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
40 #ifndef FIO_NO_HAVE_SHM_H
53 #include "lib/getrusage.h"
57 #include "workqueue.h"
58 #include "lib/mountcheck.h"
60 static pthread_t helper_thread;
61 static pthread_mutex_t helper_lock;
62 pthread_cond_t helper_cond;
63 int helper_do_stat = 0;
65 static struct fio_mutex *startup_mutex;
66 static struct flist_head *cgroup_list;
67 static char *cgroup_mnt;
68 static int exit_value;
69 static volatile int fio_abort;
70 static unsigned int nr_process = 0;
71 static unsigned int nr_thread = 0;
73 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
76 unsigned int thread_number = 0;
77 unsigned int stat_number = 0;
80 unsigned long done_secs = 0;
81 volatile int helper_exit = 0;
83 #define PAGE_ALIGN(buf) \
84 (char *) (((uintptr_t) (buf) + page_mask) & ~page_mask)
86 #define JOB_START_TIMEOUT (5 * 1000)
88 static void sig_int(int sig)
92 fio_server_got_signal(sig);
94 log_info("\nfio: terminating on signal %d\n", sig);
99 fio_terminate_threads(TERMINATE_ALL);
103 static void sig_show_status(int sig)
105 show_running_run_stats();
108 static void set_sig_handlers(void)
110 struct sigaction act;
112 memset(&act, 0, sizeof(act));
113 act.sa_handler = sig_int;
114 act.sa_flags = SA_RESTART;
115 sigaction(SIGINT, &act, NULL);
117 memset(&act, 0, sizeof(act));
118 act.sa_handler = sig_int;
119 act.sa_flags = SA_RESTART;
120 sigaction(SIGTERM, &act, NULL);
122 /* Windows uses SIGBREAK as a quit signal from other applications */
124 memset(&act, 0, sizeof(act));
125 act.sa_handler = sig_int;
126 act.sa_flags = SA_RESTART;
127 sigaction(SIGBREAK, &act, NULL);
130 memset(&act, 0, sizeof(act));
131 act.sa_handler = sig_show_status;
132 act.sa_flags = SA_RESTART;
133 sigaction(SIGUSR1, &act, NULL);
136 memset(&act, 0, sizeof(act));
137 act.sa_handler = sig_int;
138 act.sa_flags = SA_RESTART;
139 sigaction(SIGPIPE, &act, NULL);
144 * Check if we are above the minimum rate given.
146 static int __check_min_rate(struct thread_data *td, struct timeval *now,
149 unsigned long long bytes = 0;
150 unsigned long iops = 0;
153 unsigned int ratemin = 0;
154 unsigned int rate_iops = 0;
155 unsigned int rate_iops_min = 0;
157 assert(ddir_rw(ddir));
159 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
163 * allow a 2 second settle period in the beginning
165 if (mtime_since(&td->start, now) < 2000)
168 iops += td->this_io_blocks[ddir];
169 bytes += td->this_io_bytes[ddir];
170 ratemin += td->o.ratemin[ddir];
171 rate_iops += td->o.rate_iops[ddir];
172 rate_iops_min += td->o.rate_iops_min[ddir];
175 * if rate blocks is set, sample is running
177 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
178 spent = mtime_since(&td->lastrate[ddir], now);
179 if (spent < td->o.ratecycle)
182 if (td->o.rate[ddir]) {
184 * check bandwidth specified rate
186 if (bytes < td->rate_bytes[ddir]) {
187 log_err("%s: min rate %u not met\n", td->o.name,
192 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
196 if (rate < ratemin ||
197 bytes < td->rate_bytes[ddir]) {
198 log_err("%s: min rate %u not met, got"
199 " %luKB/sec\n", td->o.name,
206 * checks iops specified rate
208 if (iops < rate_iops) {
209 log_err("%s: min iops rate %u not met\n",
210 td->o.name, rate_iops);
214 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
218 if (rate < rate_iops_min ||
219 iops < td->rate_blocks[ddir]) {
220 log_err("%s: min iops rate %u not met,"
221 " got %lu\n", td->o.name,
222 rate_iops_min, rate);
228 td->rate_bytes[ddir] = bytes;
229 td->rate_blocks[ddir] = iops;
230 memcpy(&td->lastrate[ddir], now, sizeof(*now));
234 static int check_min_rate(struct thread_data *td, struct timeval *now)
238 if (td->bytes_done[DDIR_READ])
239 ret |= __check_min_rate(td, now, DDIR_READ);
240 if (td->bytes_done[DDIR_WRITE])
241 ret |= __check_min_rate(td, now, DDIR_WRITE);
242 if (td->bytes_done[DDIR_TRIM])
243 ret |= __check_min_rate(td, now, DDIR_TRIM);
249 * When job exits, we can cancel the in-flight IO if we are using async
250 * io. Attempt to do so.
252 static void cleanup_pending_aio(struct thread_data *td)
257 * get immediately available events, if any
259 r = io_u_queued_complete(td, 0);
264 * now cancel remaining active events
266 if (td->io_ops->cancel) {
270 io_u_qiter(&td->io_u_all, io_u, i) {
271 if (io_u->flags & IO_U_F_FLIGHT) {
272 r = td->io_ops->cancel(td, io_u);
280 r = io_u_queued_complete(td, td->cur_depth);
284 * Helper to handle the final sync of a file. Works just like the normal
285 * io path, just does everything sync.
