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.
40 #include "lib/memalign.h"
42 #include "lib/getrusage.h"
45 #include "workqueue.h"
46 #include "lib/mountcheck.h"
47 #include "rate-submit.h"
48 #include "helper_thread.h"
51 static struct fio_sem *startup_sem;
52 static struct flist_head *cgroup_list;
53 static struct cgroup_mnt *cgroup_mnt;
54 static int exit_value;
55 static volatile int fio_abort;
56 static unsigned int nr_process = 0;
57 static unsigned int nr_thread = 0;
59 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
62 unsigned int thread_number = 0;
63 unsigned int stat_number = 0;
66 unsigned long done_secs = 0;
68 #define JOB_START_TIMEOUT (5 * 1000)
70 static void sig_int(int sig)
74 fio_server_got_signal(sig);
76 log_info("\nfio: terminating on signal %d\n", sig);
81 fio_terminate_threads(TERMINATE_ALL);
85 void sig_show_status(int sig)
87 show_running_run_stats();
90 static void set_sig_handlers(void)
94 memset(&act, 0, sizeof(act));
95 act.sa_handler = sig_int;
96 act.sa_flags = SA_RESTART;
97 sigaction(SIGINT, &act, NULL);
99 memset(&act, 0, sizeof(act));
100 act.sa_handler = sig_int;
101 act.sa_flags = SA_RESTART;
102 sigaction(SIGTERM, &act, NULL);
104 /* Windows uses SIGBREAK as a quit signal from other applications */
106 memset(&act, 0, sizeof(act));
107 act.sa_handler = sig_int;
108 act.sa_flags = SA_RESTART;
109 sigaction(SIGBREAK, &act, NULL);
112 memset(&act, 0, sizeof(act));
113 act.sa_handler = sig_show_status;
114 act.sa_flags = SA_RESTART;
115 sigaction(SIGUSR1, &act, NULL);
118 memset(&act, 0, sizeof(act));
119 act.sa_handler = sig_int;
120 act.sa_flags = SA_RESTART;
121 sigaction(SIGPIPE, &act, NULL);
126 * Check if we are above the minimum rate given.
128 static bool __check_min_rate(struct thread_data *td, struct timespec *now,
131 unsigned long long bytes = 0;
132 unsigned long iops = 0;
135 unsigned int ratemin = 0;
136 unsigned int rate_iops = 0;
137 unsigned int rate_iops_min = 0;
139 assert(ddir_rw(ddir));
141 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
145 * allow a 2 second settle period in the beginning
147 if (mtime_since(&td->start, now) < 2000)
150 iops += td->this_io_blocks[ddir];
151 bytes += td->this_io_bytes[ddir];
152 ratemin += td->o.ratemin[ddir];
153 rate_iops += td->o.rate_iops[ddir];
154 rate_iops_min += td->o.rate_iops_min[ddir];
157 * if rate blocks is set, sample is running
159 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
160 spent = mtime_since(&td->lastrate[ddir], now);
161 if (spent < td->o.ratecycle)
164 if (td->o.rate[ddir] || td->o.ratemin[ddir]) {
166 * check bandwidth specified rate
168 if (bytes < td->rate_bytes[ddir]) {
169 log_err("%s: rate_min=%uB/s not met, only transferred %lluB\n",
170 td->o.name, ratemin, bytes);
174 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
178 if (rate < ratemin ||
179 bytes < td->rate_bytes[ddir]) {
180 log_err("%s: rate_min=%uB/s not met, got %luB/s\n",
181 td->o.name, ratemin, rate);
187 * checks iops specified rate
189 if (iops < rate_iops) {
190 log_err("%s: rate_iops_min=%u not met, only performed %lu IOs\n",
191 td->o.name, rate_iops, iops);
195 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
199 if (rate < rate_iops_min ||
200 iops < td->rate_blocks[ddir]) {
201 log_err("%s: rate_iops_min=%u not met, got %lu IOPS\n",
202 td->o.name, rate_iops_min, rate);
209 td->rate_bytes[ddir] = bytes;
210 td->rate_blocks[ddir] = iops;
211 memcpy(&td->lastrate[ddir], now, sizeof(*now));
215 static bool check_min_rate(struct thread_data *td, struct timespec *now)
219 if (td->bytes_done[DDIR_READ])
220 ret |= __check_min_rate(td, now, DDIR_READ);
221 if (td->bytes_done[DDIR_WRITE])
222 ret |= __check_min_rate(td, now, DDIR_WRITE);
223 if (td->bytes_done[DDIR_TRIM])
224 ret |= __check_min_rate(td, now, DDIR_TRIM);
230 * When job exits, we can cancel the in-flight IO if we are using async
231 * io. Attempt to do so.
233 static void cleanup_pending_aio(struct thread_data *td)
238 * get immediately available events, if any
240 r = io_u_queued_complete(td, 0);
245 * now cancel remaining active events
247 if (td->io_ops->cancel) {
251 io_u_qiter(&td->io_u_all, io_u, i) {
252 if (io_u->flags & IO_U_F_FLIGHT) {
253 r = td->io_ops->cancel(td, io_u);
261 r = io_u_queued_complete(td, td->cur_depth);
265 * Helper to handle the final sync of a file. Works just like the normal
266 * io path, just does everything sync.
268 static bool fio_io_sync(struct thread_data *td, struct fio_file *f)
270 struct io_u *io_u = __get_io_u(td);
271 enum fio_q_status ret;
276 io_u->ddir = DDIR_SYNC;
279 if (td_io_prep(td, io_u)) {
285 ret = td_io_queue(td, io_u);
289 if (io_u_queued_complete(td, 1) < 0)
292 case FIO_Q_COMPLETED:
294 td_verror(td, io_u->error, "td_io_queue");
298 if (io_u_sync_complete(td, io_u) < 0)
309 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
313 if (fio_file_open(f))
314 return fio_io_sync(td, f);
316 if (td_io_open_file(td, f))
319 ret = fio_io_sync(td, f);
320 td_io_close_file(td, f);
324 static inline void __update_ts_cache(struct thread_data *td)
326 fio_gettime(&td->ts_cache, NULL);
329 static inline void update_ts_cache(struct thread_data *td)
331 if ((++td->ts_cache_nr & td->ts_cache_mask) == td->ts_cache_mask)
332 __update_ts_cache(td);
335 static inline bool runtime_exceeded(struct thread_data *td, struct timespec *t)
337 if (in_ramp_time(td))
341 if (utime_since(&td->epoch, t) >= td->o.timeout)
348 * We need to update the runtime consistently in ms, but keep a running
349 * tally of the current elapsed time in microseconds for sub millisecond
352 static inline void update_runtime(struct thread_data *td,
353 unsigned long long *elapsed_us,
354 const enum fio_ddir ddir)
356 if (ddir == DDIR_WRITE && td_write(td) && td->o.verify_only)
359 td->ts.runtime[ddir] -= (elapsed_us[ddir] + 999) / 1000;
360 elapsed_us[ddir] += utime_since_now(&td->start);
361 td->ts.runtime[ddir] += (elapsed_us[ddir] + 999) / 1000;
364 static bool break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
369 if (ret < 0 || td->error) {
371 enum error_type_bit eb;
376 eb = td_error_type(ddir, err);
377 if (!(td->o.continue_on_error & (1 << eb)))
380 if (td_non_fatal_error(td, eb, err)) {
382 * Continue with the I/Os in case of
385 update_error_count(td, err);
389 } else if (td->o.fill_device && err == ENOSPC) {
391 * We expect to hit this error if
392 * fill_device option is set.
