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 #ifndef FIO_NO_HAVE_SHM_H
52 #include "lib/memalign.h"
54 #include "lib/getrusage.h"
57 #include "workqueue.h"
58 #include "lib/mountcheck.h"
59 #include "rate-submit.h"
60 #include "helper_thread.h"
63 static struct fio_sem *startup_sem;
64 static struct flist_head *cgroup_list;
65 static char *cgroup_mnt;
66 static int exit_value;
67 static volatile int fio_abort;
68 static unsigned int nr_process = 0;
69 static unsigned int nr_thread = 0;
71 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
74 unsigned int thread_number = 0;
75 unsigned int stat_number = 0;
78 unsigned long done_secs = 0;
80 #define JOB_START_TIMEOUT (5 * 1000)
82 static void sig_int(int sig)
86 fio_server_got_signal(sig);
88 log_info("\nfio: terminating on signal %d\n", sig);
93 fio_terminate_threads(TERMINATE_ALL);
97 void sig_show_status(int sig)
99 show_running_run_stats();
102 static void set_sig_handlers(void)
104 struct sigaction act;
106 memset(&act, 0, sizeof(act));
107 act.sa_handler = sig_int;
108 act.sa_flags = SA_RESTART;
109 sigaction(SIGINT, &act, NULL);
111 memset(&act, 0, sizeof(act));
112 act.sa_handler = sig_int;
113 act.sa_flags = SA_RESTART;
114 sigaction(SIGTERM, &act, NULL);
116 /* Windows uses SIGBREAK as a quit signal from other applications */
118 memset(&act, 0, sizeof(act));
119 act.sa_handler = sig_int;
120 act.sa_flags = SA_RESTART;
121 sigaction(SIGBREAK, &act, NULL);
124 memset(&act, 0, sizeof(act));
125 act.sa_handler = sig_show_status;
126 act.sa_flags = SA_RESTART;
127 sigaction(SIGUSR1, &act, NULL);
130 memset(&act, 0, sizeof(act));
131 act.sa_handler = sig_int;
132 act.sa_flags = SA_RESTART;
133 sigaction(SIGPIPE, &act, NULL);
138 * Check if we are above the minimum rate given.
140 static bool __check_min_rate(struct thread_data *td, struct timespec *now,
143 unsigned long long bytes = 0;
144 unsigned long iops = 0;
147 unsigned int ratemin = 0;
148 unsigned int rate_iops = 0;
149 unsigned int rate_iops_min = 0;
151 assert(ddir_rw(ddir));
153 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
157 * allow a 2 second settle period in the beginning
159 if (mtime_since(&td->start, now) < 2000)
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];
169 * if rate blocks is set, sample is running
171 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
172 spent = mtime_since(&td->lastrate[ddir], now);
173 if (spent < td->o.ratecycle)
176 if (td->o.rate[ddir] || td->o.ratemin[ddir]) {
178 * check bandwidth specified rate
180 if (bytes < td->rate_bytes[ddir]) {
181 log_err("%s: rate_min=%uB/s not met, only transferred %lluB\n",
182 td->o.name, ratemin, bytes);
186 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
190 if (rate < ratemin ||
191 bytes < td->rate_bytes[ddir]) {
192 log_err("%s: rate_min=%uB/s not met, got %luB/s\n",
193 td->o.name, ratemin, rate);
199 * checks iops specified rate
201 if (iops < rate_iops) {
202 log_err("%s: rate_iops_min=%u not met, only performed %lu IOs\n",
203 td->o.name, rate_iops, iops);
207 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
211 if (rate < rate_iops_min ||
212 iops < td->rate_blocks[ddir]) {
213 log_err("%s: rate_iops_min=%u not met, got %lu IOPS\n",
214 td->o.name, rate_iops_min, rate);
221 td->rate_bytes[ddir] = bytes;
222 td->rate_blocks[ddir] = iops;
223 memcpy(&td->lastrate[ddir], now, sizeof(*now));
227 static bool check_min_rate(struct thread_data *td, struct timespec *now)
231 if (td->bytes_done[DDIR_READ])
232 ret |= __check_min_rate(td, now, DDIR_READ);
233 if (td->bytes_done[DDIR_WRITE])
234 ret |= __check_min_rate(td, now, DDIR_WRITE);
235 if (td->bytes_done[DDIR_TRIM])
236 ret |= __check_min_rate(td, now, DDIR_TRIM);
242 * When job exits, we can cancel the in-flight IO if we are using async
243 * io. Attempt to do so.
245 static void cleanup_pending_aio(struct thread_data *td)
250 * get immediately available events, if any
252 r = io_u_queued_complete(td, 0);
257 * now cancel remaining active events
259 if (td->io_ops->cancel) {
263 io_u_qiter(&td->io_u_all, io_u, i) {
264 if (io_u->flags & IO_U_F_FLIGHT) {
265 r = td->io_ops->cancel(td, io_u);
273 r = io_u_queued_complete(td, td->cur_depth);
277 * Helper to handle the final sync of a file. Works just like the normal
278 * io path, just does everything sync.
280 static bool fio_io_sync(struct thread_data *td, struct fio_file *f)
282 struct io_u *io_u = __get_io_u(td);
288 io_u->ddir = DDIR_SYNC;
291 if (td_io_prep(td, io_u)) {
297 ret = td_io_queue(td, io_u);
299 td_verror(td, io_u->error, "td_io_queue");
302 } else if (ret == FIO_Q_QUEUED) {
303 if (td_io_commit(td))
305 if (io_u_queued_complete(td, 1) < 0)
307 } else if (ret == FIO_Q_COMPLETED) {
309 td_verror(td, io_u->error, "td_io_queue");
313 if (io_u_sync_complete(td, io_u) < 0)
315 } else if (ret == FIO_Q_BUSY) {
316 if (td_io_commit(td))
324 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
328 if (fio_file_open(f))
329 return fio_io_sync(td, f);
331 if (td_io_open_file(td, f))
334 ret = fio_io_sync(td, f);
335 td_io_close_file(td, f);
339 static inline void __update_ts_cache(struct thread_data *td)
341 fio_gettime(&td->ts_cache, NULL);
344 static inline void update_ts_cache(struct thread_data *td)
346 if ((++td->ts_cache_nr & td->ts_cache_mask) == td->ts_cache_mask)
347 __update_ts_cache(td);
350 static inline bool runtime_exceeded(struct thread_data *td, struct timespec *t)
352 if (in_ramp_time(td))
356 if (utime_since(&td->epoch, t) >= td->o.timeout)
363 * We need to update the runtime consistently in ms, but keep a running
364 * tally of the current elapsed time in microseconds for sub millisecond
367 static inline void update_runtime(struct thread_data *td,
368 unsigned long long *elapsed_us,
369 const enum fio_ddir ddir)
371 if (ddir == DDIR_WRITE && td_write(td) && td->o.verify_only)
374 td->ts.runtime[ddir] -= (elapsed_us[ddir] + 999) / 1000;
375 elapsed_us[ddir] += utime_since_now(&td->start);
376 td->ts.runtime[ddir] += (elapsed_us[ddir] + 999) / 1000;
379 static bool break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
384 if (ret < 0 || td->error) {
386 enum error_type_bit eb;
391 eb = td_error_type(ddir, err);
392 if (!(td->o.continue_on_error & (1 << eb)))
395 if (td_non_fatal_error(td, eb, err)) {
397 * Continue with the I/Os in case of
400 update_error_count(td, err);
404 } else if (td->o.fill_device && err == ENOSPC) {
406 * We expect to hit this error if
407 * fill_device option is set.
