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"
61 static pthread_t helper_thread;
62 static pthread_mutex_t helper_lock;
63 pthread_cond_t helper_cond;
64 int helper_do_stat = 0;
66 static struct fio_mutex *startup_mutex;
67 static struct flist_head *cgroup_list;
68 static char *cgroup_mnt;
69 static int exit_value;
70 static volatile int fio_abort;
71 static unsigned int nr_process = 0;
72 static unsigned int nr_thread = 0;
74 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
77 unsigned int thread_number = 0;
78 unsigned int stat_number = 0;
81 unsigned long done_secs = 0;
82 volatile int helper_exit = 0;
84 #define PAGE_ALIGN(buf) \
85 (char *) (((uintptr_t) (buf) + page_mask) & ~page_mask)
87 #define JOB_START_TIMEOUT (5 * 1000)
89 static void sig_int(int sig)
93 fio_server_got_signal(sig);
95 log_info("\nfio: terminating on signal %d\n", sig);
100 fio_terminate_threads(TERMINATE_ALL);
104 void sig_show_status(int sig)
106 show_running_run_stats();
109 static void set_sig_handlers(void)
111 struct sigaction act;
113 memset(&act, 0, sizeof(act));
114 act.sa_handler = sig_int;
115 act.sa_flags = SA_RESTART;
116 sigaction(SIGINT, &act, NULL);
118 memset(&act, 0, sizeof(act));
119 act.sa_handler = sig_int;
120 act.sa_flags = SA_RESTART;
121 sigaction(SIGTERM, &act, NULL);
123 /* Windows uses SIGBREAK as a quit signal from other applications */
125 memset(&act, 0, sizeof(act));
126 act.sa_handler = sig_int;
127 act.sa_flags = SA_RESTART;
128 sigaction(SIGBREAK, &act, NULL);
131 memset(&act, 0, sizeof(act));
132 act.sa_handler = sig_show_status;
133 act.sa_flags = SA_RESTART;
134 sigaction(SIGUSR1, &act, NULL);
137 memset(&act, 0, sizeof(act));
138 act.sa_handler = sig_int;
139 act.sa_flags = SA_RESTART;
140 sigaction(SIGPIPE, &act, NULL);
145 * Check if we are above the minimum rate given.
147 static bool __check_min_rate(struct thread_data *td, struct timeval *now,
150 unsigned long long bytes = 0;
151 unsigned long iops = 0;
154 unsigned int ratemin = 0;
155 unsigned int rate_iops = 0;
156 unsigned int rate_iops_min = 0;
158 assert(ddir_rw(ddir));
160 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
164 * allow a 2 second settle period in the beginning
166 if (mtime_since(&td->start, now) < 2000)
169 iops += td->this_io_blocks[ddir];
170 bytes += td->this_io_bytes[ddir];
171 ratemin += td->o.ratemin[ddir];
172 rate_iops += td->o.rate_iops[ddir];
173 rate_iops_min += td->o.rate_iops_min[ddir];
176 * if rate blocks is set, sample is running
178 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
179 spent = mtime_since(&td->lastrate[ddir], now);
180 if (spent < td->o.ratecycle)
183 if (td->o.rate[ddir] || td->o.ratemin[ddir]) {
185 * check bandwidth specified rate
187 if (bytes < td->rate_bytes[ddir]) {
188 log_err("%s: min rate %u not met\n", td->o.name,
193 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
197 if (rate < ratemin ||
198 bytes < td->rate_bytes[ddir]) {
199 log_err("%s: min rate %u not met, got"
200 " %luKB/sec\n", td->o.name,
207 * checks iops specified rate
209 if (iops < rate_iops) {
210 log_err("%s: min iops rate %u not met\n",
211 td->o.name, rate_iops);
215 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
219 if (rate < rate_iops_min ||
220 iops < td->rate_blocks[ddir]) {
221 log_err("%s: min iops rate %u not met,"
222 " got %lu\n", td->o.name,
223 rate_iops_min, rate);
230 td->rate_bytes[ddir] = bytes;
231 td->rate_blocks[ddir] = iops;
232 memcpy(&td->lastrate[ddir], now, sizeof(*now));
236 static bool check_min_rate(struct thread_data *td, struct timeval *now)
240 if (td->bytes_done[DDIR_READ])
241 ret |= __check_min_rate(td, now, DDIR_READ);
242 if (td->bytes_done[DDIR_WRITE])
243 ret |= __check_min_rate(td, now, DDIR_WRITE);
244 if (td->bytes_done[DDIR_TRIM])
245 ret |= __check_min_rate(td, now, DDIR_TRIM);
251 * When job exits, we can cancel the in-flight IO if we are using async
252 * io. Attempt to do so.
254 static void cleanup_pending_aio(struct thread_data *td)
259 * get immediately available events, if any
261 r = io_u_queued_complete(td, 0);
266 * now cancel remaining active events
268 if (td->io_ops->cancel) {
272 io_u_qiter(&td->io_u_all, io_u, i) {
273 if (io_u->flags & IO_U_F_FLIGHT) {
274 r = td->io_ops->cancel(td, io_u);
282 r = io_u_queued_complete(td, td->cur_depth);
286 * Helper to handle the final sync of a file. Works just like the normal
287 * io path, just does everything sync.
