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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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"
62 static struct fio_mutex *startup_mutex;
63 static struct flist_head *cgroup_list;
64 static char *cgroup_mnt;
65 static int exit_value;
66 static volatile int fio_abort;
67 static unsigned int nr_process = 0;
68 static unsigned int nr_thread = 0;
70 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
73 unsigned int thread_number = 0;
74 unsigned int stat_number = 0;
77 unsigned long done_secs = 0;
79 #define PAGE_ALIGN(buf) \
80 (char *) (((uintptr_t) (buf) + page_mask) & ~page_mask)
82 #define JOB_START_TIMEOUT (5 * 1000)
84 static void sig_int(int sig)
88 fio_server_got_signal(sig);
90 log_info("\nfio: terminating on signal %d\n", sig);
95 fio_terminate_threads(TERMINATE_ALL);
99 void sig_show_status(int sig)
101 show_running_run_stats();
104 static void set_sig_handlers(void)
106 struct sigaction act;
108 memset(&act, 0, sizeof(act));
109 act.sa_handler = sig_int;
110 act.sa_flags = SA_RESTART;
111 sigaction(SIGINT, &act, NULL);
113 memset(&act, 0, sizeof(act));
114 act.sa_handler = sig_int;
115 act.sa_flags = SA_RESTART;
116 sigaction(SIGTERM, &act, NULL);
118 /* Windows uses SIGBREAK as a quit signal from other applications */
120 memset(&act, 0, sizeof(act));
121 act.sa_handler = sig_int;
122 act.sa_flags = SA_RESTART;
123 sigaction(SIGBREAK, &act, NULL);
126 memset(&act, 0, sizeof(act));
127 act.sa_handler = sig_show_status;
128 act.sa_flags = SA_RESTART;
129 sigaction(SIGUSR1, &act, NULL);
132 memset(&act, 0, sizeof(act));
133 act.sa_handler = sig_int;
134 act.sa_flags = SA_RESTART;
135 sigaction(SIGPIPE, &act, NULL);
140 * Check if we are above the minimum rate given.
142 static bool __check_min_rate(struct thread_data *td, struct timeval *now,
145 unsigned long long bytes = 0;
146 unsigned long iops = 0;
149 unsigned int ratemin = 0;
150 unsigned int rate_iops = 0;
151 unsigned int rate_iops_min = 0;
153 assert(ddir_rw(ddir));
155 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
159 * allow a 2 second settle period in the beginning
161 if (mtime_since(&td->start, now) < 2000)
164 iops += td->this_io_blocks[ddir];
165 bytes += td->this_io_bytes[ddir];
166 ratemin += td->o.ratemin[ddir];
167 rate_iops += td->o.rate_iops[ddir];
168 rate_iops_min += td->o.rate_iops_min[ddir];
171 * if rate blocks is set, sample is running
173 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
174 spent = mtime_since(&td->lastrate[ddir], now);
175 if (spent < td->o.ratecycle)
178 if (td->o.rate[ddir] || td->o.ratemin[ddir]) {
180 * check bandwidth specified rate
182 if (bytes < td->rate_bytes[ddir]) {
183 log_err("%s: min rate %u not met\n", td->o.name,
188 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
192 if (rate < ratemin ||
193 bytes < td->rate_bytes[ddir]) {
194 log_err("%s: min rate %u not met, got"
195 " %luKB/sec\n", td->o.name,
202 * checks iops specified rate
204 if (iops < rate_iops) {
205 log_err("%s: min iops rate %u not met\n",
206 td->o.name, rate_iops);
210 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
214 if (rate < rate_iops_min ||
215 iops < td->rate_blocks[ddir]) {
216 log_err("%s: min iops rate %u not met,"
217 " got %lu\n", td->o.name,
218 rate_iops_min, rate);
225 td->rate_bytes[ddir] = bytes;
226 td->rate_blocks[ddir] = iops;
227 memcpy(&td->lastrate[ddir], now, sizeof(*now));
231 static bool check_min_rate(struct thread_data *td, struct timeval *now)
235 if (td->bytes_done[DDIR_READ])
236 ret |= __check_min_rate(td, now, DDIR_READ);
237 if (td->bytes_done[DDIR_WRITE])
238 ret |= __check_min_rate(td, now, DDIR_WRITE);
239 if (td->bytes_done[DDIR_TRIM])
240 ret |= __check_min_rate(td, now, DDIR_TRIM);
246 * When job exits, we can cancel the in-flight IO if we are using async
247 * io. Attempt to do so.
249 static void cleanup_pending_aio(struct thread_data *td)
254 * get immediately available events, if any
256 r = io_u_queued_complete(td, 0);
261 * now cancel remaining active events
263 if (td->io_ops->cancel) {
267 io_u_qiter(&td->io_u_all, io_u, i) {
268 if (io_u->flags & IO_U_F_FLIGHT) {
269 r = td->io_ops->cancel(td, io_u);
277 r = io_u_queued_complete(td, td->cur_depth);
281 * Helper to handle the final sync of a file. Works just like the normal
282 * io path, just does everything sync.