395 fio_mark_td_terminate(td);
399 * Stop the I/O in case of a fatal
402 update_error_count(td, err);
410 static void check_update_rusage(struct thread_data *td)
412 if (td->update_rusage) {
413 td->update_rusage = 0;
414 update_rusage_stat(td);
415 fio_sem_up(td->rusage_sem);
419 static int wait_for_completions(struct thread_data *td, struct timespec *time)
421 const int full = queue_full(td);
425 if (td->flags & TD_F_REGROW_LOGS)
426 return io_u_quiesce(td);
429 * if the queue is full, we MUST reap at least 1 event
431 min_evts = min(td->o.iodepth_batch_complete_min, td->cur_depth);
432 if ((full && !min_evts) || !td->o.iodepth_batch_complete_min)
435 if (time && __should_check_rate(td))
436 fio_gettime(time, NULL);
439 ret = io_u_queued_complete(td, min_evts);
442 } while (full && (td->cur_depth > td->o.iodepth_low));
447 int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
448 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
449 struct timespec *comp_time)
452 case FIO_Q_COMPLETED:
455 clear_io_u(td, io_u);
456 } else if (io_u->resid) {
457 long long bytes = io_u->xfer_buflen - io_u->resid;
458 struct fio_file *f = io_u->file;
461 *bytes_issued += bytes;
471 unlog_io_piece(td, io_u);
472 td_verror(td, EIO, "full resid");
477 io_u->xfer_buflen = io_u->resid;
478 io_u->xfer_buf += bytes;
479 io_u->offset += bytes;
481 if (ddir_rw(io_u->ddir))
482 td->ts.short_io_u[io_u->ddir]++;
484 if (io_u->offset == f->real_file_size)
487 requeue_io_u(td, &io_u);
490 if (comp_time && __should_check_rate(td))
491 fio_gettime(comp_time, NULL);
493 *ret = io_u_sync_complete(td, io_u);
498 if (td->flags & TD_F_REGROW_LOGS)
502 * when doing I/O (not when verifying),
503 * check for any errors that are to be ignored
511 * if the engine doesn't have a commit hook,
512 * the io_u is really queued. if it does have such
513 * a hook, it has to call io_u_queued() itself.
515 if (td->io_ops->commit == NULL)
516 io_u_queued(td, io_u);
518 *bytes_issued += io_u->xfer_buflen;
522 unlog_io_piece(td, io_u);
523 requeue_io_u(td, &io_u);
528 td_verror(td, -(*ret), "td_io_queue");
532 if (break_on_this_error(td, ddir, ret))
538 static inline bool io_in_polling(struct thread_data *td)
540 return !td->o.iodepth_batch_complete_min &&
541 !td->o.iodepth_batch_complete_max;
544 * Unlinks files from thread data fio_file structure
546 static int unlink_all_files(struct thread_data *td)
552 for_each_file(td, f, i) {
553 if (f->filetype != FIO_TYPE_FILE)
555 ret = td_io_unlink_file(td, f);
561 td_verror(td, ret, "unlink_all_files");
567 * Check if io_u will overlap an in-flight IO in the queue
569 static bool in_flight_overlap(struct io_u_queue *q, struct io_u *io_u)
572 struct io_u *check_io_u;
573 unsigned long long x1, x2, y1, y2;
577 x2 = io_u->offset + io_u->buflen;
579 io_u_qiter(q, check_io_u, i) {
580 if (check_io_u->flags & IO_U_F_FLIGHT) {
581 y1 = check_io_u->offset;
582 y2 = check_io_u->offset + check_io_u->buflen;
584 if (x1 < y2 && y1 < x2) {
586 dprint(FD_IO, "in-flight overlap: %llu/%llu, %llu/%llu\n",
588 y1, check_io_u->buflen);
597 static enum fio_q_status io_u_submit(struct thread_data *td, struct io_u *io_u)
600 * Check for overlap if the user asked us to, and we have
601 * at least one IO in flight besides this one.
603 if (td->o.serialize_overlap && td->cur_depth > 1 &&
604 in_flight_overlap(&td->io_u_all, io_u))
607 return td_io_queue(td, io_u);
611 * The main verify engine. Runs over the writes we previously submitted,
612 * reads the blocks back in, and checks the crc/md5 of the data.
614 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
621 dprint(FD_VERIFY, "starting loop\n");
624 * sync io first and invalidate cache, to make sure we really
627 for_each_file(td, f, i) {
628 if (!fio_file_open(f))
630 if (fio_io_sync(td, f))
632 if (file_invalidate_cache(td, f))
636 check_update_rusage(td);
642 * verify_state needs to be reset before verification
643 * proceeds so that expected random seeds match actual
644 * random seeds in headers. The main loop will reset
645 * all random number generators if randrepeat is set.
647 if (!td->o.rand_repeatable)
648 td_fill_verify_state_seed(td);
650 td_set_runstate(td, TD_VERIFYING);
653 while (!td->terminate) {
658 check_update_rusage(td);
660 if (runtime_exceeded(td, &td->ts_cache)) {
661 __update_ts_cache(td);
662 if (runtime_exceeded(td, &td->ts_cache)) {
663 fio_mark_td_terminate(td);
668 if (flow_threshold_exceeded(td))
671 if (!td->o.experimental_verify) {
672 io_u = __get_io_u(td);
676 if (get_next_verify(td, io_u)) {
681 if (td_io_prep(td, io_u)) {
686 if (ddir_rw_sum(td->bytes_done) + td->o.rw_min_bs > verify_bytes)
689 while ((io_u = get_io_u(td)) != NULL) {
690 if (IS_ERR_OR_NULL(io_u)) {
697 * We are only interested in the places where
698 * we wrote or trimmed IOs. Turn those into
699 * reads for verification purposes.