289 static bool fio_io_sync(struct thread_data *td, struct fio_file *f)
291 struct io_u *io_u = __get_io_u(td);
297 io_u->ddir = DDIR_SYNC;
300 if (td_io_prep(td, io_u)) {
306 ret = td_io_queue(td, io_u);
308 td_verror(td, io_u->error, "td_io_queue");
311 } else if (ret == FIO_Q_QUEUED) {
312 if (td_io_commit(td))
314 if (io_u_queued_complete(td, 1) < 0)
316 } else if (ret == FIO_Q_COMPLETED) {
318 td_verror(td, io_u->error, "td_io_queue");
322 if (io_u_sync_complete(td, io_u) < 0)
324 } else if (ret == FIO_Q_BUSY) {
325 if (td_io_commit(td))
333 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
337 if (fio_file_open(f))
338 return fio_io_sync(td, f);
340 if (td_io_open_file(td, f))
343 ret = fio_io_sync(td, f);
344 td_io_close_file(td, f);
348 static inline void __update_tv_cache(struct thread_data *td)
350 fio_gettime(&td->tv_cache, NULL);
353 static inline void update_tv_cache(struct thread_data *td)
355 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
356 __update_tv_cache(td);
359 static inline bool runtime_exceeded(struct thread_data *td, struct timeval *t)
361 if (in_ramp_time(td))
365 if (utime_since(&td->epoch, t) >= td->o.timeout)
372 * We need to update the runtime consistently in ms, but keep a running
373 * tally of the current elapsed time in microseconds for sub millisecond
376 static inline void update_runtime(struct thread_data *td,
377 unsigned long long *elapsed_us,
378 const enum fio_ddir ddir)
380 if (ddir == DDIR_WRITE && td_write(td) && td->o.verify_only)
383 td->ts.runtime[ddir] -= (elapsed_us[ddir] + 999) / 1000;
384 elapsed_us[ddir] += utime_since_now(&td->start);
385 td->ts.runtime[ddir] += (elapsed_us[ddir] + 999) / 1000;
388 static bool break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
393 if (ret < 0 || td->error) {
395 enum error_type_bit eb;
400 eb = td_error_type(ddir, err);
401 if (!(td->o.continue_on_error & (1 << eb)))
404 if (td_non_fatal_error(td, eb, err)) {
406 * Continue with the I/Os in case of
409 update_error_count(td, err);
413 } else if (td->o.fill_device && err == ENOSPC) {
415 * We expect to hit this error if
416 * fill_device option is set.
419 fio_mark_td_terminate(td);
423 * Stop the I/O in case of a fatal
426 update_error_count(td, err);
434 static void check_update_rusage(struct thread_data *td)
436 if (td->update_rusage) {
437 td->update_rusage = 0;
438 update_rusage_stat(td);
439 fio_mutex_up(td->rusage_sem);
443 static int wait_for_completions(struct thread_data *td, struct timeval *time)
445 const int full = queue_full(td);
450 * if the queue is full, we MUST reap at least 1 event
452 min_evts = min(td->o.iodepth_batch_complete_min, td->cur_depth);
453 if ((full && !min_evts) || !td->o.iodepth_batch_complete_min)
456 if (time && (__should_check_rate(td, DDIR_READ) ||
457 __should_check_rate(td, DDIR_WRITE) ||
458 __should_check_rate(td, DDIR_TRIM)))
459 fio_gettime(time, NULL);
462 ret = io_u_queued_complete(td, min_evts);
465 } while (full && (td->cur_depth > td->o.iodepth_low));
470 int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
471 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
472 struct timeval *comp_time)
477 case FIO_Q_COMPLETED:
480 clear_io_u(td, io_u);
481 } else if (io_u->resid) {
482 int bytes = io_u->xfer_buflen - io_u->resid;
483 struct fio_file *f = io_u->file;
486 *bytes_issued += bytes;
489 trim_io_piece(td, io_u);
496 unlog_io_piece(td, io_u);
497 td_verror(td, EIO, "full resid");
502 io_u->xfer_buflen = io_u->resid;
503 io_u->xfer_buf += bytes;
504 io_u->offset += bytes;
506 if (ddir_rw(io_u->ddir))
507 td->ts.short_io_u[io_u->ddir]++;
510 if (io_u->offset == f->real_file_size)
513 requeue_io_u(td, &io_u);
516 if (comp_time && (__should_check_rate(td, DDIR_READ) ||
517 __should_check_rate(td, DDIR_WRITE) ||
518 __should_check_rate(td, DDIR_TRIM)))
519 fio_gettime(comp_time, NULL);
521 *ret = io_u_sync_complete(td, io_u);
527 * when doing I/O (not when verifying),
528 * check for any errors that are to be ignored
536 * if the engine doesn't have a commit hook,
537 * the io_u is really queued. if it does have such
538 * a hook, it has to call io_u_queued() itself.
540 if (td->io_ops->commit == NULL)
541 io_u_queued(td, io_u);
543 *bytes_issued += io_u->xfer_buflen;
547 unlog_io_piece(td, io_u);
548 requeue_io_u(td, &io_u);
549 ret2 = td_io_commit(td);
555 td_verror(td, -(*ret), "td_io_queue");
559 if (break_on_this_error(td, ddir, ret))
565 static inline bool io_in_polling(struct thread_data *td)
567 return !td->o.iodepth_batch_complete_min &&
568 !td->o.iodepth_batch_complete_max;
572 * The main verify engine. Runs over the writes we previously submitted,
573 * reads the blocks back in, and checks the crc/md5 of the data.
575 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
582 dprint(FD_VERIFY, "starting loop\n");
585 * sync io first and invalidate cache, to make sure we really
588 for_each_file(td, f, i) {
589 if (!fio_file_open(f))
591 if (fio_io_sync(td, f))
593 if (file_invalidate_cache(td, f))
597 check_update_rusage(td);
602 td_set_runstate(td, TD_VERIFYING);
605 while (!td->terminate) {
610 check_update_rusage(td);
612 if (runtime_exceeded(td, &td->tv_cache)) {
613 __update_tv_cache(td);
614 if (runtime_exceeded(td, &td->tv_cache)) {
615 fio_mark_td_terminate(td);
620 if (flow_threshold_exceeded(td))
623 if (!td->o.experimental_verify) {
624 io_u = __get_io_u(td);
628 if (get_next_verify(td, io_u)) {
633 if (td_io_prep(td, io_u)) {
638 if (ddir_rw_sum(td->bytes_done) + td->o.rw_min_bs > verify_bytes)
641 while ((io_u = get_io_u(td)) != NULL) {
649 * We are only interested in the places where
650 * we wrote or trimmed IOs. Turn those into
651 * reads for verification purposes.