284 static bool fio_io_sync(struct thread_data *td, struct fio_file *f)
286 struct io_u *io_u = __get_io_u(td);
292 io_u->ddir = DDIR_SYNC;
295 if (td_io_prep(td, io_u)) {
301 ret = td_io_queue(td, io_u);
303 td_verror(td, io_u->error, "td_io_queue");
306 } else if (ret == FIO_Q_QUEUED) {
307 if (td_io_commit(td))
309 if (io_u_queued_complete(td, 1) < 0)
311 } else if (ret == FIO_Q_COMPLETED) {
313 td_verror(td, io_u->error, "td_io_queue");
317 if (io_u_sync_complete(td, io_u) < 0)
319 } else if (ret == FIO_Q_BUSY) {
320 if (td_io_commit(td))
328 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
332 if (fio_file_open(f))
333 return fio_io_sync(td, f);
335 if (td_io_open_file(td, f))
338 ret = fio_io_sync(td, f);
339 td_io_close_file(td, f);
343 static inline void __update_tv_cache(struct thread_data *td)
345 fio_gettime(&td->tv_cache, NULL);
348 static inline void update_tv_cache(struct thread_data *td)
350 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
351 __update_tv_cache(td);
354 static inline bool runtime_exceeded(struct thread_data *td, struct timeval *t)
356 if (in_ramp_time(td))
360 if (utime_since(&td->epoch, t) >= td->o.timeout)
367 * We need to update the runtime consistently in ms, but keep a running
368 * tally of the current elapsed time in microseconds for sub millisecond
371 static inline void update_runtime(struct thread_data *td,
372 unsigned long long *elapsed_us,
373 const enum fio_ddir ddir)
375 if (ddir == DDIR_WRITE && td_write(td) && td->o.verify_only)
378 td->ts.runtime[ddir] -= (elapsed_us[ddir] + 999) / 1000;
379 elapsed_us[ddir] += utime_since_now(&td->start);
380 td->ts.runtime[ddir] += (elapsed_us[ddir] + 999) / 1000;
383 static bool break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
388 if (ret < 0 || td->error) {
390 enum error_type_bit eb;
395 eb = td_error_type(ddir, err);
396 if (!(td->o.continue_on_error & (1 << eb)))
399 if (td_non_fatal_error(td, eb, err)) {
401 * Continue with the I/Os in case of
404 update_error_count(td, err);
408 } else if (td->o.fill_device && err == ENOSPC) {
410 * We expect to hit this error if
411 * fill_device option is set.
414 fio_mark_td_terminate(td);
418 * Stop the I/O in case of a fatal
421 update_error_count(td, err);
429 static void check_update_rusage(struct thread_data *td)
431 if (td->update_rusage) {
432 td->update_rusage = 0;
433 update_rusage_stat(td);
434 fio_mutex_up(td->rusage_sem);
438 static int wait_for_completions(struct thread_data *td, struct timeval *time)
440 const int full = queue_full(td);
444 if (td->flags & TD_F_REGROW_LOGS) {
445 ret = io_u_quiesce(td);
451 * if the queue is full, we MUST reap at least 1 event
453 min_evts = min(td->o.iodepth_batch_complete_min, td->cur_depth);
454 if ((full && !min_evts) || !td->o.iodepth_batch_complete_min)
457 if (time && (__should_check_rate(td, DDIR_READ) ||
458 __should_check_rate(td, DDIR_WRITE) ||
459 __should_check_rate(td, DDIR_TRIM)))
460 fio_gettime(time, NULL);
463 ret = io_u_queued_complete(td, min_evts);
466 } while (full && (td->cur_depth > td->o.iodepth_low));
471 int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
472 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
473 struct timeval *comp_time)
478 case FIO_Q_COMPLETED:
481 clear_io_u(td, io_u);
482 } else if (io_u->resid) {
483 int bytes = io_u->xfer_buflen - io_u->resid;
484 struct fio_file *f = io_u->file;
487 *bytes_issued += bytes;
490 trim_io_piece(td, io_u);
497 unlog_io_piece(td, io_u);
498 td_verror(td, EIO, "full resid");
503 io_u->xfer_buflen = io_u->resid;
504 io_u->xfer_buf += bytes;
505 io_u->offset += bytes;
507 if (ddir_rw(io_u->ddir))
508 td->ts.short_io_u[io_u->ddir]++;
511 if (io_u->offset == f->real_file_size)
514 requeue_io_u(td, &io_u);
517 if (comp_time && (__should_check_rate(td, DDIR_READ) ||
518 __should_check_rate(td, DDIR_WRITE) ||
519 __should_check_rate(td, DDIR_TRIM)))
520 fio_gettime(comp_time, NULL);
522 *ret = io_u_sync_complete(td, io_u);
527 if (td->flags & TD_F_REGROW_LOGS)
531 * when doing I/O (not when verifying),
532 * check for any errors that are to be ignored
540 * if the engine doesn't have a commit hook,
541 * the io_u is really queued. if it does have such
542 * a hook, it has to call io_u_queued() itself.
544 if (td->io_ops->commit == NULL)
545 io_u_queued(td, io_u);
547 *bytes_issued += io_u->xfer_buflen;
551 unlog_io_piece(td, io_u);
552 requeue_io_u(td, &io_u);
553 ret2 = td_io_commit(td);
559 td_verror(td, -(*ret), "td_io_queue");
563 if (break_on_this_error(td, ddir, ret))
569 static inline bool io_in_polling(struct thread_data *td)
571 return !td->o.iodepth_batch_complete_min &&
572 !td->o.iodepth_batch_complete_max;
575 * Unlinks files from thread data fio_file structure
577 static int unlink_all_files(struct thread_data *td)
583 for_each_file(td, f, i) {
584 if (f->filetype != FIO_TYPE_FILE)
586 ret = td_io_unlink_file(td, f);
592 td_verror(td, ret, "unlink_all_files");
598 * The main verify engine. Runs over the writes we previously submitted,
599 * reads the blocks back in, and checks the crc/md5 of the data.
601 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
608 dprint(FD_VERIFY, "starting loop\n");
611 * sync io first and invalidate cache, to make sure we really
614 for_each_file(td, f, i) {
615 if (!fio_file_open(f))
617 if (fio_io_sync(td, f))
619 if (file_invalidate_cache(td, f))
623 check_update_rusage(td);
629 * verify_state needs to be reset before verification
630 * proceeds so that expected random seeds match actual
631 * random seeds in headers. The main loop will reset
632 * all random number generators if randrepeat is set.
634 if (!td->o.rand_repeatable)
635 td_fill_verify_state_seed(td);
637 td_set_runstate(td, TD_VERIFYING);
640 while (!td->terminate) {
645 check_update_rusage(td);
647 if (runtime_exceeded(td, &td->tv_cache)) {
648 __update_tv_cache(td);
649 if (runtime_exceeded(td, &td->tv_cache)) {
650 fio_mark_td_terminate(td);
655 if (flow_threshold_exceeded(td))
658 if (!td->o.experimental_verify) {
659 io_u = __get_io_u(td);
663 if (get_next_verify(td, io_u)) {
668 if (td_io_prep(td, io_u)) {
673 if (ddir_rw_sum(td->bytes_done) + td->o.rw_min_bs > verify_bytes)
676 while ((io_u = get_io_u(td)) != NULL) {
677 if (IS_ERR_OR_NULL(io_u)) {
684 * We are only interested in the places where
685 * we wrote or trimmed IOs. Turn those into
686 * reads for verification purposes.