287 static int fio_io_sync(struct thread_data *td, struct fio_file *f)
289 struct io_u *io_u = __get_io_u(td);
295 io_u->ddir = DDIR_SYNC;
298 if (td_io_prep(td, io_u)) {
304 ret = td_io_queue(td, io_u);
306 td_verror(td, io_u->error, "td_io_queue");
309 } else if (ret == FIO_Q_QUEUED) {
310 if (io_u_queued_complete(td, 1) < 0)
312 } else if (ret == FIO_Q_COMPLETED) {
314 td_verror(td, io_u->error, "td_io_queue");
318 if (io_u_sync_complete(td, io_u) < 0)
320 } else if (ret == FIO_Q_BUSY) {
321 if (td_io_commit(td))
329 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
333 if (fio_file_open(f))
334 return fio_io_sync(td, f);
336 if (td_io_open_file(td, f))
339 ret = fio_io_sync(td, f);
340 td_io_close_file(td, f);
344 static inline void __update_tv_cache(struct thread_data *td)
346 fio_gettime(&td->tv_cache, NULL);
349 static inline void update_tv_cache(struct thread_data *td)
351 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
352 __update_tv_cache(td);
355 static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
357 if (in_ramp_time(td))
361 if (utime_since(&td->epoch, t) >= td->o.timeout)
368 * We need to update the runtime consistently in ms, but keep a running
369 * tally of the current elapsed time in microseconds for sub millisecond
372 static inline void update_runtime(struct thread_data *td,
373 unsigned long long *elapsed_us,
374 const enum fio_ddir ddir)
376 if (ddir == DDIR_WRITE && td_write(td) && td->o.verify_only)
379 td->ts.runtime[ddir] -= (elapsed_us[ddir] + 999) / 1000;
380 elapsed_us[ddir] += utime_since_now(&td->start);
381 td->ts.runtime[ddir] += (elapsed_us[ddir] + 999) / 1000;
384 static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
389 if (ret < 0 || td->error) {
391 enum error_type_bit eb;
396 eb = td_error_type(ddir, err);
397 if (!(td->o.continue_on_error & (1 << eb)))
400 if (td_non_fatal_error(td, eb, err)) {
402 * Continue with the I/Os in case of
405 update_error_count(td, err);
409 } else if (td->o.fill_device && err == ENOSPC) {
411 * We expect to hit this error if
412 * fill_device option is set.
415 fio_mark_td_terminate(td);
419 * Stop the I/O in case of a fatal
422 update_error_count(td, err);
430 static void check_update_rusage(struct thread_data *td)
432 if (td->update_rusage) {
433 td->update_rusage = 0;
434 update_rusage_stat(td);
435 fio_mutex_up(td->rusage_sem);
439 static int wait_for_completions(struct thread_data *td, struct timeval *time)
441 const int full = queue_full(td);
446 * if the queue is full, we MUST reap at least 1 event
448 min_evts = min(td->o.iodepth_batch_complete, td->cur_depth);
449 if ((full && !min_evts) || !td->o.iodepth_batch_complete)
452 if (time && (__should_check_rate(td, DDIR_READ) ||
453 __should_check_rate(td, DDIR_WRITE) ||
454 __should_check_rate(td, DDIR_TRIM)))
455 fio_gettime(time, NULL);
458 ret = io_u_queued_complete(td, min_evts);
461 } while (full && (td->cur_depth > td->o.iodepth_low));
466 int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
467 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
468 struct timeval *comp_time)
473 case FIO_Q_COMPLETED:
476 clear_io_u(td, io_u);
477 } else if (io_u->resid) {
478 int bytes = io_u->xfer_buflen - io_u->resid;
479 struct fio_file *f = io_u->file;
482 *bytes_issued += bytes;
485 trim_io_piece(td, io_u);
492 unlog_io_piece(td, io_u);
493 td_verror(td, EIO, "full resid");
498 io_u->xfer_buflen = io_u->resid;
499 io_u->xfer_buf += bytes;
500 io_u->offset += bytes;
502 if (ddir_rw(io_u->ddir))
503 td->ts.short_io_u[io_u->ddir]++;
506 if (io_u->offset == f->real_file_size)
509 requeue_io_u(td, &io_u);
512 if (comp_time && (__should_check_rate(td, DDIR_READ) ||
513 __should_check_rate(td, DDIR_WRITE) ||
514 __should_check_rate(td, DDIR_TRIM)))
515 fio_gettime(comp_time, NULL);
517 *ret = io_u_sync_complete(td, io_u);
524 * if the engine doesn't have a commit hook,
525 * the io_u is really queued. if it does have such
526 * a hook, it has to call io_u_queued() itself.
528 if (td->io_ops->commit == NULL)
529 io_u_queued(td, io_u);
531 *bytes_issued += io_u->xfer_buflen;
535 unlog_io_piece(td, io_u);
536 requeue_io_u(td, &io_u);
537 ret2 = td_io_commit(td);
543 td_verror(td, -(*ret), "td_io_queue");
547 if (break_on_this_error(td, ddir, ret))
554 * The main verify engine. Runs over the writes we previously submitted,
555 * reads the blocks back in, and checks the crc/md5 of the data.
557 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
564 dprint(FD_VERIFY, "starting loop\n");
567 * sync io first and invalidate cache, to make sure we really
570 for_each_file(td, f, i) {
571 if (!fio_file_open(f))
573 if (fio_io_sync(td, f))
575 if (file_invalidate_cache(td, f))
579 check_update_rusage(td);
584 td_set_runstate(td, TD_VERIFYING);
587 while (!td->terminate) {
592 check_update_rusage(td);
594 if (runtime_exceeded(td, &td->tv_cache)) {
595 __update_tv_cache(td);
596 if (runtime_exceeded(td, &td->tv_cache)) {
597 fio_mark_td_terminate(td);
602 if (flow_threshold_exceeded(td))
605 if (!td->o.experimental_verify) {
606 io_u = __get_io_u(td);
610 if (get_next_verify(td, io_u)) {
615 if (td_io_prep(td, io_u)) {
620 if (ddir_rw_sum(td->bytes_done) + td->o.rw_min_bs > verify_bytes)
623 while ((io_u = get_io_u(td)) != NULL) {
631 * We are only interested in the places where
632 * we wrote or trimmed IOs. Turn those into
633 * reads for verification purposes.