653 if (io_u->ddir == DDIR_READ) {
655 * Pretend we issued it for rwmix
658 td->io_issues[DDIR_READ]++;
661 } else if (io_u->ddir == DDIR_TRIM) {
662 io_u->ddir = DDIR_READ;
663 io_u_set(io_u, IO_U_F_TRIMMED);
665 } else if (io_u->ddir == DDIR_WRITE) {
666 io_u->ddir = DDIR_READ;
678 if (verify_state_should_stop(td, io_u)) {
683 if (td->o.verify_async)
684 io_u->end_io = verify_io_u_async;
686 io_u->end_io = verify_io_u;
689 if (!td->o.disable_slat)
690 fio_gettime(&io_u->start_time, NULL);
692 ret = td_io_queue(td, io_u);
694 if (io_queue_event(td, io_u, &ret, ddir, NULL, 1, NULL))
698 * if we can queue more, do so. but check if there are
699 * completed io_u's first. Note that we can get BUSY even
700 * without IO queued, if the system is resource starved.
703 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
704 if (full || io_in_polling(td))
705 ret = wait_for_completions(td, NULL);
711 check_update_rusage(td);
714 min_events = td->cur_depth;
717 ret = io_u_queued_complete(td, min_events);
719 cleanup_pending_aio(td);
721 td_set_runstate(td, TD_RUNNING);
723 dprint(FD_VERIFY, "exiting loop\n");
726 static bool exceeds_number_ios(struct thread_data *td)
728 unsigned long long number_ios;
730 if (!td->o.number_ios)
733 number_ios = ddir_rw_sum(td->io_blocks);
734 number_ios += td->io_u_queued + td->io_u_in_flight;
736 return number_ios >= (td->o.number_ios * td->loops);
739 static bool io_issue_bytes_exceeded(struct thread_data *td)
741 unsigned long long bytes, limit;
744 bytes = td->io_issue_bytes[DDIR_READ] + td->io_issue_bytes[DDIR_WRITE];
745 else if (td_write(td))
746 bytes = td->io_issue_bytes[DDIR_WRITE];
747 else if (td_read(td))
748 bytes = td->io_issue_bytes[DDIR_READ];
750 bytes = td->io_issue_bytes[DDIR_TRIM];
753 limit = td->o.io_limit;
758 return bytes >= limit || exceeds_number_ios(td);
761 static bool io_complete_bytes_exceeded(struct thread_data *td)
763 unsigned long long bytes, limit;
766 bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE];
767 else if (td_write(td))
768 bytes = td->this_io_bytes[DDIR_WRITE];
769 else if (td_read(td))
770 bytes = td->this_io_bytes[DDIR_READ];
772 bytes = td->this_io_bytes[DDIR_TRIM];
775 limit = td->o.io_limit;
780 return bytes >= limit || exceeds_number_ios(td);
784 * used to calculate the next io time for rate control
787 static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
789 uint64_t secs, remainder, bps, bytes, iops;
791 assert(!(td->flags & TD_F_CHILD));
792 bytes = td->rate_io_issue_bytes[ddir];
793 bps = td->rate_bps[ddir];
795 if (td->o.rate_process == RATE_PROCESS_POISSON) {
797 iops = bps / td->o.bs[ddir];
798 val = (int64_t) (1000000 / iops) *
799 -logf(__rand_0_1(&td->poisson_state));
801 dprint(FD_RATE, "poisson rate iops=%llu\n",
802 (unsigned long long) 1000000 / val);
804 td->last_usec += val;
805 return td->last_usec;
808 remainder = bytes % bps;
809 return remainder * 1000000 / bps + secs * 1000000;
816 * Main IO worker function. It retrieves io_u's to process and queues
817 * and reaps them, checking for rate and errors along the way.
819 * Returns number of bytes written and trimmed.
821 static void do_io(struct thread_data *td, uint64_t *bytes_done)
825 uint64_t total_bytes, bytes_issued = 0;
827 for (i = 0; i < DDIR_RWDIR_CNT; i++)
828 bytes_done[i] = td->bytes_done[i];
830 if (in_ramp_time(td))
831 td_set_runstate(td, TD_RAMP);
833 td_set_runstate(td, TD_RUNNING);
837 total_bytes = td->o.size;
839 * Allow random overwrite workloads to write up to io_limit
840 * before starting verification phase as 'size' doesn't apply.
842 if (td_write(td) && td_random(td) && td->o.norandommap)
843 total_bytes = max(total_bytes, (uint64_t) td->o.io_limit);
845 * If verify_backlog is enabled, we'll run the verify in this
846 * handler as well. For that case, we may need up to twice the
849 if (td->o.verify != VERIFY_NONE &&
850 (td_write(td) && td->o.verify_backlog))
851 total_bytes += td->o.size;
853 /* In trimwrite mode, each byte is trimmed and then written, so
854 * allow total_bytes to be twice as big */
855 if (td_trimwrite(td))
856 total_bytes += td->total_io_size;
858 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
859 (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) ||
861 struct timeval comp_time;
866 check_update_rusage(td);
868 if (td->terminate || td->done)
873 if (runtime_exceeded(td, &td->tv_cache)) {
874 __update_tv_cache(td);
875 if (runtime_exceeded(td, &td->tv_cache)) {
876 fio_mark_td_terminate(td);
881 if (flow_threshold_exceeded(td))
884 if (!td->o.time_based && bytes_issued >= total_bytes)
888 if (IS_ERR_OR_NULL(io_u)) {
889 int err = PTR_ERR(io_u);
896 if (td->o.latency_target)
904 * Add verification end_io handler if:
905 * - Asked to verify (!td_rw(td))
906 * - Or the io_u is from our verify list (mixed write/ver)
908 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
909 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
911 if (!td->o.verify_pattern_bytes) {
912 io_u->rand_seed = __rand(&td->verify_state);
913 if (sizeof(int) != sizeof(long *))
914 io_u->rand_seed *= __rand(&td->verify_state);
917 if (verify_state_should_stop(td, io_u)) {
922 if (td->o.verify_async)
923 io_u->end_io = verify_io_u_async;
925 io_u->end_io = verify_io_u;
926 td_set_runstate(td, TD_VERIFYING);
927 } else if (in_ramp_time(td))
928 td_set_runstate(td, TD_RAMP);
930 td_set_runstate(td, TD_RUNNING);
933 * Always log IO before it's issued, so we know the specific
934 * order of it. The logged unit will track when the IO has
937 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
939 td->o.verify != VERIFY_NONE &&
940 !td->o.experimental_verify)
941 log_io_piece(td, io_u);
943 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
944 const unsigned long blen = io_u->xfer_buflen;
945 const enum fio_ddir ddir = acct_ddir(io_u);
950 workqueue_enqueue(&td->io_wq, &io_u->work);
954 td->io_issues[ddir]++;
955 td->io_issue_bytes[ddir] += blen;
956 td->rate_io_issue_bytes[ddir] += blen;
959 if (should_check_rate(td))
960 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
963 ret = td_io_queue(td, io_u);
965 if (should_check_rate(td))
966 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
968 if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
972 * See if we need to complete some commands. Note that
973 * we can get BUSY even without IO queued, if the
974 * system is resource starved.