688 if (io_u->ddir == DDIR_READ) {
690 * Pretend we issued it for rwmix
693 td->io_issues[DDIR_READ]++;
696 } else if (io_u->ddir == DDIR_TRIM) {
697 io_u->ddir = DDIR_READ;
698 io_u_set(td, io_u, IO_U_F_TRIMMED);
700 } else if (io_u->ddir == DDIR_WRITE) {
701 io_u->ddir = DDIR_READ;
713 if (verify_state_should_stop(td, io_u)) {
718 if (td->o.verify_async)
719 io_u->end_io = verify_io_u_async;
721 io_u->end_io = verify_io_u;
724 if (!td->o.disable_slat)
725 fio_gettime(&io_u->start_time, NULL);
727 ret = td_io_queue(td, io_u);
729 if (io_queue_event(td, io_u, &ret, ddir, NULL, 1, NULL))
733 * if we can queue more, do so. but check if there are
734 * completed io_u's first. Note that we can get BUSY even
735 * without IO queued, if the system is resource starved.
738 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
739 if (full || io_in_polling(td))
740 ret = wait_for_completions(td, NULL);
746 check_update_rusage(td);
749 min_events = td->cur_depth;
752 ret = io_u_queued_complete(td, min_events);
754 cleanup_pending_aio(td);
756 td_set_runstate(td, TD_RUNNING);
758 dprint(FD_VERIFY, "exiting loop\n");
761 static bool exceeds_number_ios(struct thread_data *td)
763 unsigned long long number_ios;
765 if (!td->o.number_ios)
768 number_ios = ddir_rw_sum(td->io_blocks);
769 number_ios += td->io_u_queued + td->io_u_in_flight;
771 return number_ios >= (td->o.number_ios * td->loops);
774 static bool io_bytes_exceeded(struct thread_data *td, uint64_t *this_bytes)
776 unsigned long long bytes, limit;
779 bytes = this_bytes[DDIR_READ] + this_bytes[DDIR_WRITE];
780 else if (td_write(td))
781 bytes = this_bytes[DDIR_WRITE];
782 else if (td_read(td))
783 bytes = this_bytes[DDIR_READ];
785 bytes = this_bytes[DDIR_TRIM];
788 limit = td->o.io_limit;
793 return bytes >= limit || exceeds_number_ios(td);
796 static bool io_issue_bytes_exceeded(struct thread_data *td)
798 return io_bytes_exceeded(td, td->io_issue_bytes);
801 static bool io_complete_bytes_exceeded(struct thread_data *td)
803 return io_bytes_exceeded(td, td->this_io_bytes);
807 * used to calculate the next io time for rate control
810 static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
812 uint64_t secs, remainder, bps, bytes, iops;
814 assert(!(td->flags & TD_F_CHILD));
815 bytes = td->rate_io_issue_bytes[ddir];
816 bps = td->rate_bps[ddir];
818 if (td->o.rate_process == RATE_PROCESS_POISSON) {
820 iops = bps / td->o.bs[ddir];
821 val = (int64_t) (1000000 / iops) *
822 -logf(__rand_0_1(&td->poisson_state));
824 dprint(FD_RATE, "poisson rate iops=%llu\n",
825 (unsigned long long) 1000000 / val);
827 td->last_usec += val;
828 return td->last_usec;
831 remainder = bytes % bps;
832 return remainder * 1000000 / bps + secs * 1000000;
839 * Main IO worker function. It retrieves io_u's to process and queues
840 * and reaps them, checking for rate and errors along the way.
842 * Returns number of bytes written and trimmed.
844 static void do_io(struct thread_data *td, uint64_t *bytes_done)
848 uint64_t total_bytes, bytes_issued = 0;
850 for (i = 0; i < DDIR_RWDIR_CNT; i++)
851 bytes_done[i] = td->bytes_done[i];
853 if (in_ramp_time(td))
854 td_set_runstate(td, TD_RAMP);
856 td_set_runstate(td, TD_RUNNING);
860 total_bytes = td->o.size;
862 * Allow random overwrite workloads to write up to io_limit
863 * before starting verification phase as 'size' doesn't apply.
865 if (td_write(td) && td_random(td) && td->o.norandommap)
866 total_bytes = max(total_bytes, (uint64_t) td->o.io_limit);
868 * If verify_backlog is enabled, we'll run the verify in this
869 * handler as well. For that case, we may need up to twice the
872 if (td->o.verify != VERIFY_NONE &&
873 (td_write(td) && td->o.verify_backlog))
874 total_bytes += td->o.size;
876 /* In trimwrite mode, each byte is trimmed and then written, so
877 * allow total_bytes to be twice as big */
878 if (td_trimwrite(td))
879 total_bytes += td->total_io_size;
881 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
882 (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) ||
884 struct timeval comp_time;
889 check_update_rusage(td);
891 if (td->terminate || td->done)
896 if (runtime_exceeded(td, &td->tv_cache)) {
897 __update_tv_cache(td);
898 if (runtime_exceeded(td, &td->tv_cache)) {
899 fio_mark_td_terminate(td);
904 if (flow_threshold_exceeded(td))
908 * Break if we exceeded the bytes. The exception is time
909 * based runs, but we still need to break out of the loop
910 * for those to run verification, if enabled.
