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
37 #ifndef FIO_NO_HAVE_SHM_H
54 static pthread_t disk_util_thread;
55 static struct fio_mutex *disk_thread_mutex;
56 static struct fio_mutex *startup_mutex;
57 static struct fio_mutex *writeout_mutex;
58 static struct flist_head *cgroup_list;
59 static char *cgroup_mnt;
60 static int exit_value;
61 static volatile int fio_abort;
63 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
66 unsigned int thread_number = 0;
67 unsigned int stat_number = 0;
68 unsigned int nr_process = 0;
69 unsigned int nr_thread = 0;
72 unsigned long done_secs = 0;
73 volatile int disk_util_exit = 0;
75 #define PAGE_ALIGN(buf) \
76 (char *) (((uintptr_t) (buf) + page_mask) & ~page_mask)
78 #define JOB_START_TIMEOUT (5 * 1000)
80 static void sig_int(int sig)
84 fio_server_got_signal(sig);
86 log_info("\nfio: terminating on signal %d\n", sig);
91 fio_terminate_threads(TERMINATE_ALL);
95 static void sig_show_status(int sig)
97 show_running_run_stats();
100 static void set_sig_handlers(void)
102 struct sigaction act;
104 memset(&act, 0, sizeof(act));
105 act.sa_handler = sig_int;
106 act.sa_flags = SA_RESTART;
107 sigaction(SIGINT, &act, NULL);
109 memset(&act, 0, sizeof(act));
110 act.sa_handler = sig_int;
111 act.sa_flags = SA_RESTART;
112 sigaction(SIGTERM, &act, NULL);
114 /* Windows uses SIGBREAK as a quit signal from other applications */
116 memset(&act, 0, sizeof(act));
117 act.sa_handler = sig_int;
118 act.sa_flags = SA_RESTART;
119 sigaction(SIGBREAK, &act, NULL);
122 memset(&act, 0, sizeof(act));
123 act.sa_handler = sig_show_status;
124 act.sa_flags = SA_RESTART;
125 sigaction(SIGUSR1, &act, NULL);
128 memset(&act, 0, sizeof(act));
129 act.sa_handler = sig_int;
130 act.sa_flags = SA_RESTART;
131 sigaction(SIGPIPE, &act, NULL);
136 * Check if we are above the minimum rate given.
138 static int __check_min_rate(struct thread_data *td, struct timeval *now,
141 unsigned long long bytes = 0;
142 unsigned long iops = 0;
145 unsigned int ratemin = 0;
146 unsigned int rate_iops = 0;
147 unsigned int rate_iops_min = 0;
149 assert(ddir_rw(ddir));
151 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
155 * allow a 2 second settle period in the beginning
157 if (mtime_since(&td->start, now) < 2000)
160 iops += td->this_io_blocks[ddir];
161 bytes += td->this_io_bytes[ddir];
162 ratemin += td->o.ratemin[ddir];
163 rate_iops += td->o.rate_iops[ddir];
164 rate_iops_min += td->o.rate_iops_min[ddir];
167 * if rate blocks is set, sample is running
169 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
170 spent = mtime_since(&td->lastrate[ddir], now);
171 if (spent < td->o.ratecycle)
174 if (td->o.rate[ddir]) {
176 * check bandwidth specified rate
178 if (bytes < td->rate_bytes[ddir]) {
179 log_err("%s: min rate %u not met\n", td->o.name,
183 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
184 if (rate < ratemin ||
185 bytes < td->rate_bytes[ddir]) {
186 log_err("%s: min rate %u not met, got"
187 " %luKB/sec\n", td->o.name,
194 * checks iops specified rate
196 if (iops < rate_iops) {
197 log_err("%s: min iops rate %u not met\n",
198 td->o.name, rate_iops);
201 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
202 if (rate < rate_iops_min ||
203 iops < td->rate_blocks[ddir]) {
204 log_err("%s: min iops rate %u not met,"
205 " got %lu\n", td->o.name,
206 rate_iops_min, rate);
212 td->rate_bytes[ddir] = bytes;
213 td->rate_blocks[ddir] = iops;
214 memcpy(&td->lastrate[ddir], now, sizeof(*now));
218 static int check_min_rate(struct thread_data *td, struct timeval *now,
219 unsigned long *bytes_done)
223 if (bytes_done[DDIR_READ])
224 ret |= __check_min_rate(td, now, DDIR_READ);
225 if (bytes_done[DDIR_WRITE])
226 ret |= __check_min_rate(td, now, DDIR_WRITE);
227 if (bytes_done[DDIR_TRIM])
228 ret |= __check_min_rate(td, now, DDIR_TRIM);
234 * When job exits, we can cancel the in-flight IO if we are using async
235 * io. Attempt to do so.