977 full = queue_full(td) ||
978 (ret == FIO_Q_BUSY && td->cur_depth);
979 if (full || io_in_polling(td))
980 ret = wait_for_completions(td, &comp_time);
984 if (!ddir_rw_sum(td->bytes_done) &&
985 !(td->io_ops->flags & FIO_NOIO))
988 if (!in_ramp_time(td) && should_check_rate(td)) {
989 if (check_min_rate(td, &comp_time)) {
990 if (exitall_on_terminate || td->o.exitall_error)
991 fio_terminate_threads(td->groupid);
992 td_verror(td, EIO, "check_min_rate");
996 if (!in_ramp_time(td) && td->o.latency_target)
997 lat_target_check(td);
999 if (td->o.thinktime) {
1000 unsigned long long b;
1002 b = ddir_rw_sum(td->io_blocks);
1003 if (!(b % td->o.thinktime_blocks)) {
1008 if (td->o.thinktime_spin)
1009 usec_spin(td->o.thinktime_spin);
1011 left = td->o.thinktime - td->o.thinktime_spin;
1013 usec_sleep(td, left);
1018 check_update_rusage(td);
1020 if (td->trim_entries)
1021 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
1023 if (td->o.fill_device && td->error == ENOSPC) {
1025 fio_mark_td_terminate(td);
1030 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1031 workqueue_flush(&td->io_wq);
1037 ret = io_u_queued_complete(td, i);
1038 if (td->o.fill_device && td->error == ENOSPC)
1042 if (should_fsync(td) && td->o.end_fsync) {
1043 td_set_runstate(td, TD_FSYNCING);
1045 for_each_file(td, f, i) {
1046 if (!fio_file_fsync(td, f))
1049 log_err("fio: end_fsync failed for file %s\n",
1054 cleanup_pending_aio(td);
1057 * stop job if we failed doing any IO
1059 if (!ddir_rw_sum(td->this_io_bytes))
1062 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1063 bytes_done[i] = td->bytes_done[i] - bytes_done[i];
1066 static void cleanup_io_u(struct thread_data *td)
1070 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
1072 if (td->io_ops->io_u_free)
1073 td->io_ops->io_u_free(td, io_u);
1075 fio_memfree(io_u, sizeof(*io_u));
1080 io_u_rexit(&td->io_u_requeues);
1081 io_u_qexit(&td->io_u_freelist);
1082 io_u_qexit(&td->io_u_all);
1084 if (td->last_write_comp)
1085 sfree(td->last_write_comp);
1088 static int init_io_u(struct thread_data *td)
1091 unsigned int max_bs, min_write;
1092 int cl_align, i, max_units;
1093 int data_xfer = 1, err;
1096 max_units = td->o.iodepth;
1097 max_bs = td_max_bs(td);
1098 min_write = td->o.min_bs[DDIR_WRITE];
1099 td->orig_buffer_size = (unsigned long long) max_bs
1100 * (unsigned long long) max_units;
1102 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
1106 err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
1107 err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
1108 err += io_u_qinit(&td->io_u_all, td->o.iodepth);
1111 log_err("fio: failed setting up IO queues\n");
1116 * if we may later need to do address alignment, then add any
1117 * possible adjustment here so that we don't cause a buffer
1118 * overflow later. this adjustment may be too much if we get
1119 * lucky and the allocator gives us an aligned address.
1121 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1122 (td->io_ops->flags & FIO_RAWIO))
1123 td->orig_buffer_size += page_mask + td->o.mem_align;
1125 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1128 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1129 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1132 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1133 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1137 if (data_xfer && allocate_io_mem(td))
1140 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1141 (td->io_ops->flags & FIO_RAWIO))
1142 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
1144 p = td->orig_buffer;
1146 cl_align = os_cache_line_size();
1148 for (i = 0; i < max_units; i++) {
1154 ptr = fio_memalign(cl_align, sizeof(*io_u));
1156 log_err("fio: unable to allocate aligned memory\n");
1161 memset(io_u, 0, sizeof(*io_u));
1162 INIT_FLIST_HEAD(&io_u->verify_list);
1163 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1167 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1170 io_u_fill_buffer(td, io_u, min_write, max_bs);
1171 if (td_write(td) && td->o.verify_pattern_bytes) {
1173 * Fill the buffer with the pattern if we are
1174 * going to be doing writes.
1176 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1181 io_u->flags = IO_U_F_FREE;
1182 io_u_qpush(&td->io_u_freelist, io_u);
1185 * io_u never leaves this stack, used for iteration of all
1188 io_u_qpush(&td->io_u_all, io_u);
1190 if (td->io_ops->io_u_init) {
1191 int ret = td->io_ops->io_u_init(td, io_u);
1194 log_err("fio: failed to init engine data: %d\n", ret);
1202 if (td->o.verify != VERIFY_NONE) {
1203 td->last_write_comp = scalloc(max_units, sizeof(uint64_t));
1204 if (!td->last_write_comp) {
1205 log_err("fio: failed to alloc write comp data\n");
1213 static int switch_ioscheduler(struct thread_data *td)
1215 char tmp[256], tmp2[128];
1219 if (td->io_ops->flags & FIO_DISKLESSIO)
1222 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
1224 f = fopen(tmp, "r+");
1226 if (errno == ENOENT) {
1227 log_err("fio: os or kernel doesn't support IO scheduler"
1231 td_verror(td, errno, "fopen iosched");
1238 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1239 if (ferror(f) || ret != 1) {
1240 td_verror(td, errno, "fwrite");
1248 * Read back and check that the selected scheduler is now the default.
