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 (io_u_queued_complete(td, 1) < 0)
314 } else if (ret == FIO_Q_COMPLETED) {
316 td_verror(td, io_u->error, "td_io_queue");
320 if (io_u_sync_complete(td, io_u) < 0)
322 } else if (ret == FIO_Q_BUSY) {
323 if (td_io_commit(td))
331 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
335 if (fio_file_open(f))
336 return fio_io_sync(td, f);
338 if (td_io_open_file(td, f))
341 ret = fio_io_sync(td, f);
342 td_io_close_file(td, f);
346 static inline void __update_tv_cache(struct thread_data *td)
348 fio_gettime(&td->tv_cache, NULL);
351 static inline void update_tv_cache(struct thread_data *td)
353 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
354 __update_tv_cache(td);
357 static inline bool runtime_exceeded(struct thread_data *td, struct timeval *t)
359 if (in_ramp_time(td))
363 if (utime_since(&td->epoch, t) >= td->o.timeout)
370 * We need to update the runtime consistently in ms, but keep a running
371 * tally of the current elapsed time in microseconds for sub millisecond
374 static inline void update_runtime(struct thread_data *td,
375 unsigned long long *elapsed_us,
376 const enum fio_ddir ddir)
378 if (ddir == DDIR_WRITE && td_write(td) && td->o.verify_only)
381 td->ts.runtime[ddir] -= (elapsed_us[ddir] + 999) / 1000;
382 elapsed_us[ddir] += utime_since_now(&td->start);
383 td->ts.runtime[ddir] += (elapsed_us[ddir] + 999) / 1000;
386 static bool break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
391 if (ret < 0 || td->error) {
393 enum error_type_bit eb;
398 eb = td_error_type(ddir, err);
399 if (!(td->o.continue_on_error & (1 << eb)))
402 if (td_non_fatal_error(td, eb, err)) {
404 * Continue with the I/Os in case of
407 update_error_count(td, err);
411 } else if (td->o.fill_device && err == ENOSPC) {
413 * We expect to hit this error if
414 * fill_device option is set.
417 fio_mark_td_terminate(td);
421 * Stop the I/O in case of a fatal
424 update_error_count(td, err);
432 static void check_update_rusage(struct thread_data *td)
434 if (td->update_rusage) {
435 td->update_rusage = 0;
436 update_rusage_stat(td);
437 fio_mutex_up(td->rusage_sem);
441 static int wait_for_completions(struct thread_data *td, struct timeval *time)
443 const int full = queue_full(td);
448 * if the queue is full, we MUST reap at least 1 event
450 min_evts = min(td->o.iodepth_batch_complete_min, td->cur_depth);
451 if ((full && !min_evts) || !td->o.iodepth_batch_complete_min)
454 if (time && (__should_check_rate(td, DDIR_READ) ||
455 __should_check_rate(td, DDIR_WRITE) ||
456 __should_check_rate(td, DDIR_TRIM)))
457 fio_gettime(time, NULL);
460 ret = io_u_queued_complete(td, min_evts);
463 } while (full && (td->cur_depth > td->o.iodepth_low));
468 int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
469 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
470 struct timeval *comp_time)
475 case FIO_Q_COMPLETED:
478 clear_io_u(td, io_u);
479 } else if (io_u->resid) {
480 int bytes = io_u->xfer_buflen - io_u->resid;
481 struct fio_file *f = io_u->file;
484 *bytes_issued += bytes;
487 trim_io_piece(td, io_u);
494 unlog_io_piece(td, io_u);
495 td_verror(td, EIO, "full resid");
500 io_u->xfer_buflen = io_u->resid;
501 io_u->xfer_buf += bytes;
502 io_u->offset += bytes;
504 if (ddir_rw(io_u->ddir))
505 td->ts.short_io_u[io_u->ddir]++;
508 if (io_u->offset == f->real_file_size)
511 requeue_io_u(td, &io_u);
514 if (comp_time && (__should_check_rate(td, DDIR_READ) ||
515 __should_check_rate(td, DDIR_WRITE) ||
516 __should_check_rate(td, DDIR_TRIM)))
517 fio_gettime(comp_time, NULL);
519 *ret = io_u_sync_complete(td, io_u);
526 * if the engine doesn't have a commit hook,
527 * the io_u is really queued. if it does have such
528 * a hook, it has to call io_u_queued() itself.
530 if (td->io_ops->commit == NULL)
531 io_u_queued(td, io_u);
533 *bytes_issued += io_u->xfer_buflen;
537 unlog_io_piece(td, io_u);
538 requeue_io_u(td, &io_u);
539 ret2 = td_io_commit(td);
545 td_verror(td, -(*ret), "td_io_queue");
549 if (break_on_this_error(td, ddir, ret))
555 static inline bool io_in_polling(struct thread_data *td)
557 return !td->o.iodepth_batch_complete_min &&
558 !td->o.iodepth_batch_complete_max;
562 * The main verify engine. Runs over the writes we previously submitted,
563 * reads the blocks back in, and checks the crc/md5 of the data.