912 if (bytes_issued >= total_bytes &&
913 (!td->o.time_based ||
914 (td->o.time_based && td->o.verify != VERIFY_NONE)))
918 if (IS_ERR_OR_NULL(io_u)) {
919 int err = PTR_ERR(io_u);
926 if (td->o.latency_target)
934 * Add verification end_io handler if:
935 * - Asked to verify (!td_rw(td))
936 * - Or the io_u is from our verify list (mixed write/ver)
938 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
939 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
941 if (!td->o.verify_pattern_bytes) {
942 io_u->rand_seed = __rand(&td->verify_state);
943 if (sizeof(int) != sizeof(long *))
944 io_u->rand_seed *= __rand(&td->verify_state);
947 if (verify_state_should_stop(td, io_u)) {
952 if (td->o.verify_async)
953 io_u->end_io = verify_io_u_async;
955 io_u->end_io = verify_io_u;
956 td_set_runstate(td, TD_VERIFYING);
957 } else if (in_ramp_time(td))
958 td_set_runstate(td, TD_RAMP);
960 td_set_runstate(td, TD_RUNNING);
963 * Always log IO before it's issued, so we know the specific
964 * order of it. The logged unit will track when the IO has
967 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
969 td->o.verify != VERIFY_NONE &&
970 !td->o.experimental_verify)
971 log_io_piece(td, io_u);
973 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
974 const unsigned long blen = io_u->xfer_buflen;
975 const enum fio_ddir ddir = acct_ddir(io_u);
980 workqueue_enqueue(&td->io_wq, &io_u->work);
984 td->io_issues[ddir]++;
985 td->io_issue_bytes[ddir] += blen;
986 td->rate_io_issue_bytes[ddir] += blen;
989 if (should_check_rate(td))
990 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
993 ret = td_io_queue(td, io_u);
995 if (should_check_rate(td))
996 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
998 if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
1002 * See if we need to complete some commands. Note that
1003 * we can get BUSY even without IO queued, if the
1004 * system is resource starved.
1007 full = queue_full(td) ||
1008 (ret == FIO_Q_BUSY && td->cur_depth);
1009 if (full || io_in_polling(td))
1010 ret = wait_for_completions(td, &comp_time);
1014 if (!ddir_rw_sum(td->bytes_done) &&
1015 !td_ioengine_flagged(td, FIO_NOIO))
1018 if (!in_ramp_time(td) && should_check_rate(td)) {
1019 if (check_min_rate(td, &comp_time)) {
1020 if (exitall_on_terminate || td->o.exitall_error)
1021 fio_terminate_threads(td->groupid);
1022 td_verror(td, EIO, "check_min_rate");
1026 if (!in_ramp_time(td) && td->o.latency_target)
1027 lat_target_check(td);
1029 if (td->o.thinktime) {
1030 unsigned long long b;
1032 b = ddir_rw_sum(td->io_blocks);
1033 if (!(b % td->o.thinktime_blocks)) {
1038 if (td->o.thinktime_spin)
1039 usec_spin(td->o.thinktime_spin);
1041 left = td->o.thinktime - td->o.thinktime_spin;
1043 usec_sleep(td, left);
1048 check_update_rusage(td);
1050 if (td->trim_entries)
1051 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
1053 if (td->o.fill_device && td->error == ENOSPC) {
1055 fio_mark_td_terminate(td);
1060 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1061 workqueue_flush(&td->io_wq);
1067 ret = io_u_queued_complete(td, i);
1068 if (td->o.fill_device && td->error == ENOSPC)
1072 if (should_fsync(td) && td->o.end_fsync) {
1073 td_set_runstate(td, TD_FSYNCING);
1075 for_each_file(td, f, i) {
1076 if (!fio_file_fsync(td, f))
1079 log_err("fio: end_fsync failed for file %s\n",
1084 cleanup_pending_aio(td);
1087 * stop job if we failed doing any IO
1089 if (!ddir_rw_sum(td->this_io_bytes))
1092 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1093 bytes_done[i] = td->bytes_done[i] - bytes_done[i];
1096 static void free_file_completion_logging(struct thread_data *td)
1101 for_each_file(td, f, i) {
1102 if (!f->last_write_comp)
1104 sfree(f->last_write_comp);
1108 static int init_file_completion_logging(struct thread_data *td,
1114 if (td->o.verify == VERIFY_NONE || !td->o.verify_state_save)
1117 for_each_file(td, f, i) {
1118 f->last_write_comp = scalloc(depth, sizeof(uint64_t));
1119 if (!f->last_write_comp)
1126 free_file_completion_logging(td);
1127 log_err("fio: failed to alloc write comp data\n");
1131 static void cleanup_io_u(struct thread_data *td)
1135 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
1137 if (td->io_ops->io_u_free)
1138 td->io_ops->io_u_free(td, io_u);
1140 fio_memfree(io_u, sizeof(*io_u));
1145 io_u_rexit(&td->io_u_requeues);
1146 io_u_qexit(&td->io_u_freelist);
1147 io_u_qexit(&td->io_u_all);
1149 free_file_completion_logging(td);
1152 static int init_io_u(struct thread_data *td)
1155 unsigned int max_bs, min_write;
1156 int cl_align, i, max_units;
1157 int data_xfer = 1, err;
1160 max_units = td->o.iodepth;
1161 max_bs = td_max_bs(td);
1162 min_write = td->o.min_bs[DDIR_WRITE];
1163 td->orig_buffer_size = (unsigned long long) max_bs
1164 * (unsigned long long) max_units;
1166 if (td_ioengine_flagged(td, FIO_NOIO) || !(td_read(td) || td_write(td)))
1170 err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
1171 err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
1172 err += io_u_qinit(&td->io_u_all, td->o.iodepth);
1175 log_err("fio: failed setting up IO queues\n");
1180 * if we may later need to do address alignment, then add any
1181 * possible adjustment here so that we don't cause a buffer
1182 * overflow later. this adjustment may be too much if we get
1183 * lucky and the allocator gives us an aligned address.