237 static void cleanup_pending_aio(struct thread_data *td)
239 struct flist_head *entry, *n;
244 * get immediately available events, if any
246 r = io_u_queued_complete(td, 0, NULL);
251 * now cancel remaining active events
253 if (td->io_ops->cancel) {
254 flist_for_each_safe(entry, n, &td->io_u_busylist) {
255 io_u = flist_entry(entry, struct io_u, list);
258 * if the io_u isn't in flight, then that generally
259 * means someone leaked an io_u. complain but fix
260 * it up, so we don't stall here.
262 if ((io_u->flags & IO_U_F_FLIGHT) == 0) {
263 log_err("fio: non-busy IO on busy list\n");
266 r = td->io_ops->cancel(td, io_u);
274 r = io_u_queued_complete(td, td->cur_depth, NULL);
278 * Helper to handle the final sync of a file. Works just like the normal
279 * io path, just does everything sync.
281 static int fio_io_sync(struct thread_data *td, struct fio_file *f)
283 struct io_u *io_u = __get_io_u(td);
289 io_u->ddir = DDIR_SYNC;
292 if (td_io_prep(td, io_u)) {
298 ret = td_io_queue(td, io_u);
300 td_verror(td, io_u->error, "td_io_queue");
303 } else if (ret == FIO_Q_QUEUED) {
304 if (io_u_queued_complete(td, 1, NULL) < 0)
306 } else if (ret == FIO_Q_COMPLETED) {
308 td_verror(td, io_u->error, "td_io_queue");
312 if (io_u_sync_complete(td, io_u, NULL) < 0)
314 } else if (ret == FIO_Q_BUSY) {
315 if (td_io_commit(td))
323 static inline void __update_tv_cache(struct thread_data *td)
325 fio_gettime(&td->tv_cache, NULL);
328 static inline void update_tv_cache(struct thread_data *td)
330 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
331 __update_tv_cache(td);
334 static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
336 if (in_ramp_time(td))
340 if (mtime_since(&td->epoch, t) >= td->o.timeout * 1000)
346 static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
351 if (ret < 0 || td->error) {
353 enum error_type_bit eb;
358 eb = td_error_type(ddir, err);
359 if (!(td->o.continue_on_error & (1 << eb)))
362 if (td_non_fatal_error(td, eb, err)) {
364 * Continue with the I/Os in case of
367 update_error_count(td, err);
371 } else if (td->o.fill_device && err == ENOSPC) {
373 * We expect to hit this error if
374 * fill_device option is set.
381 * Stop the I/O in case of a fatal
384 update_error_count(td, err);
393 * The main verify engine. Runs over the writes we previously submitted,
394 * reads the blocks back in, and checks the crc/md5 of the data.
396 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
404 dprint(FD_VERIFY, "starting loop\n");
407 * sync io first and invalidate cache, to make sure we really
410 for_each_file(td, f, i) {
411 if (!fio_file_open(f))
413 if (fio_io_sync(td, f))
415 if (file_invalidate_cache(td, f))
422 td_set_runstate(td, TD_VERIFYING);
426 while (!td->terminate) {
432 if (runtime_exceeded(td, &td->tv_cache)) {
433 __update_tv_cache(td);
434 if (runtime_exceeded(td, &td->tv_cache)) {
440 if (flow_threshold_exceeded(td))
443 if (!td->o.experimental_verify) {
444 io_u = __get_io_u(td);
448 if (get_next_verify(td, io_u)) {
453 if (td_io_prep(td, io_u)) {
462 if (io_u->buflen + io_bytes > verify_bytes)
466 if (td->o.verify_async)
467 io_u->end_io = verify_io_u_async;
469 io_u->end_io = verify_io_u;
473 ret = td_io_queue(td, io_u);
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;
486 td_verror(td, EIO, "full resid");
491 io_u->xfer_buflen = io_u->resid;
492 io_u->xfer_buf += bytes;
493 io_u->offset += bytes;
496 if (ddir_rw(io_u->ddir))
497 td->ts.short_io_u[io_u->ddir]++;
500 if (io_u->offset == f->real_file_size)
503 requeue_io_u(td, &io_u);
506 ret = io_u_sync_complete(td, io_u, NULL);
510 io_bytes += io_u->xfer_buflen;
515 requeue_io_u(td, &io_u);
516 ret2 = td_io_commit(td);
522 td_verror(td, -ret, "td_io_queue");
526 if (break_on_this_error(td, ddir, &ret))
530 * if we can queue more, do so. but check if there are
531 * completed io_u's first. Note that we can get BUSY even
532 * without IO queued, if the system is resource starved.