565 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
572 dprint(FD_VERIFY, "starting loop\n");
575 * sync io first and invalidate cache, to make sure we really
578 for_each_file(td, f, i) {
579 if (!fio_file_open(f))
581 if (fio_io_sync(td, f))
583 if (file_invalidate_cache(td, f))
587 check_update_rusage(td);
592 td_set_runstate(td, TD_VERIFYING);
595 while (!td->terminate) {
600 check_update_rusage(td);
602 if (runtime_exceeded(td, &td->tv_cache)) {
603 __update_tv_cache(td);
604 if (runtime_exceeded(td, &td->tv_cache)) {
605 fio_mark_td_terminate(td);
610 if (flow_threshold_exceeded(td))
613 if (!td->o.experimental_verify) {
614 io_u = __get_io_u(td);
618 if (get_next_verify(td, io_u)) {
623 if (td_io_prep(td, io_u)) {
628 if (ddir_rw_sum(td->bytes_done) + td->o.rw_min_bs > verify_bytes)
631 while ((io_u = get_io_u(td)) != NULL) {
639 * We are only interested in the places where
640 * we wrote or trimmed IOs. Turn those into
641 * reads for verification purposes.
643 if (io_u->ddir == DDIR_READ) {
645 * Pretend we issued it for rwmix
648 td->io_issues[DDIR_READ]++;
651 } else if (io_u->ddir == DDIR_TRIM) {
652 io_u->ddir = DDIR_READ;
653 io_u_set(io_u, IO_U_F_TRIMMED);
655 } else if (io_u->ddir == DDIR_WRITE) {
656 io_u->ddir = DDIR_READ;
668 if (verify_state_should_stop(td, io_u)) {
673 if (td->o.verify_async)
674 io_u->end_io = verify_io_u_async;
676 io_u->end_io = verify_io_u;
679 if (!td->o.disable_slat)
680 fio_gettime(&io_u->start_time, NULL);
682 ret = td_io_queue(td, io_u);
684 if (io_queue_event(td, io_u, &ret, ddir, NULL, 1, NULL))
688 * if we can queue more, do so. but check if there are
689 * completed io_u's first. Note that we can get BUSY even
690 * without IO queued, if the system is resource starved.
693 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
694 if (full || io_in_polling(td))
695 ret = wait_for_completions(td, NULL);
701 check_update_rusage(td);
704 min_events = td->cur_depth;
707 ret = io_u_queued_complete(td, min_events);
709 cleanup_pending_aio(td);
711 td_set_runstate(td, TD_RUNNING);
713 dprint(FD_VERIFY, "exiting loop\n");
716 static bool exceeds_number_ios(struct thread_data *td)
718 unsigned long long number_ios;
720 if (!td->o.number_ios)
723 number_ios = ddir_rw_sum(td->io_blocks);
724 number_ios += td->io_u_queued + td->io_u_in_flight;
726 return number_ios >= (td->o.number_ios * td->loops);
729 static bool io_issue_bytes_exceeded(struct thread_data *td)
731 unsigned long long bytes, limit;
734 bytes = td->io_issue_bytes[DDIR_READ] + td->io_issue_bytes[DDIR_WRITE];
735 else if (td_write(td))
736 bytes = td->io_issue_bytes[DDIR_WRITE];
737 else if (td_read(td))
738 bytes = td->io_issue_bytes[DDIR_READ];
740 bytes = td->io_issue_bytes[DDIR_TRIM];
743 limit = td->o.io_limit;
748 return bytes >= limit || exceeds_number_ios(td);
751 static bool io_complete_bytes_exceeded(struct thread_data *td)
753 unsigned long long bytes, limit;
756 bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE];
757 else if (td_write(td))
758 bytes = td->this_io_bytes[DDIR_WRITE];
759 else if (td_read(td))
760 bytes = td->this_io_bytes[DDIR_READ];
762 bytes = td->this_io_bytes[DDIR_TRIM];
765 limit = td->o.io_limit;
770 return bytes >= limit || exceeds_number_ios(td);
774 * used to calculate the next io time for rate control
777 static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
779 uint64_t secs, remainder, bps, bytes, iops;
781 assert(!(td->flags & TD_F_CHILD));
782 bytes = td->rate_io_issue_bytes[ddir];
783 bps = td->rate_bps[ddir];
785 if (td->o.rate_process == RATE_PROCESS_POISSON) {
787 iops = bps / td->o.bs[ddir];
788 val = (int64_t) (1000000 / iops) *
789 -logf(__rand_0_1(&td->poisson_state));
791 dprint(FD_RATE, "poisson rate iops=%llu\n",
792 (unsigned long long) 1000000 / val);
794 td->last_usec += val;
795 return td->last_usec;
798 remainder = bytes % bps;
799 return remainder * 1000000 / bps + secs * 1000000;
806 * Main IO worker function. It retrieves io_u's to process and queues
807 * and reaps them, checking for rate and errors along the way.
809 * Returns number of bytes written and trimmed.
811 static void do_io(struct thread_data *td, uint64_t *bytes_done)
815 uint64_t total_bytes, bytes_issued = 0;
817 for (i = 0; i < DDIR_RWDIR_CNT; i++)
818 bytes_done[i] = td->bytes_done[i];
820 if (in_ramp_time(td))
821 td_set_runstate(td, TD_RAMP);
823 td_set_runstate(td, TD_RUNNING);
827 total_bytes = td->o.size;
829 * Allow random overwrite workloads to write up to io_limit
830 * before starting verification phase as 'size' doesn't apply.
