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 uint64_t do_io(struct thread_data *td)
815 uint64_t total_bytes, bytes_issued = 0;
817 if (in_ramp_time(td))
818 td_set_runstate(td, TD_RAMP);
820 td_set_runstate(td, TD_RUNNING);
824 total_bytes = td->o.size;
826 * Allow random overwrite workloads to write up to io_limit
827 * before starting verification phase as 'size' doesn't apply.
829 if (td_write(td) && td_random(td) && td->o.norandommap)
830 total_bytes = max(total_bytes, (uint64_t) td->o.io_limit);
832 * If verify_backlog is enabled, we'll run the verify in this
833 * handler as well. For that case, we may need up to twice the
836 if (td->o.verify != VERIFY_NONE &&
837 (td_write(td) && td->o.verify_backlog))
838 total_bytes += td->o.size;
840 /* In trimwrite mode, each byte is trimmed and then written, so
841 * allow total_bytes to be twice as big */
842 if (td_trimwrite(td))
843 total_bytes += td->total_io_size;
845 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
846 (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) ||
848 struct timeval comp_time;
853 check_update_rusage(td);
855 if (td->terminate || td->done)
860 if (runtime_exceeded(td, &td->tv_cache)) {
861 __update_tv_cache(td);
862 if (runtime_exceeded(td, &td->tv_cache)) {
863 fio_mark_td_terminate(td);
868 if (flow_threshold_exceeded(td))
871 if (!td->o.time_based && bytes_issued >= total_bytes)
875 if (IS_ERR_OR_NULL(io_u)) {
876 int err = PTR_ERR(io_u);
883 if (td->o.latency_target)
891 * Add verification end_io handler if:
892 * - Asked to verify (!td_rw(td))
893 * - Or the io_u is from our verify list (mixed write/ver)
895 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
896 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
898 if (!td->o.verify_pattern_bytes) {
899 io_u->rand_seed = __rand(&td->verify_state);
900 if (sizeof(int) != sizeof(long *))
901 io_u->rand_seed *= __rand(&td->verify_state);
904 if (verify_state_should_stop(td, io_u)) {
909 if (td->o.verify_async)
910 io_u->end_io = verify_io_u_async;
912 io_u->end_io = verify_io_u;
913 td_set_runstate(td, TD_VERIFYING);
914 } else if (in_ramp_time(td))
915 td_set_runstate(td, TD_RAMP);
917 td_set_runstate(td, TD_RUNNING);
920 * Always log IO before it's issued, so we know the specific
921 * order of it. The logged unit will track when the IO has
924 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
926 td->o.verify != VERIFY_NONE &&
927 !td->o.experimental_verify)
928 log_io_piece(td, io_u);
930 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
931 const unsigned long blen = io_u->xfer_buflen;
932 const enum fio_ddir ddir = acct_ddir(io_u);
937 workqueue_enqueue(&td->io_wq, &io_u->work);
941 td->io_issues[ddir]++;
942 td->io_issue_bytes[ddir] += blen;
943 td->rate_io_issue_bytes[ddir] += blen;
946 if (should_check_rate(td))
947 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
950 ret = td_io_queue(td, io_u);
952 if (should_check_rate(td))
953 td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
955 if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
959 * See if we need to complete some commands. Note that
960 * we can get BUSY even without IO queued, if the
961 * system is resource starved.