701 if (io_u->ddir == DDIR_READ) {
703 * Pretend we issued it for rwmix
706 td->io_issues[DDIR_READ]++;
709 } else if (io_u->ddir == DDIR_TRIM) {
710 io_u->ddir = DDIR_READ;
711 io_u_set(td, io_u, IO_U_F_TRIMMED);
713 } else if (io_u->ddir == DDIR_WRITE) {
714 io_u->ddir = DDIR_READ;
715 populate_verify_io_u(td, io_u);
727 if (verify_state_should_stop(td, io_u)) {
732 if (td->o.verify_async)
733 io_u->end_io = verify_io_u_async;
735 io_u->end_io = verify_io_u;
738 if (!td->o.disable_slat)
739 fio_gettime(&io_u->start_time, NULL);
741 ret = io_u_submit(td, io_u);
743 if (io_queue_event(td, io_u, &ret, ddir, NULL, 1, NULL))
747 * if we can queue more, do so. but check if there are
748 * completed io_u's first. Note that we can get BUSY even
749 * without IO queued, if the system is resource starved.
752 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
753 if (full || io_in_polling(td))
754 ret = wait_for_completions(td, NULL);
760 check_update_rusage(td);
763 min_events = td->cur_depth;
766 ret = io_u_queued_complete(td, min_events);
768 cleanup_pending_aio(td);
770 td_set_runstate(td, TD_RUNNING);
772 dprint(FD_VERIFY, "exiting loop\n");
775 static bool exceeds_number_ios(struct thread_data *td)
777 unsigned long long number_ios;
779 if (!td->o.number_ios)
782 number_ios = ddir_rw_sum(td->io_blocks);
783 number_ios += td->io_u_queued + td->io_u_in_flight;
785 return number_ios >= (td->o.number_ios * td->loops);
788 static bool io_bytes_exceeded(struct thread_data *td, uint64_t *this_bytes)
790 unsigned long long bytes, limit;
793 bytes = this_bytes[DDIR_READ] + this_bytes[DDIR_WRITE];
794 else if (td_write(td))
795 bytes = this_bytes[DDIR_WRITE];
796 else if (td_read(td))
797 bytes = this_bytes[DDIR_READ];
799 bytes = this_bytes[DDIR_TRIM];
802 limit = td->o.io_size;
807 return bytes >= limit || exceeds_number_ios(td);
810 static bool io_issue_bytes_exceeded(struct thread_data *td)
812 return io_bytes_exceeded(td, td->io_issue_bytes);
815 static bool io_complete_bytes_exceeded(struct thread_data *td)
817 return io_bytes_exceeded(td, td->this_io_bytes);
821 * used to calculate the next io time for rate control
824 static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
826 uint64_t bps = td->rate_bps[ddir];
828 assert(!(td->flags & TD_F_CHILD));
830 if (td->o.rate_process == RATE_PROCESS_POISSON) {
833 iops = bps / td->o.bs[ddir];
834 val = (int64_t) (1000000 / iops) *
835 -logf(__rand_0_1(&td->poisson_state[ddir]));
837 dprint(FD_RATE, "poisson rate iops=%llu, ddir=%d\n",
838 (unsigned long long) 1000000 / val,
841 td->last_usec[ddir] += val;
842 return td->last_usec[ddir];
844 uint64_t bytes = td->rate_io_issue_bytes[ddir];
845 uint64_t secs = bytes / bps;
846 uint64_t remainder = bytes % bps;
848 return remainder * 1000000 / bps + secs * 1000000;
854 static void handle_thinktime(struct thread_data *td, enum fio_ddir ddir)
856 unsigned long long b;
860 b = ddir_rw_sum(td->io_blocks);
861 if (b % td->o.thinktime_blocks)
867 if (td->o.thinktime_spin)
868 total = usec_spin(td->o.thinktime_spin);
870 left = td->o.thinktime - total;
872 total += usec_sleep(td, left);
875 * If we're ignoring thinktime for the rate, add the number of bytes
876 * we would have done while sleeping, minus one block to ensure we
877 * start issuing immediately after the sleep.
879 if (total && td->rate_bps[ddir] && td->o.rate_ign_think) {
880 uint64_t missed = (td->rate_bps[ddir] * total) / 1000000ULL;
881 uint64_t bs = td->o.min_bs[ddir];
882 uint64_t usperop = bs * 1000000ULL / td->rate_bps[ddir];
885 if (usperop <= total)
888 over = (usperop - total) / usperop * -bs;
890 td->rate_io_issue_bytes[ddir] += (missed - over);
891 /* adjust for rate_process=poisson */
892 td->last_usec[ddir] += total;
897 * Main IO worker function. It retrieves io_u's to process and queues
898 * and reaps them, checking for rate and errors along the way.
900 * Returns number of bytes written and trimmed.
902 static void do_io(struct thread_data *td, uint64_t *bytes_done)
906 uint64_t total_bytes, bytes_issued = 0;
908 for (i = 0; i < DDIR_RWDIR_CNT; i++)
909 bytes_done[i] = td->bytes_done[i];
911 if (in_ramp_time(td))
912 td_set_runstate(td, TD_RAMP);
914 td_set_runstate(td, TD_RUNNING);
918 total_bytes = td->o.size;
920 * Allow random overwrite workloads to write up to io_size
921 * before starting verification phase as 'size' doesn't apply.
923 if (td_write(td) && td_random(td) && td->o.norandommap)
924 total_bytes = max(total_bytes, (uint64_t) td->o.io_size);
926 * If verify_backlog is enabled, we'll run the verify in this
927 * handler as well. For that case, we may need up to twice the
930 if (td->o.verify != VERIFY_NONE &&
931 (td_write(td) && td->o.verify_backlog))
932 total_bytes += td->o.size;
934 /* In trimwrite mode, each byte is trimmed and then written, so
935 * allow total_bytes to be twice as big */
936 if (td_trimwrite(td))
937 total_bytes += td->total_io_size;
939 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
940 (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) ||
942 struct timespec comp_time;
947 check_update_rusage(td);
949 if (td->terminate || td->done)
954 if (runtime_exceeded(td, &td->ts_cache)) {
955 __update_ts_cache(td);
956 if (runtime_exceeded(td, &td->ts_cache)) {
957 fio_mark_td_terminate(td);
962 if (flow_threshold_exceeded(td))
966 * Break if we exceeded the bytes. The exception is time
967 * based runs, but we still need to break out of the loop
968 * for those to run verification, if enabled.