832 if (td_write(td) && td_random(td) && td->o.norandommap)
833 total_bytes = max(total_bytes, (uint64_t) td->o.io_limit);
835 * If verify_backlog is enabled, we'll run the verify in this
836 * handler as well. For that case, we may need up to twice the
839 if (td->o.verify != VERIFY_NONE &&
840 (td_write(td) && td->o.verify_backlog))
841 total_bytes += td->o.size;
843 /* In trimwrite mode, each byte is trimmed and then written, so
844 * allow total_bytes to be twice as big */
845 if (td_trimwrite(td))
846 total_bytes += td->total_io_size;
848 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
849 (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) ||
851 struct timeval comp_time;
856 check_update_rusage(td);
858 if (td->terminate || td->done)
863 if (runtime_exceeded(td, &td->tv_cache)) {
864 __update_tv_cache(td);
865 if (runtime_exceeded(td, &td->tv_cache)) {
866 fio_mark_td_terminate(td);
871 if (flow_threshold_exceeded(td))
874 if (!td->o.time_based && bytes_issued >= total_bytes)
878 if (IS_ERR_OR_NULL(io_u)) {
879 int err = PTR_ERR(io_u);
886 if (td->o.latency_target)
894 * Add verification end_io handler if:
895 * - Asked to verify (!td_rw(td))
896 * - Or the io_u is from our verify list (mixed write/ver)
898 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
899 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
901 if (!td->o.verify_pattern_bytes) {
902 io_u->rand_seed = __rand(&td->verify_state);
903 if (sizeof(int) != sizeof(long *))
904 io_u->rand_seed *= __rand(&td->verify_state);
907 if (verify_state_should_stop(td, io_u)) {
912 if (td->o.verify_async)
913 io_u->end_io = verify_io_u_async;
915 io_u->end_io = verify_io_u;
916 td_set_runstate(td, TD_VERIFYING);
917 } else if (in_ramp_time(td))
918 td_set_runstate(td, TD_RAMP);
920 td_set_runstate(td, TD_RUNNING);
923 * Always log IO before it's issued, so we know the specific
924 * order of it. The logged unit will track when the IO has
927 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
929 td->o.verify != VERIFY_NONE &&
930 !td->o.experimental_verify)
931 log_io_piece(td, io_u);
933 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
934 const unsigned long blen = io_u->xfer_buflen;
935 const enum fio_ddir ddir = acct_ddir(io_u);
940 workqueue_enqueue(&td->io_wq, &io_u->work);
944 td->io_issues[ddir]++;
945 td->io_issue_bytes[ddir] += blen;
946 td->rate_io_issue_bytes[ddir] += blen;
949 if (should_check_rate(td))
950 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
953 ret = td_io_queue(td, io_u);
955 if (should_check_rate(td))
956 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
958 if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
962 * See if we need to complete some commands. Note that
963 * we can get BUSY even without IO queued, if the
964 * system is resource starved.
967 full = queue_full(td) ||
968 (ret == FIO_Q_BUSY && td->cur_depth);
969 if (full || io_in_polling(td))
970 ret = wait_for_completions(td, &comp_time);
974 if (!ddir_rw_sum(td->bytes_done) &&
975 !(td->io_ops->flags & FIO_NOIO))
978 if (!in_ramp_time(td) && should_check_rate(td)) {
979 if (check_min_rate(td, &comp_time)) {
980 if (exitall_on_terminate || td->o.exitall_error)
981 fio_terminate_threads(td->groupid);
982 td_verror(td, EIO, "check_min_rate");
986 if (!in_ramp_time(td) && td->o.latency_target)
987 lat_target_check(td);
989 if (td->o.thinktime) {
990 unsigned long long b;
992 b = ddir_rw_sum(td->io_blocks);
993 if (!(b % td->o.thinktime_blocks)) {
998 if (td->o.thinktime_spin)
999 usec_spin(td->o.thinktime_spin);
1001 left = td->o.thinktime - td->o.thinktime_spin;
1003 usec_sleep(td, left);
1008 check_update_rusage(td);
1010 if (td->trim_entries)
1011 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
1013 if (td->o.fill_device && td->error == ENOSPC) {
1015 fio_mark_td_terminate(td);
1020 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1021 workqueue_flush(&td->io_wq);
1027 ret = io_u_queued_complete(td, i);
1028 if (td->o.fill_device && td->error == ENOSPC)
1032 if (should_fsync(td) && td->o.end_fsync) {
1033 td_set_runstate(td, TD_FSYNCING);
1035 for_each_file(td, f, i) {
1036 if (!fio_file_fsync(td, f))
1039 log_err("fio: end_fsync failed for file %s\n",
1044 cleanup_pending_aio(td);
1047 * stop job if we failed doing any IO
1049 if (!ddir_rw_sum(td->this_io_bytes))
1052 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1053 bytes_done[i] = td->bytes_done[i] - bytes_done[i];
1056 static void cleanup_io_u(struct thread_data *td)
1060 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
1062 if (td->io_ops->io_u_free)
1063 td->io_ops->io_u_free(td, io_u);
1065 fio_memfree(io_u, sizeof(*io_u));
1070 io_u_rexit(&td->io_u_requeues);
1071 io_u_qexit(&td->io_u_freelist);
1072 io_u_qexit(&td->io_u_all);
1074 if (td->last_write_comp)
1075 sfree(td->last_write_comp);
1078 static int init_io_u(struct thread_data *td)
1081 unsigned int max_bs, min_write;
1082 int cl_align, i, max_units;
1083 int data_xfer = 1, err;
1086 max_units = td->o.iodepth;
1087 max_bs = td_max_bs(td);
1088 min_write = td->o.min_bs[DDIR_WRITE];
1089 td->orig_buffer_size = (unsigned long long) max_bs
1090 * (unsigned long long) max_units;
1092 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
1096 err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
1097 err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
1098 err += io_u_qinit(&td->io_u_all, td->o.iodepth);
1101 log_err("fio: failed setting up IO queues\n");
1106 * if we may later need to do address alignment, then add any
1107 * possible adjustment here so that we don't cause a buffer
1108 * overflow later. this adjustment may be too much if we get
1109 * lucky and the allocator gives us an aligned address.