1185 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1186 td_ioengine_flagged(td, FIO_RAWIO))
1187 td->orig_buffer_size += page_mask + td->o.mem_align;
1189 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1192 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1193 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1196 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1197 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1201 if (data_xfer && allocate_io_mem(td))
1204 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1205 td_ioengine_flagged(td, FIO_RAWIO))
1206 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
1208 p = td->orig_buffer;
1210 cl_align = os_cache_line_size();
1212 for (i = 0; i < max_units; i++) {
1218 ptr = fio_memalign(cl_align, sizeof(*io_u));
1220 log_err("fio: unable to allocate aligned memory\n");
1225 memset(io_u, 0, sizeof(*io_u));
1226 INIT_FLIST_HEAD(&io_u->verify_list);
1227 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1231 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1234 io_u_fill_buffer(td, io_u, min_write, max_bs);
1235 if (td_write(td) && td->o.verify_pattern_bytes) {
1237 * Fill the buffer with the pattern if we are
1238 * going to be doing writes.
1240 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1245 io_u->flags = IO_U_F_FREE;
1246 io_u_qpush(&td->io_u_freelist, io_u);
1249 * io_u never leaves this stack, used for iteration of all
1252 io_u_qpush(&td->io_u_all, io_u);
1254 if (td->io_ops->io_u_init) {
1255 int ret = td->io_ops->io_u_init(td, io_u);
1258 log_err("fio: failed to init engine data: %d\n", ret);
1266 if (init_file_completion_logging(td, max_units))
1272 static int switch_ioscheduler(struct thread_data *td)
1274 #ifdef FIO_HAVE_IOSCHED_SWITCH
1275 char tmp[256], tmp2[128];
1279 if (td_ioengine_flagged(td, FIO_DISKLESSIO))
1282 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
1284 f = fopen(tmp, "r+");
1286 if (errno == ENOENT) {
1287 log_err("fio: os or kernel doesn't support IO scheduler"
1291 td_verror(td, errno, "fopen iosched");
1298 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1299 if (ferror(f) || ret != 1) {
1300 td_verror(td, errno, "fwrite");
1308 * Read back and check that the selected scheduler is now the default.
1310 memset(tmp, 0, sizeof(tmp));
1311 ret = fread(tmp, sizeof(tmp), 1, f);
1312 if (ferror(f) || ret < 0) {
1313 td_verror(td, errno, "fread");
1318 * either a list of io schedulers or "none\n" is expected.
1320 tmp[strlen(tmp) - 1] = '\0';
1323 * Write to "none" entry doesn't fail, so check the result here.
1325 if (!strcmp(tmp, "none")) {
1326 log_err("fio: io scheduler is not tunable\n");
1331 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1332 if (!strstr(tmp, tmp2)) {
1333 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1334 td_verror(td, EINVAL, "iosched_switch");
1346 static bool keep_running(struct thread_data *td)
1348 unsigned long long limit;
1352 if (td->o.time_based)
1358 if (exceeds_number_ios(td))
1362 limit = td->o.io_limit;
1366 if (limit != -1ULL && ddir_rw_sum(td->io_bytes) < limit) {
1370 * If the difference is less than the minimum IO size, we
1373 diff = limit - ddir_rw_sum(td->io_bytes);
1374 if (diff < td_max_bs(td))
1377 if (fio_files_done(td) && !td->o.io_limit)
1386 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1388 size_t newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1392 str = malloc(newlen);
1393 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1395 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1398 log_err("fio: exec of cmd <%s> failed\n", str);
1405 * Dry run to compute correct state of numberio for verification.
1407 static uint64_t do_dry_run(struct thread_data *td)
1409 td_set_runstate(td, TD_RUNNING);
1411 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1412 (!flist_empty(&td->trim_list)) || !io_complete_bytes_exceeded(td)) {
1416 if (td->terminate || td->done)
1419 io_u = get_io_u(td);
1420 if (IS_ERR_OR_NULL(io_u))
1423 io_u_set(td, io_u, IO_U_F_FLIGHT);
1426 if (ddir_rw(acct_ddir(io_u)))
1427 td->io_issues[acct_ddir(io_u)]++;
1428 if (ddir_rw(io_u->ddir)) {
1429 io_u_mark_depth(td, 1);
1430 td->ts.total_io_u[io_u->ddir]++;
1433 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1435 td->o.verify != VERIFY_NONE &&
1436 !td->o.experimental_verify)
1437 log_io_piece(td, io_u);
1439 ret = io_u_sync_complete(td, io_u);
1443 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1447 struct thread_data *td;
1448 struct sk_out *sk_out;
1452 * Entry point for the thread based jobs. The process based jobs end up
1453 * here as well, after a little setup.
1455 static void *thread_main(void *data)
1457 struct fork_data *fd = data;
1458 unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
1459 struct thread_data *td = fd->td;
1460 struct thread_options *o = &td->o;
1461 struct sk_out *sk_out = fd->sk_out;
1462 int deadlock_loop_cnt;
1466 sk_out_assign(sk_out);
1469 if (!o->use_thread) {
1475 fio_local_clock_init(o->use_thread);
1477 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1480 fio_server_send_start(td);
1482 INIT_FLIST_HEAD(&td->io_log_list);
1483 INIT_FLIST_HEAD(&td->io_hist_list);
1484 INIT_FLIST_HEAD(&td->verify_list);
1485 INIT_FLIST_HEAD(&td->trim_list);
1486 INIT_FLIST_HEAD(&td->next_rand_list);
1487 td->io_hist_tree = RB_ROOT;
1489 ret = mutex_cond_init_pshared(&td->io_u_lock, &td->free_cond);
1491 td_verror(td, ret, "mutex_cond_init_pshared");
1494 ret = cond_init_pshared(&td->verify_cond);