635 if (io_u->ddir == DDIR_READ) {
637 * Pretend we issued it for rwmix
640 td->io_issues[DDIR_READ]++;
643 } else if (io_u->ddir == DDIR_TRIM) {
644 io_u->ddir = DDIR_READ;
645 io_u_set(io_u, IO_U_F_TRIMMED);
647 } else if (io_u->ddir == DDIR_WRITE) {
648 io_u->ddir = DDIR_READ;
660 if (verify_state_should_stop(td, io_u)) {
665 if (td->o.verify_async)
666 io_u->end_io = verify_io_u_async;
668 io_u->end_io = verify_io_u;
671 if (!td->o.disable_slat)
672 fio_gettime(&io_u->start_time, NULL);
674 ret = td_io_queue(td, io_u);
676 if (io_queue_event(td, io_u, &ret, ddir, NULL, 1, NULL))
680 * if we can queue more, do so. but check if there are
681 * completed io_u's first. Note that we can get BUSY even
682 * without IO queued, if the system is resource starved.
685 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
686 if (full || !td->o.iodepth_batch_complete)
687 ret = wait_for_completions(td, NULL);
693 check_update_rusage(td);
696 min_events = td->cur_depth;
699 ret = io_u_queued_complete(td, min_events);
701 cleanup_pending_aio(td);
703 td_set_runstate(td, TD_RUNNING);
705 dprint(FD_VERIFY, "exiting loop\n");
708 static unsigned int exceeds_number_ios(struct thread_data *td)
710 unsigned long long number_ios;
712 if (!td->o.number_ios)
715 number_ios = ddir_rw_sum(td->io_blocks);
716 number_ios += td->io_u_queued + td->io_u_in_flight;
718 return number_ios >= (td->o.number_ios * td->loops);
721 static int io_issue_bytes_exceeded(struct thread_data *td)
723 unsigned long long bytes, limit;
726 bytes = td->io_issue_bytes[DDIR_READ] + td->io_issue_bytes[DDIR_WRITE];
727 else if (td_write(td))
728 bytes = td->io_issue_bytes[DDIR_WRITE];
729 else if (td_read(td))
730 bytes = td->io_issue_bytes[DDIR_READ];
732 bytes = td->io_issue_bytes[DDIR_TRIM];
735 limit = td->o.io_limit;
740 return bytes >= limit || exceeds_number_ios(td);
743 static int io_complete_bytes_exceeded(struct thread_data *td)
745 unsigned long long bytes, limit;
748 bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE];
749 else if (td_write(td))
750 bytes = td->this_io_bytes[DDIR_WRITE];
751 else if (td_read(td))
752 bytes = td->this_io_bytes[DDIR_READ];
754 bytes = td->this_io_bytes[DDIR_TRIM];
757 limit = td->o.io_limit;
762 return bytes >= limit || exceeds_number_ios(td);
766 * used to calculate the next io time for rate control
769 static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
771 uint64_t secs, remainder, bps, bytes;
773 assert(!(td->flags & TD_F_CHILD));
774 bytes = td->rate_io_issue_bytes[ddir];
775 bps = td->rate_bps[ddir];
778 remainder = bytes % bps;
779 return remainder * 1000000 / bps + secs * 1000000;
785 * Main IO worker function. It retrieves io_u's to process and queues
786 * and reaps them, checking for rate and errors along the way.
788 * Returns number of bytes written and trimmed.
790 static uint64_t do_io(struct thread_data *td)
794 uint64_t total_bytes, bytes_issued = 0;
796 if (in_ramp_time(td))
797 td_set_runstate(td, TD_RAMP);
799 td_set_runstate(td, TD_RUNNING);
803 total_bytes = td->o.size;
805 * Allow random overwrite workloads to write up to io_limit
806 * before starting verification phase as 'size' doesn't apply.
808 if (td_write(td) && td_random(td) && td->o.norandommap)
809 total_bytes = max(total_bytes, (uint64_t) td->o.io_limit);
811 * If verify_backlog is enabled, we'll run the verify in this
812 * handler as well. For that case, we may need up to twice the
815 if (td->o.verify != VERIFY_NONE &&
816 (td_write(td) && td->o.verify_backlog))
817 total_bytes += td->o.size;
819 /* In trimwrite mode, each byte is trimmed and then written, so
820 * allow total_bytes to be twice as big */
821 if (td_trimwrite(td))
822 total_bytes += td->total_io_size;
824 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
825 (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) ||
827 struct timeval comp_time;
832 check_update_rusage(td);
834 if (td->terminate || td->done)
839 if (runtime_exceeded(td, &td->tv_cache)) {
840 __update_tv_cache(td);
841 if (runtime_exceeded(td, &td->tv_cache)) {
842 fio_mark_td_terminate(td);
847 if (flow_threshold_exceeded(td))
850 if (bytes_issued >= total_bytes)
854 if (IS_ERR_OR_NULL(io_u)) {
855 int err = PTR_ERR(io_u);
862 if (td->o.latency_target)
870 * Add verification end_io handler if:
871 * - Asked to verify (!td_rw(td))
872 * - Or the io_u is from our verify list (mixed write/ver)
874 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
875 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
877 if (!td->o.verify_pattern_bytes) {
878 io_u->rand_seed = __rand(&td->verify_state);
879 if (sizeof(int) != sizeof(long *))
880 io_u->rand_seed *= __rand(&td->verify_state);
883 if (verify_state_should_stop(td, io_u)) {
888 if (td->o.verify_async)
889 io_u->end_io = verify_io_u_async;
891 io_u->end_io = verify_io_u;
892 td_set_runstate(td, TD_VERIFYING);
893 } else if (in_ramp_time(td))
894 td_set_runstate(td, TD_RAMP);
896 td_set_runstate(td, TD_RUNNING);
899 * Always log IO before it's issued, so we know the specific
900 * order of it. The logged unit will track when the IO has
903 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
905 td->o.verify != VERIFY_NONE &&
906 !td->o.experimental_verify)
907 log_io_piece(td, io_u);
909 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
912 ret = workqueue_enqueue(&td->io_wq, io_u);
914 if (should_check_rate(td))
915 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
918 ret = td_io_queue(td, io_u);
920 if (should_check_rate(td))
921 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
923 if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
927 * See if we need to complete some commands. Note that
928 * we can get BUSY even without IO queued, if the
929 * system is resource starved.