1111 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1112 (td->io_ops->flags & FIO_RAWIO))
1113 td->orig_buffer_size += page_mask + td->o.mem_align;
1115 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1118 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1119 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1122 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1123 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1127 if (data_xfer && allocate_io_mem(td))
1130 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1131 (td->io_ops->flags & FIO_RAWIO))
1132 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
1134 p = td->orig_buffer;
1136 cl_align = os_cache_line_size();
1138 for (i = 0; i < max_units; i++) {
1144 ptr = fio_memalign(cl_align, sizeof(*io_u));
1146 log_err("fio: unable to allocate aligned memory\n");
1151 memset(io_u, 0, sizeof(*io_u));
1152 INIT_FLIST_HEAD(&io_u->verify_list);
1153 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1157 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1160 io_u_fill_buffer(td, io_u, min_write, max_bs);
1161 if (td_write(td) && td->o.verify_pattern_bytes) {
1163 * Fill the buffer with the pattern if we are
1164 * going to be doing writes.
1166 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1171 io_u->flags = IO_U_F_FREE;
1172 io_u_qpush(&td->io_u_freelist, io_u);
1175 * io_u never leaves this stack, used for iteration of all
1178 io_u_qpush(&td->io_u_all, io_u);
1180 if (td->io_ops->io_u_init) {
1181 int ret = td->io_ops->io_u_init(td, io_u);
1184 log_err("fio: failed to init engine data: %d\n", ret);
1192 if (td->o.verify != VERIFY_NONE) {
1193 td->last_write_comp = scalloc(max_units, sizeof(uint64_t));
1194 if (!td->last_write_comp) {
1195 log_err("fio: failed to alloc write comp data\n");
1203 static int switch_ioscheduler(struct thread_data *td)
1205 char tmp[256], tmp2[128];
1209 if (td->io_ops->flags & FIO_DISKLESSIO)
1212 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
1214 f = fopen(tmp, "r+");
1216 if (errno == ENOENT) {
1217 log_err("fio: os or kernel doesn't support IO scheduler"
1221 td_verror(td, errno, "fopen iosched");
1228 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1229 if (ferror(f) || ret != 1) {
1230 td_verror(td, errno, "fwrite");
1238 * Read back and check that the selected scheduler is now the default.
1240 memset(tmp, 0, sizeof(tmp));
1241 ret = fread(tmp, sizeof(tmp), 1, f);
1242 if (ferror(f) || ret < 0) {
1243 td_verror(td, errno, "fread");
1248 * either a list of io schedulers or "none\n" is expected.
1250 tmp[strlen(tmp) - 1] = '\0';
1253 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1254 if (!strstr(tmp, tmp2)) {
1255 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1256 td_verror(td, EINVAL, "iosched_switch");
1265 static bool keep_running(struct thread_data *td)
1267 unsigned long long limit;
1271 if (td->o.time_based)
1277 if (exceeds_number_ios(td))
1281 limit = td->o.io_limit;
1285 if (limit != -1ULL && ddir_rw_sum(td->io_bytes) < limit) {
1289 * If the difference is less than the minimum IO size, we
1292 diff = limit - ddir_rw_sum(td->io_bytes);
1293 if (diff < td_max_bs(td))
1296 if (fio_files_done(td) && !td->o.io_limit)
1305 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1307 size_t newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1311 str = malloc(newlen);
1312 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1314 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1317 log_err("fio: exec of cmd <%s> failed\n", str);
1324 * Dry run to compute correct state of numberio for verification.
1326 static uint64_t do_dry_run(struct thread_data *td)
1328 td_set_runstate(td, TD_RUNNING);
1330 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1331 (!flist_empty(&td->trim_list)) || !io_complete_bytes_exceeded(td)) {
1335 if (td->terminate || td->done)
1338 io_u = get_io_u(td);
1342 io_u_set(io_u, IO_U_F_FLIGHT);
1345 if (ddir_rw(acct_ddir(io_u)))
1346 td->io_issues[acct_ddir(io_u)]++;
1347 if (ddir_rw(io_u->ddir)) {
1348 io_u_mark_depth(td, 1);
1349 td->ts.total_io_u[io_u->ddir]++;
1352 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1354 td->o.verify != VERIFY_NONE &&
1355 !td->o.experimental_verify)
1356 log_io_piece(td, io_u);
1358 ret = io_u_sync_complete(td, io_u);
1362 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1366 struct thread_data *td;
1367 struct sk_out *sk_out;
1371 * Entry point for the thread based jobs. The process based jobs end up
1372 * here as well, after a little setup.