964 full = queue_full(td) ||
965 (ret == FIO_Q_BUSY && td->cur_depth);
966 if (full || io_in_polling(td))
967 ret = wait_for_completions(td, &comp_time);
971 if (!ddir_rw_sum(td->bytes_done) &&
972 !(td->io_ops->flags & FIO_NOIO))
975 if (!in_ramp_time(td) && should_check_rate(td)) {
976 if (check_min_rate(td, &comp_time)) {
977 if (exitall_on_terminate || td->o.exitall_error)
978 fio_terminate_threads(td->groupid);
979 td_verror(td, EIO, "check_min_rate");
983 if (!in_ramp_time(td) && td->o.latency_target)
984 lat_target_check(td);
986 if (td->o.thinktime) {
987 unsigned long long b;
989 b = ddir_rw_sum(td->io_blocks);
990 if (!(b % td->o.thinktime_blocks)) {
995 if (td->o.thinktime_spin)
996 usec_spin(td->o.thinktime_spin);
998 left = td->o.thinktime - td->o.thinktime_spin;
1000 usec_sleep(td, left);
1005 check_update_rusage(td);
1007 if (td->trim_entries)
1008 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
1010 if (td->o.fill_device && td->error == ENOSPC) {
1012 fio_mark_td_terminate(td);
1017 if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
1018 workqueue_flush(&td->io_wq);
1024 ret = io_u_queued_complete(td, i);
1025 if (td->o.fill_device && td->error == ENOSPC)
1029 if (should_fsync(td) && td->o.end_fsync) {
1030 td_set_runstate(td, TD_FSYNCING);
1032 for_each_file(td, f, i) {
1033 if (!fio_file_fsync(td, f))
1036 log_err("fio: end_fsync failed for file %s\n",
1041 cleanup_pending_aio(td);
1044 * stop job if we failed doing any IO
1046 if (!ddir_rw_sum(td->this_io_bytes))
1049 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1052 static void cleanup_io_u(struct thread_data *td)
1056 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
1058 if (td->io_ops->io_u_free)
1059 td->io_ops->io_u_free(td, io_u);
1061 fio_memfree(io_u, sizeof(*io_u));
1066 io_u_rexit(&td->io_u_requeues);
1067 io_u_qexit(&td->io_u_freelist);
1068 io_u_qexit(&td->io_u_all);
1070 if (td->last_write_comp)
1071 sfree(td->last_write_comp);
1074 static int init_io_u(struct thread_data *td)
1077 unsigned int max_bs, min_write;
1078 int cl_align, i, max_units;
1079 int data_xfer = 1, err;
1082 max_units = td->o.iodepth;
1083 max_bs = td_max_bs(td);
1084 min_write = td->o.min_bs[DDIR_WRITE];
1085 td->orig_buffer_size = (unsigned long long) max_bs
1086 * (unsigned long long) max_units;
1088 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
1092 err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
1093 err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
1094 err += io_u_qinit(&td->io_u_all, td->o.iodepth);
1097 log_err("fio: failed setting up IO queues\n");
1102 * if we may later need to do address alignment, then add any
1103 * possible adjustment here so that we don't cause a buffer
1104 * overflow later. this adjustment may be too much if we get
1105 * lucky and the allocator gives us an aligned address.
1107 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1108 (td->io_ops->flags & FIO_RAWIO))
1109 td->orig_buffer_size += page_mask + td->o.mem_align;
1111 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
1114 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1115 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1118 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1119 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1123 if (data_xfer && allocate_io_mem(td))
1126 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1127 (td->io_ops->flags & FIO_RAWIO))
1128 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
1130 p = td->orig_buffer;
1132 cl_align = os_cache_line_size();
1134 for (i = 0; i < max_units; i++) {
1140 ptr = fio_memalign(cl_align, sizeof(*io_u));
1142 log_err("fio: unable to allocate aligned memory\n");
1147 memset(io_u, 0, sizeof(*io_u));
1148 INIT_FLIST_HEAD(&io_u->verify_list);
1149 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1153 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1156 io_u_fill_buffer(td, io_u, min_write, max_bs);
1157 if (td_write(td) && td->o.verify_pattern_bytes) {
1159 * Fill the buffer with the pattern if we are
1160 * going to be doing writes.