1250 memset(tmp, 0, sizeof(tmp));
1251 ret = fread(tmp, sizeof(tmp), 1, f);
1252 if (ferror(f) || ret < 0) {
1253 td_verror(td, errno, "fread");
1258 * either a list of io schedulers or "none\n" is expected.
1260 tmp[strlen(tmp) - 1] = '\0';
1263 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1264 if (!strstr(tmp, tmp2)) {
1265 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1266 td_verror(td, EINVAL, "iosched_switch");
1275 static bool keep_running(struct thread_data *td)
1277 unsigned long long limit;
1281 if (td->o.time_based)
1287 if (exceeds_number_ios(td))
1291 limit = td->o.io_limit;
1295 if (limit != -1ULL && ddir_rw_sum(td->io_bytes) < limit) {
1299 * If the difference is less than the minimum IO size, we
1302 diff = limit - ddir_rw_sum(td->io_bytes);
1303 if (diff < td_max_bs(td))
1306 if (fio_files_done(td) && !td->o.io_limit)
1315 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1317 size_t newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1321 str = malloc(newlen);
1322 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1324 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1327 log_err("fio: exec of cmd <%s> failed\n", str);
1334 * Dry run to compute correct state of numberio for verification.
1336 static uint64_t do_dry_run(struct thread_data *td)
1338 td_set_runstate(td, TD_RUNNING);
1340 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1341 (!flist_empty(&td->trim_list)) || !io_complete_bytes_exceeded(td)) {
1345 if (td->terminate || td->done)
1348 io_u = get_io_u(td);
1352 io_u_set(io_u, IO_U_F_FLIGHT);
1355 if (ddir_rw(acct_ddir(io_u)))
1356 td->io_issues[acct_ddir(io_u)]++;
1357 if (ddir_rw(io_u->ddir)) {
1358 io_u_mark_depth(td, 1);
1359 td->ts.total_io_u[io_u->ddir]++;
1362 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1364 td->o.verify != VERIFY_NONE &&
1365 !td->o.experimental_verify)
1366 log_io_piece(td, io_u);
1368 ret = io_u_sync_complete(td, io_u);
1372 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1376 struct thread_data *td;
1377 struct sk_out *sk_out;
1381 * Entry point for the thread based jobs. The process based jobs end up
1382 * here as well, after a little setup.
1384 static void *thread_main(void *data)
1386 struct fork_data *fd = data;
1387 unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
1388 struct thread_data *td = fd->td;
1389 struct thread_options *o = &td->o;
1390 struct sk_out *sk_out = fd->sk_out;
1391 pthread_condattr_t attr;
1395 sk_out_assign(sk_out);
1398 if (!o->use_thread) {
1404 fio_local_clock_init(o->use_thread);
1406 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1409 fio_server_send_start(td);
1411 INIT_FLIST_HEAD(&td->io_log_list);
1412 INIT_FLIST_HEAD(&td->io_hist_list);
1413 INIT_FLIST_HEAD(&td->verify_list);
1414 INIT_FLIST_HEAD(&td->trim_list);
1415 INIT_FLIST_HEAD(&td->next_rand_list);
1416 pthread_mutex_init(&td->io_u_lock, NULL);
1417 td->io_hist_tree = RB_ROOT;
1419 pthread_condattr_init(&attr);
1420 pthread_cond_init(&td->verify_cond, &attr);
1421 pthread_cond_init(&td->free_cond, &attr);
1423 td_set_runstate(td, TD_INITIALIZED);
1424 dprint(FD_MUTEX, "up startup_mutex\n");
1425 fio_mutex_up(startup_mutex);
1426 dprint(FD_MUTEX, "wait on td->mutex\n");
1427 fio_mutex_down(td->mutex);
1428 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1431 * A new gid requires privilege, so we need to do this before setting
1434 if (o->gid != -1U && setgid(o->gid)) {
1435 td_verror(td, errno, "setgid");
1438 if (o->uid != -1U && setuid(o->uid)) {
1439 td_verror(td, errno, "setuid");
1444 * If we have a gettimeofday() thread, make sure we exclude that
1445 * thread from this job
1448 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1451 * Set affinity first, in case it has an impact on the memory
1454 if (fio_option_is_set(o, cpumask)) {
1455 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1456 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1458 log_err("fio: no CPUs set\n");
1459 log_err("fio: Try increasing number of available CPUs\n");
1460 td_verror(td, EINVAL, "cpus_split");
1464 ret = fio_setaffinity(td->pid, o->cpumask);
1466 td_verror(td, errno, "cpu_set_affinity");
1471 #ifdef CONFIG_LIBNUMA
1472 /* numa node setup */
1473 if (fio_option_is_set(o, numa_cpunodes) ||
1474 fio_option_is_set(o, numa_memnodes)) {
1475 struct bitmask *mask;
1477 if (numa_available() < 0) {
1478 td_verror(td, errno, "Does not support NUMA API\n");
1482 if (fio_option_is_set(o, numa_cpunodes)) {
1483 mask = numa_parse_nodestring(o->numa_cpunodes);
1484 ret = numa_run_on_node_mask(mask);
1485 numa_free_nodemask(mask);
1487 td_verror(td, errno, \
1488 "numa_run_on_node_mask failed\n");
1493 if (fio_option_is_set(o, numa_memnodes)) {
1495 if (o->numa_memnodes)
1496 mask = numa_parse_nodestring(o->numa_memnodes);
1498 switch (o->numa_mem_mode) {
1499 case MPOL_INTERLEAVE:
1500 numa_set_interleave_mask(mask);
1503 numa_set_membind(mask);
1506 numa_set_localalloc();
1508 case MPOL_PREFERRED:
1509 numa_set_preferred(o->numa_mem_prefer_node);
1517 numa_free_nodemask(mask);
1523 if (fio_pin_memory(td))
1527 * May alter parameters that init_io_u() will use, so we need to
1536 if (o->verify_async && verify_async_init(td))
1539 if (fio_option_is_set(o, ioprio) ||
1540 fio_option_is_set(o, ioprio_class)) {