970 if (bytes_issued >= total_bytes &&
971 (!td->o.time_based ||
972 (td->o.time_based && td->o.verify != VERIFY_NONE)))
976 if (IS_ERR_OR_NULL(io_u)) {
977 int err = PTR_ERR(io_u);
985 if (td->o.latency_target)
990 if (io_u->ddir == DDIR_WRITE && td->flags & TD_F_DO_VERIFY)
991 populate_verify_io_u(td, io_u);
996 * Add verification end_io handler if:
997 * - Asked to verify (!td_rw(td))
998 * - Or the io_u is from our verify list (mixed write/ver)
1000 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
1001 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
1003 if (!td->o.verify_pattern_bytes) {
1004 io_u->rand_seed = __rand(&td->verify_state);
1005 if (sizeof(int) != sizeof(long *))
1006 io_u->rand_seed *= __rand(&td->verify_state);
1009 if (verify_state_should_stop(td, io_u)) {
1014 if (td->o.verify_async)
1015 io_u->end_io = verify_io_u_async;
1017 io_u->end_io = verify_io_u;
1018 td_set_runstate(td, TD_VERIFYING);
1019 } else if (in_ramp_time(td))
1020 td_set_runstate(td, TD_RAMP);
1022 td_set_runstate(td, TD_RUNNING);
1025 * Always log IO before it's issued, so we know the specific
1026 * order of it. The logged unit will track when the IO has
1029 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1031 td->o.verify != VERIFY_NONE &&
1032 !td->o.experimental_verify)
1033 log_io_piece(td, io_u);
1035 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1036 const unsigned long long blen = io_u->xfer_buflen;
1037 const enum fio_ddir __ddir = acct_ddir(io_u);
1042 workqueue_enqueue(&td->io_wq, &io_u->work);
1045 if (ddir_rw(__ddir)) {
1046 td->io_issues[__ddir]++;
1047 td->io_issue_bytes[__ddir] += blen;
1048 td->rate_io_issue_bytes[__ddir] += blen;
1051 if (should_check_rate(td))
1052 td->rate_next_io_time[__ddir] = usec_for_io(td, __ddir);
1055 ret = io_u_submit(td, io_u);
1057 if (should_check_rate(td))
1058 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
1060 if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
1064 * See if we need to complete some commands. Note that
1065 * we can get BUSY even without IO queued, if the
1066 * system is resource starved.
1069 full = queue_full(td) ||
1070 (ret == FIO_Q_BUSY && td->cur_depth);
1071 if (full || io_in_polling(td))
1072 ret = wait_for_completions(td, &comp_time);
1076 if (!ddir_rw_sum(td->bytes_done) &&
1077 !td_ioengine_flagged(td, FIO_NOIO))
1080 if (!in_ramp_time(td) && should_check_rate(td)) {
1081 if (check_min_rate(td, &comp_time)) {
1082 if (exitall_on_terminate || td->o.exitall_error)
1083 fio_terminate_threads(td->groupid);
1084 td_verror(td, EIO, "check_min_rate");
1088 if (!in_ramp_time(td) && td->o.latency_target)
1089 lat_target_check(td);
1091 if (ddir_rw(ddir) && td->o.thinktime)
1092 handle_thinktime(td, ddir);
1095 check_update_rusage(td);
1097 if (td->trim_entries)
1098 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
1100 if (td->o.fill_device && td->error == ENOSPC) {
1102 fio_mark_td_terminate(td);
1107 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1108 workqueue_flush(&td->io_wq);
1114 ret = io_u_queued_complete(td, i);
1115 if (td->o.fill_device && td->error == ENOSPC)
1119 if (should_fsync(td) && td->o.end_fsync) {
1120 td_set_runstate(td, TD_FSYNCING);
1122 for_each_file(td, f, i) {
1123 if (!fio_file_fsync(td, f))
1126 log_err("fio: end_fsync failed for file %s\n",
1131 cleanup_pending_aio(td);
1134 * stop job if we failed doing any IO
1136 if (!ddir_rw_sum(td->this_io_bytes))
1139 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1140 bytes_done[i] = td->bytes_done[i] - bytes_done[i];
1143 static void free_file_completion_logging(struct thread_data *td)
1148 for_each_file(td, f, i) {
1149 if (!f->last_write_comp)
1151 sfree(f->last_write_comp);
1155 static int init_file_completion_logging(struct thread_data *td,
1161 if (td->o.verify == VERIFY_NONE || !td->o.verify_state_save)
1164 for_each_file(td, f, i) {
1165 f->last_write_comp = scalloc(depth, sizeof(uint64_t));
1166 if (!f->last_write_comp)
1173 free_file_completion_logging(td);
1174 log_err("fio: failed to alloc write comp data\n");
1178 static void cleanup_io_u(struct thread_data *td)
1182 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
1184 if (td->io_ops->io_u_free)
1185 td->io_ops->io_u_free(td, io_u);
1187 fio_memfree(io_u, sizeof(*io_u));
1192 io_u_rexit(&td->io_u_requeues);
1193 io_u_qexit(&td->io_u_freelist);
1194 io_u_qexit(&td->io_u_all);
1196 free_file_completion_logging(td);
1199 static int init_io_u(struct thread_data *td)
1202 unsigned long long max_bs, min_write;
1203 int cl_align, i, max_units;
1204 int data_xfer = 1, err;
1207 max_units = td->o.iodepth;
1208 max_bs = td_max_bs(td);
1209 min_write = td->o.min_bs[DDIR_WRITE];
1210 td->orig_buffer_size = (unsigned long long) max_bs
1211 * (unsigned long long) max_units;
1213 if (td_ioengine_flagged(td, FIO_NOIO) || !(td_read(td) || td_write(td)))
1217 err += !io_u_rinit(&td->io_u_requeues, td->o.iodepth);
1218 err += !io_u_qinit(&td->io_u_freelist, td->o.iodepth);
1219 err += !io_u_qinit(&td->io_u_all, td->o.iodepth);
1222 log_err("fio: failed setting up IO queues\n");
1227 * if we may later need to do address alignment, then add any
1228 * possible adjustment here so that we don't cause a buffer
1229 * overflow later. this adjustment may be too much if we get
1230 * lucky and the allocator gives us an aligned address.