1162 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1167 io_u->flags = IO_U_F_FREE;
1168 io_u_qpush(&td->io_u_freelist, io_u);
1171 * io_u never leaves this stack, used for iteration of all
1174 io_u_qpush(&td->io_u_all, io_u);
1176 if (td->io_ops->io_u_init) {
1177 int ret = td->io_ops->io_u_init(td, io_u);
1180 log_err("fio: failed to init engine data: %d\n", ret);
1188 if (td->o.verify != VERIFY_NONE) {
1189 td->last_write_comp = scalloc(max_units, sizeof(uint64_t));
1190 if (!td->last_write_comp) {
1191 log_err("fio: failed to alloc write comp data\n");
1199 static int switch_ioscheduler(struct thread_data *td)
1201 char tmp[256], tmp2[128];
1205 if (td->io_ops->flags & FIO_DISKLESSIO)
1208 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
1210 f = fopen(tmp, "r+");
1212 if (errno == ENOENT) {
1213 log_err("fio: os or kernel doesn't support IO scheduler"
1217 td_verror(td, errno, "fopen iosched");
1224 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1225 if (ferror(f) || ret != 1) {
1226 td_verror(td, errno, "fwrite");
1234 * Read back and check that the selected scheduler is now the default.
1236 memset(tmp, 0, sizeof(tmp));
1237 ret = fread(tmp, sizeof(tmp), 1, f);
1238 if (ferror(f) || ret < 0) {
1239 td_verror(td, errno, "fread");
1244 * either a list of io schedulers or "none\n" is expected.
1246 tmp[strlen(tmp) - 1] = '\0';
1249 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1250 if (!strstr(tmp, tmp2)) {
1251 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1252 td_verror(td, EINVAL, "iosched_switch");
1261 static bool keep_running(struct thread_data *td)
1263 unsigned long long limit;
1267 if (td->o.time_based)
1273 if (exceeds_number_ios(td))
1277 limit = td->o.io_limit;
1281 if (limit != -1ULL && ddir_rw_sum(td->io_bytes) < limit) {
1285 * If the difference is less than the minimum IO size, we
1288 diff = limit - ddir_rw_sum(td->io_bytes);
1289 if (diff < td_max_bs(td))
1292 if (fio_files_done(td))
1301 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1303 size_t newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1307 str = malloc(newlen);
1308 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1310 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1313 log_err("fio: exec of cmd <%s> failed\n", str);
1320 * Dry run to compute correct state of numberio for verification.
1322 static uint64_t do_dry_run(struct thread_data *td)
1324 td_set_runstate(td, TD_RUNNING);
1326 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1327 (!flist_empty(&td->trim_list)) || !io_complete_bytes_exceeded(td)) {
1331 if (td->terminate || td->done)
1334 io_u = get_io_u(td);
1338 io_u_set(io_u, IO_U_F_FLIGHT);
1341 if (ddir_rw(acct_ddir(io_u)))
1342 td->io_issues[acct_ddir(io_u)]++;
1343 if (ddir_rw(io_u->ddir)) {
1344 io_u_mark_depth(td, 1);
1345 td->ts.total_io_u[io_u->ddir]++;
1348 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1350 td->o.verify != VERIFY_NONE &&
1351 !td->o.experimental_verify)
1352 log_io_piece(td, io_u);
1354 ret = io_u_sync_complete(td, io_u);
1358 return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
1362 * Entry point for the thread based jobs. The process based jobs end up
1363 * here as well, after a little setup.