534 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
535 if (full || !td->o.iodepth_batch_complete) {
536 min_events = min(td->o.iodepth_batch_complete,
539 * if the queue is full, we MUST reap at least 1 event
541 if (full && !min_events)
545 unsigned long bytes = 0;
548 * Reap required number of io units, if any,
549 * and do the verification on them through
550 * the callback handler
552 if (io_u_queued_complete(td, min_events, &bytes) < 0) {
557 } while (full && (td->cur_depth > td->o.iodepth_low));
564 min_events = td->cur_depth;
567 ret = io_u_queued_complete(td, min_events, NULL);
569 cleanup_pending_aio(td);
571 td_set_runstate(td, TD_RUNNING);
573 dprint(FD_VERIFY, "exiting loop\n");
576 static int io_bytes_exceeded(struct thread_data *td)
578 unsigned long long bytes;
581 bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE];
582 else if (td_write(td))
583 bytes = td->this_io_bytes[DDIR_WRITE];
584 else if (td_read(td))
585 bytes = td->this_io_bytes[DDIR_READ];
587 bytes = td->this_io_bytes[DDIR_TRIM];
589 return bytes >= td->o.size;
593 * Main IO worker function. It retrieves io_u's to process and queues
594 * and reaps them, checking for rate and errors along the way.
596 static void do_io(struct thread_data *td)
601 if (in_ramp_time(td))
602 td_set_runstate(td, TD_RAMP);
604 td_set_runstate(td, TD_RUNNING);
606 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
607 (!flist_empty(&td->trim_list)) || !io_bytes_exceeded(td) ||
609 struct timeval comp_time;
610 unsigned long bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
616 if (td->terminate || td->done)
621 if (runtime_exceeded(td, &td->tv_cache)) {
622 __update_tv_cache(td);
623 if (runtime_exceeded(td, &td->tv_cache)) {
629 if (flow_threshold_exceeded(td))
639 * Add verification end_io handler if:
640 * - Asked to verify (!td_rw(td))
641 * - Or the io_u is from our verify list (mixed write/ver)
643 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
644 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
645 if (td->o.verify_async)
646 io_u->end_io = verify_io_u_async;
648 io_u->end_io = verify_io_u;
649 td_set_runstate(td, TD_VERIFYING);
650 } else if (in_ramp_time(td))
651 td_set_runstate(td, TD_RAMP);
653 td_set_runstate(td, TD_RUNNING);
655 ret = td_io_queue(td, io_u);
657 case FIO_Q_COMPLETED:
660 clear_io_u(td, io_u);
661 } else if (io_u->resid) {
662 int bytes = io_u->xfer_buflen - io_u->resid;
663 struct fio_file *f = io_u->file;
669 td_verror(td, EIO, "full resid");
674 io_u->xfer_buflen = io_u->resid;
675 io_u->xfer_buf += bytes;
676 io_u->offset += bytes;
678 if (ddir_rw(io_u->ddir))
679 td->ts.short_io_u[io_u->ddir]++;
681 if (io_u->offset == f->real_file_size)
684 requeue_io_u(td, &io_u);
687 if (__should_check_rate(td, DDIR_READ) ||
688 __should_check_rate(td, DDIR_WRITE) ||
689 __should_check_rate(td, DDIR_TRIM))
690 fio_gettime(&comp_time, NULL);
692 ret = io_u_sync_complete(td, io_u, bytes_done);
699 * if the engine doesn't have a commit hook,
700 * the io_u is really queued. if it does have such
701 * a hook, it has to call io_u_queued() itself.