410 fio_mark_td_terminate(td);
414 * Stop the I/O in case of a fatal
417 update_error_count(td, err);
425 static void check_update_rusage(struct thread_data *td)
427 if (td->update_rusage) {
428 td->update_rusage = 0;
429 update_rusage_stat(td);
430 fio_sem_up(td->rusage_sem);
434 static int wait_for_completions(struct thread_data *td, struct timespec *time)
436 const int full = queue_full(td);
440 if (td->flags & TD_F_REGROW_LOGS)
441 return io_u_quiesce(td);
444 * if the queue is full, we MUST reap at least 1 event
446 min_evts = min(td->o.iodepth_batch_complete_min, td->cur_depth);
447 if ((full && !min_evts) || !td->o.iodepth_batch_complete_min)
450 if (time && (__should_check_rate(td, DDIR_READ) ||
451 __should_check_rate(td, DDIR_WRITE) ||
452 __should_check_rate(td, DDIR_TRIM)))
453 fio_gettime(time, NULL);
456 ret = io_u_queued_complete(td, min_evts);
459 } while (full && (td->cur_depth > td->o.iodepth_low));
464 int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
465 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
466 struct timespec *comp_time)
471 case FIO_Q_COMPLETED:
474 clear_io_u(td, io_u);
475 } else if (io_u->resid) {
476 int bytes = io_u->xfer_buflen - io_u->resid;
477 struct fio_file *f = io_u->file;
480 *bytes_issued += bytes;
483 trim_io_piece(td, io_u);
490 unlog_io_piece(td, io_u);
491 td_verror(td, EIO, "full resid");
496 io_u->xfer_buflen = io_u->resid;
497 io_u->xfer_buf += bytes;
498 io_u->offset += bytes;
500 if (ddir_rw(io_u->ddir))
501 td->ts.short_io_u[io_u->ddir]++;
503 if (io_u->offset == f->real_file_size)
506 requeue_io_u(td, &io_u);
509 if (comp_time && (__should_check_rate(td, DDIR_READ) ||
510 __should_check_rate(td, DDIR_WRITE) ||
511 __should_check_rate(td, DDIR_TRIM)))
512 fio_gettime(comp_time, NULL);
514 *ret = io_u_sync_complete(td, io_u);
519 if (td->flags & TD_F_REGROW_LOGS)
523 * when doing I/O (not when verifying),
524 * check for any errors that are to be ignored
532 * if the engine doesn't have a commit hook,
533 * the io_u is really queued. if it does have such
534 * a hook, it has to call io_u_queued() itself.
536 if (td->io_ops->commit == NULL)
537 io_u_queued(td, io_u);
539 *bytes_issued += io_u->xfer_buflen;
543 unlog_io_piece(td, io_u);
544 requeue_io_u(td, &io_u);
545 ret2 = td_io_commit(td);
551 td_verror(td, -(*ret), "td_io_queue");
555 if (break_on_this_error(td, ddir, ret))
561 static inline bool io_in_polling(struct thread_data *td)
563 return !td->o.iodepth_batch_complete_min &&
564 !td->o.iodepth_batch_complete_max;
567 * Unlinks files from thread data fio_file structure
569 static int unlink_all_files(struct thread_data *td)
575 for_each_file(td, f, i) {
576 if (f->filetype != FIO_TYPE_FILE)
578 ret = td_io_unlink_file(td, f);
584 td_verror(td, ret, "unlink_all_files");
590 * Check if io_u will overlap an in-flight IO in the queue
592 static bool in_flight_overlap(struct io_u_queue *q, struct io_u *io_u)
595 struct io_u *check_io_u;
596 unsigned long long x1, x2, y1, y2;
600 x2 = io_u->offset + io_u->buflen;
602 io_u_qiter(q, check_io_u, i) {
603 if (check_io_u->flags & IO_U_F_FLIGHT) {
604 y1 = check_io_u->offset;
605 y2 = check_io_u->offset + check_io_u->buflen;
607 if (x1 < y2 && y1 < x2) {
609 dprint(FD_IO, "in-flight overlap: %llu/%lu, %llu/%lu\n",
611 y1, check_io_u->buflen);
620 static int io_u_submit(struct thread_data *td, struct io_u *io_u)
623 * Check for overlap if the user asked us to, and we have
624 * at least one IO in flight besides this one.
626 if (td->o.serialize_overlap && td->cur_depth > 1 &&
627 in_flight_overlap(&td->io_u_all, io_u))
630 return td_io_queue(td, io_u);
634 * The main verify engine. Runs over the writes we previously submitted,
635 * reads the blocks back in, and checks the crc/md5 of the data.
637 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
644 dprint(FD_VERIFY, "starting loop\n");
647 * sync io first and invalidate cache, to make sure we really
650 for_each_file(td, f, i) {
651 if (!fio_file_open(f))
653 if (fio_io_sync(td, f))
655 if (file_invalidate_cache(td, f))
659 check_update_rusage(td);
665 * verify_state needs to be reset before verification
666 * proceeds so that expected random seeds match actual
667 * random seeds in headers. The main loop will reset
668 * all random number generators if randrepeat is set.