1541 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1543 td_verror(td, errno, "ioprio_set");
1548 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1552 if (nice(o->nice) == -1 && errno != 0) {
1553 td_verror(td, errno, "nice");
1557 if (o->ioscheduler && switch_ioscheduler(td))
1560 if (!o->create_serialize && setup_files(td))
1566 if (init_random_map(td))
1569 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1573 if (pre_read_files(td) < 0)
1577 if (iolog_compress_init(td, sk_out))
1580 fio_verify_init(td);
1582 if (rate_submit_init(td, sk_out))
1585 fio_gettime(&td->epoch, NULL);
1586 fio_getrusage(&td->ru_start);
1587 memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
1588 memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
1590 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1591 o->ratemin[DDIR_TRIM]) {
1592 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1593 sizeof(td->bw_sample_time));
1594 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1595 sizeof(td->bw_sample_time));
1596 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1597 sizeof(td->bw_sample_time));
1601 while (keep_running(td)) {
1602 uint64_t verify_bytes;
1604 fio_gettime(&td->start, NULL);
1605 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1608 clear_io_state(td, 0);
1610 prune_io_piece_log(td);
1612 if (td->o.verify_only && (td_write(td) || td_rw(td)))
1613 verify_bytes = do_dry_run(td);
1615 uint64_t bytes_done[DDIR_RWDIR_CNT];
1617 do_io(td, bytes_done);
1619 if (!ddir_rw_sum(bytes_done)) {
1620 fio_mark_td_terminate(td);
1623 verify_bytes = bytes_done[DDIR_WRITE] +
1624 bytes_done[DDIR_TRIM];
1631 * Make sure we've successfully updated the rusage stats
1632 * before waiting on the stat mutex. Otherwise we could have
1633 * the stat thread holding stat mutex and waiting for
1634 * the rusage_sem, which would never get upped because
1635 * this thread is waiting for the stat mutex.
1637 check_update_rusage(td);
1639 fio_mutex_down(stat_mutex);
1640 if (td_read(td) && td->io_bytes[DDIR_READ])
1641 update_runtime(td, elapsed_us, DDIR_READ);
1642 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1643 update_runtime(td, elapsed_us, DDIR_WRITE);
1644 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1645 update_runtime(td, elapsed_us, DDIR_TRIM);
1646 fio_gettime(&td->start, NULL);
1647 fio_mutex_up(stat_mutex);
1649 if (td->error || td->terminate)
1652 if (!o->do_verify ||
1653 o->verify == VERIFY_NONE ||
1654 (td->io_ops->flags & FIO_UNIDIR))
1657 clear_io_state(td, 0);
1659 fio_gettime(&td->start, NULL);
1661 do_verify(td, verify_bytes);
1664 * See comment further up for why this is done here.
1666 check_update_rusage(td);
1668 fio_mutex_down(stat_mutex);
1669 update_runtime(td, elapsed_us, DDIR_READ);
1670 fio_gettime(&td->start, NULL);
1671 fio_mutex_up(stat_mutex);
1673 if (td->error || td->terminate)
1677 update_rusage_stat(td);
1678 td->ts.total_run_time = mtime_since_now(&td->epoch);
1679 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1680 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1681 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1683 if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
1684 (td->o.verify != VERIFY_NONE && td_write(td)))
1685 verify_save_state(td->thread_number);
1687 fio_unpin_memory(td);
1689 fio_writeout_logs(td);
1691 iolog_compress_exit(td);
1692 rate_submit_exit(td);
1694 if (o->exec_postrun)
1695 exec_string(o, o->exec_postrun, (const char *)"postrun");
1697 if (exitall_on_terminate || (o->exitall_error && td->error))
1698 fio_terminate_threads(td->groupid);
1702 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1705 if (o->verify_async)
1706 verify_async_exit(td);
1708 close_and_free_files(td);
1711 cgroup_shutdown(td, &cgroup_mnt);
1712 verify_free_state(td);
1714 if (td->zone_state_index) {
1717 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1718 free(td->zone_state_index[i]);
1719 free(td->zone_state_index);
1720 td->zone_state_index = NULL;
1723 if (fio_option_is_set(o, cpumask)) {
1724 ret = fio_cpuset_exit(&o->cpumask);
1726 td_verror(td, ret, "fio_cpuset_exit");
1730 * do this very late, it will log file closing as well
1732 if (o->write_iolog_file)
1733 write_iolog_close(td);
1735 fio_mutex_remove(td->mutex);
1738 td_set_runstate(td, TD_EXITED);
1741 * Do this last after setting our runstate to exited, so we
1742 * know that the stat thread is signaled.
1744 check_update_rusage(td);
1747 return (void *) (uintptr_t) td->error;
1752 * We cannot pass the td data into a forked process, so attach the td and
1753 * pass it to the thread worker.
1755 static int fork_main(struct sk_out *sk_out, int shmid, int offset)
1757 struct fork_data *fd;
1760 #if !defined(__hpux) && !defined(CONFIG_NO_SHM)
1761 data = shmat(shmid, NULL, 0);
1762 if (data == (void *) -1) {
1770 * HP-UX inherits shm mappings?
1775 fd = calloc(1, sizeof(*fd));
1776 fd->td = data + offset * sizeof(struct thread_data);
1777 fd->sk_out = sk_out;
1778 ret = thread_main(fd);
1780 return (int) (uintptr_t) ret;
1783 static void dump_td_info(struct thread_data *td)
1785 log_err("fio: job '%s' hasn't exited in %lu seconds, it appears to "
1786 "be stuck. Doing forceful exit of this job.\n", td->o.name,
1787 (unsigned long) time_since_now(&td->terminate_time));
1791 * Run over the job map and reap the threads that have exited, if any.