1365 static void *thread_main(void *data)
1367 unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
1368 struct thread_data *td = data;
1369 struct thread_options *o = &td->o;
1370 pthread_condattr_t attr;
1374 if (!o->use_thread) {
1380 fio_local_clock_init(o->use_thread);
1382 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1385 fio_server_send_start(td);
1387 INIT_FLIST_HEAD(&td->io_log_list);
1388 INIT_FLIST_HEAD(&td->io_hist_list);
1389 INIT_FLIST_HEAD(&td->verify_list);
1390 INIT_FLIST_HEAD(&td->trim_list);
1391 INIT_FLIST_HEAD(&td->next_rand_list);
1392 pthread_mutex_init(&td->io_u_lock, NULL);
1393 td->io_hist_tree = RB_ROOT;
1395 pthread_condattr_init(&attr);
1396 pthread_cond_init(&td->verify_cond, &attr);
1397 pthread_cond_init(&td->free_cond, &attr);
1399 td_set_runstate(td, TD_INITIALIZED);
1400 dprint(FD_MUTEX, "up startup_mutex\n");
1401 fio_mutex_up(startup_mutex);
1402 dprint(FD_MUTEX, "wait on td->mutex\n");
1403 fio_mutex_down(td->mutex);
1404 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1407 * A new gid requires privilege, so we need to do this before setting
1410 if (o->gid != -1U && setgid(o->gid)) {
1411 td_verror(td, errno, "setgid");
1414 if (o->uid != -1U && setuid(o->uid)) {
1415 td_verror(td, errno, "setuid");
1420 * If we have a gettimeofday() thread, make sure we exclude that
1421 * thread from this job
1424 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1427 * Set affinity first, in case it has an impact on the memory
1430 if (fio_option_is_set(o, cpumask)) {
1431 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1432 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1434 log_err("fio: no CPUs set\n");
1435 log_err("fio: Try increasing number of available CPUs\n");
1436 td_verror(td, EINVAL, "cpus_split");
1440 ret = fio_setaffinity(td->pid, o->cpumask);
1442 td_verror(td, errno, "cpu_set_affinity");
1447 #ifdef CONFIG_LIBNUMA
1448 /* numa node setup */
1449 if (fio_option_is_set(o, numa_cpunodes) ||
1450 fio_option_is_set(o, numa_memnodes)) {
1451 struct bitmask *mask;
1453 if (numa_available() < 0) {
1454 td_verror(td, errno, "Does not support NUMA API\n");
1458 if (fio_option_is_set(o, numa_cpunodes)) {
1459 mask = numa_parse_nodestring(o->numa_cpunodes);
1460 ret = numa_run_on_node_mask(mask);
1461 numa_free_nodemask(mask);
1463 td_verror(td, errno, \
1464 "numa_run_on_node_mask failed\n");
1469 if (fio_option_is_set(o, numa_memnodes)) {
1471 if (o->numa_memnodes)
1472 mask = numa_parse_nodestring(o->numa_memnodes);
1474 switch (o->numa_mem_mode) {
1475 case MPOL_INTERLEAVE:
1476 numa_set_interleave_mask(mask);
1479 numa_set_membind(mask);
1482 numa_set_localalloc();
1484 case MPOL_PREFERRED:
1485 numa_set_preferred(o->numa_mem_prefer_node);
1493 numa_free_nodemask(mask);
1499 if (fio_pin_memory(td))
1503 * May alter parameters that init_io_u() will use, so we need to
1512 if (o->verify_async && verify_async_init(td))
1515 if (fio_option_is_set(o, ioprio) ||
1516 fio_option_is_set(o, ioprio_class)) {
1517 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1519 td_verror(td, errno, "ioprio_set");
1524 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1528 if (nice(o->nice) == -1 && errno != 0) {
1529 td_verror(td, errno, "nice");
1533 if (o->ioscheduler && switch_ioscheduler(td))
1536 if (!o->create_serialize && setup_files(td))
1542 if (init_random_map(td))
1545 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1549 if (pre_read_files(td) < 0)
1553 if (iolog_compress_init(td))
1556 fio_verify_init(td);
1558 if (rate_submit_init(td))
1561 fio_gettime(&td->epoch, NULL);
1562 fio_getrusage(&td->ru_start);
1563 memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
1564 memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
1566 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1567 o->ratemin[DDIR_TRIM]) {
1568 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1569 sizeof(td->bw_sample_time));
1570 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1571 sizeof(td->bw_sample_time));
1572 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1573 sizeof(td->bw_sample_time));
1577 while (keep_running(td)) {
1578 uint64_t verify_bytes;
1580 fio_gettime(&td->start, NULL);
1581 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1584 clear_io_state(td, 0);
1586 prune_io_piece_log(td);
1588 if (td->o.verify_only && (td_write(td) || td_rw(td)))
1589 verify_bytes = do_dry_run(td);
1591 verify_bytes = do_io(td);
1593 fio_mark_td_terminate(td);
1599 * Make sure we've successfully updated the rusage stats
1600 * before waiting on the stat mutex. Otherwise we could have
1601 * the stat thread holding stat mutex and waiting for
1602 * the rusage_sem, which would never get upped because
1603 * this thread is waiting for the stat mutex.