670 if (!td->o.rand_repeatable)
671 td_fill_verify_state_seed(td);
673 td_set_runstate(td, TD_VERIFYING);
676 while (!td->terminate) {
681 check_update_rusage(td);
683 if (runtime_exceeded(td, &td->ts_cache)) {
684 __update_ts_cache(td);
685 if (runtime_exceeded(td, &td->ts_cache)) {
686 fio_mark_td_terminate(td);
691 if (flow_threshold_exceeded(td))
694 if (!td->o.experimental_verify) {
695 io_u = __get_io_u(td);
699 if (get_next_verify(td, io_u)) {
704 if (td_io_prep(td, io_u)) {
709 if (ddir_rw_sum(td->bytes_done) + td->o.rw_min_bs > verify_bytes)
712 while ((io_u = get_io_u(td)) != NULL) {
713 if (IS_ERR_OR_NULL(io_u)) {
720 * We are only interested in the places where
721 * we wrote or trimmed IOs. Turn those into
722 * reads for verification purposes.
724 if (io_u->ddir == DDIR_READ) {
726 * Pretend we issued it for rwmix
729 td->io_issues[DDIR_READ]++;
732 } else if (io_u->ddir == DDIR_TRIM) {
733 io_u->ddir = DDIR_READ;
734 io_u_set(td, io_u, IO_U_F_TRIMMED);
736 } else if (io_u->ddir == DDIR_WRITE) {
737 io_u->ddir = DDIR_READ;
749 if (verify_state_should_stop(td, io_u)) {
754 if (td->o.verify_async)
755 io_u->end_io = verify_io_u_async;
757 io_u->end_io = verify_io_u;
760 if (!td->o.disable_slat)
761 fio_gettime(&io_u->start_time, NULL);
763 ret = io_u_submit(td, io_u);
765 if (io_queue_event(td, io_u, &ret, ddir, NULL, 1, NULL))
769 * if we can queue more, do so. but check if there are
770 * completed io_u's first. Note that we can get BUSY even
771 * without IO queued, if the system is resource starved.
774 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
775 if (full || io_in_polling(td))
776 ret = wait_for_completions(td, NULL);
782 check_update_rusage(td);
785 min_events = td->cur_depth;
788 ret = io_u_queued_complete(td, min_events);
790 cleanup_pending_aio(td);
792 td_set_runstate(td, TD_RUNNING);
794 dprint(FD_VERIFY, "exiting loop\n");
797 static bool exceeds_number_ios(struct thread_data *td)
799 unsigned long long number_ios;
801 if (!td->o.number_ios)
804 number_ios = ddir_rw_sum(td->io_blocks);
805 number_ios += td->io_u_queued + td->io_u_in_flight;
807 return number_ios >= (td->o.number_ios * td->loops);
810 static bool io_bytes_exceeded(struct thread_data *td, uint64_t *this_bytes)
812 unsigned long long bytes, limit;
815 bytes = this_bytes[DDIR_READ] + this_bytes[DDIR_WRITE];
816 else if (td_write(td))
817 bytes = this_bytes[DDIR_WRITE];
818 else if (td_read(td))
819 bytes = this_bytes[DDIR_READ];
821 bytes = this_bytes[DDIR_TRIM];
824 limit = td->o.io_size;
829 return bytes >= limit || exceeds_number_ios(td);
832 static bool io_issue_bytes_exceeded(struct thread_data *td)
834 return io_bytes_exceeded(td, td->io_issue_bytes);
837 static bool io_complete_bytes_exceeded(struct thread_data *td)
839 return io_bytes_exceeded(td, td->this_io_bytes);
843 * used to calculate the next io time for rate control
846 static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
848 uint64_t bps = td->rate_bps[ddir];
850 assert(!(td->flags & TD_F_CHILD));
852 if (td->o.rate_process == RATE_PROCESS_POISSON) {
855 iops = bps / td->o.bs[ddir];
856 val = (int64_t) (1000000 / iops) *
857 -logf(__rand_0_1(&td->poisson_state[ddir]));
859 dprint(FD_RATE, "poisson rate iops=%llu, ddir=%d\n",
860 (unsigned long long) 1000000 / val,
863 td->last_usec[ddir] += val;
864 return td->last_usec[ddir];
866 uint64_t bytes = td->rate_io_issue_bytes[ddir];
867 uint64_t secs = bytes / bps;
868 uint64_t remainder = bytes % bps;
870 return remainder * 1000000 / bps + secs * 1000000;
876 static void handle_thinktime(struct thread_data *td, enum fio_ddir ddir)
878 unsigned long long b;
882 b = ddir_rw_sum(td->io_blocks);
883 if (b % td->o.thinktime_blocks)
889 if (td->o.thinktime_spin)
890 total = usec_spin(td->o.thinktime_spin);
892 left = td->o.thinktime - total;
894 total += usec_sleep(td, left);
897 * If we're ignoring thinktime for the rate, add the number of bytes
898 * we would have done while sleeping, minus one block to ensure we
899 * start issuing immediately after the sleep.
901 if (total && td->rate_bps[ddir] && td->o.rate_ign_think) {
902 uint64_t missed = (td->rate_bps[ddir] * total) / 1000000ULL;
903 uint64_t bs = td->o.min_bs[ddir];
904 uint64_t usperop = bs * 1000000ULL / td->rate_bps[ddir];
907 if (usperop <= total)
910 over = (usperop - total) / usperop * -bs;
912 td->rate_io_issue_bytes[ddir] += (missed - over);
917 * Main IO worker function. It retrieves io_u's to process and queues
918 * and reaps them, checking for rate and errors along the way.
920 * Returns number of bytes written and trimmed.
922 static void do_io(struct thread_data *td, uint64_t *bytes_done)
926 uint64_t total_bytes, bytes_issued = 0;
928 for (i = 0; i < DDIR_RWDIR_CNT; i++)
929 bytes_done[i] = td->bytes_done[i];
931 if (in_ramp_time(td))
932 td_set_runstate(td, TD_RAMP);
934 td_set_runstate(td, TD_RUNNING);
938 total_bytes = td->o.size;
940 * Allow random overwrite workloads to write up to io_size
941 * before starting verification phase as 'size' doesn't apply.
943 if (td_write(td) && td_random(td) && td->o.norandommap)
944 total_bytes = max(total_bytes, (uint64_t) td->o.io_size);
946 * If verify_backlog is enabled, we'll run the verify in this
947 * handler as well. For that case, we may need up to twice the
950 if (td->o.verify != VERIFY_NONE &&
951 (td_write(td) && td->o.verify_backlog))
952 total_bytes += td->o.size;
954 /* In trimwrite mode, each byte is trimmed and then written, so
955 * allow total_bytes to be twice as big */
956 if (td_trimwrite(td))
957 total_bytes += td->total_io_size;
959 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
960 (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) ||
962 struct timespec comp_time;
967 check_update_rusage(td);
969 if (td->terminate || td->done)
974 if (runtime_exceeded(td, &td->ts_cache)) {
975 __update_ts_cache(td);
976 if (runtime_exceeded(td, &td->ts_cache)) {
977 fio_mark_td_terminate(td);
982 if (flow_threshold_exceeded(td))
986 * Break if we exceeded the bytes. The exception is time
987 * based runs, but we still need to break out of the loop
988 * for those to run verification, if enabled.