932 full = queue_full(td) ||
933 (ret == FIO_Q_BUSY && td->cur_depth);
934 if (full || !td->o.iodepth_batch_complete)
935 ret = wait_for_completions(td, &comp_time);
939 if (!ddir_rw_sum(td->bytes_done) &&
940 !(td->io_ops->flags & FIO_NOIO))
943 if (!in_ramp_time(td) && should_check_rate(td)) {
944 if (check_min_rate(td, &comp_time)) {
945 if (exitall_on_terminate)
946 fio_terminate_threads(td->groupid);
947 td_verror(td, EIO, "check_min_rate");
951 if (!in_ramp_time(td) && td->o.latency_target)
952 lat_target_check(td);
954 if (td->o.thinktime) {
955 unsigned long long b;
957 b = ddir_rw_sum(td->io_blocks);
958 if (!(b % td->o.thinktime_blocks)) {
963 if (td->o.thinktime_spin)
964 usec_spin(td->o.thinktime_spin);
966 left = td->o.thinktime - td->o.thinktime_spin;
968 usec_sleep(td, left);
973 check_update_rusage(td);
975 if (td->trim_entries)
976 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
978 if (td->o.fill_device && td->error == ENOSPC) {
980 fio_mark_td_terminate(td);
985 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
986 workqueue_flush(&td->io_wq);
992 ret = io_u_queued_complete(td, i);
993 if (td->o.fill_device && td->error == ENOSPC)
997 if (should_fsync(td) && td->o.end_fsync) {
998 td_set_runstate(td, TD_FSYNCING);
1000 for_each_file(td, f, i) {
1001 if (!fio_file_fsync(td, f))
1004 log_err("fio: end_fsync failed for file %s\n",
1009 cleanup_pending_aio(td);
1012 * stop job if we failed doing any IO
1014 if (!ddir_rw_sum(td->this_io_bytes))
1017 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1020 static void cleanup_io_u(struct thread_data *td)
1024 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
1026 if (td->io_ops->io_u_free)
1027 td->io_ops->io_u_free(td, io_u);
1029 fio_memfree(io_u, sizeof(*io_u));
1034 io_u_rexit(&td->io_u_requeues);
1035 io_u_qexit(&td->io_u_freelist);
1036 io_u_qexit(&td->io_u_all);
1038 if (td->last_write_comp)
1039 sfree(td->last_write_comp);
1042 static int init_io_u(struct thread_data *td)
1045 unsigned int max_bs, min_write;
1046 int cl_align, i, max_units;
1047 int data_xfer = 1, err;
1050 max_units = td->o.iodepth;
1051 max_bs = td_max_bs(td);
1052 min_write = td->o.min_bs[DDIR_WRITE];
1053 td->orig_buffer_size = (unsigned long long) max_bs
1054 * (unsigned long long) max_units;
1056 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
1060 err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
1061 err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
1062 err += io_u_qinit(&td->io_u_all, td->o.iodepth);
1065 log_err("fio: failed setting up IO queues\n");
1070 * if we may later need to do address alignment, then add any
1071 * possible adjustment here so that we don't cause a buffer
1072 * overflow later. this adjustment may be too much if we get
1073 * lucky and the allocator gives us an aligned address.
1075 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1076 (td->io_ops->flags & FIO_RAWIO))
1077 td->orig_buffer_size += page_mask + td->o.mem_align;
1079 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1082 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1083 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1086 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1087 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1091 if (data_xfer && allocate_io_mem(td))
1094 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1095 (td->io_ops->flags & FIO_RAWIO))
1096 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
1098 p = td->orig_buffer;
1100 cl_align = os_cache_line_size();
1102 for (i = 0; i < max_units; i++) {
1108 ptr = fio_memalign(cl_align, sizeof(*io_u));
1110 log_err("fio: unable to allocate aligned memory\n");
1115 memset(io_u, 0, sizeof(*io_u));
1116 INIT_FLIST_HEAD(&io_u->verify_list);
1117 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1121 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1124 io_u_fill_buffer(td, io_u, min_write, max_bs);
1125 if (td_write(td) && td->o.verify_pattern_bytes) {
1127 * Fill the buffer with the pattern if we are
1128 * going to be doing writes.
1130 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1135 io_u->flags = IO_U_F_FREE;
1136 io_u_qpush(&td->io_u_freelist, io_u);
1139 * io_u never leaves this stack, used for iteration of all
1142 io_u_qpush(&td->io_u_all, io_u);
1144 if (td->io_ops->io_u_init) {
1145 int ret = td->io_ops->io_u_init(td, io_u);
1148 log_err("fio: failed to init engine data: %d\n", ret);
1156 if (td->o.verify != VERIFY_NONE) {
1157 td->last_write_comp = scalloc(max_units, sizeof(uint64_t));
1158 if (!td->last_write_comp) {
1159 log_err("fio: failed to alloc write comp data\n");
1167 static int switch_ioscheduler(struct thread_data *td)
1169 char tmp[256], tmp2[128];
1173 if (td->io_ops->flags & FIO_DISKLESSIO)
1176 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
1178 f = fopen(tmp, "r+");
1180 if (errno == ENOENT) {
1181 log_err("fio: os or kernel doesn't support IO scheduler"
1185 td_verror(td, errno, "fopen iosched");
1192 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1193 if (ferror(f) || ret != 1) {
1194 td_verror(td, errno, "fwrite");
1202 * Read back and check that the selected scheduler is now the default.