1605 check_update_rusage(td);
1607 fio_mutex_down(stat_mutex);
1608 if (td_read(td) && td->io_bytes[DDIR_READ])
1609 update_runtime(td, elapsed_us, DDIR_READ);
1610 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1611 update_runtime(td, elapsed_us, DDIR_WRITE);
1612 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1613 update_runtime(td, elapsed_us, DDIR_TRIM);
1614 fio_gettime(&td->start, NULL);
1615 fio_mutex_up(stat_mutex);
1617 if (td->error || td->terminate)
1620 if (!o->do_verify ||
1621 o->verify == VERIFY_NONE ||
1622 (td->io_ops->flags & FIO_UNIDIR))
1625 clear_io_state(td, 0);
1627 fio_gettime(&td->start, NULL);
1629 do_verify(td, verify_bytes);
1632 * See comment further up for why this is done here.
1634 check_update_rusage(td);
1636 fio_mutex_down(stat_mutex);
1637 update_runtime(td, elapsed_us, DDIR_READ);
1638 fio_gettime(&td->start, NULL);
1639 fio_mutex_up(stat_mutex);
1641 if (td->error || td->terminate)
1645 update_rusage_stat(td);
1646 td->ts.total_run_time = mtime_since_now(&td->epoch);
1647 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1648 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1649 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1651 if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
1652 (td->o.verify != VERIFY_NONE && td_write(td)))
1653 verify_save_state(td->thread_number);
1655 fio_unpin_memory(td);
1657 fio_writeout_logs(td);
1659 iolog_compress_exit(td);
1660 rate_submit_exit(td);
1662 if (o->exec_postrun)
1663 exec_string(o, o->exec_postrun, (const char *)"postrun");
1665 if (exitall_on_terminate || (o->exitall_error && td->error))
1666 fio_terminate_threads(td->groupid);
1670 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1673 if (o->verify_async)
1674 verify_async_exit(td);
1676 close_and_free_files(td);
1679 cgroup_shutdown(td, &cgroup_mnt);
1680 verify_free_state(td);
1682 if (fio_option_is_set(o, cpumask)) {
1683 ret = fio_cpuset_exit(&o->cpumask);
1685 td_verror(td, ret, "fio_cpuset_exit");
1689 * do this very late, it will log file closing as well
1691 if (o->write_iolog_file)
1692 write_iolog_close(td);
1694 fio_mutex_remove(td->mutex);
1697 td_set_runstate(td, TD_EXITED);
1700 * Do this last after setting our runstate to exited, so we
1701 * know that the stat thread is signaled.
1703 check_update_rusage(td);
1705 return (void *) (uintptr_t) td->error;
1710 * We cannot pass the td data into a forked process, so attach the td and
1711 * pass it to the thread worker.
1713 static int fork_main(int shmid, int offset)
1715 struct thread_data *td;
1718 #if !defined(__hpux) && !defined(CONFIG_NO_SHM)
1719 data = shmat(shmid, NULL, 0);
1720 if (data == (void *) -1) {
1728 * HP-UX inherits shm mappings?