990 if (bytes_issued >= total_bytes &&
991 (!td->o.time_based ||
992 (td->o.time_based && td->o.verify != VERIFY_NONE)))
996 if (IS_ERR_OR_NULL(io_u)) {
997 int err = PTR_ERR(io_u);
1001 if (err == -EBUSY) {
1005 if (td->o.latency_target)
1013 * Add verification end_io handler if:
1014 * - Asked to verify (!td_rw(td))
1015 * - Or the io_u is from our verify list (mixed write/ver)
1017 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
1018 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
1020 if (!td->o.verify_pattern_bytes) {
1021 io_u->rand_seed = __rand(&td->verify_state);
1022 if (sizeof(int) != sizeof(long *))
1023 io_u->rand_seed *= __rand(&td->verify_state);
1026 if (verify_state_should_stop(td, io_u)) {
1031 if (td->o.verify_async)
1032 io_u->end_io = verify_io_u_async;
1034 io_u->end_io = verify_io_u;
1035 td_set_runstate(td, TD_VERIFYING);
1036 } else if (in_ramp_time(td))
1037 td_set_runstate(td, TD_RAMP);
1039 td_set_runstate(td, TD_RUNNING);
1042 * Always log IO before it's issued, so we know the specific
1043 * order of it. The logged unit will track when the IO has
1046 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1048 td->o.verify != VERIFY_NONE &&
1049 !td->o.experimental_verify)
1050 log_io_piece(td, io_u);
1052 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1053 const unsigned long blen = io_u->xfer_buflen;
1054 const enum fio_ddir ddir = acct_ddir(io_u);
1059 workqueue_enqueue(&td->io_wq, &io_u->work);
1062 if (ddir_rw(ddir)) {
1063 td->io_issues[ddir]++;
1064 td->io_issue_bytes[ddir] += blen;
1065 td->rate_io_issue_bytes[ddir] += blen;
1068 if (should_check_rate(td))
1069 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
1072 ret = io_u_submit(td, io_u);
1074 if (should_check_rate(td))
1075 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
1077 if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
1081 * See if we need to complete some commands. Note that
1082 * we can get BUSY even without IO queued, if the
1083 * system is resource starved.
1086 full = queue_full(td) ||
1087 (ret == FIO_Q_BUSY && td->cur_depth);
1088 if (full || io_in_polling(td))
1089 ret = wait_for_completions(td, &comp_time);
1093 if (!ddir_rw_sum(td->bytes_done) &&
1094 !td_ioengine_flagged(td, FIO_NOIO))
1097 if (!in_ramp_time(td) && should_check_rate(td)) {
1098 if (check_min_rate(td, &comp_time)) {
1099 if (exitall_on_terminate || td->o.exitall_error)
1100 fio_terminate_threads(td->groupid);
1101 td_verror(td, EIO, "check_min_rate");
1105 if (!in_ramp_time(td) && td->o.latency_target)
1106 lat_target_check(td);
1108 if (ddir_rw(ddir) && td->o.thinktime)
1109 handle_thinktime(td, ddir);
1112 check_update_rusage(td);
1114 if (td->trim_entries)
1115 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
1117 if (td->o.fill_device && td->error == ENOSPC) {
1119 fio_mark_td_terminate(td);
1124 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1125 workqueue_flush(&td->io_wq);
1131 ret = io_u_queued_complete(td, i);
1132 if (td->o.fill_device && td->error == ENOSPC)
1136 if (should_fsync(td) && td->o.end_fsync) {
1137 td_set_runstate(td, TD_FSYNCING);
1139 for_each_file(td, f, i) {
1140 if (!fio_file_fsync(td, f))
1143 log_err("fio: end_fsync failed for file %s\n",
1148 cleanup_pending_aio(td);
1151 * stop job if we failed doing any IO
1153 if (!ddir_rw_sum(td->this_io_bytes))
1156 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1157 bytes_done[i] = td->bytes_done[i] - bytes_done[i];
1160 static void free_file_completion_logging(struct thread_data *td)
1165 for_each_file(td, f, i) {
1166 if (!f->last_write_comp)
1168 sfree(f->last_write_comp);
1172 static int init_file_completion_logging(struct thread_data *td,
1178 if (td->o.verify == VERIFY_NONE || !td->o.verify_state_save)
1181 for_each_file(td, f, i) {
1182 f->last_write_comp = scalloc(depth, sizeof(uint64_t));
1183 if (!f->last_write_comp)
1190 free_file_completion_logging(td);
1191 log_err("fio: failed to alloc write comp data\n");
1195 static void cleanup_io_u(struct thread_data *td)
1199 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
1201 if (td->io_ops->io_u_free)
1202 td->io_ops->io_u_free(td, io_u);
1204 fio_memfree(io_u, sizeof(*io_u));
1209 io_u_rexit(&td->io_u_requeues);
1210 io_u_qexit(&td->io_u_freelist);
1211 io_u_qexit(&td->io_u_all);
1213 free_file_completion_logging(td);
1216 static int init_io_u(struct thread_data *td)
1219 unsigned int max_bs, min_write;
1220 int cl_align, i, max_units;
1221 int data_xfer = 1, err;
1224 max_units = td->o.iodepth;
1225 max_bs = td_max_bs(td);
1226 min_write = td->o.min_bs[DDIR_WRITE];
1227 td->orig_buffer_size = (unsigned long long) max_bs
1228 * (unsigned long long) max_units;
1230 if (td_ioengine_flagged(td, FIO_NOIO) || !(td_read(td) || td_write(td)))
1234 err += !io_u_rinit(&td->io_u_requeues, td->o.iodepth);
1235 err += !io_u_qinit(&td->io_u_freelist, td->o.iodepth);
1236 err += !io_u_qinit(&td->io_u_all, td->o.iodepth);
1239 log_err("fio: failed setting up IO queues\n");
1244 * if we may later need to do address alignment, then add any
1245 * possible adjustment here so that we don't cause a buffer
1246 * overflow later. this adjustment may be too much if we get
1247 * lucky and the allocator gives us an aligned address.