1204 memset(tmp, 0, sizeof(tmp));
1205 ret = fread(tmp, sizeof(tmp), 1, f);
1206 if (ferror(f) || ret < 0) {
1207 td_verror(td, errno, "fread");
1212 * either a list of io schedulers or "none\n" is expected.
1214 tmp[strlen(tmp) - 1] = '\0';
1217 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1218 if (!strstr(tmp, tmp2)) {
1219 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1220 td_verror(td, EINVAL, "iosched_switch");
1229 static int keep_running(struct thread_data *td)
1231 unsigned long long limit;
1235 if (td->o.time_based)
1241 if (exceeds_number_ios(td))
1245 limit = td->o.io_limit;
1249 if (limit != -1ULL && ddir_rw_sum(td->io_bytes) < limit) {
1253 * If the difference is less than the minimum IO size, we
1256 diff = limit - ddir_rw_sum(td->io_bytes);
1257 if (diff < td_max_bs(td))
1260 if (fio_files_done(td))
1269 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1271 size_t newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1275 str = malloc(newlen);
1276 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1278 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1281 log_err("fio: exec of cmd <%s> failed\n", str);
1288 * Dry run to compute correct state of numberio for verification.
1290 static uint64_t do_dry_run(struct thread_data *td)
1292 td_set_runstate(td, TD_RUNNING);
1294 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1295 (!flist_empty(&td->trim_list)) || !io_complete_bytes_exceeded(td)) {
1299 if (td->terminate || td->done)
1302 io_u = get_io_u(td);
1306 io_u_set(io_u, IO_U_F_FLIGHT);
1309 if (ddir_rw(acct_ddir(io_u)))
1310 td->io_issues[acct_ddir(io_u)]++;
1311 if (ddir_rw(io_u->ddir)) {
1312 io_u_mark_depth(td, 1);
1313 td->ts.total_io_u[io_u->ddir]++;
1316 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1318 td->o.verify != VERIFY_NONE &&
1319 !td->o.experimental_verify)
1320 log_io_piece(td, io_u);
1322 ret = io_u_sync_complete(td, io_u);
1326 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1329 static void io_workqueue_fn(struct thread_data *td, struct io_u *io_u)
1331 const enum fio_ddir ddir = io_u->ddir;
1334 dprint(FD_RATE, "io_u %p queued by %u\n", io_u, gettid());
1336 io_u_set(io_u, IO_U_F_NO_FILE_PUT);
1340 ret = td_io_queue(td, io_u);
1342 dprint(FD_RATE, "io_u %p ret %d by %u\n", io_u, ret, gettid());
1344 io_queue_event(td, io_u, &ret, ddir, NULL, 0, NULL);
1346 if (ret == FIO_Q_QUEUED)
1347 ret = io_u_queued_complete(td, 1);
1353 * Entry point for the thread based jobs. The process based jobs end up
1354 * here as well, after a little setup.
1356 static void *thread_main(void *data)
1358 unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
1359 struct thread_data *td = data;
1360 struct thread_options *o = &td->o;
1361 pthread_condattr_t attr;
1365 if (!o->use_thread) {
1371 fio_local_clock_init(o->use_thread);
1373 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1376 fio_server_send_start(td);
1378 INIT_FLIST_HEAD(&td->io_log_list);
1379 INIT_FLIST_HEAD(&td->io_hist_list);
1380 INIT_FLIST_HEAD(&td->verify_list);
1381 INIT_FLIST_HEAD(&td->trim_list);
1382 INIT_FLIST_HEAD(&td->next_rand_list);
1383 pthread_mutex_init(&td->io_u_lock, NULL);
1384 td->io_hist_tree = RB_ROOT;
1386 pthread_condattr_init(&attr);
1387 pthread_cond_init(&td->verify_cond, &attr);
1388 pthread_cond_init(&td->free_cond, &attr);
1390 td_set_runstate(td, TD_INITIALIZED);
1391 dprint(FD_MUTEX, "up startup_mutex\n");
1392 fio_mutex_up(startup_mutex);
1393 dprint(FD_MUTEX, "wait on td->mutex\n");
1394 fio_mutex_down(td->mutex);
1395 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1398 * A new gid requires privilege, so we need to do this before setting
1401 if (o->gid != -1U && setgid(o->gid)) {
1402 td_verror(td, errno, "setgid");
1405 if (o->uid != -1U && setuid(o->uid)) {
1406 td_verror(td, errno, "setuid");
1411 * If we have a gettimeofday() thread, make sure we exclude that
1412 * thread from this job
1415 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1418 * Set affinity first, in case it has an impact on the memory
1421 if (fio_option_is_set(o, cpumask)) {
1422 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1423 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1425 log_err("fio: no CPUs set\n");
1426 log_err("fio: Try increasing number of available CPUs\n");
1427 td_verror(td, EINVAL, "cpus_split");
1431 ret = fio_setaffinity(td->pid, o->cpumask);
1433 td_verror(td, errno, "cpu_set_affinity");
1438 #ifdef CONFIG_LIBNUMA
1439 /* numa node setup */
1440 if (fio_option_is_set(o, numa_cpunodes) ||
1441 fio_option_is_set(o, numa_memnodes)) {
1442 struct bitmask *mask;
1444 if (numa_available() < 0) {
1445 td_verror(td, errno, "Does not support NUMA API\n");
1449 if (fio_option_is_set(o, numa_cpunodes)) {
1450 mask = numa_parse_nodestring(o->numa_cpunodes);
1451 ret = numa_run_on_node_mask(mask);
1452 numa_free_nodemask(mask);
1454 td_verror(td, errno, \
1455 "numa_run_on_node_mask failed\n");
1460 if (fio_option_is_set(o, numa_memnodes)) {