1374 static void *thread_main(void *data)
1376 struct fork_data *fd = data;
1377 unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
1378 struct thread_data *td = fd->td;
1379 struct thread_options *o = &td->o;
1380 struct sk_out *sk_out = fd->sk_out;
1381 pthread_condattr_t attr;
1385 sk_out_assign(sk_out);
1388 if (!o->use_thread) {
1394 fio_local_clock_init(o->use_thread);
1396 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1399 fio_server_send_start(td);
1401 INIT_FLIST_HEAD(&td->io_log_list);
1402 INIT_FLIST_HEAD(&td->io_hist_list);
1403 INIT_FLIST_HEAD(&td->verify_list);
1404 INIT_FLIST_HEAD(&td->trim_list);
1405 INIT_FLIST_HEAD(&td->next_rand_list);
1406 pthread_mutex_init(&td->io_u_lock, NULL);
1407 td->io_hist_tree = RB_ROOT;
1409 pthread_condattr_init(&attr);
1410 pthread_cond_init(&td->verify_cond, &attr);
1411 pthread_cond_init(&td->free_cond, &attr);
1413 td_set_runstate(td, TD_INITIALIZED);
1414 dprint(FD_MUTEX, "up startup_mutex\n");
1415 fio_mutex_up(startup_mutex);
1416 dprint(FD_MUTEX, "wait on td->mutex\n");
1417 fio_mutex_down(td->mutex);
1418 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1421 * A new gid requires privilege, so we need to do this before setting
1424 if (o->gid != -1U && setgid(o->gid)) {
1425 td_verror(td, errno, "setgid");
1428 if (o->uid != -1U && setuid(o->uid)) {
1429 td_verror(td, errno, "setuid");
1434 * If we have a gettimeofday() thread, make sure we exclude that
1435 * thread from this job
1438 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1441 * Set affinity first, in case it has an impact on the memory
1444 if (fio_option_is_set(o, cpumask)) {
1445 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1446 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1448 log_err("fio: no CPUs set\n");
1449 log_err("fio: Try increasing number of available CPUs\n");
1450 td_verror(td, EINVAL, "cpus_split");
1454 ret = fio_setaffinity(td->pid, o->cpumask);
1456 td_verror(td, errno, "cpu_set_affinity");
1461 #ifdef CONFIG_LIBNUMA
1462 /* numa node setup */
1463 if (fio_option_is_set(o, numa_cpunodes) ||
1464 fio_option_is_set(o, numa_memnodes)) {
1465 struct bitmask *mask;
1467 if (numa_available() < 0) {
1468 td_verror(td, errno, "Does not support NUMA API\n");
1472 if (fio_option_is_set(o, numa_cpunodes)) {
1473 mask = numa_parse_nodestring(o->numa_cpunodes);
1474 ret = numa_run_on_node_mask(mask);
1475 numa_free_nodemask(mask);
1477 td_verror(td, errno, \
1478 "numa_run_on_node_mask failed\n");
1483 if (fio_option_is_set(o, numa_memnodes)) {
1485 if (o->numa_memnodes)
1486 mask = numa_parse_nodestring(o->numa_memnodes);
1488 switch (o->numa_mem_mode) {
1489 case MPOL_INTERLEAVE:
1490 numa_set_interleave_mask(mask);
1493 numa_set_membind(mask);
1496 numa_set_localalloc();
1498 case MPOL_PREFERRED:
1499 numa_set_preferred(o->numa_mem_prefer_node);
1507 numa_free_nodemask(mask);
1513 if (fio_pin_memory(td))
1517 * May alter parameters that init_io_u() will use, so we need to
1526 if (o->verify_async && verify_async_init(td))
1529 if (fio_option_is_set(o, ioprio) ||
1530 fio_option_is_set(o, ioprio_class)) {
1531 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1533 td_verror(td, errno, "ioprio_set");
1538 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1542 if (nice(o->nice) == -1 && errno != 0) {
1543 td_verror(td, errno, "nice");
1547 if (o->ioscheduler && switch_ioscheduler(td))
1550 if (!o->create_serialize && setup_files(td))
1556 if (init_random_map(td))
1559 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1563 if (pre_read_files(td) < 0)
1567 if (iolog_compress_init(td, sk_out))
1570 fio_verify_init(td);
1572 if (rate_submit_init(td, sk_out))
1575 fio_gettime(&td->epoch, NULL);
1576 fio_getrusage(&td->ru_start);
1577 memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
1578 memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
1580 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1581 o->ratemin[DDIR_TRIM]) {
1582 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1583 sizeof(td->bw_sample_time));
1584 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1585 sizeof(td->bw_sample_time));
1586 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1587 sizeof(td->bw_sample_time));
1591 while (keep_running(td)) {
1592 uint64_t verify_bytes;
1594 fio_gettime(&td->start, NULL);
1595 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1598 clear_io_state(td, 0);
1600 prune_io_piece_log(td);
1602 if (td->o.verify_only && (td_write(td) || td_rw(td)))
1603 verify_bytes = do_dry_run(td);
1605 uint64_t bytes_done[DDIR_RWDIR_CNT];
1607 do_io(td, bytes_done);
1609 if (!ddir_rw_sum(bytes_done)) {
1610 fio_mark_td_terminate(td);
1613 verify_bytes = bytes_done[DDIR_WRITE] +
1614 bytes_done[DDIR_TRIM];
1621 * Make sure we've successfully updated the rusage stats
1622 * before waiting on the stat mutex. Otherwise we could have
1623 * the stat thread holding stat mutex and waiting for
1624 * the rusage_sem, which would never get upped because
1625 * this thread is waiting for the stat mutex.