1496 td_verror(td, ret, "mutex_cond_pshared");
1500 td_set_runstate(td, TD_INITIALIZED);
1501 dprint(FD_MUTEX, "up startup_mutex\n");
1502 fio_mutex_up(startup_mutex);
1503 dprint(FD_MUTEX, "wait on td->mutex\n");
1504 fio_mutex_down(td->mutex);
1505 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1508 * A new gid requires privilege, so we need to do this before setting
1511 if (o->gid != -1U && setgid(o->gid)) {
1512 td_verror(td, errno, "setgid");
1515 if (o->uid != -1U && setuid(o->uid)) {
1516 td_verror(td, errno, "setuid");
1521 * Do this early, we don't want the compress threads to be limited
1522 * to the same CPUs as the IO workers. So do this before we set
1523 * any potential CPU affinity
1525 if (iolog_compress_init(td, sk_out))
1529 * If we have a gettimeofday() thread, make sure we exclude that
1530 * thread from this job
1533 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1536 * Set affinity first, in case it has an impact on the memory
1539 if (fio_option_is_set(o, cpumask)) {
1540 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1541 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1543 log_err("fio: no CPUs set\n");
1544 log_err("fio: Try increasing number of available CPUs\n");
1545 td_verror(td, EINVAL, "cpus_split");
1549 ret = fio_setaffinity(td->pid, o->cpumask);
1551 td_verror(td, errno, "cpu_set_affinity");
1556 #ifdef CONFIG_LIBNUMA
1557 /* numa node setup */
1558 if (fio_option_is_set(o, numa_cpunodes) ||
1559 fio_option_is_set(o, numa_memnodes)) {
1560 struct bitmask *mask;
1562 if (numa_available() < 0) {
1563 td_verror(td, errno, "Does not support NUMA API\n");
1567 if (fio_option_is_set(o, numa_cpunodes)) {
1568 mask = numa_parse_nodestring(o->numa_cpunodes);
1569 ret = numa_run_on_node_mask(mask);
1570 numa_free_nodemask(mask);
1572 td_verror(td, errno, \
1573 "numa_run_on_node_mask failed\n");
1578 if (fio_option_is_set(o, numa_memnodes)) {
1580 if (o->numa_memnodes)
1581 mask = numa_parse_nodestring(o->numa_memnodes);
1583 switch (o->numa_mem_mode) {
1584 case MPOL_INTERLEAVE:
1585 numa_set_interleave_mask(mask);
1588 numa_set_membind(mask);
1591 numa_set_localalloc();
1593 case MPOL_PREFERRED:
1594 numa_set_preferred(o->numa_mem_prefer_node);
1602 numa_free_nodemask(mask);
1608 if (fio_pin_memory(td))
1612 * May alter parameters that init_io_u() will use, so we need to
1621 if (o->verify_async && verify_async_init(td))
1624 if (fio_option_is_set(o, ioprio) ||
1625 fio_option_is_set(o, ioprio_class)) {
1626 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1628 td_verror(td, errno, "ioprio_set");
1633 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1637 if (nice(o->nice) == -1 && errno != 0) {
1638 td_verror(td, errno, "nice");
1642 if (o->ioscheduler && switch_ioscheduler(td))
1645 if (!o->create_serialize && setup_files(td))
1651 if (init_random_map(td))
1654 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1658 if (pre_read_files(td) < 0)
1662 fio_verify_init(td);
1664 if (rate_submit_init(td, sk_out))
1667 set_epoch_time(td, o->log_unix_epoch);
1668 fio_getrusage(&td->ru_start);
1669 memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
1670 memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
1672 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1673 o->ratemin[DDIR_TRIM]) {
1674 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1675 sizeof(td->bw_sample_time));
1676 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1677 sizeof(td->bw_sample_time));
1678 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1679 sizeof(td->bw_sample_time));
1683 while (keep_running(td)) {
1684 uint64_t verify_bytes;
1686 fio_gettime(&td->start, NULL);
1687 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1690 clear_io_state(td, 0);
1692 if (o->unlink_each_loop && unlink_all_files(td))
1696 prune_io_piece_log(td);
1698 if (td->o.verify_only && (td_write(td) || td_rw(td)))
1699 verify_bytes = do_dry_run(td);
1701 uint64_t bytes_done[DDIR_RWDIR_CNT];
1703 do_io(td, bytes_done);
1705 if (!ddir_rw_sum(bytes_done)) {
1706 fio_mark_td_terminate(td);
1709 verify_bytes = bytes_done[DDIR_WRITE] +
1710 bytes_done[DDIR_TRIM];
1715 * If we took too long to shut down, the main thread could
1716 * already consider us reaped/exited. If that happens, break
1719 if (td->runstate >= TD_EXITED)
1725 * Make sure we've successfully updated the rusage stats
1726 * before waiting on the stat mutex. Otherwise we could have
1727 * the stat thread holding stat mutex and waiting for
1728 * the rusage_sem, which would never get upped because
1729 * this thread is waiting for the stat mutex.
1731 deadlock_loop_cnt = 0;
1733 check_update_rusage(td);
1734 if (!fio_mutex_down_trylock(stat_mutex))
1737 if (deadlock_loop_cnt++ > 5000) {
1738 log_err("fio seems to be stuck grabbing stat_mutex, forcibly exiting\n");
1739 td->error = EDEADLK;
1744 if (td_read(td) && td->io_bytes[DDIR_READ])
1745 update_runtime(td, elapsed_us, DDIR_READ);
1746 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1747 update_runtime(td, elapsed_us, DDIR_WRITE);
1748 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1749 update_runtime(td, elapsed_us, DDIR_TRIM);
1750 fio_gettime(&td->start, NULL);
1751 fio_mutex_up(stat_mutex);
1753 if (td->error || td->terminate)
1756 if (!o->do_verify ||
1757 o->verify == VERIFY_NONE ||
1758 td_ioengine_flagged(td, FIO_UNIDIR))
1761 clear_io_state(td, 0);
1763 fio_gettime(&td->start, NULL);
1765 do_verify(td, verify_bytes);
1768 * See comment further up for why this is done here.