1462 if (o->numa_memnodes)
1463 mask = numa_parse_nodestring(o->numa_memnodes);
1465 switch (o->numa_mem_mode) {
1466 case MPOL_INTERLEAVE:
1467 numa_set_interleave_mask(mask);
1470 numa_set_membind(mask);
1473 numa_set_localalloc();
1475 case MPOL_PREFERRED:
1476 numa_set_preferred(o->numa_mem_prefer_node);
1484 numa_free_nodemask(mask);
1490 if (fio_pin_memory(td))
1494 * May alter parameters that init_io_u() will use, so we need to
1503 if (o->verify_async && verify_async_init(td))
1506 if (fio_option_is_set(o, ioprio) ||
1507 fio_option_is_set(o, ioprio_class)) {
1508 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1510 td_verror(td, errno, "ioprio_set");
1515 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1519 if (nice(o->nice) == -1 && errno != 0) {
1520 td_verror(td, errno, "nice");
1524 if (o->ioscheduler && switch_ioscheduler(td))
1527 if (!o->create_serialize && setup_files(td))
1533 if (init_random_map(td))
1536 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1540 if (pre_read_files(td) < 0)
1544 if (td->flags & TD_F_COMPRESS_LOG)
1545 tp_init(&td->tp_data);
1547 fio_verify_init(td);
1549 if ((o->io_submit_mode == IO_MODE_OFFLOAD) &&
1550 workqueue_init(td, &td->io_wq, io_workqueue_fn, td->o.iodepth))
1553 fio_gettime(&td->epoch, NULL);
1554 fio_getrusage(&td->ru_start);
1556 while (keep_running(td)) {
1557 uint64_t verify_bytes;
1559 fio_gettime(&td->start, NULL);
1560 memcpy(&td->bw_sample_time, &td->start, sizeof(td->start));
1561 memcpy(&td->iops_sample_time, &td->start, sizeof(td->start));
1562 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1564 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1565 o->ratemin[DDIR_TRIM]) {
1566 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1567 sizeof(td->bw_sample_time));
1568 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1569 sizeof(td->bw_sample_time));
1570 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1571 sizeof(td->bw_sample_time));
1577 prune_io_piece_log(td);
1579 if (td->o.verify_only && (td_write(td) || td_rw(td)))
1580 verify_bytes = do_dry_run(td);
1582 verify_bytes = do_io(td);
1587 * Make sure we've successfully updated the rusage stats
1588 * before waiting on the stat mutex. Otherwise we could have
1589 * the stat thread holding stat mutex and waiting for
1590 * the rusage_sem, which would never get upped because
1591 * this thread is waiting for the stat mutex.
1593 check_update_rusage(td);
1595 fio_mutex_down(stat_mutex);
1596 if (td_read(td) && td->io_bytes[DDIR_READ])
1597 update_runtime(td, elapsed_us, DDIR_READ);
1598 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1599 update_runtime(td, elapsed_us, DDIR_WRITE);
1600 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1601 update_runtime(td, elapsed_us, DDIR_TRIM);
1602 fio_gettime(&td->start, NULL);
1603 fio_mutex_up(stat_mutex);
1605 if (td->error || td->terminate)
1608 if (!o->do_verify ||
1609 o->verify == VERIFY_NONE ||
1610 (td->io_ops->flags & FIO_UNIDIR))
1615 fio_gettime(&td->start, NULL);
1617 do_verify(td, verify_bytes);
1620 * See comment further up for why this is done here.
1622 check_update_rusage(td);
1624 fio_mutex_down(stat_mutex);
1625 update_runtime(td, elapsed_us, DDIR_READ);
1626 fio_gettime(&td->start, NULL);
1627 fio_mutex_up(stat_mutex);
1629 if (td->error || td->terminate)
1633 update_rusage_stat(td);
1634 td->ts.total_run_time = mtime_since_now(&td->epoch);
1635 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1636 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1637 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1639 if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
1640 (td->o.verify != VERIFY_NONE && td_write(td))) {
1641 struct all_io_list *state;
1644 state = get_all_io_list(td->thread_number, &sz);
1646 __verify_save_state(state, "local");
1651 fio_unpin_memory(td);
1653 fio_writeout_logs(td);
1655 if (o->io_submit_mode == IO_MODE_OFFLOAD)
1656 workqueue_exit(&td->io_wq);
1658 if (td->flags & TD_F_COMPRESS_LOG)
1659 tp_exit(&td->tp_data);
1661 if (o->exec_postrun)
1662 exec_string(o, o->exec_postrun, (const char *)"postrun");
1664 if (exitall_on_terminate)
1665 fio_terminate_threads(td->groupid);
1669 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1672 if (o->verify_async)
1673 verify_async_exit(td);
1675 close_and_free_files(td);
1678 cgroup_shutdown(td, &cgroup_mnt);
1679 verify_free_state(td);
1681 if (fio_option_is_set(o, cpumask)) {
1682 ret = fio_cpuset_exit(&o->cpumask);
1684 td_verror(td, ret, "fio_cpuset_exit");
1688 * do this very late, it will log file closing as well
1690 if (o->write_iolog_file)
1691 write_iolog_close(td);
1693 fio_mutex_remove(td->mutex);
1696 td_set_runstate(td, TD_EXITED);
1699 * Do this last after setting our runstate to exited, so we
1700 * know that the stat thread is signaled.
1702 check_update_rusage(td);
1704 return (void *) (uintptr_t) td->error;
1709 * We cannot pass the td data into a forked process, so attach the td and
1710 * pass it to the thread worker.