1793 static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1794 unsigned int *m_rate)
1796 struct thread_data *td;
1797 unsigned int cputhreads, realthreads, pending;
1801 * reap exited threads (TD_EXITED -> TD_REAPED)
1803 realthreads = pending = cputhreads = 0;
1804 for_each_td(td, i) {
1808 * ->io_ops is NULL for a thread that has closed its
1811 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1820 if (td->runstate == TD_REAPED)
1822 if (td->o.use_thread) {
1823 if (td->runstate == TD_EXITED) {
1824 td_set_runstate(td, TD_REAPED);
1831 if (td->runstate == TD_EXITED)
1835 * check if someone quit or got killed in an unusual way
1837 ret = waitpid(td->pid, &status, flags);
1839 if (errno == ECHILD) {
1840 log_err("fio: pid=%d disappeared %d\n",
1841 (int) td->pid, td->runstate);
1843 td_set_runstate(td, TD_REAPED);
1847 } else if (ret == td->pid) {
1848 if (WIFSIGNALED(status)) {
1849 int sig = WTERMSIG(status);
1851 if (sig != SIGTERM && sig != SIGUSR2)
1852 log_err("fio: pid=%d, got signal=%d\n",
1853 (int) td->pid, sig);
1855 td_set_runstate(td, TD_REAPED);
1858 if (WIFEXITED(status)) {
1859 if (WEXITSTATUS(status) && !td->error)
1860 td->error = WEXITSTATUS(status);
1862 td_set_runstate(td, TD_REAPED);
1868 * If the job is stuck, do a forceful timeout of it and
1871 if (td->terminate &&
1872 time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) {
1874 td_set_runstate(td, TD_REAPED);
1879 * thread is not dead, continue
1885 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1886 (*t_rate) -= ddir_rw_sum(td->o.rate);
1893 done_secs += mtime_since_now(&td->epoch) / 1000;
1894 profile_td_exit(td);
1897 if (*nr_running == cputhreads && !pending && realthreads)
1898 fio_terminate_threads(TERMINATE_ALL);
1901 static bool __check_trigger_file(void)
1908 if (stat(trigger_file, &sb))
1911 if (unlink(trigger_file) < 0)
1912 log_err("fio: failed to unlink %s: %s\n", trigger_file,
1918 static bool trigger_timedout(void)
1920 if (trigger_timeout)
1921 return time_since_genesis() >= trigger_timeout;
1926 void exec_trigger(const char *cmd)
1935 log_err("fio: failed executing %s trigger\n", cmd);
1938 void check_trigger_file(void)
1940 if (__check_trigger_file() || trigger_timedout()) {
1942 fio_clients_send_trigger(trigger_remote_cmd);
1944 verify_save_state(IO_LIST_ALL);
1945 fio_terminate_threads(TERMINATE_ALL);
1946 exec_trigger(trigger_cmd);
1951 static int fio_verify_load_state(struct thread_data *td)
1955 if (!td->o.verify_state)
1962 ret = fio_server_get_verify_state(td->o.name,
1963 td->thread_number - 1, &data, &ver);
1965 verify_convert_assign_state(td, data, ver);
1967 ret = verify_load_state(td, "local");
1972 static void do_usleep(unsigned int usecs)
1974 check_for_running_stats();
1975 check_trigger_file();
1979 static bool check_mount_writes(struct thread_data *td)
1984 if (!td_write(td) || td->o.allow_mounted_write)
1987 for_each_file(td, f, i) {
1988 if (f->filetype != FIO_TYPE_BD)
1990 if (device_is_mounted(f->file_name))
1996 log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.", f->file_name);
2000 static bool waitee_running(struct thread_data *me)
2002 const char *waitee = me->o.wait_for;
2003 const char *self = me->o.name;
2004 struct thread_data *td;
2010 for_each_td(td, i) {
2011 if (!strcmp(td->o.name, self) || strcmp(td->o.name, waitee))
2014 if (td->runstate < TD_EXITED) {
2015 dprint(FD_PROCESS, "%s fenced by %s(%s)\n",
2017 runstate_to_name(td->runstate));
2022 dprint(FD_PROCESS, "%s: %s completed, can run\n", self, waitee);
2027 * Main function for kicking off and reaping jobs, as needed.
2029 static void run_threads(struct sk_out *sk_out)
2031 struct thread_data *td;
2032 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
2035 if (fio_gtod_offload && fio_start_gtod_thread())
2038 fio_idle_prof_init();
2042 nr_thread = nr_process = 0;
2043 for_each_td(td, i) {
2044 if (check_mount_writes(td))
2046 if (td->o.use_thread)
2052 if (output_format & FIO_OUTPUT_NORMAL) {
2053 log_info("Starting ");
2055 log_info("%d thread%s", nr_thread,
2056 nr_thread > 1 ? "s" : "");
2060 log_info("%d process%s", nr_process,
2061 nr_process > 1 ? "es" : "");
2067 todo = thread_number;
2070 m_rate = t_rate = 0;
2072 for_each_td(td, i) {
2073 print_status_init(td->thread_number - 1);
2075 if (!td->o.create_serialize)
2078 if (fio_verify_load_state(td))
2082 * do file setup here so it happens sequentially,
2083 * we don't want X number of threads getting their
2084 * client data interspersed on disk
2086 if (setup_files(td)) {
2090 log_err("fio: pid=%d, err=%d/%s\n",
2091 (int) td->pid, td->error, td->verror);
2092 td_set_runstate(td, TD_REAPED);
2099 * for sharing to work, each job must always open
2100 * its own files. so close them, if we opened them
2103 for_each_file(td, f, j) {
2104 if (fio_file_open(f))
2105 td_io_close_file(td, f);
2110 /* start idle threads before io threads start to run */
2111 fio_idle_prof_start();
2116 struct thread_data *map[REAL_MAX_JOBS];
2117 struct timeval this_start;
2118 int this_jobs = 0, left;
2121 * create threads (TD_NOT_CREATED -> TD_CREATED)
2123 for_each_td(td, i) {
2124 if (td->runstate != TD_NOT_CREATED)
2128 * never got a chance to start, killed by other
2129 * thread for some reason
2131 if (td->terminate) {
2136 if (td->o.start_delay) {
2137 spent = utime_since_genesis();
2139 if (td->o.start_delay > spent)
2143 if (td->o.stonewall && (nr_started || nr_running)) {
2144 dprint(FD_PROCESS, "%s: stonewall wait\n",
2149 if (waitee_running(td)) {
2150 dprint(FD_PROCESS, "%s: waiting for %s\n",
2151 td->o.name, td->o.wait_for);
2157 td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
2158 td->update_rusage = 0;
2161 * Set state to created. Thread will transition
2162 * to TD_INITIALIZED when it's done setting up.