1770 check_update_rusage(td);
1772 fio_mutex_down(stat_mutex);
1773 update_runtime(td, elapsed_us, DDIR_READ);
1774 fio_gettime(&td->start, NULL);
1775 fio_mutex_up(stat_mutex);
1777 if (td->error || td->terminate)
1781 td_set_runstate(td, TD_FINISHING);
1783 update_rusage_stat(td);
1784 td->ts.total_run_time = mtime_since_now(&td->epoch);
1785 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1786 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1787 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1789 if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
1790 (td->o.verify != VERIFY_NONE && td_write(td)))
1791 verify_save_state(td->thread_number);
1793 fio_unpin_memory(td);
1795 td_writeout_logs(td, true);
1797 iolog_compress_exit(td);
1798 rate_submit_exit(td);
1800 if (o->exec_postrun)
1801 exec_string(o, o->exec_postrun, (const char *)"postrun");
1803 if (exitall_on_terminate || (o->exitall_error && td->error))
1804 fio_terminate_threads(td->groupid);
1808 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1811 if (o->verify_async)
1812 verify_async_exit(td);
1814 close_and_free_files(td);
1817 cgroup_shutdown(td, &cgroup_mnt);
1818 verify_free_state(td);
1820 if (td->zone_state_index) {
1823 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1824 free(td->zone_state_index[i]);
1825 free(td->zone_state_index);
1826 td->zone_state_index = NULL;
1829 if (fio_option_is_set(o, cpumask)) {
1830 ret = fio_cpuset_exit(&o->cpumask);
1832 td_verror(td, ret, "fio_cpuset_exit");
1836 * do this very late, it will log file closing as well
1838 if (o->write_iolog_file)
1839 write_iolog_close(td);
1841 fio_mutex_remove(td->mutex);
1844 td_set_runstate(td, TD_EXITED);
1847 * Do this last after setting our runstate to exited, so we
1848 * know that the stat thread is signaled.
1850 check_update_rusage(td);
1853 return (void *) (uintptr_t) td->error;
1856 static void dump_td_info(struct thread_data *td)
1858 log_err("fio: job '%s' (state=%d) hasn't exited in %lu seconds, it "
1859 "appears to be stuck. Doing forceful exit of this job.\n",
1860 td->o.name, td->runstate,
1861 (unsigned long) time_since_now(&td->terminate_time));
1865 * Run over the job map and reap the threads that have exited, if any.
1867 static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1868 unsigned int *m_rate)
1870 struct thread_data *td;
1871 unsigned int cputhreads, realthreads, pending;
1875 * reap exited threads (TD_EXITED -> TD_REAPED)
1877 realthreads = pending = cputhreads = 0;
1878 for_each_td(td, i) {
1882 * ->io_ops is NULL for a thread that has closed its
1885 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1894 if (td->runstate == TD_REAPED)
1896 if (td->o.use_thread) {
1897 if (td->runstate == TD_EXITED) {
1898 td_set_runstate(td, TD_REAPED);
1905 if (td->runstate == TD_EXITED)
1909 * check if someone quit or got killed in an unusual way
1911 ret = waitpid(td->pid, &status, flags);
1913 if (errno == ECHILD) {
1914 log_err("fio: pid=%d disappeared %d\n",
1915 (int) td->pid, td->runstate);
1917 td_set_runstate(td, TD_REAPED);
1921 } else if (ret == td->pid) {
1922 if (WIFSIGNALED(status)) {
1923 int sig = WTERMSIG(status);
1925 if (sig != SIGTERM && sig != SIGUSR2)
1926 log_err("fio: pid=%d, got signal=%d\n",
1927 (int) td->pid, sig);
1929 td_set_runstate(td, TD_REAPED);
1932 if (WIFEXITED(status)) {
1933 if (WEXITSTATUS(status) && !td->error)
1934 td->error = WEXITSTATUS(status);
1936 td_set_runstate(td, TD_REAPED);
1942 * If the job is stuck, do a forceful timeout of it and
1945 if (td->terminate &&
1946 td->runstate < TD_FSYNCING &&
1947 time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) {
1949 td_set_runstate(td, TD_REAPED);
1954 * thread is not dead, continue
1960 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1961 (*t_rate) -= ddir_rw_sum(td->o.rate);
1968 done_secs += mtime_since_now(&td->epoch) / 1000;
1969 profile_td_exit(td);
1972 if (*nr_running == cputhreads && !pending && realthreads)
1973 fio_terminate_threads(TERMINATE_ALL);
1976 static bool __check_trigger_file(void)
1983 if (stat(trigger_file, &sb))
1986 if (unlink(trigger_file) < 0)
1987 log_err("fio: failed to unlink %s: %s\n", trigger_file,
1993 static bool trigger_timedout(void)
1995 if (trigger_timeout)
1996 return time_since_genesis() >= trigger_timeout;
2001 void exec_trigger(const char *cmd)
2010 log_err("fio: failed executing %s trigger\n", cmd);
2013 void check_trigger_file(void)
2015 if (__check_trigger_file() || trigger_timedout()) {
2017 fio_clients_send_trigger(trigger_remote_cmd);
2019 verify_save_state(IO_LIST_ALL);
2020 fio_terminate_threads(TERMINATE_ALL);
2021 exec_trigger(trigger_cmd);
2026 static int fio_verify_load_state(struct thread_data *td)
2030 if (!td->o.verify_state)
2036 ret = fio_server_get_verify_state(td->o.name,
2037 td->thread_number - 1, &data);
2039 verify_assign_state(td, data);
2041 ret = verify_load_state(td, "local");
2046 static void do_usleep(unsigned int usecs)
2048 check_for_running_stats();
2049 check_trigger_file();
2053 static bool check_mount_writes(struct thread_data *td)
2058 if (!td_write(td) || td->o.allow_mounted_write)
2061 for_each_file(td, f, i) {
2062 if (f->filetype != FIO_TYPE_BD)
2064 if (device_is_mounted(f->file_name))
2070 log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.", f->file_name);
2074 static bool waitee_running(struct thread_data *me)
2076 const char *waitee = me->o.wait_for;
2077 const char *self = me->o.name;
2078 struct thread_data *td;
2084 for_each_td(td, i) {
2085 if (!strcmp(td->o.name, self) || strcmp(td->o.name, waitee))
2088 if (td->runstate < TD_EXITED) {
2089 dprint(FD_PROCESS, "%s fenced by %s(%s)\n",
2091 runstate_to_name(td->runstate));
2096 dprint(FD_PROCESS, "%s: %s completed, can run\n", self, waitee);
2101 * Main function for kicking off and reaping jobs, as needed.