1712 static int fork_main(int shmid, int offset)
1714 struct thread_data *td;
1717 #if !defined(__hpux) && !defined(CONFIG_NO_SHM)
1718 data = shmat(shmid, NULL, 0);
1719 if (data == (void *) -1) {
1727 * HP-UX inherits shm mappings?
1732 td = data + offset * sizeof(struct thread_data);
1733 ret = thread_main(td);
1735 return (int) (uintptr_t) ret;
1738 static void dump_td_info(struct thread_data *td)
1740 log_err("fio: job '%s' hasn't exited in %lu seconds, it appears to "
1741 "be stuck. Doing forceful exit of this job.\n", td->o.name,
1742 (unsigned long) time_since_now(&td->terminate_time));
1746 * Run over the job map and reap the threads that have exited, if any.
1748 static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1749 unsigned int *m_rate)
1751 struct thread_data *td;
1752 unsigned int cputhreads, realthreads, pending;
1756 * reap exited threads (TD_EXITED -> TD_REAPED)
1758 realthreads = pending = cputhreads = 0;
1759 for_each_td(td, i) {
1763 * ->io_ops is NULL for a thread that has closed its
1766 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1775 if (td->runstate == TD_REAPED)
1777 if (td->o.use_thread) {
1778 if (td->runstate == TD_EXITED) {
1779 td_set_runstate(td, TD_REAPED);
1786 if (td->runstate == TD_EXITED)
1790 * check if someone quit or got killed in an unusual way
1792 ret = waitpid(td->pid, &status, flags);
1794 if (errno == ECHILD) {
1795 log_err("fio: pid=%d disappeared %d\n",
1796 (int) td->pid, td->runstate);
1798 td_set_runstate(td, TD_REAPED);
1802 } else if (ret == td->pid) {
1803 if (WIFSIGNALED(status)) {
1804 int sig = WTERMSIG(status);
1806 if (sig != SIGTERM && sig != SIGUSR2)
1807 log_err("fio: pid=%d, got signal=%d\n",
1808 (int) td->pid, sig);
1810 td_set_runstate(td, TD_REAPED);
1813 if (WIFEXITED(status)) {
1814 if (WEXITSTATUS(status) && !td->error)
1815 td->error = WEXITSTATUS(status);
1817 td_set_runstate(td, TD_REAPED);
1823 * If the job is stuck, do a forceful timeout of it and
1826 if (td->terminate &&
1827 time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) {
1829 td_set_runstate(td, TD_REAPED);
1834 * thread is not dead, continue
1840 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1841 (*t_rate) -= ddir_rw_sum(td->o.rate);
1848 done_secs += mtime_since_now(&td->epoch) / 1000;
1849 profile_td_exit(td);
1852 if (*nr_running == cputhreads && !pending && realthreads)
1853 fio_terminate_threads(TERMINATE_ALL);
1856 static int __check_trigger_file(void)
1863 if (stat(trigger_file, &sb))
1866 if (unlink(trigger_file) < 0)
1867 log_err("fio: failed to unlink %s: %s\n", trigger_file,
1873 static int trigger_timedout(void)
1875 if (trigger_timeout)
1876 return time_since_genesis() >= trigger_timeout;
1881 void exec_trigger(const char *cmd)
1890 log_err("fio: failed executing %s trigger\n", cmd);
1893 void check_trigger_file(void)
1895 if (__check_trigger_file() || trigger_timedout()) {
1897 fio_clients_send_trigger(trigger_remote_cmd);
1899 verify_save_state();
1900 fio_terminate_threads(TERMINATE_ALL);
1901 exec_trigger(trigger_cmd);
1906 static int fio_verify_load_state(struct thread_data *td)
1910 if (!td->o.verify_state)
1917 ret = fio_server_get_verify_state(td->o.name,
1918 td->thread_number - 1, &data, &ver);
1920 verify_convert_assign_state(td, data, ver);
1922 ret = verify_load_state(td, "local");
1927 static void do_usleep(unsigned int usecs)
1929 check_for_running_stats();
1930 check_trigger_file();
1934 static int check_mount_writes(struct thread_data *td)
1939 if (!td_write(td) || td->o.allow_mounted_write)
1942 for_each_file(td, f, i) {
1943 if (f->filetype != FIO_TYPE_BD)
1945 if (device_is_mounted(f->file_name))
1951 log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.", f->file_name);
1956 * Main function for kicking off and reaping jobs, as needed.
1958 static void run_threads(void)
1960 struct thread_data *td;
1961 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
1964 if (fio_gtod_offload && fio_start_gtod_thread())
1967 fio_idle_prof_init();
1971 nr_thread = nr_process = 0;
1972 for_each_td(td, i) {
1973 if (check_mount_writes(td))
1975 if (td->o.use_thread)
1981 if (output_format == FIO_OUTPUT_NORMAL) {
1982 log_info("Starting ");
1984 log_info("%d thread%s", nr_thread,
1985 nr_thread > 1 ? "s" : "");
1989 log_info("%d process%s", nr_process,
1990 nr_process > 1 ? "es" : "");
1996 todo = thread_number;
1999 m_rate = t_rate = 0;
2001 for_each_td(td, i) {
2002 print_status_init(td->thread_number - 1);
2004 if (!td->o.create_serialize)
2007 if (fio_verify_load_state(td))
2011 * do file setup here so it happens sequentially,
2012 * we don't want X number of threads getting their
2013 * client data interspersed on disk
2015 if (setup_files(td)) {
2019 log_err("fio: pid=%d, err=%d/%s\n",
2020 (int) td->pid, td->error, td->verror);
2021 td_set_runstate(td, TD_REAPED);
2028 * for sharing to work, each job must always open
2029 * its own files. so close them, if we opened them
2032 for_each_file(td, f, j) {
2033 if (fio_file_open(f))
2034 td_io_close_file(td, f);
2039 /* start idle threads before io threads start to run */
2040 fio_idle_prof_start();
2045 struct thread_data *map[REAL_MAX_JOBS];
2046 struct timeval this_start;
2047 int this_jobs = 0, left;
2050 * create threads (TD_NOT_CREATED -> TD_CREATED)
2052 for_each_td(td, i) {
2053 if (td->runstate != TD_NOT_CREATED)
2057 * never got a chance to start, killed by other
2058 * thread for some reason
2060 if (td->terminate) {
2065 if (td->o.start_delay) {
2066 spent = utime_since_genesis();
2068 if (td->o.start_delay > spent)
2072 if (td->o.stonewall && (nr_started || nr_running)) {
2073 dprint(FD_PROCESS, "%s: stonewall wait\n",
2080 td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
2081 td->update_rusage = 0;
2084 * Set state to created. Thread will transition
2085 * to TD_INITIALIZED when it's done setting up.