1232 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1233 td_ioengine_flagged(td, FIO_RAWIO))
1234 td->orig_buffer_size += page_mask + td->o.mem_align;
1236 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1237 unsigned long long bs;
1239 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1240 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1243 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1244 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1248 if (data_xfer && allocate_io_mem(td))
1251 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1252 td_ioengine_flagged(td, FIO_RAWIO))
1253 p = PTR_ALIGN(td->orig_buffer, page_mask) + td->o.mem_align;
1255 p = td->orig_buffer;
1257 cl_align = os_cache_line_size();
1259 for (i = 0; i < max_units; i++) {
1265 ptr = fio_memalign(cl_align, sizeof(*io_u));
1267 log_err("fio: unable to allocate aligned memory\n");
1272 memset(io_u, 0, sizeof(*io_u));
1273 INIT_FLIST_HEAD(&io_u->verify_list);
1274 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1278 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1281 io_u_fill_buffer(td, io_u, min_write, max_bs);
1282 if (td_write(td) && td->o.verify_pattern_bytes) {
1284 * Fill the buffer with the pattern if we are
1285 * going to be doing writes.
1287 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1292 io_u->flags = IO_U_F_FREE;
1293 io_u_qpush(&td->io_u_freelist, io_u);
1296 * io_u never leaves this stack, used for iteration of all
1299 io_u_qpush(&td->io_u_all, io_u);
1301 if (td->io_ops->io_u_init) {
1302 int ret = td->io_ops->io_u_init(td, io_u);
1305 log_err("fio: failed to init engine data: %d\n", ret);
1313 if (init_file_completion_logging(td, max_units))
1320 * This function is Linux specific.
1321 * FIO_HAVE_IOSCHED_SWITCH enabled currently means it's Linux.
1323 static int switch_ioscheduler(struct thread_data *td)
1325 #ifdef FIO_HAVE_IOSCHED_SWITCH
1326 char tmp[256], tmp2[128], *p;
1330 if (td_ioengine_flagged(td, FIO_DISKLESSIO))
1333 assert(td->files && td->files[0]);
1334 sprintf(tmp, "%s/queue/scheduler", td->files[0]->du->sysfs_root);
1336 f = fopen(tmp, "r+");
1338 if (errno == ENOENT) {
1339 log_err("fio: os or kernel doesn't support IO scheduler"
1343 td_verror(td, errno, "fopen iosched");
1350 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1351 if (ferror(f) || ret != 1) {
1352 td_verror(td, errno, "fwrite");
1360 * Read back and check that the selected scheduler is now the default.
1362 ret = fread(tmp, 1, sizeof(tmp) - 1, f);
1363 if (ferror(f) || ret < 0) {
1364 td_verror(td, errno, "fread");
1370 * either a list of io schedulers or "none\n" is expected. Strip the
1377 * Write to "none" entry doesn't fail, so check the result here.
1379 if (!strcmp(tmp, "none")) {
1380 log_err("fio: io scheduler is not tunable\n");
1385 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1386 if (!strstr(tmp, tmp2)) {
1387 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1388 td_verror(td, EINVAL, "iosched_switch");
1400 static bool keep_running(struct thread_data *td)
1402 unsigned long long limit;
1408 if (td->o.time_based)
1414 if (exceeds_number_ios(td))
1418 limit = td->o.io_size;
1422 if (limit != -1ULL && ddir_rw_sum(td->io_bytes) < limit) {
1426 * If the difference is less than the maximum IO size, we
1429 diff = limit - ddir_rw_sum(td->io_bytes);
1430 if (diff < td_max_bs(td))
1433 if (fio_files_done(td) && !td->o.io_size)
1442 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1444 size_t newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1448 str = malloc(newlen);
1449 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1451 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1454 log_err("fio: exec of cmd <%s> failed\n", str);
1461 * Dry run to compute correct state of numberio for verification.
1463 static uint64_t do_dry_run(struct thread_data *td)
1465 td_set_runstate(td, TD_RUNNING);
1467 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1468 (!flist_empty(&td->trim_list)) || !io_complete_bytes_exceeded(td)) {
1472 if (td->terminate || td->done)
1475 io_u = get_io_u(td);
1476 if (IS_ERR_OR_NULL(io_u))
1479 io_u_set(td, io_u, IO_U_F_FLIGHT);
1482 if (ddir_rw(acct_ddir(io_u)))
1483 td->io_issues[acct_ddir(io_u)]++;
1484 if (ddir_rw(io_u->ddir)) {
1485 io_u_mark_depth(td, 1);
1486 td->ts.total_io_u[io_u->ddir]++;
1489 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1491 td->o.verify != VERIFY_NONE &&
1492 !td->o.experimental_verify)
1493 log_io_piece(td, io_u);
1495 ret = io_u_sync_complete(td, io_u);
1499 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1503 struct thread_data *td;
1504 struct sk_out *sk_out;
1508 * Entry point for the thread based jobs. The process based jobs end up
1509 * here as well, after a little setup.