2103 static void run_threads(struct sk_out *sk_out)
2105 struct thread_data *td;
2106 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
2109 if (fio_gtod_offload && fio_start_gtod_thread())
2112 fio_idle_prof_init();
2116 nr_thread = nr_process = 0;
2117 for_each_td(td, i) {
2118 if (check_mount_writes(td))
2120 if (td->o.use_thread)
2126 if (output_format & FIO_OUTPUT_NORMAL) {
2127 log_info("Starting ");
2129 log_info("%d thread%s", nr_thread,
2130 nr_thread > 1 ? "s" : "");
2134 log_info("%d process%s", nr_process,
2135 nr_process > 1 ? "es" : "");
2141 todo = thread_number;
2144 m_rate = t_rate = 0;
2146 for_each_td(td, i) {
2147 print_status_init(td->thread_number - 1);
2149 if (!td->o.create_serialize)
2152 if (fio_verify_load_state(td))
2156 * do file setup here so it happens sequentially,
2157 * we don't want X number of threads getting their
2158 * client data interspersed on disk
2160 if (setup_files(td)) {
2164 log_err("fio: pid=%d, err=%d/%s\n",
2165 (int) td->pid, td->error, td->verror);
2166 td_set_runstate(td, TD_REAPED);
2173 * for sharing to work, each job must always open
2174 * its own files. so close them, if we opened them
2177 for_each_file(td, f, j) {
2178 if (fio_file_open(f))
2179 td_io_close_file(td, f);
2184 /* start idle threads before io threads start to run */
2185 fio_idle_prof_start();
2190 struct thread_data *map[REAL_MAX_JOBS];
2191 struct timeval this_start;
2192 int this_jobs = 0, left;
2193 struct fork_data *fd;
2196 * create threads (TD_NOT_CREATED -> TD_CREATED)
2198 for_each_td(td, i) {
2199 if (td->runstate != TD_NOT_CREATED)
2203 * never got a chance to start, killed by other
2204 * thread for some reason
2206 if (td->terminate) {
2211 if (td->o.start_delay) {
2212 spent = utime_since_genesis();
2214 if (td->o.start_delay > spent)
2218 if (td->o.stonewall && (nr_started || nr_running)) {
2219 dprint(FD_PROCESS, "%s: stonewall wait\n",
2224 if (waitee_running(td)) {
2225 dprint(FD_PROCESS, "%s: waiting for %s\n",
2226 td->o.name, td->o.wait_for);
2232 td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
2233 td->update_rusage = 0;
2236 * Set state to created. Thread will transition
2237 * to TD_INITIALIZED when it's done setting up.
2239 td_set_runstate(td, TD_CREATED);
2240 map[this_jobs++] = td;
2243 fd = calloc(1, sizeof(*fd));
2245 fd->sk_out = sk_out;
2247 if (td->o.use_thread) {
2250 dprint(FD_PROCESS, "will pthread_create\n");
2251 ret = pthread_create(&td->thread, NULL,
2254 log_err("pthread_create: %s\n",
2260 ret = pthread_detach(td->thread);
2262 log_err("pthread_detach: %s",
2266 dprint(FD_PROCESS, "will fork\n");
2271 ret = (int)(uintptr_t)thread_main(fd);
2273 } else if (i == fio_debug_jobno)
2274 *fio_debug_jobp = pid;
2276 dprint(FD_MUTEX, "wait on startup_mutex\n");
2277 if (fio_mutex_down_timeout(startup_mutex, 10000)) {
2278 log_err("fio: job startup hung? exiting.\n");
2279 fio_terminate_threads(TERMINATE_ALL);
2284 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2288 * Wait for the started threads to transition to
2291 fio_gettime(&this_start, NULL);
2293 while (left && !fio_abort) {
2294 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
2299 for (i = 0; i < this_jobs; i++) {
2303 if (td->runstate == TD_INITIALIZED) {
2306 } else if (td->runstate >= TD_EXITED) {
2310 nr_running++; /* work-around... */
2316 log_err("fio: %d job%s failed to start\n", left,
2317 left > 1 ? "s" : "");
2318 for (i = 0; i < this_jobs; i++) {
2322 kill(td->pid, SIGTERM);
2328 * start created threads (TD_INITIALIZED -> TD_RUNNING).
2330 for_each_td(td, i) {
2331 if (td->runstate != TD_INITIALIZED)
2334 if (in_ramp_time(td))
2335 td_set_runstate(td, TD_RAMP);
2337 td_set_runstate(td, TD_RUNNING);
2340 m_rate += ddir_rw_sum(td->o.ratemin);
2341 t_rate += ddir_rw_sum(td->o.rate);
2343 fio_mutex_up(td->mutex);
2346 reap_threads(&nr_running, &t_rate, &m_rate);
2352 while (nr_running) {
2353 reap_threads(&nr_running, &t_rate, &m_rate);
2357 fio_idle_prof_stop();
2362 static void free_disk_util(void)
2364 disk_util_prune_entries();
2365 helper_thread_destroy();
2368 int fio_backend(struct sk_out *sk_out)
2370 struct thread_data *td;
2374 if (load_profile(exec_profile))
2377 exec_profile = NULL;
2383 struct log_params p = {
2384 .log_type = IO_LOG_TYPE_BW,
2387 setup_log(&agg_io_log[DDIR_READ], &p, "agg-read_bw.log");
2388 setup_log(&agg_io_log[DDIR_WRITE], &p, "agg-write_bw.log");
2389 setup_log(&agg_io_log[DDIR_TRIM], &p, "agg-trim_bw.log");
2392 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
2393 if (startup_mutex == NULL)
2398 helper_thread_create(startup_mutex, sk_out);
2400 cgroup_list = smalloc(sizeof(*cgroup_list));
2401 INIT_FLIST_HEAD(cgroup_list);
2403 run_threads(sk_out);
2405 helper_thread_exit();
2410 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2411 struct io_log *log = agg_io_log[i];
2413 flush_log(log, false);
2419 for_each_td(td, i) {
2420 fio_options_free(td);
2421 if (td->rusage_sem) {
2422 fio_mutex_remove(td->rusage_sem);
2423 td->rusage_sem = NULL;
2428 cgroup_kill(cgroup_list);
2432 fio_mutex_remove(startup_mutex);