2087 td_set_runstate(td, TD_CREATED);
2088 map[this_jobs++] = td;
2091 if (td->o.use_thread) {
2094 dprint(FD_PROCESS, "will pthread_create\n");
2095 ret = pthread_create(&td->thread, NULL,
2098 log_err("pthread_create: %s\n",
2103 ret = pthread_detach(td->thread);
2105 log_err("pthread_detach: %s",
2109 dprint(FD_PROCESS, "will fork\n");
2112 int ret = fork_main(shm_id, i);
2115 } else if (i == fio_debug_jobno)
2116 *fio_debug_jobp = pid;
2118 dprint(FD_MUTEX, "wait on startup_mutex\n");
2119 if (fio_mutex_down_timeout(startup_mutex, 10)) {
2120 log_err("fio: job startup hung? exiting.\n");
2121 fio_terminate_threads(TERMINATE_ALL);
2126 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2130 * Wait for the started threads to transition to
2133 fio_gettime(&this_start, NULL);
2135 while (left && !fio_abort) {
2136 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
2141 for (i = 0; i < this_jobs; i++) {
2145 if (td->runstate == TD_INITIALIZED) {
2148 } else if (td->runstate >= TD_EXITED) {
2152 nr_running++; /* work-around... */
2158 log_err("fio: %d job%s failed to start\n", left,
2159 left > 1 ? "s" : "");
2160 for (i = 0; i < this_jobs; i++) {
2164 kill(td->pid, SIGTERM);
2170 * start created threads (TD_INITIALIZED -> TD_RUNNING).
2172 for_each_td(td, i) {
2173 if (td->runstate != TD_INITIALIZED)
2176 if (in_ramp_time(td))
2177 td_set_runstate(td, TD_RAMP);
2179 td_set_runstate(td, TD_RUNNING);
2182 m_rate += ddir_rw_sum(td->o.ratemin);
2183 t_rate += ddir_rw_sum(td->o.rate);
2185 fio_mutex_up(td->mutex);
2188 reap_threads(&nr_running, &t_rate, &m_rate);
2194 while (nr_running) {
2195 reap_threads(&nr_running, &t_rate, &m_rate);
2199 fio_idle_prof_stop();
2204 static void wait_for_helper_thread_exit(void)
2209 pthread_cond_signal(&helper_cond);
2210 pthread_join(helper_thread, &ret);
2213 static void free_disk_util(void)
2215 disk_util_prune_entries();
2217 pthread_cond_destroy(&helper_cond);
2220 static void *helper_thread_main(void *data)
2224 fio_mutex_up(startup_mutex);
2227 uint64_t sec = DISK_UTIL_MSEC / 1000;
2228 uint64_t nsec = (DISK_UTIL_MSEC % 1000) * 1000000;
2232 gettimeofday(&tv, NULL);
2233 ts.tv_sec = tv.tv_sec + sec;
2234 ts.tv_nsec = (tv.tv_usec * 1000) + nsec;
2236 if (ts.tv_nsec >= 1000000000ULL) {
2237 ts.tv_nsec -= 1000000000ULL;
2241 pthread_cond_timedwait(&helper_cond, &helper_lock, &ts);
2243 ret = update_io_ticks();
2245 if (helper_do_stat) {
2247 __show_running_run_stats();
2251 print_thread_status();
2257 static int create_helper_thread(void)
2263 pthread_cond_init(&helper_cond, NULL);
2264 pthread_mutex_init(&helper_lock, NULL);
2266 ret = pthread_create(&helper_thread, NULL, helper_thread_main, NULL);
2268 log_err("Can't create helper thread: %s\n", strerror(ret));
2272 dprint(FD_MUTEX, "wait on startup_mutex\n");
2273 fio_mutex_down(startup_mutex);
2274 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2278 int fio_backend(void)
2280 struct thread_data *td;
2284 if (load_profile(exec_profile))
2287 exec_profile = NULL;
2293 struct log_params p = {
2294 .log_type = IO_LOG_TYPE_BW,
2297 setup_log(&agg_io_log[DDIR_READ], &p, "agg-read_bw.log");
2298 setup_log(&agg_io_log[DDIR_WRITE], &p, "agg-write_bw.log");
2299 setup_log(&agg_io_log[DDIR_TRIM], &p, "agg-trim_bw.log");
2302 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
2303 if (startup_mutex == NULL)
2308 create_helper_thread();
2310 cgroup_list = smalloc(sizeof(*cgroup_list));
2311 INIT_FLIST_HEAD(cgroup_list);
2315 wait_for_helper_thread_exit();
2320 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2321 struct io_log *log = agg_io_log[i];
2329 for_each_td(td, i) {
2330 fio_options_free(td);
2331 if (td->rusage_sem) {
2332 fio_mutex_remove(td->rusage_sem);
2333 td->rusage_sem = NULL;
2338 cgroup_kill(cgroup_list);
2342 fio_mutex_remove(startup_mutex);