1511 static void *thread_main(void *data)
1513 struct fork_data *fd = data;
1514 unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
1515 struct thread_data *td = fd->td;
1516 struct thread_options *o = &td->o;
1517 struct sk_out *sk_out = fd->sk_out;
1518 uint64_t bytes_done[DDIR_RWDIR_CNT];
1519 int deadlock_loop_cnt;
1520 bool clear_state, did_some_io;
1523 sk_out_assign(sk_out);
1526 if (!o->use_thread) {
1532 fio_local_clock_init();
1534 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1537 fio_server_send_start(td);
1539 INIT_FLIST_HEAD(&td->io_log_list);
1540 INIT_FLIST_HEAD(&td->io_hist_list);
1541 INIT_FLIST_HEAD(&td->verify_list);
1542 INIT_FLIST_HEAD(&td->trim_list);
1543 td->io_hist_tree = RB_ROOT;
1545 ret = mutex_cond_init_pshared(&td->io_u_lock, &td->free_cond);
1547 td_verror(td, ret, "mutex_cond_init_pshared");
1550 ret = cond_init_pshared(&td->verify_cond);
1552 td_verror(td, ret, "mutex_cond_pshared");
1556 td_set_runstate(td, TD_INITIALIZED);
1557 dprint(FD_MUTEX, "up startup_sem\n");
1558 fio_sem_up(startup_sem);
1559 dprint(FD_MUTEX, "wait on td->sem\n");
1560 fio_sem_down(td->sem);
1561 dprint(FD_MUTEX, "done waiting on td->sem\n");
1564 * A new gid requires privilege, so we need to do this before setting
1567 if (o->gid != -1U && setgid(o->gid)) {
1568 td_verror(td, errno, "setgid");
1571 if (o->uid != -1U && setuid(o->uid)) {
1572 td_verror(td, errno, "setuid");
1577 * Do this early, we don't want the compress threads to be limited
1578 * to the same CPUs as the IO workers. So do this before we set
1579 * any potential CPU affinity
1581 if (iolog_compress_init(td, sk_out))
1585 * If we have a gettimeofday() thread, make sure we exclude that
1586 * thread from this job
1589 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1592 * Set affinity first, in case it has an impact on the memory
1595 if (fio_option_is_set(o, cpumask)) {
1596 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1597 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1599 log_err("fio: no CPUs set\n");
1600 log_err("fio: Try increasing number of available CPUs\n");
1601 td_verror(td, EINVAL, "cpus_split");
1605 ret = fio_setaffinity(td->pid, o->cpumask);
1607 td_verror(td, errno, "cpu_set_affinity");
1612 #ifdef CONFIG_LIBNUMA
1613 /* numa node setup */
1614 if (fio_option_is_set(o, numa_cpunodes) ||
1615 fio_option_is_set(o, numa_memnodes)) {
1616 struct bitmask *mask;
1618 if (numa_available() < 0) {
1619 td_verror(td, errno, "Does not support NUMA API\n");
1623 if (fio_option_is_set(o, numa_cpunodes)) {
1624 mask = numa_parse_nodestring(o->numa_cpunodes);
1625 ret = numa_run_on_node_mask(mask);
1626 numa_free_nodemask(mask);
1628 td_verror(td, errno, \
1629 "numa_run_on_node_mask failed\n");
1634 if (fio_option_is_set(o, numa_memnodes)) {
1636 if (o->numa_memnodes)
1637 mask = numa_parse_nodestring(o->numa_memnodes);
1639 switch (o->numa_mem_mode) {
1640 case MPOL_INTERLEAVE:
1641 numa_set_interleave_mask(mask);
1644 numa_set_membind(mask);
1647 numa_set_localalloc();
1649 case MPOL_PREFERRED:
1650 numa_set_preferred(o->numa_mem_prefer_node);
1658 numa_free_nodemask(mask);
1664 if (fio_pin_memory(td))
1668 * May alter parameters that init_io_u() will use, so we need to
1671 if (!init_iolog(td))
1677 if (o->verify_async && verify_async_init(td))
1680 if (fio_option_is_set(o, ioprio) ||
1681 fio_option_is_set(o, ioprio_class)) {
1682 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1684 td_verror(td, errno, "ioprio_set");
1689 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1693 if (nice(o->nice) == -1 && errno != 0) {
1694 td_verror(td, errno, "nice");
1698 if (o->ioscheduler && switch_ioscheduler(td))
1701 if (!o->create_serialize && setup_files(td))
1707 if (!init_random_map(td))
1710 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1713 if (o->pre_read && !pre_read_files(td))
1716 fio_verify_init(td);
1718 if (rate_submit_init(td, sk_out))
1721 set_epoch_time(td, o->log_unix_epoch);
1722 fio_getrusage(&td->ru_start);
1723 memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
1724 memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
1725 memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch));
1727 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1728 o->ratemin[DDIR_TRIM]) {
1729 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1730 sizeof(td->bw_sample_time));
1731 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1732 sizeof(td->bw_sample_time));
1733 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1734 sizeof(td->bw_sample_time));
1737 memset(bytes_done, 0, sizeof(bytes_done));
1738 clear_state = false;
1739 did_some_io = false;
1741 while (keep_running(td)) {
1742 uint64_t verify_bytes;
1744 fio_gettime(&td->start, NULL);
1745 memcpy(&td->ts_cache, &td->start, sizeof(td->start));
1748 clear_io_state(td, 0);
1750 if (o->unlink_each_loop && unlink_all_files(td))
1754 prune_io_piece_log(td);
1756 if (td->o.verify_only && td_write(td))
1757 verify_bytes = do_dry_run(td);
1759 do_io(td, bytes_done);
1761 if (!ddir_rw_sum(bytes_done)) {
1762 fio_mark_td_terminate(td);
1765 verify_bytes = bytes_done[DDIR_WRITE] +
1766 bytes_done[DDIR_TRIM];
1771 * If we took too long to shut down, the main thread could
1772 * already consider us reaped/exited. If that happens, break
1775 if (td->runstate >= TD_EXITED)
1781 * Make sure we've successfully updated the rusage stats
1782 * before waiting on the stat mutex. Otherwise we could have
1783 * the stat thread holding stat mutex and waiting for
1784 * the rusage_sem, which would never get upped because
1785 * this thread is waiting for the stat mutex.
1787 deadlock_loop_cnt = 0;
1789 check_update_rusage(td);
1790 if (!fio_sem_down_trylock(stat_sem))
1793 if (deadlock_loop_cnt++ > 5000) {
1794 log_err("fio seems to be stuck grabbing stat_sem, forcibly exiting\n");
1795 td->error = EDEADLK;
1800 if (td_read(td) && td->io_bytes[DDIR_READ])
1801 update_runtime(td, elapsed_us, DDIR_READ);
1802 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1803 update_runtime(td, elapsed_us, DDIR_WRITE);
1804 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1805 update_runtime(td, elapsed_us, DDIR_TRIM);
1806 fio_gettime(&td->start, NULL);
1807 fio_sem_up(stat_sem);
1809 if (td->error || td->terminate)
1812 if (!o->do_verify ||
1813 o->verify == VERIFY_NONE ||
1814 td_ioengine_flagged(td, FIO_UNIDIR))
1817 if (ddir_rw_sum(bytes_done))
1820 clear_io_state(td, 0);
1822 fio_gettime(&td->start, NULL);
1824 do_verify(td, verify_bytes);
1827 * See comment further up for why this is done here.
1829 check_update_rusage(td);
1831 fio_sem_down(stat_sem);
1832 update_runtime(td, elapsed_us, DDIR_READ);
1833 fio_gettime(&td->start, NULL);
1834 fio_sem_up(stat_sem);
1836 if (td->error || td->terminate)
1841 * If td ended up with no I/O when it should have had,
1842 * then something went wrong unless FIO_NOIO or FIO_DISKLESSIO.
1843 * (Are we not missing other flags that can be ignored ?)
