option_is_set(o, numa_cpunodes) ||
1639 fio_option_is_set(o, numa_memnodes)) {
1640 struct bitmask *mask;
1642 if (numa_available() < 0) {
1643 td_verror(td, errno, "Does not support NUMA API\n");
1647 if (fio_option_is_set(o, numa_cpunodes)) {
1648 mask = numa_parse_nodestring(o->numa_cpunodes);
1649 ret = numa_run_on_node_mask(mask);
1650 numa_free_nodemask(mask);
1652 td_verror(td, errno, \
1653 "numa_run_on_node_mask failed\n");
1658 if (fio_option_is_set(o, numa_memnodes)) {
1660 if (o->numa_memnodes)
1661 mask = numa_parse_nodestring(o->numa_memnodes);
1663 switch (o->numa_mem_mode) {
1664 case MPOL_INTERLEAVE:
1665 numa_set_interleave_mask(mask);
1668 numa_set_membind(mask);
1671 numa_set_localalloc();
1673 case MPOL_PREFERRED:
1674 numa_set_preferred(o->numa_mem_prefer_node);
1682 numa_free_nodemask(mask);
1688 if (fio_pin_memory(td))
1692 * May alter parameters that init_io_u() will use, so we need to
1695 if (!init_iolog(td))
1701 if (o->verify_async && verify_async_init(td))
1704 if (fio_option_is_set(o, ioprio) ||
1705 fio_option_is_set(o, ioprio_class)) {
1706 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1708 td_verror(td, errno, "ioprio_set");
1713 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1717 if (nice(o->nice) == -1 && errno != 0) {
1718 td_verror(td, errno, "nice");
1722 if (o->ioscheduler && switch_ioscheduler(td))
1725 if (!o->create_serialize && setup_files(td))
1731 if (!init_random_map(td))
1734 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1737 if (o->pre_read && !pre_read_files(td))
1740 fio_verify_init(td);
1742 if (rate_submit_init(td, sk_out))
1745 set_epoch_time(td, o->log_unix_epoch);
1746 fio_getrusage(&td->ru_start);
1747 memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
1748 memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
1749 memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch));
1751 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1752 o->ratemin[DDIR_TRIM]) {
1753 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1754 sizeof(td->bw_sample_time));
1755 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1756 sizeof(td->bw_sample_time));
1757 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1758 sizeof(td->bw_sample_time));
1761 memset(bytes_done, 0, sizeof(bytes_done));
1762 clear_state = false;
1763 did_some_io = false;
1765 while (keep_running(td)) {
1766 uint64_t verify_bytes;
1768 fio_gettime(&td->start, NULL);
1769 memcpy(&td->ts_cache, &td->start, sizeof(td->start));
1772 clear_io_state(td, 0);
1774 if (o->unlink_each_loop && unlink_all_files(td))
1778 prune_io_piece_log(td);
1780 if (td->o.verify_only && td_write(td))
1781 verify_bytes = do_dry_run(td);
1783 do_io(td, bytes_done);
1785 if (!ddir_rw_sum(bytes_done)) {
1786 fio_mark_td_terminate(td);
1789 verify_bytes = bytes_done[DDIR_WRITE] +
1790 bytes_done[DDIR_TRIM];
1795 * If we took too long to shut down, the main thread could
1796 * already consider us reaped/exited. If that happens, break
1799 if (td->runstate >= TD_EXITED)
1805 * Make sure we've successfully updated the rusage stats
1806 * before waiting on the stat mutex. Otherwise we could have
1807 * the stat thread holding stat mutex and waiting for
1808 * the rusage_sem, which would never get upped because
1809 * this thread is waiting for the stat mutex.