1249 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1250 td_ioengine_flagged(td, FIO_RAWIO))
1251 td->orig_buffer_size += page_mask + td->o.mem_align;
1253 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1256 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1257 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1260 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1261 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1265 if (data_xfer && allocate_io_mem(td))
1268 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1269 td_ioengine_flagged(td, FIO_RAWIO))
1270 p = PTR_ALIGN(td->orig_buffer, page_mask) + td->o.mem_align;
1272 p = td->orig_buffer;
1274 cl_align = os_cache_line_size();
1276 for (i = 0; i < max_units; i++) {
1282 ptr = fio_memalign(cl_align, sizeof(*io_u));
1284 log_err("fio: unable to allocate aligned memory\n");
1289 memset(io_u, 0, sizeof(*io_u));
1290 INIT_FLIST_HEAD(&io_u->verify_list);
1291 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1295 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1298 io_u_fill_buffer(td, io_u, min_write, max_bs);
1299 if (td_write(td) && td->o.verify_pattern_bytes) {
1301 * Fill the buffer with the pattern if we are
1302 * going to be doing writes.
1304 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1309 io_u->flags = IO_U_F_FREE;
1310 io_u_qpush(&td->io_u_freelist, io_u);
1313 * io_u never leaves this stack, used for iteration of all
1316 io_u_qpush(&td->io_u_all, io_u);
1318 if (td->io_ops->io_u_init) {
1319 int ret = td->io_ops->io_u_init(td, io_u);
1322 log_err("fio: failed to init engine data: %d\n", ret);
1330 if (init_file_completion_logging(td, max_units))
1337 * This function is Linux specific.
1338 * FIO_HAVE_IOSCHED_SWITCH enabled currently means it's Linux.
1340 static int switch_ioscheduler(struct thread_data *td)
1342 #ifdef FIO_HAVE_IOSCHED_SWITCH
1343 char tmp[256], tmp2[128];
1347 if (td_ioengine_flagged(td, FIO_DISKLESSIO))
1350 assert(td->files && td->files[0]);
1351 sprintf(tmp, "%s/queue/scheduler", td->files[0]->du->sysfs_root);
1353 f = fopen(tmp, "r+");
1355 if (errno == ENOENT) {
1356 log_err("fio: os or kernel doesn't support IO scheduler"
1360 td_verror(td, errno, "fopen iosched");
1367 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1368 if (ferror(f) || ret != 1) {
1369 td_verror(td, errno, "fwrite");
1377 * Read back and check that the selected scheduler is now the default.
1379 memset(tmp, 0, sizeof(tmp));
1380 ret = fread(tmp, sizeof(tmp), 1, f);
1381 if (ferror(f) || ret < 0) {
1382 td_verror(td, errno, "fread");
1387 * either a list of io schedulers or "none\n" is expected.
1389 tmp[strlen(tmp) - 1] = '\0';
1392 * Write to "none" entry doesn't fail, so check the result here.
1394 if (!strcmp(tmp, "none")) {
1395 log_err("fio: io scheduler is not tunable\n");
1400 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1401 if (!strstr(tmp, tmp2)) {
1402 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1403 td_verror(td, EINVAL, "iosched_switch");
1415 static bool keep_running(struct thread_data *td)
1417 unsigned long long limit;
1423 if (td->o.time_based)
1429 if (exceeds_number_ios(td))
1433 limit = td->o.io_size;
1437 if (limit != -1ULL && ddir_rw_sum(td->io_bytes) < limit) {
1441 * If the difference is less than the maximum IO size, we
1444 diff = limit - ddir_rw_sum(td->io_bytes);
1445 if (diff < td_max_bs(td))
1448 if (fio_files_done(td) && !td->o.io_size)
1457 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1459 size_t newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1463 str = malloc(newlen);
1464 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1466 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1469 log_err("fio: exec of cmd <%s> failed\n", str);
1476 * Dry run to compute correct state of numberio for verification.
1478 static uint64_t do_dry_run(struct thread_data *td)
1480 td_set_runstate(td, TD_RUNNING);
1482 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1483 (!flist_empty(&td->trim_list)) || !io_complete_bytes_exceeded(td)) {
1487 if (td->terminate || td->done)
1490 io_u = get_io_u(td);
1491 if (IS_ERR_OR_NULL(io_u))
1494 io_u_set(td, io_u, IO_U_F_FLIGHT);
1497 if (ddir_rw(acct_ddir(io_u)))
1498 td->io_issues[acct_ddir(io_u)]++;
1499 if (ddir_rw(io_u->ddir)) {
1500 io_u_mark_depth(td, 1);
1501 td->ts.total_io_u[io_u->ddir]++;
1504 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1506 td->o.verify != VERIFY_NONE &&
1507 !td->o.experimental_verify)
1508 log_io_piece(td, io_u);
1510 ret = io_u_sync_complete(td, io_u);
1514 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1518 struct thread_data *td;
1519 struct sk_out *sk_out;
1523 * Entry point for the thread based jobs. The process based jobs end up
1524 * here as well, after a little setup.