1627 check_update_rusage(td);
1629 fio_mutex_down(stat_mutex);
1630 if (td_read(td) && td->io_bytes[DDIR_READ])
1631 update_runtime(td, elapsed_us, DDIR_READ);
1632 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1633 update_runtime(td, elapsed_us, DDIR_WRITE);
1634 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1635 update_runtime(td, elapsed_us, DDIR_TRIM);
1636 fio_gettime(&td->start, NULL);
1637 fio_mutex_up(stat_mutex);
1639 if (td->error || td->terminate)
1642 if (!o->do_verify ||
1643 o->verify == VERIFY_NONE ||
1644 (td->io_ops->flags & FIO_UNIDIR))
1647 clear_io_state(td, 0);
1649 fio_gettime(&td->start, NULL);
1651 do_verify(td, verify_bytes);
1654 * See comment further up for why this is done here.
1656 check_update_rusage(td);
1658 fio_mutex_down(stat_mutex);
1659 update_runtime(td, elapsed_us, DDIR_READ);
1660 fio_gettime(&td->start, NULL);
1661 fio_mutex_up(stat_mutex);
1663 if (td->error || td->terminate)
1667 update_rusage_stat(td);
1668 td->ts.total_run_time = mtime_since_now(&td->epoch);
1669 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1670 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1671 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1673 if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
1674 (td->o.verify != VERIFY_NONE && td_write(td)))
1675 verify_save_state(td->thread_number);
1677 fio_unpin_memory(td);
1679 fio_writeout_logs(td);
1681 iolog_compress_exit(td);
1682 rate_submit_exit(td);
1684 if (o->exec_postrun)
1685 exec_string(o, o->exec_postrun, (const char *)"postrun");
1687 if (exitall_on_terminate || (o->exitall_error && td->error))
1688 fio_terminate_threads(td->groupid);
1692 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1695 if (o->verify_async)
1696 verify_async_exit(td);
1698 close_and_free_files(td);
1701 cgroup_shutdown(td, &cgroup_mnt);
1702 verify_free_state(td);
1704 if (fio_option_is_set(o, cpumask)) {
1705 ret = fio_cpuset_exit(&o->cpumask);
1707 td_verror(td, ret, "fio_cpuset_exit");
1711 * do this very late, it will log file closing as well
1713 if (o->write_iolog_file)
1714 write_iolog_close(td);
1716 fio_mutex_remove(td->mutex);
1719 td_set_runstate(td, TD_EXITED);
1722 * Do this last after setting our runstate to exited, so we
1723 * know that the stat thread is signaled.
1725 check_update_rusage(td);
1728 return (void *) (uintptr_t) td->error;
1733 * We cannot pass the td data into a forked process, so attach the td and
1734 * pass it to the thread worker.
1736 static int fork_main(struct sk_out *sk_out, int shmid, int offset)
1738 struct fork_data *fd;
1741 #if !defined(__hpux) && !defined(CONFIG_NO_SHM)
1742 data = shmat(shmid, NULL, 0);
1743 if (data == (void *) -1) {
1751 * HP-UX inherits shm mappings?
1756 fd = calloc(1, sizeof(*fd));
1757 fd->td = data + offset * sizeof(struct thread_data);
1758 fd->sk_out = sk_out;
1759 ret = thread_main(fd);
1761 return (int) (uintptr_t) ret;
1764 static void dump_td_info(struct thread_data *td)
1766 log_err("fio: job '%s' hasn't exited in %lu seconds, it appears to "
1767 "be stuck. Doing forceful exit of this job.\n", td->o.name,
1768 (unsigned long) time_since_now(&td->terminate_time));
1772 * Run over the job map and reap the threads that have exited, if any.