1811 deadlock_loop_cnt = 0;
1813 check_update_rusage(td);
1814 if (!fio_sem_down_trylock(stat_sem))
1817 if (deadlock_loop_cnt++ > 5000) {
1818 log_err("fio seems to be stuck grabbing stat_sem, forcibly exiting\n");
1819 td->error = EDEADLK;
1824 if (td_read(td) && td->io_bytes[DDIR_READ])
1825 update_runtime(td, elapsed_us, DDIR_READ);
1826 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1827 update_runtime(td, elapsed_us, DDIR_WRITE);
1828 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1829 update_runtime(td, elapsed_us, DDIR_TRIM);
1830 fio_gettime(&td->start, NULL);
1831 fio_sem_up(stat_sem);
1833 if (td->error || td->terminate)
1836 if (!o->do_verify ||
1837 o->verify == VERIFY_NONE ||
1838 td_ioengine_flagged(td, FIO_UNIDIR))
1841 if (ddir_rw_sum(bytes_done))
1844 clear_io_state(td, 0);
1846 fio_gettime(&td->start, NULL);
1848 do_verify(td, verify_bytes);
1851 * See comment further up for why this is done here.
1853 check_update_rusage(td);
1855 fio_sem_down(stat_sem);
1856 update_runtime(td, elapsed_us, DDIR_READ);
1857 fio_gettime(&td->start, NULL);
1858 fio_sem_up(stat_sem);
1860 if (td->error || td->terminate)
1865 * If td ended up with no I/O when it should have had,
1866 * then something went wrong unless FIO_NOIO or FIO_DISKLESSIO.
1867 * (Are we not missing other flags that can be ignored ?)
1869 if ((td->o.size || td->o.io_size) && !ddir_rw_sum(bytes_done) &&
1870 !did_some_io && !td->o.create_only &&
1871 !(td_ioengine_flagged(td, FIO_NOIO) ||
1872 td_ioengine_flagged(td, FIO_DISKLESSIO)))
1873 log_err("%s: No I/O performed by %s, "
1874 "perhaps try --debug=io option for details?\n",
1875 td->o.name, td->io_ops->name);
1878 * Acquire this lock if we were doing overlap checking in
1879 * offload mode so that we don't clean up this job while
1880 * another thread is checking its io_u's for overlap
1882 if (td_offload_overlap(td))
1883 pthread_mutex_lock(&overlap_check);
1884 td_set_runstate(td, TD_FINISHING);
1885 if (td_offload_overlap(td))
1886 pthread_mutex_unlock(&overlap_check);
1888 update_rusage_stat(td);
1889 td->ts.total_run_time = mtime_since_now(&td->epoch);
1890 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1891 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1892 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1894 if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
1895 (td->o.verify != VERIFY_NONE && td_write(td)))
1896 verify_save_state(td->thread_number);
1898 fio_unpin_memory(td);
1900 td_writeout_logs(td, true);
1902 iolog_compress_exit(td);
1903 rate_submit_exit(td);
1905 if (o->exec_postrun)
1906 exec_string(o, o->exec_postrun, (const char *)"postrun");
1908 if (exitall_on_terminate || (o->exitall_error && td->error))
1909 fio_terminate_threads(td->groupid);
1913 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1916 if (o->verify_async)
1917 verify_async_exit(td);
1919 close_and_free_files(td);
1922 cgroup_shutdown(td, cgroup_mnt);
1923 verify_free_state(td);
1924 td_zone_free_index(td);
1926 if (fio_option_is_set(o, cpumask)) {
1927 ret = fio_cpuset_exit(&o->cpumask);
1929 td_verror(td, ret, "fio_cpuset_exit");
1933 * do this very late, it will log file closing as well
1935 if (o->write_iolog_file)
1936 write_iolog_close(td);
1937 if (td->io_log_rfile)
1938 fclose(td->io_log_rfile);
1940 td_set_runstate(td, TD_EXITED);
1943 * Do this last after setting our runstate to exited, so we
1944 * know that the stat thread is signaled.
1946 check_update_rusage(td);
1949 return (void *) (uintptr_t) td->error;
1953 * Run over the job map and reap the threads that have exited, if any.