1845 if ((td->o.size || td->o.io_size) && !ddir_rw_sum(bytes_done) &&
1846 !did_some_io && !td->o.create_only &&
1847 !(td_ioengine_flagged(td, FIO_NOIO) ||
1848 td_ioengine_flagged(td, FIO_DISKLESSIO)))
1849 log_err("%s: No I/O performed by %s, "
1850 "perhaps try --debug=io option for details?\n",
1851 td->o.name, td->io_ops->name);
1853 td_set_runstate(td, TD_FINISHING);
1855 update_rusage_stat(td);
1856 td->ts.total_run_time = mtime_since_now(&td->epoch);
1857 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1858 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1859 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1861 if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
1862 (td->o.verify != VERIFY_NONE && td_write(td)))
1863 verify_save_state(td->thread_number);
1865 fio_unpin_memory(td);
1867 td_writeout_logs(td, true);
1869 iolog_compress_exit(td);
1870 rate_submit_exit(td);
1872 if (o->exec_postrun)
1873 exec_string(o, o->exec_postrun, (const char *)"postrun");
1875 if (exitall_on_terminate || (o->exitall_error && td->error))
1876 fio_terminate_threads(td->groupid);
1880 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1883 if (o->verify_async)
1884 verify_async_exit(td);
1886 close_and_free_files(td);
1889 cgroup_shutdown(td, cgroup_mnt);
1890 verify_free_state(td);
1892 if (td->zone_state_index) {
1895 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1896 free(td->zone_state_index[i]);
1897 free(td->zone_state_index);
1898 td->zone_state_index = NULL;
1901 if (fio_option_is_set(o, cpumask)) {
1902 ret = fio_cpuset_exit(&o->cpumask);
1904 td_verror(td, ret, "fio_cpuset_exit");
1908 * do this very late, it will log file closing as well
1910 if (o->write_iolog_file)
1911 write_iolog_close(td);
1913 td_set_runstate(td, TD_EXITED);
1916 * Do this last after setting our runstate to exited, so we
1917 * know that the stat thread is signaled.
1919 check_update_rusage(td);
1922 return (void *) (uintptr_t) td->error;
1926 * Run over the job map and reap the threads that have exited, if any.
1928 static void reap_threads(unsigned int *nr_running, uint64_t *t_rate,
1931 struct thread_data *td;
1932 unsigned int cputhreads, realthreads, pending;
1936 * reap exited threads (TD_EXITED -> TD_REAPED)
1938 realthreads = pending = cputhreads = 0;
1939 for_each_td(td, i) {
1942 if (!strcmp(td->o.ioengine, "cpuio"))
1951 if (td->runstate == TD_REAPED)
1953 if (td->o.use_thread) {
1954 if (td->runstate == TD_EXITED) {
1955 td_set_runstate(td, TD_REAPED);
1962 if (td->runstate == TD_EXITED)
1966 * check if someone quit or got killed in an unusual way
1968 ret = waitpid(td->pid, &status, flags);
1970 if (errno == ECHILD) {
1971 log_err("fio: pid=%d disappeared %d\n",
1972 (int) td->pid, td->runstate);
1974 td_set_runstate(td, TD_REAPED);
1978 } else if (ret == td->pid) {
1979 if (WIFSIGNALED(status)) {
1980 int sig = WTERMSIG(status);
1982 if (sig != SIGTERM && sig != SIGUSR2)
1983 log_err("fio: pid=%d, got signal=%d\n",
1984 (int) td->pid, sig);
1986 td_set_runstate(td, TD_REAPED);
1989 if (WIFEXITED(status)) {
1990 if (WEXITSTATUS(status) && !td->error)
1991 td->error = WEXITSTATUS(status);
1993 td_set_runstate(td, TD_REAPED);
1999 * If the job is stuck, do a forceful timeout of it and
2002 if (td->terminate &&
2003 td->runstate < TD_FSYNCING &&
2004 time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) {
2005 log_err("fio: job '%s' (state=%d) hasn't exited in "
2006 "%lu seconds, it appears to be stuck. Doing "
2007 "forceful exit of this job.\n",
2008 td->o.name, td->runstate,
2009 (unsigned long) time_since_now(&td->terminate_time));
2010 td_set_runstate(td, TD_REAPED);
2015 * thread is not dead, continue
2021 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
2022 (*t_rate) -= ddir_rw_sum(td->o.rate);
2029 done_secs += mtime_since_now(&td->epoch) / 1000;
2030 profile_td_exit(td);
2033 if (*nr_running == cputhreads && !pending && realthreads)
2034 fio_terminate_threads(TERMINATE_ALL);
2037 static bool __check_trigger_file(void)
2044 if (stat(trigger_file, &sb))
2047 if (unlink(trigger_file) < 0)
2048 log_err("fio: failed to unlink %s: %s\n", trigger_file,
2054 static bool trigger_timedout(void)
2056 if (trigger_timeout)
2057 if (time_since_genesis() >= trigger_timeout) {
2058 trigger_timeout = 0;
2065 void exec_trigger(const char *cmd)
2069 if (!cmd || cmd[0] == '\0')
2074 log_err("fio: failed executing %s trigger\n", cmd);
2077 void check_trigger_file(void)
2079 if (__check_trigger_file() || trigger_timedout()) {
2081 fio_clients_send_trigger(trigger_remote_cmd);
2083 verify_save_state(IO_LIST_ALL);
2084 fio_terminate_threads(TERMINATE_ALL);
2085 exec_trigger(trigger_cmd);
2090 static int fio_verify_load_state(struct thread_data *td)
2094 if (!td->o.verify_state)
2100 ret = fio_server_get_verify_state(td->o.name,
2101 td->thread_number - 1, &data);
2103 verify_assign_state(td, data);
2105 ret = verify_load_state(td, "local");
2110 static void do_usleep(unsigned int usecs)
2112 check_for_running_stats();
2113 check_trigger_file();
2117 static bool check_mount_writes(struct thread_data *td)
2122 if (!td_write(td) || td->o.allow_mounted_write)
2126 * If FIO_HAVE_CHARDEV_SIZE is defined, it's likely that chrdevs
2127 * are mkfs'd and mounted.
2129 for_each_file(td, f, i) {
2130 #ifdef FIO_HAVE_CHARDEV_SIZE
2131 if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR)
2133 if (f->filetype != FIO_TYPE_BLOCK)
2136 if (device_is_mounted(f->file_name))
2142 log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.\n", f->file_name);
2146 static bool waitee_running(struct thread_data *me)
2148 const char *waitee = me->o.wait_for;
2149 const char *self = me->o.name;
2150 struct thread_data *td;
2156 for_each_td(td, i) {
2157 if (!strcmp(td->o.name, self) || strcmp(td->o.name, waitee))
2160 if (td->runstate < TD_EXITED) {
2161 dprint(FD_PROCESS, "%s fenced by %s(%s)\n",
2163 runstate_to_name(td->runstate));
2168 dprint(FD_PROCESS, "%s: %s completed, can run\n", self, waitee);
2173 * Main function for kicking off and reaping jobs, as needed.