1774 static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1775 unsigned int *m_rate)
1777 struct thread_data *td;
1778 unsigned int cputhreads, realthreads, pending;
1782 * reap exited threads (TD_EXITED -> TD_REAPED)
1784 realthreads = pending = cputhreads = 0;
1785 for_each_td(td, i) {
1789 * ->io_ops is NULL for a thread that has closed its
1792 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1801 if (td->runstate == TD_REAPED)
1803 if (td->o.use_thread) {
1804 if (td->runstate == TD_EXITED) {
1805 td_set_runstate(td, TD_REAPED);
1812 if (td->runstate == TD_EXITED)
1816 * check if someone quit or got killed in an unusual way
1818 ret = waitpid(td->pid, &status, flags);
1820 if (errno == ECHILD) {
1821 log_err("fio: pid=%d disappeared %d\n",
1822 (int) td->pid, td->runstate);
1824 td_set_runstate(td, TD_REAPED);
1828 } else if (ret == td->pid) {
1829 if (WIFSIGNALED(status)) {
1830 int sig = WTERMSIG(status);
1832 if (sig != SIGTERM && sig != SIGUSR2)
1833 log_err("fio: pid=%d, got signal=%d\n",
1834 (int) td->pid, sig);
1836 td_set_runstate(td, TD_REAPED);
1839 if (WIFEXITED(status)) {
1840 if (WEXITSTATUS(status) && !td->error)
1841 td->error = WEXITSTATUS(status);
1843 td_set_runstate(td, TD_REAPED);
1849 * If the job is stuck, do a forceful timeout of it and
1852 if (td->terminate &&
1853 time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) {
1855 td_set_runstate(td, TD_REAPED);
1860 * thread is not dead, continue
1866 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1867 (*t_rate) -= ddir_rw_sum(td->o.rate);
1874 done_secs += mtime_since_now(&td->epoch) / 1000;
1875 profile_td_exit(td);
1878 if (*nr_running == cputhreads && !pending && realthreads)
1879 fio_terminate_threads(TERMINATE_ALL);
1882 static bool __check_trigger_file(void)
1889 if (stat(trigger_file, &sb))
1892 if (unlink(trigger_file) < 0)
1893 log_err("fio: failed to unlink %s: %s\n", trigger_file,
1899 static bool trigger_timedout(void)
1901 if (trigger_timeout)
1902 return time_since_genesis() >= trigger_timeout;
1907 void exec_trigger(const char *cmd)
1916 log_err("fio: failed executing %s trigger\n", cmd);
1919 void check_trigger_file(void)
1921 if (__check_trigger_file() || trigger_timedout()) {
1923 fio_clients_send_trigger(trigger_remote_cmd);
1925 verify_save_state(IO_LIST_ALL);
1926 fio_terminate_threads(TERMINATE_ALL);
1927 exec_trigger(trigger_cmd);
1932 static int fio_verify_load_state(struct thread_data *td)
1936 if (!td->o.verify_state)
1943 ret = fio_server_get_verify_state(td->o.name,
1944 td->thread_number - 1, &data, &ver);
1946 verify_convert_assign_state(td, data, ver);
1948 ret = verify_load_state(td, "local");
1953 static void do_usleep(unsigned int usecs)
1955 check_for_running_stats();
1956 check_trigger_file();
1960 static bool check_mount_writes(struct thread_data *td)
1965 if (!td_write(td) || td->o.allow_mounted_write)
1968 for_each_file(td, f, i) {
1969 if (f->filetype != FIO_TYPE_BD)
1971 if (device_is_mounted(f->file_name))
1977 log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.", f->file_name);
1981 static bool waitee_running(struct thread_data *me)
1983 const char *waitee = me->o.wait_for;
1984 const char *self = me->o.name;
1985 struct thread_data *td;
1991 for_each_td(td, i) {
1992 if (!strcmp(td->o.name, self) || strcmp(td->o.name, waitee))
1995 if (td->runstate < TD_EXITED) {
1996 dprint(FD_PROCESS, "%s fenced by %s(%s)\n",
1998 runstate_to_name(td->runstate));
2003 dprint(FD_PROCESS, "%s: %s completed, can run\n", self, waitee);
2008 * Main function for kicking off and reaping jobs, as needed.
2010 static void run_threads(struct sk_out *sk_out)
2012 struct thread_data *td;
2013 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
2016 if (fio_gtod_offload && fio_start_gtod_thread())
2019 fio_idle_prof_init();
2023 nr_thread = nr_process = 0;
2024 for_each_td(td, i) {
2025 if (check_mount_writes(td))
2027 if (td->o.use_thread)
2033 if (output_format & FIO_OUTPUT_NORMAL) {
2034 log_info("Starting ");
2036 log_info("%d thread%s", nr_thread,
2037 nr_thread > 1 ? "s" : "");
2041 log_info("%d process%s", nr_process,
2042 nr_process > 1 ? "es" : "");
2048 todo = thread_number;
2051 m_rate = t_rate = 0;
2053 for_each_td(td, i) {
2054 print_status_init(td->thread_number - 1);
2056 if (!td->o.create_serialize)
2059 if (fio_verify_load_state(td))
2063 * do file setup here so it happens sequentially,
2064 * we don't want X number of threads getting their
2065 * client data interspersed on disk
2067 if (setup_files(td)) {
2071 log_err("fio: pid=%d, err=%d/%s\n",
2072 (int) td->pid, td->error, td->verror);
2073 td_set_runstate(td, TD_REAPED);
2080 * for sharing to work, each job must always open
2081 * its own files. so close them, if we opened them
2084 for_each_file(td, f, j) {
2085 if (fio_file_open(f))
2086 td_io_close_file(td, f);
2091 /* start idle threads before io threads start to run */
2092 fio_idle_prof_start();
2097 struct thread_data *map[REAL_MAX_JOBS];
2098 struct timeval this_start;
2099 int this_jobs = 0, left;
2102 * create threads (TD_NOT_CREATED -> TD_CREATED)
2104 for_each_td(td, i) {
2105 if (td->runstate != TD_NOT_CREATED)
2109 * never got a chance to start, killed by other
2110 * thread for some reason
2112 if (td->terminate) {
2117 if (td->o.start_delay) {
2118 spent = utime_since_genesis();
2120 if (td->o.start_delay > spent)
2124 if (td->o.stonewall && (nr_started || nr_running)) {
2125 dprint(FD_PROCESS, "%s: stonewall wait\n",
2130 if (waitee_running(td)) {
2131 dprint(FD_PROCESS, "%s: waiting for %s\n",
2132 td->o.name, td->o.wait_for);
2138 td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
2139 td->update_rusage = 0;
2142 * Set state to created. Thread will transition
2143 * to TD_INITIALIZED when it's done setting up.