1955 static void reap_threads(unsigned int *nr_running, uint64_t *t_rate,
1958 struct thread_data *td;
1959 unsigned int cputhreads, realthreads, pending;
1963 * reap exited threads (TD_EXITED -> TD_REAPED)
1965 realthreads = pending = cputhreads = 0;
1966 for_each_td(td, i) {
1969 if (!strcmp(td->o.ioengine, "cpuio"))
1978 if (td->runstate == TD_REAPED)
1980 if (td->o.use_thread) {
1981 if (td->runstate == TD_EXITED) {
1982 td_set_runstate(td, TD_REAPED);
1989 if (td->runstate == TD_EXITED)
1993 * check if someone quit or got killed in an unusual way
1995 ret = waitpid(td->pid, &status, flags);
1997 if (errno == ECHILD) {
1998 log_err("fio: pid=%d disappeared %d\n",
1999 (int) td->pid, td->runstate);
2001 td_set_runstate(td, TD_REAPED);
2005 } else if (ret == td->pid) {
2006 if (WIFSIGNALED(status)) {
2007 int sig = WTERMSIG(status);
2009 if (sig != SIGTERM && sig != SIGUSR2)
2010 log_err("fio: pid=%d, got signal=%d\n",
2011 (int) td->pid, sig);
2013 td_set_runstate(td, TD_REAPED);
2016 if (WIFEXITED(status)) {
2017 if (WEXITSTATUS(status) && !td->error)
2018 td->error = WEXITSTATUS(status);
2020 td_set_runstate(td, TD_REAPED);
2026 * If the job is stuck, do a forceful timeout of it and
2029 if (td->terminate &&
2030 td->runstate < TD_FSYNCING &&
2031 time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) {
2032 log_err("fio: job '%s' (state=%d) hasn't exited in "
2033 "%lu seconds, it appears to be stuck. Doing "
2034 "forceful exit of this job.\n",
2035 td->o.name, td->runstate,
2036 (unsigned long) time_since_now(&td->terminate_time));
2037 td_set_runstate(td, TD_REAPED);
2042 * thread is not dead, continue
2048 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
2049 (*t_rate) -= ddir_rw_sum(td->o.rate);
2056 done_secs += mtime_since_now(&td->epoch) / 1000;
2057 profile_td_exit(td);
2060 if (*nr_running == cputhreads && !pending && realthreads)
2061 fio_terminate_threads(TERMINATE_ALL);
2064 static bool __check_trigger_file(void)
2071 if (stat(trigger_file, &sb))
2074 if (unlink(trigger_file) < 0)
2075 log_err("fio: failed to unlink %s: %s\n", trigger_file,
2081 static bool trigger_timedout(void)
2083 if (trigger_timeout)
2084 if (time_since_genesis() >= trigger_timeout) {
2085 trigger_timeout = 0;
2092 void exec_trigger(const char *cmd)
2096 if (!cmd || cmd[0] == '\0')
2101 log_err("fio: failed executing %s trigger\n", cmd);
2104 void check_trigger_file(void)
2106 if (__check_trigger_file() || trigger_timedout()) {
2108 fio_clients_send_trigger(trigger_remote_cmd);
2110 verify_save_state(IO_LIST_ALL);
2111 fio_terminate_threads(TERMINATE_ALL);
2112 exec_trigger(trigger_cmd);
2117 static int fio_verify_load_state(struct thread_data *td)
2121 if (!td->o.verify_state)
2127 ret = fio_server_get_verify_state(td->o.name,
2128 td->thread_number - 1, &data);
2130 verify_assign_state(td, data);
2132 ret = verify_load_state(td, "local");
2137 static void do_usleep(unsigned int usecs)
2139 check_for_running_stats();
2140 check_trigger_file();
2144 static bool check_mount_writes(struct thread_data *td)
2149 if (!td_write(td) || td->o.allow_mounted_write)
2153 * If FIO_HAVE_CHARDEV_SIZE is defined, it's likely that chrdevs
2154 * are mkfs'd and mounted.