1526 static void *thread_main(void *data)
1528 struct fork_data *fd = data;
1529 unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
1530 struct thread_data *td = fd->td;
1531 struct thread_options *o = &td->o;
1532 struct sk_out *sk_out = fd->sk_out;
1533 uint64_t bytes_done[DDIR_RWDIR_CNT];
1534 int deadlock_loop_cnt;
1535 bool clear_state, did_some_io;
1538 sk_out_assign(sk_out);
1541 if (!o->use_thread) {
1547 fio_local_clock_init(o->use_thread);
1549 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1552 fio_server_send_start(td);
1554 INIT_FLIST_HEAD(&td->io_log_list);
1555 INIT_FLIST_HEAD(&td->io_hist_list);
1556 INIT_FLIST_HEAD(&td->verify_list);
1557 INIT_FLIST_HEAD(&td->trim_list);
1558 INIT_FLIST_HEAD(&td->next_rand_list);
1559 td->io_hist_tree = RB_ROOT;
1561 ret = mutex_cond_init_pshared(&td->io_u_lock, &td->free_cond);
1563 td_verror(td, ret, "mutex_cond_init_pshared");
1566 ret = cond_init_pshared(&td->verify_cond);
1568 td_verror(td, ret, "mutex_cond_pshared");
1572 td_set_runstate(td, TD_INITIALIZED);
1573 dprint(FD_MUTEX, "up startup_sem\n");
1574 fio_sem_up(startup_sem);
1575 dprint(FD_MUTEX, "wait on td->sem\n");
1576 fio_sem_down(td->sem);
1577 dprint(FD_MUTEX, "done waiting on td->sem\n");
1580 * A new gid requires privilege, so we need to do this before setting
1583 if (o->gid != -1U && setgid(o->gid)) {
1584 td_verror(td, errno, "setgid");
1587 if (o->uid != -1U && setuid(o->uid)) {
1588 td_verror(td, errno, "setuid");
1593 * Do this early, we don't want the compress threads to be limited
1594 * to the same CPUs as the IO workers. So do this before we set
1595 * any potential CPU affinity
1597 if (iolog_compress_init(td, sk_out))
1601 * If we have a gettimeofday() thread, make sure we exclude that
1602 * thread from this job
1605 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1608 * Set affinity first, in case it has an impact on the memory
1611 if (fio_option_is_set(o, cpumask)) {
1612 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1613 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1615 log_err("fio: no CPUs set\n");
1616 log_err("fio: Try increasing number of available CPUs\n");
1617 td_verror(td, EINVAL, "cpus_split");
1621 ret = fio_setaffinity(td->pid, o->cpumask);
1623 td_verror(td, errno, "cpu_set_affinity");
1628 #ifdef CONFIG_LIBNUMA
1629 /* numa node setup */
1630 if (fio_option_is_set(o, numa_cpunodes) ||
1631 fio_option_is_set(o, numa_memnodes)) {
1632 struct bitmask *mask;
1634 if (numa_available() < 0) {
1635 td_verror(td, errno, "Does not support NUMA API\n");
1639 if (fio_option_is_set(o, numa_cpunodes)) {
1640 mask = numa_parse_nodestring(o->numa_cpunodes);
1641 ret = numa_run_on_node_mask(mask);
1642 numa_free_nodemask(mask);
1644 td_verror(td, errno, \
1645 "numa_run_on_node_mask failed\n");
1650 if (fio_option_is_set(o, numa_memnodes)) {
1652 if (o->numa_memnodes)
1653 mask = numa_parse_nodestring(o->numa_memnodes);
1655 switch (o->numa_mem_mode) {
1656 case MPOL_INTERLEAVE:
1657 numa_set_interleave_mask(mask);
1660 numa_set_membind(mask);
1663 numa_set_localalloc();
1665 case MPOL_PREFERRED:
1666 numa_set_preferred(o->numa_mem_prefer_node);
1674 numa_free_nodemask(mask);
1680 if (fio_pin_memory(td))
1684 * May alter parameters that init_io_u() will use, so we need to
1693 if (o->verify_async && verify_async_init(td))
1696 if (fio_option_is_set(o, ioprio) ||
1697 fio_option_is_set(o, ioprio_class)) {
1698 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1700 td_verror(td, errno, "ioprio_set");
1705 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1709 if (nice(o->nice) == -1 && errno != 0) {
1710 td_verror(td, errno, "nice");
1714 if (o->ioscheduler && switch_ioscheduler(td))
1717 if (!o->create_serialize && setup_files(td))
1723 if (!init_random_map(td))
1726 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1729 if (o->pre_read && !pre_read_files(td))
1732 fio_verify_init(td);
1734 if (rate_submit_init(td, sk_out))
1737 set_epoch_time(td, o->log_unix_epoch);
1738 fio_getrusage(&td->ru_start);
1739 memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
1740 memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
1741 memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch));
1743 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1744 o->ratemin[DDIR_TRIM]) {
1745 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1746 sizeof(td->bw_sample_time));
1747 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1748 sizeof(td->bw_sample_time));
1749 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1750 sizeof(td->bw_sample_time));
1753 memset(bytes_done, 0, sizeof(bytes_done));
1754 clear_state = false;
1755 did_some_io = false;
1757 while (keep_running(td)) {
1758 uint64_t verify_bytes;
1760 fio_gettime(&td->start, NULL);
1761 memcpy(&td->ts_cache, &td->start, sizeof(td->start));
1764 clear_io_state(td, 0);
1766 if (o->unlink_each_loop && unlink_all_files(td))
1770 prune_io_piece_log(td);
1772 if (td->o.verify_only && td_write(td))
1773 verify_bytes = do_dry_run(td);
1775 do_io(td, bytes_done);
1777 if (!ddir_rw_sum(bytes_done)) {
1778 fio_mark_td_terminate(td);
1781 verify_bytes = bytes_done[DDIR_WRITE] +
1782 bytes_done[DDIR_TRIM];
1787 * If we took too long to shut down, the main thread could
1788 * already consider us reaped/exited. If that happens, break
1791 if (td->runstate >= TD_EXITED)
1797 * Make sure we've successfully updated the rusage stats
1798 * before waiting on the stat mutex. Otherwise we could have
1799 * the stat thread holding stat mutex and waiting for
1800 * the rusage_sem, which would never get upped because
1801 * this thread is waiting for the stat mutex.
1803 deadlock_loop_cnt = 0;
1805 check_update_rusage(td);
1806 if (!fio_sem_down_trylock(stat_sem))
1809 if (deadlock_loop_cnt++ > 5000) {
1810 log_err("fio seems to be stuck grabbing stat_sem, forcibly exiting\n");
1811 td->error = EDEADLK;
1816 if (td_read(td) && td->io_bytes[DDIR_READ])
1817 update_runtime(td, elapsed_us, DDIR_READ);
1818 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1819 update_runtime(td, elapsed_us, DDIR_WRITE);
1820 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1821 update_runtime(td, elapsed_us, DDIR_TRIM);
1822 fio_gettime(&td->start, NULL);
1823 fio_sem_up(stat_sem);
1825 if (td->error || td->terminate)
1828 if (!o->do_verify ||
1829 o->verify == VERIFY_NONE ||
1830 td_ioengine_flagged(td, FIO_UNIDIR))
1833 if (ddir_rw_sum(bytes_done))
1836 clear_io_state(td, 0);
1838 fio_gettime(&td->start, NULL);
1840 do_verify(td, verify_bytes);
1843 * See comment further up for why this is done here.
1845 check_update_rusage(td);
1847 fio_sem_down(stat_sem);
1848 update_runtime(td, elapsed_us, DDIR_READ);
1849 fio_gettime(&td->start, NULL);
1850 fio_sem_up(stat_sem);
1852 if (td->error || td->terminate)
1857 * If td ended up with no I/O when it should have had,
1858 * then something went wrong unless FIO_NOIO or FIO_DISKLESSIO.
1859 * (Are we not missing other flags that can be ignored ?)