1733 td = data + offset * sizeof(struct thread_data);
1734 ret = thread_main(td);
1736 return (int) (uintptr_t) ret;
1739 static void dump_td_info(struct thread_data *td)
1741 log_err("fio: job '%s' hasn't exited in %lu seconds, it appears to "
1742 "be stuck. Doing forceful exit of this job.\n", td->o.name,
1743 (unsigned long) time_since_now(&td->terminate_time));
1747 * Run over the job map and reap the threads that have exited, if any.
1749 static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1750 unsigned int *m_rate)
1752 struct thread_data *td;
1753 unsigned int cputhreads, realthreads, pending;
1757 * reap exited threads (TD_EXITED -> TD_REAPED)
1759 realthreads = pending = cputhreads = 0;
1760 for_each_td(td, i) {
1764 * ->io_ops is NULL for a thread that has closed its
1767 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1776 if (td->runstate == TD_REAPED)
1778 if (td->o.use_thread) {
1779 if (td->runstate == TD_EXITED) {
1780 td_set_runstate(td, TD_REAPED);
1787 if (td->runstate == TD_EXITED)
1791 * check if someone quit or got killed in an unusual way
1793 ret = waitpid(td->pid, &status, flags);
1795 if (errno == ECHILD) {
1796 log_err("fio: pid=%d disappeared %d\n",
1797 (int) td->pid, td->runstate);
1799 td_set_runstate(td, TD_REAPED);
1803 } else if (ret == td->pid) {
1804 if (WIFSIGNALED(status)) {
1805 int sig = WTERMSIG(status);
1807 if (sig != SIGTERM && sig != SIGUSR2)
1808 log_err("fio: pid=%d, got signal=%d\n",
1809 (int) td->pid, sig);
1811 td_set_runstate(td, TD_REAPED);
1814 if (WIFEXITED(status)) {
1815 if (WEXITSTATUS(status) && !td->error)
1816 td->error = WEXITSTATUS(status);
1818 td_set_runstate(td, TD_REAPED);
1824 * If the job is stuck, do a forceful timeout of it and
1827 if (td->terminate &&
1828 time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) {
1830 td_set_runstate(td, TD_REAPED);
1835 * thread is not dead, continue
1841 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1842 (*t_rate) -= ddir_rw_sum(td->o.rate);
1849 done_secs += mtime_since_now(&td->epoch) / 1000;
1850 profile_td_exit(td);
1853 if (*nr_running == cputhreads && !pending && realthreads)
1854 fio_terminate_threads(TERMINATE_ALL);
1857 static bool __check_trigger_file(void)
1864 if (stat(trigger_file, &sb))
1867 if (unlink(trigger_file) < 0)
1868 log_err("fio: failed to unlink %s: %s\n", trigger_file,
1874 static bool trigger_timedout(void)
1876 if (trigger_timeout)
1877 return time_since_genesis() >= trigger_timeout;
1882 void exec_trigger(const char *cmd)
1891 log_err("fio: failed executing %s trigger\n", cmd);
1894 void check_trigger_file(void)
1896 if (__check_trigger_file() || trigger_timedout()) {
1898 fio_clients_send_trigger(trigger_remote_cmd);
1900 verify_save_state(IO_LIST_ALL);
1901 fio_terminate_threads(TERMINATE_ALL);
1902 exec_trigger(trigger_cmd);
1907 static int fio_verify_load_state(struct thread_data *td)
1911 if (!td->o.verify_state)
1918 ret = fio_server_get_verify_state(td->o.name,
1919 td->thread_number - 1, &data, &ver);
1921 verify_convert_assign_state(td, data, ver);
1923 ret = verify_load_state(td, "local");
1928 static void do_usleep(unsigned int usecs)
1930 check_for_running_stats();
1931 check_trigger_file();
1935 static bool check_mount_writes(struct thread_data *td)
1940 if (!td_write(td) || td->o.allow_mounted_write)
1943 for_each_file(td, f, i) {
1944 if (f->filetype != FIO_TYPE_BD)
1946 if (device_is_mounted(f->file_name))
1952 log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.", f->file_name);
1957 * Main function for kicking off and reaping jobs, as needed.