2156 for_each_file(td, f, i) {
2157 #ifdef FIO_HAVE_CHARDEV_SIZE
2158 if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR)
2160 if (f->filetype != FIO_TYPE_BLOCK)
2163 if (device_is_mounted(f->file_name))
2169 log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.\n", f->file_name);
2173 static bool waitee_running(struct thread_data *me)
2175 const char *waitee = me->o.wait_for;
2176 const char *self = me->o.name;
2177 struct thread_data *td;
2183 for_each_td(td, i) {
2184 if (!strcmp(td->o.name, self) || strcmp(td->o.name, waitee))
2187 if (td->runstate < TD_EXITED) {
2188 dprint(FD_PROCESS, "%s fenced by %s(%s)\n",
2190 runstate_to_name(td->runstate));
2195 dprint(FD_PROCESS, "%s: %s completed, can run\n", self, waitee);
2200 * Main function for kicking off and reaping jobs, as needed.
2202 static void run_threads(struct sk_out *sk_out)
2204 struct thread_data *td;
2205 unsigned int i, todo, nr_running, nr_started;
2206 uint64_t m_rate, t_rate;
2209 if (fio_gtod_offload && fio_start_gtod_thread())
2212 fio_idle_prof_init();
2216 nr_thread = nr_process = 0;
2217 for_each_td(td, i) {
2218 if (check_mount_writes(td))
2220 if (td->o.use_thread)
2226 if (output_format & FIO_OUTPUT_NORMAL) {
2227 struct buf_output out;
2229 buf_output_init(&out);
2230 __log_buf(&out, "Starting ");
2232 __log_buf(&out, "%d thread%s", nr_thread,
2233 nr_thread > 1 ? "s" : "");
2236 __log_buf(&out, " and ");
2237 __log_buf(&out, "%d process%s", nr_process,
2238 nr_process > 1 ? "es" : "");
2240 __log_buf(&out, "\n");
2241 log_info_buf(out.buf, out.buflen);
2242 buf_output_free(&out);
2245 todo = thread_number;
2248 m_rate = t_rate = 0;
2250 for_each_td(td, i) {
2251 print_status_init(td->thread_number - 1);
2253 if (!td->o.create_serialize)
2256 if (fio_verify_load_state(td))
2260 * do file setup here so it happens sequentially,
2261 * we don't want X number of threads getting their
2262 * client data interspersed on disk
2264 if (setup_files(td)) {
2268 log_err("fio: pid=%d, err=%d/%s\n",
2269 (int) td->pid, td->error, td->verror);
2270 td_set_runstate(td, TD_REAPED);
2277 * for sharing to work, each job must always open
2278 * its own files. so close them, if we opened them
2281 for_each_file(td, f, j) {
2282 if (fio_file_open(f))
2283 td_io_close_file(td, f);
2288 /* start idle threads before io threads start to run */
2289 fio_idle_prof_start();
2294 struct thread_data *map[REAL_MAX_JOBS];
2295 struct timespec this_start;
2296 int this_jobs = 0, left;
2297 struct fork_data *fd;
2300 * create threads (TD_NOT_CREATED -> TD_CREATED)
2302 for_each_td(td, i) {
2303 if (td->runstate != TD_NOT_CREATED)
2307 * never got a chance to start, killed by other
2308 * thread for some reason
2310 if (td->terminate) {
2315 if (td->o.start_delay) {
2316 spent = utime_since_genesis();
2318 if (td->o.start_delay > spent)
2322 if (td->o.stonewall && (nr_started || nr_running)) {
2323 dprint(FD_PROCESS, "%s: stonewall wait\n",
2328 if (waitee_running(td)) {
2329 dprint(FD_PROCESS, "%s: waiting for %s\n",
2330 td->o.name, td->o.wait_for);
2336 td->rusage_sem = fio_sem_init(FIO_SEM_LOCKED);
2337 td->update_rusage = 0;
2340 * Set state to created. Thread will transition
2341 * to TD_INITIALIZED when it's done setting up.