2175 static void run_threads(struct sk_out *sk_out)
2177 struct thread_data *td;
2178 unsigned int i, todo, nr_running, nr_started;
2179 uint64_t m_rate, t_rate;
2182 if (fio_gtod_offload && fio_start_gtod_thread())
2185 fio_idle_prof_init();
2189 nr_thread = nr_process = 0;
2190 for_each_td(td, i) {
2191 if (check_mount_writes(td))
2193 if (td->o.use_thread)
2199 if (output_format & FIO_OUTPUT_NORMAL) {
2200 log_info("Starting ");
2202 log_info("%d thread%s", nr_thread,
2203 nr_thread > 1 ? "s" : "");
2207 log_info("%d process%s", nr_process,
2208 nr_process > 1 ? "es" : "");
2214 todo = thread_number;
2217 m_rate = t_rate = 0;
2219 for_each_td(td, i) {
2220 print_status_init(td->thread_number - 1);
2222 if (!td->o.create_serialize)
2225 if (fio_verify_load_state(td))
2229 * do file setup here so it happens sequentially,
2230 * we don't want X number of threads getting their
2231 * client data interspersed on disk
2233 if (setup_files(td)) {
2237 log_err("fio: pid=%d, err=%d/%s\n",
2238 (int) td->pid, td->error, td->verror);
2239 td_set_runstate(td, TD_REAPED);
2246 * for sharing to work, each job must always open
2247 * its own files. so close them, if we opened them
2250 for_each_file(td, f, j) {
2251 if (fio_file_open(f))
2252 td_io_close_file(td, f);
2257 /* start idle threads before io threads start to run */
2258 fio_idle_prof_start();
2263 struct thread_data *map[REAL_MAX_JOBS];
2264 struct timespec this_start;
2265 int this_jobs = 0, left;
2266 struct fork_data *fd;
2269 * create threads (TD_NOT_CREATED -> TD_CREATED)
2271 for_each_td(td, i) {
2272 if (td->runstate != TD_NOT_CREATED)
2276 * never got a chance to start, killed by other
2277 * thread for some reason
2279 if (td->terminate) {
2284 if (td->o.start_delay) {
2285 spent = utime_since_genesis();
2287 if (td->o.start_delay > spent)
2291 if (td->o.stonewall && (nr_started || nr_running)) {
2292 dprint(FD_PROCESS, "%s: stonewall wait\n",
2297 if (waitee_running(td)) {
2298 dprint(FD_PROCESS, "%s: waiting for %s\n",
2299 td->o.name, td->o.wait_for);
2305 td->rusage_sem = fio_sem_init(FIO_SEM_LOCKED);
2306 td->update_rusage = 0;
2309 * Set state to created. Thread will transition
2310 * to TD_INITIALIZED when it's done setting up.
2312 td_set_runstate(td, TD_CREATED);
2313 map[this_jobs++] = td;
2316 fd = calloc(1, sizeof(*fd));
2318 fd->sk_out = sk_out;
2320 if (td->o.use_thread) {
2323 dprint(FD_PROCESS, "will pthread_create\n");
2324 ret = pthread_create(&td->thread, NULL,
2327 log_err("pthread_create: %s\n",
2334 ret = pthread_detach(td->thread);
2336 log_err("pthread_detach: %s",
2340 dprint(FD_PROCESS, "will fork\n");
2345 ret = (int)(uintptr_t)thread_main(fd);
2347 } else if (i == fio_debug_jobno)
2348 *fio_debug_jobp = pid;
2350 dprint(FD_MUTEX, "wait on startup_sem\n");
2351 if (fio_sem_down_timeout(startup_sem, 10000)) {
2352 log_err("fio: job startup hung? exiting.\n");
2353 fio_terminate_threads(TERMINATE_ALL);
2359 dprint(FD_MUTEX, "done waiting on startup_sem\n");
2363 * Wait for the started threads to transition to
2366 fio_gettime(&this_start, NULL);
2368 while (left && !fio_abort) {
2369 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
2374 for (i = 0; i < this_jobs; i++) {
2378 if (td->runstate == TD_INITIALIZED) {
2381 } else if (td->runstate >= TD_EXITED) {
2385 nr_running++; /* work-around... */
2391 log_err("fio: %d job%s failed to start\n", left,
2392 left > 1 ? "s" : "");
2393 for (i = 0; i < this_jobs; i++) {
2397 kill(td->pid, SIGTERM);
2403 * start created threads (TD_INITIALIZED -> TD_RUNNING).
2405 for_each_td(td, i) {
2406 if (td->runstate != TD_INITIALIZED)
2409 if (in_ramp_time(td))
2410 td_set_runstate(td, TD_RAMP);
2412 td_set_runstate(td, TD_RUNNING);
2415 m_rate += ddir_rw_sum(td->o.ratemin);
2416 t_rate += ddir_rw_sum(td->o.rate);
2418 fio_sem_up(td->sem);
2421 reap_threads(&nr_running, &t_rate, &m_rate);
2427 while (nr_running) {
2428 reap_threads(&nr_running, &t_rate, &m_rate);
2432 fio_idle_prof_stop();
2437 static void free_disk_util(void)
2439 disk_util_prune_entries();
2440 helper_thread_destroy();
2443 int fio_backend(struct sk_out *sk_out)
2445 struct thread_data *td;
2449 if (load_profile(exec_profile))
2452 exec_profile = NULL;
2458 struct log_params p = {
2459 .log_type = IO_LOG_TYPE_BW,
2462 setup_log(&agg_io_log[DDIR_READ], &p, "agg-read_bw.log");
2463 setup_log(&agg_io_log[DDIR_WRITE], &p, "agg-write_bw.log");
2464 setup_log(&agg_io_log[DDIR_TRIM], &p, "agg-trim_bw.log");
2467 startup_sem = fio_sem_init(FIO_SEM_LOCKED);
2468 if (startup_sem == NULL)
2473 helper_thread_create(startup_sem, sk_out);
2475 cgroup_list = smalloc(sizeof(*cgroup_list));
2477 INIT_FLIST_HEAD(cgroup_list);
2479 run_threads(sk_out);
2481 helper_thread_exit();
2486 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2487 struct io_log *log = agg_io_log[i];
2489 flush_log(log, false);
2495 for_each_td(td, i) {
2496 steadystate_free(td);
2497 fio_options_free(td);
2498 if (td->rusage_sem) {
2499 fio_sem_remove(td->rusage_sem);
2500 td->rusage_sem = NULL;
2502 fio_sem_remove(td->sem);
2508 cgroup_kill(cgroup_list);
2512 fio_sem_remove(startup_sem);