2164 td_set_runstate(td, TD_CREATED);
2165 map[this_jobs++] = td;
2168 if (td->o.use_thread) {
2169 struct fork_data *fd;
2172 fd = calloc(1, sizeof(*fd));
2174 fd->sk_out = sk_out;
2176 dprint(FD_PROCESS, "will pthread_create\n");
2177 ret = pthread_create(&td->thread, NULL,
2180 log_err("pthread_create: %s\n",
2186 ret = pthread_detach(td->thread);
2188 log_err("pthread_detach: %s",
2192 dprint(FD_PROCESS, "will fork\n");
2195 int ret = fork_main(sk_out, shm_id, i);
2198 } else if (i == fio_debug_jobno)
2199 *fio_debug_jobp = pid;
2201 dprint(FD_MUTEX, "wait on startup_mutex\n");
2202 if (fio_mutex_down_timeout(startup_mutex, 10000)) {
2203 log_err("fio: job startup hung? exiting.\n");
2204 fio_terminate_threads(TERMINATE_ALL);
2209 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2213 * Wait for the started threads to transition to
2216 fio_gettime(&this_start, NULL);
2218 while (left && !fio_abort) {
2219 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
2224 for (i = 0; i < this_jobs; i++) {
2228 if (td->runstate == TD_INITIALIZED) {
2231 } else if (td->runstate >= TD_EXITED) {
2235 nr_running++; /* work-around... */
2241 log_err("fio: %d job%s failed to start\n", left,
2242 left > 1 ? "s" : "");
2243 for (i = 0; i < this_jobs; i++) {
2247 kill(td->pid, SIGTERM);
2253 * start created threads (TD_INITIALIZED -> TD_RUNNING).
2255 for_each_td(td, i) {
2256 if (td->runstate != TD_INITIALIZED)
2259 if (in_ramp_time(td))
2260 td_set_runstate(td, TD_RAMP);
2262 td_set_runstate(td, TD_RUNNING);
2265 m_rate += ddir_rw_sum(td->o.ratemin);
2266 t_rate += ddir_rw_sum(td->o.rate);
2268 fio_mutex_up(td->mutex);
2271 reap_threads(&nr_running, &t_rate, &m_rate);
2277 while (nr_running) {
2278 reap_threads(&nr_running, &t_rate, &m_rate);
2282 fio_idle_prof_stop();
2287 static void wait_for_helper_thread_exit(void)
2292 pthread_cond_signal(&helper_cond);
2293 pthread_join(helper_thread, &ret);
2296 static void free_disk_util(void)
2298 disk_util_prune_entries();
2300 pthread_cond_destroy(&helper_cond);
2303 static void *helper_thread_main(void *data)
2305 struct sk_out *sk_out = data;
2308 sk_out_assign(sk_out);
2310 fio_mutex_up(startup_mutex);
2313 uint64_t sec = DISK_UTIL_MSEC / 1000;
2314 uint64_t nsec = (DISK_UTIL_MSEC % 1000) * 1000000;
2318 gettimeofday(&tv, NULL);
2319 ts.tv_sec = tv.tv_sec + sec;
2320 ts.tv_nsec = (tv.tv_usec * 1000) + nsec;
2322 if (ts.tv_nsec >= 1000000000ULL) {
2323 ts.tv_nsec -= 1000000000ULL;
2327 pthread_cond_timedwait(&helper_cond, &helper_lock, &ts);
2329 ret = update_io_ticks();
2331 if (helper_do_stat) {
2333 __show_running_run_stats();
2337 print_thread_status();
2344 static int create_helper_thread(struct sk_out *sk_out)
2350 pthread_cond_init(&helper_cond, NULL);
2351 pthread_mutex_init(&helper_lock, NULL);
2353 ret = pthread_create(&helper_thread, NULL, helper_thread_main, sk_out);
2355 log_err("Can't create helper thread: %s\n", strerror(ret));
2359 dprint(FD_MUTEX, "wait on startup_mutex\n");
2360 fio_mutex_down(startup_mutex);
2361 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2365 int fio_backend(struct sk_out *sk_out)
2367 struct thread_data *td;
2371 if (load_profile(exec_profile))
2374 exec_profile = NULL;
2380 struct log_params p = {
2381 .log_type = IO_LOG_TYPE_BW,
2384 setup_log(&agg_io_log[DDIR_READ], &p, "agg-read_bw.log");
2385 setup_log(&agg_io_log[DDIR_WRITE], &p, "agg-write_bw.log");
2386 setup_log(&agg_io_log[DDIR_TRIM], &p, "agg-trim_bw.log");
2389 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
2390 if (startup_mutex == NULL)
2395 create_helper_thread(sk_out);
2397 cgroup_list = smalloc(sizeof(*cgroup_list));
2398 INIT_FLIST_HEAD(cgroup_list);
2400 run_threads(sk_out);
2402 wait_for_helper_thread_exit();
2407 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2408 struct io_log *log = agg_io_log[i];
2416 for_each_td(td, i) {
2417 fio_options_free(td);
2418 if (td->rusage_sem) {
2419 fio_mutex_remove(td->rusage_sem);
2420 td->rusage_sem = NULL;
2425 cgroup_kill(cgroup_list);
2429 fio_mutex_remove(startup_mutex);