1959 static void run_threads(void)
1961 struct thread_data *td;
1962 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
1965 if (fio_gtod_offload && fio_start_gtod_thread())
1968 fio_idle_prof_init();
1972 nr_thread = nr_process = 0;
1973 for_each_td(td, i) {
1974 if (check_mount_writes(td))
1976 if (td->o.use_thread)
1982 if (output_format & FIO_OUTPUT_NORMAL) {
1983 log_info("Starting ");
1985 log_info("%d thread%s", nr_thread,
1986 nr_thread > 1 ? "s" : "");
1990 log_info("%d process%s", nr_process,
1991 nr_process > 1 ? "es" : "");
1997 todo = thread_number;
2000 m_rate = t_rate = 0;
2002 for_each_td(td, i) {
2003 print_status_init(td->thread_number - 1);
2005 if (!td->o.create_serialize)
2008 if (fio_verify_load_state(td))
2012 * do file setup here so it happens sequentially,
2013 * we don't want X number of threads getting their
2014 * client data interspersed on disk
2016 if (setup_files(td)) {
2020 log_err("fio: pid=%d, err=%d/%s\n",
2021 (int) td->pid, td->error, td->verror);
2022 td_set_runstate(td, TD_REAPED);
2029 * for sharing to work, each job must always open
2030 * its own files. so close them, if we opened them
2033 for_each_file(td, f, j) {
2034 if (fio_file_open(f))
2035 td_io_close_file(td, f);
2040 /* start idle threads before io threads start to run */
2041 fio_idle_prof_start();
2046 struct thread_data *map[REAL_MAX_JOBS];
2047 struct timeval this_start;
2048 int this_jobs = 0, left;
2051 * create threads (TD_NOT_CREATED -> TD_CREATED)
2053 for_each_td(td, i) {
2054 if (td->runstate != TD_NOT_CREATED)
2058 * never got a chance to start, killed by other
2059 * thread for some reason
2061 if (td->terminate) {
2066 if (td->o.start_delay) {
2067 spent = utime_since_genesis();
2069 if (td->o.start_delay > spent)
2073 if (td->o.stonewall && (nr_started || nr_running)) {
2074 dprint(FD_PROCESS, "%s: stonewall wait\n",
2081 td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
2082 td->update_rusage = 0;
2085 * Set state to created. Thread will transition
2086 * to TD_INITIALIZED when it's done setting up.
2088 td_set_runstate(td, TD_CREATED);
2089 map[this_jobs++] = td;
2092 if (td->o.use_thread) {
2095 dprint(FD_PROCESS, "will pthread_create\n");
2096 ret = pthread_create(&td->thread, NULL,
2099 log_err("pthread_create: %s\n",
2104 ret = pthread_detach(td->thread);
2106 log_err("pthread_detach: %s",
2110 dprint(FD_PROCESS, "will fork\n");
2113 int ret = fork_main(shm_id, i);
2116 } else if (i == fio_debug_jobno)
2117 *fio_debug_jobp = pid;
2119 dprint(FD_MUTEX, "wait on startup_mutex\n");
2120 if (fio_mutex_down_timeout(startup_mutex, 10000)) {
2121 log_err("fio: job startup hung? exiting.\n");
2122 fio_terminate_threads(TERMINATE_ALL);
2127 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2131 * Wait for the started threads to transition to
2134 fio_gettime(&this_start, NULL);
2136 while (left && !fio_abort) {
2137 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
2142 for (i = 0; i < this_jobs; i++) {
2146 if (td->runstate == TD_INITIALIZED) {
2149 } else if (td->runstate >= TD_EXITED) {
2153 nr_running++; /* work-around... */
2159 log_err("fio: %d job%s failed to start\n", left,
2160 left > 1 ? "s" : "");
2161 for (i = 0; i < this_jobs; i++) {
2165 kill(td->pid, SIGTERM);
2171 * start created threads (TD_INITIALIZED -> TD_RUNNING).