2145 td_set_runstate(td, TD_CREATED);
2146 map[this_jobs++] = td;
2149 if (td->o.use_thread) {
2150 struct fork_data *fd;
2153 fd = calloc(1, sizeof(*fd));
2155 fd->sk_out = sk_out;
2157 dprint(FD_PROCESS, "will pthread_create\n");
2158 ret = pthread_create(&td->thread, NULL,
2161 log_err("pthread_create: %s\n",
2167 ret = pthread_detach(td->thread);
2169 log_err("pthread_detach: %s",
2173 dprint(FD_PROCESS, "will fork\n");
2176 int ret = fork_main(sk_out, shm_id, i);
2179 } else if (i == fio_debug_jobno)
2180 *fio_debug_jobp = pid;
2182 dprint(FD_MUTEX, "wait on startup_mutex\n");
2183 if (fio_mutex_down_timeout(startup_mutex, 10000)) {
2184 log_err("fio: job startup hung? exiting.\n");
2185 fio_terminate_threads(TERMINATE_ALL);
2190 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2194 * Wait for the started threads to transition to
2197 fio_gettime(&this_start, NULL);
2199 while (left && !fio_abort) {
2200 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
2205 for (i = 0; i < this_jobs; i++) {
2209 if (td->runstate == TD_INITIALIZED) {
2212 } else if (td->runstate >= TD_EXITED) {
2216 nr_running++; /* work-around... */
2222 log_err("fio: %d job%s failed to start\n", left,
2223 left > 1 ? "s" : "");
2224 for (i = 0; i < this_jobs; i++) {
2228 kill(td->pid, SIGTERM);
2234 * start created threads (TD_INITIALIZED -> TD_RUNNING).
2236 for_each_td(td, i) {
2237 if (td->runstate != TD_INITIALIZED)
2240 if (in_ramp_time(td))
2241 td_set_runstate(td, TD_RAMP);
2243 td_set_runstate(td, TD_RUNNING);
2246 m_rate += ddir_rw_sum(td->o.ratemin);
2247 t_rate += ddir_rw_sum(td->o.rate);
2249 fio_mutex_up(td->mutex);
2252 reap_threads(&nr_running, &t_rate, &m_rate);
2258 while (nr_running) {
2259 reap_threads(&nr_running, &t_rate, &m_rate);
2263 fio_idle_prof_stop();
2268 static void wait_for_helper_thread_exit(void)
2273 pthread_cond_signal(&helper_cond);
2274 pthread_join(helper_thread, &ret);
2277 static void free_disk_util(void)
2279 disk_util_prune_entries();
2281 pthread_cond_destroy(&helper_cond);
2284 static void *helper_thread_main(void *data)
2286 struct sk_out *sk_out = data;
2289 sk_out_assign(sk_out);
2291 fio_mutex_up(startup_mutex);
2294 uint64_t sec = DISK_UTIL_MSEC / 1000;
2295 uint64_t nsec = (DISK_UTIL_MSEC % 1000) * 1000000;
2299 gettimeofday(&tv, NULL);
2300 ts.tv_sec = tv.tv_sec + sec;
2301 ts.tv_nsec = (tv.tv_usec * 1000) + nsec;
2303 if (ts.tv_nsec >= 1000000000ULL) {
2304 ts.tv_nsec -= 1000000000ULL;
2308 pthread_cond_timedwait(&helper_cond, &helper_lock, &ts);
2310 ret = update_io_ticks();
2312 if (helper_do_stat) {
2314 __show_running_run_stats();
2318 print_thread_status();
2325 static int create_helper_thread(struct sk_out *sk_out)
2331 pthread_cond_init(&helper_cond, NULL);
2332 pthread_mutex_init(&helper_lock, NULL);
2334 ret = pthread_create(&helper_thread, NULL, helper_thread_main, sk_out);
2336 log_err("Can't create helper thread: %s\n", strerror(ret));
2340 dprint(FD_MUTEX, "wait on startup_mutex\n");
2341 fio_mutex_down(startup_mutex);
2342 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2346 int fio_backend(struct sk_out *sk_out)
2348 struct thread_data *td;
2352 if (load_profile(exec_profile))
2355 exec_profile = NULL;
2361 struct log_params p = {
2362 .log_type = IO_LOG_TYPE_BW,
2365 setup_log(&agg_io_log[DDIR_READ], &p, "agg-read_bw.log");
2366 setup_log(&agg_io_log[DDIR_WRITE], &p, "agg-write_bw.log");
2367 setup_log(&agg_io_log[DDIR_TRIM], &p, "agg-trim_bw.log");
2370 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
2371 if (startup_mutex == NULL)
2376 create_helper_thread(sk_out);
2378 cgroup_list = smalloc(sizeof(*cgroup_list));
2379 INIT_FLIST_HEAD(cgroup_list);
2381 run_threads(sk_out);
2383 wait_for_helper_thread_exit();
2388 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2389 struct io_log *log = agg_io_log[i];
2397 for_each_td(td, i) {
2398 fio_options_free(td);
2399 if (td->rusage_sem) {
2400 fio_mutex_remove(td->rusage_sem);
2401 td->rusage_sem = NULL;
2406 cgroup_kill(cgroup_list);
2410 fio_mutex_remove(startup_mutex);