1861 if ((td->o.size || td->o.io_size) && !ddir_rw_sum(bytes_done) &&
1862 !did_some_io && !td->o.create_only &&
1863 !(td_ioengine_flagged(td, FIO_NOIO) ||
1864 td_ioengine_flagged(td, FIO_DISKLESSIO)))
1865 log_err("%s: No I/O performed by %s, "
1866 "perhaps try --debug=io option for details?\n",
1867 td->o.name, td->io_ops->name);
1869 td_set_runstate(td, TD_FINISHING);
1871 update_rusage_stat(td);
1872 td->ts.total_run_time = mtime_since_now(&td->epoch);
1873 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1874 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1875 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1877 if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
1878 (td->o.verify != VERIFY_NONE && td_write(td)))
1879 verify_save_state(td->thread_number);
1881 fio_unpin_memory(td);
1883 td_writeout_logs(td, true);
1885 iolog_compress_exit(td);
1886 rate_submit_exit(td);
1888 if (o->exec_postrun)
1889 exec_string(o, o->exec_postrun, (const char *)"postrun");
1891 if (exitall_on_terminate || (o->exitall_error && td->error))
1892 fio_terminate_threads(td->groupid);
1896 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1899 if (o->verify_async)
1900 verify_async_exit(td);
1902 close_and_free_files(td);
1905 cgroup_shutdown(td, &cgroup_mnt);
1906 verify_free_state(td);
1908 if (td->zone_state_index) {
1911 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1912 free(td->zone_state_index[i]);
1913 free(td->zone_state_index);
1914 td->zone_state_index = NULL;
1917 if (fio_option_is_set(o, cpumask)) {
1918 ret = fio_cpuset_exit(&o->cpumask);
1920 td_verror(td, ret, "fio_cpuset_exit");
1924 * do this very late, it will log file closing as well
1926 if (o->write_iolog_file)
1927 write_iolog_close(td);
1929 td_set_runstate(td, TD_EXITED);
1932 * Do this last after setting our runstate to exited, so we
1933 * know that the stat thread is signaled.
1935 check_update_rusage(td);
1938 return (void *) (uintptr_t) td->error;
1942 * Run over the job map and reap the threads that have exited, if any.
1944 static void reap_threads(unsigned int *nr_running, uint64_t *t_rate,
1947 struct thread_data *td;
1948 unsigned int cputhreads, realthreads, pending;
1952 * reap exited threads (TD_EXITED -> TD_REAPED)
1954 realthreads = pending = cputhreads = 0;
1955 for_each_td(td, i) {
1958 if (!strcmp(td->o.ioengine, "cpuio"))
1967 if (td->runstate == TD_REAPED)
1969 if (td->o.use_thread) {
1970 if (td->runstate == TD_EXITED) {
1971 td_set_runstate(td, TD_REAPED);
1978 if (td->runstate == TD_EXITED)
1982 * check if someone quit or got killed in an unusual way
1984 ret = waitpid(td->pid, &status, flags);
1986 if (errno == ECHILD) {
1987 log_err("fio: pid=%d disappeared %d\n",
1988 (int) td->pid, td->runstate);
1990 td_set_runstate(td, TD_REAPED);
1994 } else if (ret == td->pid) {
1995 if (WIFSIGNALED(status)) {
1996 int sig = WTERMSIG(status);
1998 if (sig != SIGTERM && sig != SIGUSR2)
1999 log_err("fio: pid=%d, got signal=%d\n",
2000 (int) td->pid, sig);
2002 td_set_runstate(td, TD_REAPED);
2005 if (WIFEXITED(status)) {
2006 if (WEXITSTATUS(status) && !td->error)
2007 td->error = WEXITSTATUS(status);
2009 td_set_runstate(td, TD_REAPED);
2015 * If the job is stuck, do a forceful timeout of it and
2018 if (td->terminate &&
2019 td->runstate < TD_FSYNCING &&
2020 time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) {
2021 log_err("fio: job '%s' (state=%d) hasn't exited in "
2022 "%lu seconds, it appears to be stuck. Doing "
2023 "forceful exit of this job.\n",
2024 td->o.name, td->runstate,
2025 (unsigned long) time_since_now(&td->terminate_time));
2026 td_set_runstate(td, TD_REAPED);
2031 * thread is not dead, continue
2037 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
2038 (*t_rate) -= ddir_rw_sum(td->o.rate);
2045 done_secs += mtime_since_now(&td->epoch) / 1000;
2046 profile_td_exit(td);
2049 if (*nr_running == cputhreads && !pending && realthreads)
2050 fio_terminate_threads(TERMINATE_ALL);
2053 static bool __check_trigger_file(void)
2060 if (stat(trigger_file, &sb))
2063 if (unlink(trigger_file) < 0)
2064 log_err("fio: failed to unlink %s: %s\n", trigger_file,
2070 static bool trigger_timedout(void)
2072 if (trigger_timeout)
2073 if (time_since_genesis() >= trigger_timeout) {
2074 trigger_timeout = 0;
2081 void exec_trigger(const char *cmd)
2085 if (!cmd || cmd[0] == '\0')
2090 log_err("fio: failed executing %s trigger\n", cmd);
2093 void check_trigger_file(void)
2095 if (__check_trigger_file() || trigger_timedout()) {
2097 fio_clients_send_trigger(trigger_remote_cmd);
2099 verify_save_state(IO_LIST_ALL);
2100 fio_terminate_threads(TERMINATE_ALL);
2101 exec_trigger(trigger_cmd);
2106 static int fio_verify_load_state(struct thread_data *td)
2110 if (!td->o.verify_state)
2116 ret = fio_server_get_verify_state(td->o.name,
2117 td->thread_number - 1, &data);
2119 verify_assign_state(td, data);
2121 ret = verify_load_state(td, "local");
2126 static void do_usleep(unsigned int usecs)
2128 check_for_running_stats();
2129 check_trigger_file();
2133 static bool check_mount_writes(struct thread_data *td)
2138 if (!td_write(td) || td->o.allow_mounted_write)
2142 * If FIO_HAVE_CHARDEV_SIZE is defined, it's likely that chrdevs
2143 * are mkfs'd and mounted.
2145 for_each_file(td, f, i) {
2146 #ifdef FIO_HAVE_CHARDEV_SIZE
2147 if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR)
2149 if (f->filetype != FIO_TYPE_BLOCK)
2152 if (device_is_mounted(f->file_name))
2158 log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.\n", f->file_name);
2162 static bool waitee_running(struct thread_data *me)
2164 const char *waitee = me->o.wait_for;
2165 const char *self = me->o.name;
2166 struct thread_data *td;
2172 for_each_td(td, i) {
2173 if (!strcmp(td->o.name, self) || strcmp(td->o.name, waitee))
2176 if (td->runstate < TD_EXITED) {
2177 dprint(FD_PROCESS, "%s fenced by %s(%s)\n",
2179 runstate_to_name(td->runstate));
2184 dprint(FD_PROCESS, "%s: %s completed, can run\n", self, waitee);
2189 * Main function for kicking off and reaping jobs, as needed.