2173 for_each_td(td, i) {
2174 if (td->runstate != TD_INITIALIZED)
2177 if (in_ramp_time(td))
2178 td_set_runstate(td, TD_RAMP);
2180 td_set_runstate(td, TD_RUNNING);
2183 m_rate += ddir_rw_sum(td->o.ratemin);
2184 t_rate += ddir_rw_sum(td->o.rate);
2186 fio_mutex_up(td->mutex);
2189 reap_threads(&nr_running, &t_rate, &m_rate);
2195 while (nr_running) {
2196 reap_threads(&nr_running, &t_rate, &m_rate);
2200 fio_idle_prof_stop();
2205 static void wait_for_helper_thread_exit(void)
2210 pthread_cond_signal(&helper_cond);
2211 pthread_join(helper_thread, &ret);
2214 static void free_disk_util(void)
2216 disk_util_prune_entries();
2218 pthread_cond_destroy(&helper_cond);
2221 static void *helper_thread_main(void *data)
2223 struct backend_data *d = data;
2227 pthread_setspecific(d->key, d->ptr);
2229 fio_mutex_up(startup_mutex);
2232 uint64_t sec = DISK_UTIL_MSEC / 1000;
2233 uint64_t nsec = (DISK_UTIL_MSEC % 1000) * 1000000;
2237 gettimeofday(&tv, NULL);
2238 ts.tv_sec = tv.tv_sec + sec;
2239 ts.tv_nsec = (tv.tv_usec * 1000) + nsec;
2241 if (ts.tv_nsec >= 1000000000ULL) {
2242 ts.tv_nsec -= 1000000000ULL;
2246 pthread_cond_timedwait(&helper_cond, &helper_lock, &ts);
2248 ret = update_io_ticks();
2250 if (helper_do_stat) {
2252 __show_running_run_stats();
2256 print_thread_status();
2262 static int create_helper_thread(struct backend_data *data)
2268 pthread_cond_init(&helper_cond, NULL);
2269 pthread_mutex_init(&helper_lock, NULL);
2271 ret = pthread_create(&helper_thread, NULL, helper_thread_main, data);
2273 log_err("Can't create helper thread: %s\n", strerror(ret));
2277 dprint(FD_MUTEX, "wait on startup_mutex\n");
2278 fio_mutex_down(startup_mutex);
2279 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
2283 int fio_backend(struct backend_data *data)
2285 struct thread_data *td;
2289 if (load_profile(exec_profile))
2292 exec_profile = NULL;
2298 struct log_params p = {
2299 .log_type = IO_LOG_TYPE_BW,
2302 setup_log(&agg_io_log[DDIR_READ], &p, "agg-read_bw.log");
2303 setup_log(&agg_io_log[DDIR_WRITE], &p, "agg-write_bw.log");
2304 setup_log(&agg_io_log[DDIR_TRIM], &p, "agg-trim_bw.log");
2307 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
2308 if (startup_mutex == NULL)
2313 create_helper_thread(data);
2315 cgroup_list = smalloc(sizeof(*cgroup_list));
2316 INIT_FLIST_HEAD(cgroup_list);
2320 wait_for_helper_thread_exit();
2325 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2326 struct io_log *log = agg_io_log[i];
2334 for_each_td(td, i) {
2335 fio_options_free(td);
2336 if (td->rusage_sem) {
2337 fio_mutex_remove(td->rusage_sem);
2338 td->rusage_sem = NULL;
2343 cgroup_kill(cgroup_list);
2347 fio_mutex_remove(startup_mutex);