2343 td_set_runstate(td, TD_CREATED);
2344 map[this_jobs++] = td;
2347 fd = calloc(1, sizeof(*fd));
2349 fd->sk_out = sk_out;
2351 if (td->o.use_thread) {
2354 dprint(FD_PROCESS, "will pthread_create\n");
2355 ret = pthread_create(&td->thread, NULL,
2358 log_err("pthread_create: %s\n",
2365 ret = pthread_detach(td->thread);
2367 log_err("pthread_detach: %s",
2371 dprint(FD_PROCESS, "will fork\n");
2376 ret = (int)(uintptr_t)thread_main(fd);
2378 } else if (i == fio_debug_jobno)
2379 *fio_debug_jobp = pid;
2381 dprint(FD_MUTEX, "wait on startup_sem\n");
2382 if (fio_sem_down_timeout(startup_sem, 10000)) {
2383 log_err("fio: job startup hung? exiting.\n");
2384 fio_terminate_threads(TERMINATE_ALL);
2390 dprint(FD_MUTEX, "done waiting on startup_sem\n");
2394 * Wait for the started threads to transition to
2397 fio_gettime(&this_start, NULL);
2399 while (left && !fio_abort) {
2400 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
2405 for (i = 0; i < this_jobs; i++) {
2409 if (td->runstate == TD_INITIALIZED) {
2412 } else if (td->runstate >= TD_EXITED) {
2416 nr_running++; /* work-around... */
2422 log_err("fio: %d job%s failed to start\n", left,
2423 left > 1 ? "s" : "");
2424 for (i = 0; i < this_jobs; i++) {
2428 kill(td->pid, SIGTERM);
2434 * start created threads (TD_INITIALIZED -> TD_RUNNING).
2436 for_each_td(td, i) {
2437 if (td->runstate != TD_INITIALIZED)
2440 if (in_ramp_time(td))
2441 td_set_runstate(td, TD_RAMP);
2443 td_set_runstate(td, TD_RUNNING);
2446 m_rate += ddir_rw_sum(td->o.ratemin);
2447 t_rate += ddir_rw_sum(td->o.rate);
2449 fio_sem_up(td->sem);
2452 reap_threads(&nr_running, &t_rate, &m_rate);
2458 while (nr_running) {
2459 reap_threads(&nr_running, &t_rate, &m_rate);
2463 fio_idle_prof_stop();
2468 static void free_disk_util(void)
2470 disk_util_prune_entries();
2471 helper_thread_destroy();
2474 int fio_backend(struct sk_out *sk_out)
2476 struct thread_data *td;
2480 if (load_profile(exec_profile))
2483 exec_profile = NULL;
2489 struct log_params p = {
2490 .log_type = IO_LOG_TYPE_BW,
2493 setup_log(&agg_io_log[DDIR_READ], &p, "agg-read_bw.log");
2494 setup_log(&agg_io_log[DDIR_WRITE], &p, "agg-write_bw.log");
2495 setup_log(&agg_io_log[DDIR_TRIM], &p, "agg-trim_bw.log");
2498 startup_sem = fio_sem_init(FIO_SEM_LOCKED);
2500 is_local_backend = true;
2501 if (startup_sem == NULL)
2506 helper_thread_create(startup_sem, sk_out);
2508 cgroup_list = smalloc(sizeof(*cgroup_list));
2510 INIT_FLIST_HEAD(cgroup_list);
2512 run_threads(sk_out);
2514 helper_thread_exit();
2519 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2520 struct io_log *log = agg_io_log[i];
2522 flush_log(log, false);
2528 for_each_td(td, i) {
2529 steadystate_free(td);
2530 fio_options_free(td);
2531 if (td->rusage_sem) {
2532 fio_sem_remove(td->rusage_sem);
2533 td->rusage_sem = NULL;
2535 fio_sem_remove(td->sem);
2541 cgroup_kill(cgroup_list);
2545 fio_sem_remove(startup_sem);