2191 static void run_threads(struct sk_out *sk_out)
2193 struct thread_data *td;
2194 unsigned int i, todo, nr_running, nr_started;
2195 uint64_t m_rate, t_rate;
2198 if (fio_gtod_offload && fio_start_gtod_thread())
2201 fio_idle_prof_init();
2205 nr_thread = nr_process = 0;
2206 for_each_td(td, i) {
2207 if (check_mount_writes(td))
2209 if (td->o.use_thread)
2215 if (output_format & FIO_OUTPUT_NORMAL) {
2216 log_info("Starting ");
2218 log_info("%d thread%s", nr_thread,
2219 nr_thread > 1 ? "s" : "");
2223 log_info("%d process%s", nr_process,
2224 nr_process > 1 ? "es" : "");
2230 todo = thread_number;
2233 m_rate = t_rate = 0;
2235 for_each_td(td, i) {
2236 print_status_init(td->thread_number - 1);
2238 if (!td->o.create_serialize)
2241 if (fio_verify_load_state(td))
2245 * do file setup here so it happens sequentially,
2246 * we don't want X number of threads getting their
2247 * client data interspersed on disk
2249 if (setup_files(td)) {
2253 log_err("fio: pid=%d, err=%d/%s\n",
2254 (int) td->pid, td->error, td->verror);
2255 td_set_runstate(td, TD_REAPED);
2262 * for sharing to work, each job must always open
2263 * its own files. so close them, if we opened them
2266 for_each_file(td, f, j) {
2267 if (fio_file_open(f))
2268 td_io_close_file(td, f);
2273 /* start idle threads before io threads start to run */
2274 fio_idle_prof_start();
2279 struct thread_data *map[REAL_MAX_JOBS];
2280 struct timespec this_start;
2281 int this_jobs = 0, left;
2282 struct fork_data *fd;
2285 * create threads (TD_NOT_CREATED -> TD_CREATED)
2287 for_each_td(td, i) {
2288 if (td->runstate != TD_NOT_CREATED)
2292 * never got a chance to start, killed by other
2293 * thread for some reason
2295 if (td->terminate) {
2300 if (td->o.start_delay) {
2301 spent = utime_since_genesis();
2303 if (td->o.start_delay > spent)
2307 if (td->o.stonewall && (nr_started || nr_running)) {
2308 dprint(FD_PROCESS, "%s: stonewall wait\n",
2313 if (waitee_running(td)) {
2314 dprint(FD_PROCESS, "%s: waiting for %s\n",
2315 td->o.name, td->o.wait_for);
2321 td->rusage_sem = fio_sem_init(FIO_SEM_LOCKED);
2322 td->update_rusage = 0;
2325 * Set state to created. Thread will transition
2326 * to TD_INITIALIZED when it's done setting up.
2328 td_set_runstate(td, TD_CREATED);
2329 map[this_jobs++] = td;
2332 fd = calloc(1, sizeof(*fd));
2334 fd->sk_out = sk_out;
2336 if (td->o.use_thread) {
2339 dprint(FD_PROCESS, "will pthread_create\n");
2340 ret = pthread_create(&td->thread, NULL,
2343 log_err("pthread_create: %s\n",
2350 ret = pthread_detach(td->thread);
2352 log_err("pthread_detach: %s",
2356 dprint(FD_PROCESS, "will fork\n");
2361 ret = (int)(uintptr_t)thread_main(fd);
2363 } else if (i == fio_debug_jobno)
2364 *fio_debug_jobp = pid;
2366 dprint(FD_MUTEX, "wait on startup_sem\n");
2367 if (fio_sem_down_timeout(startup_sem, 10000)) {
2368 log_err("fio: job startup hung? exiting.\n");
2369 fio_terminate_threads(TERMINATE_ALL);
2375 dprint(FD_MUTEX, "done waiting on startup_sem\n");
2379 * Wait for the started threads to transition to
2382 fio_gettime(&this_start, NULL);
2384 while (left && !fio_abort) {
2385 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
2390 for (i = 0; i < this_jobs; i++) {
2394 if (td->runstate == TD_INITIALIZED) {
2397 } else if (td->runstate >= TD_EXITED) {
2401 nr_running++; /* work-around... */
2407 log_err("fio: %d job%s failed to start\n", left,
2408 left > 1 ? "s" : "");
2409 for (i = 0; i < this_jobs; i++) {
2413 kill(td->pid, SIGTERM);
2419 * start created threads (TD_INITIALIZED -> TD_RUNNING).
2421 for_each_td(td, i) {
2422 if (td->runstate != TD_INITIALIZED)
2425 if (in_ramp_time(td))
2426 td_set_runstate(td, TD_RAMP);
2428 td_set_runstate(td, TD_RUNNING);
2431 m_rate += ddir_rw_sum(td->o.ratemin);
2432 t_rate += ddir_rw_sum(td->o.rate);
2434 fio_sem_up(td->sem);
2437 reap_threads(&nr_running, &t_rate, &m_rate);
2443 while (nr_running) {
2444 reap_threads(&nr_running, &t_rate, &m_rate);
2448 fio_idle_prof_stop();
2453 static void free_disk_util(void)
2455 disk_util_prune_entries();
2456 helper_thread_destroy();
2459 int fio_backend(struct sk_out *sk_out)
2461 struct thread_data *td;
2465 if (load_profile(exec_profile))
2468 exec_profile = NULL;
2474 struct log_params p = {
2475 .log_type = IO_LOG_TYPE_BW,
2478 setup_log(&agg_io_log[DDIR_READ], &p, "agg-read_bw.log");
2479 setup_log(&agg_io_log[DDIR_WRITE], &p, "agg-write_bw.log");
2480 setup_log(&agg_io_log[DDIR_TRIM], &p, "agg-trim_bw.log");
2483 startup_sem = fio_sem_init(FIO_SEM_LOCKED);
2484 if (startup_sem == NULL)
2489 helper_thread_create(startup_sem, sk_out);
2491 cgroup_list = smalloc(sizeof(*cgroup_list));
2492 INIT_FLIST_HEAD(cgroup_list);
2494 run_threads(sk_out);
2496 helper_thread_exit();
2501 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2502 struct io_log *log = agg_io_log[i];
2504 flush_log(log, false);
2510 for_each_td(td, i) {
2511 steadystate_free(td);
2512 fio_options_free(td);
2513 if (td->rusage_sem) {
2514 fio_sem_remove(td->rusage_sem);
2515 td->rusage_sem = NULL;
2517 fio_sem_remove(td->sem);
2522 cgroup_kill(cgroup_list);
2526 fio_sem_remove(startup_sem);