703 if (td->io_ops->commit == NULL)
704 io_u_queued(td, io_u);
707 requeue_io_u(td, &io_u);
708 ret2 = td_io_commit(td);
718 if (break_on_this_error(td, ddir, &ret))
722 * See if we need to complete some commands. Note that we
723 * can get BUSY even without IO queued, if the system is
726 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
727 if (full || !td->o.iodepth_batch_complete) {
728 min_evts = min(td->o.iodepth_batch_complete,
731 * if the queue is full, we MUST reap at least 1 event
733 if (full && !min_evts)
736 if (__should_check_rate(td, DDIR_READ) ||
737 __should_check_rate(td, DDIR_WRITE) ||
738 __should_check_rate(td, DDIR_TRIM))
739 fio_gettime(&comp_time, NULL);
742 ret = io_u_queued_complete(td, min_evts, bytes_done);
746 } while (full && (td->cur_depth > td->o.iodepth_low));
751 if (!ddir_rw_sum(bytes_done) && !(td->io_ops->flags & FIO_NOIO))
754 if (!in_ramp_time(td) && should_check_rate(td, bytes_done)) {
755 if (check_min_rate(td, &comp_time, bytes_done)) {
756 if (exitall_on_terminate)
757 fio_terminate_threads(td->groupid);
758 td_verror(td, EIO, "check_min_rate");
763 if (td->o.thinktime) {
764 unsigned long long b;
766 b = ddir_rw_sum(td->io_blocks);
767 if (!(b % td->o.thinktime_blocks)) {
770 if (td->o.thinktime_spin)
771 usec_spin(td->o.thinktime_spin);
773 left = td->o.thinktime - td->o.thinktime_spin;
775 usec_sleep(td, left);
780 if (td->trim_entries)
781 log_err("fio: %d trim entries leaked?\n", td->trim_entries);
783 if (td->o.fill_device && td->error == ENOSPC) {
792 ret = io_u_queued_complete(td, i, NULL);
793 if (td->o.fill_device && td->error == ENOSPC)
797 if (should_fsync(td) && td->o.end_fsync) {
798 td_set_runstate(td, TD_FSYNCING);
800 for_each_file(td, f, i) {
801 if (!fio_file_open(f))
807 cleanup_pending_aio(td);
810 * stop job if we failed doing any IO
812 if (!ddir_rw_sum(td->this_io_bytes))
816 static void cleanup_io_u(struct thread_data *td)
818 struct flist_head *entry, *n;
821 flist_for_each_safe(entry, n, &td->io_u_freelist) {
822 io_u = flist_entry(entry, struct io_u, list);
824 flist_del(&io_u->list);
826 if (td->io_ops->io_u_free)
827 td->io_ops->io_u_free(td, io_u);
829 fio_memfree(io_u, sizeof(*io_u));
835 static int init_io_u(struct thread_data *td)
838 unsigned int max_bs, min_write;
839 int cl_align, i, max_units;
843 max_units = td->o.iodepth;
844 max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
845 max_bs = max(td->o.max_bs[DDIR_TRIM], max_bs);
846 min_write = td->o.min_bs[DDIR_WRITE];
847 td->orig_buffer_size = (unsigned long long) max_bs
848 * (unsigned long long) max_units;
850 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
853 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
856 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
857 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
860 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
861 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
865 if (data_xfer && allocate_io_mem(td))
868 if (td->o.odirect || td->o.mem_align ||
869 (td->io_ops->flags & FIO_RAWIO))
870 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
874 cl_align = os_cache_line_size();
876 for (i = 0; i < max_units; i++) {
882 ptr = fio_memalign(cl_align, sizeof(*io_u));
884 log_err("fio: unable to allocate aligned memory\n");
889 memset(io_u, 0, sizeof(*io_u));
890 INIT_FLIST_HEAD(&io_u->list);
891 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
895 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
898 io_u_fill_buffer(td, io_u, min_write, max_bs);
899 if (td_write(td) && td->o.verify_pattern_bytes) {
901 * Fill the buffer with the pattern if we are
902 * going to be doing writes.
904 fill_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
909 io_u->flags = IO_U_F_FREE;
910 flist_add(&io_u->list, &td->io_u_freelist);
912 if (td->io_ops->io_u_init) {
913 int ret = td->io_ops->io_u_init(td, io_u);
916 log_err("fio: failed to init engine data: %d\n", ret);
927 static int switch_ioscheduler(struct thread_data *td)
929 char tmp[256], tmp2[128];
933 if (td->io_ops->flags & FIO_DISKLESSIO)
936 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
938 f = fopen(tmp, "r+");
940 if (errno == ENOENT) {
941 log_err("fio: os or kernel doesn't support IO scheduler"
945 td_verror(td, errno, "fopen iosched");
952 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
953 if (ferror(f) || ret != 1) {
954 td_verror(td, errno, "fwrite");
962 * Read back and check that the selected scheduler is now the default.
964 ret = fread(tmp, 1, sizeof(tmp), f);
965 if (ferror(f) || ret < 0) {
966 td_verror(td, errno, "fread");
971 sprintf(tmp2, "[%s]", td->o.ioscheduler);
972 if (!strstr(tmp, tmp2)) {
973 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
974 td_verror(td, EINVAL, "iosched_switch");
983 static int keep_running(struct thread_data *td)
987 if (td->o.time_based)
994 if (ddir_rw_sum(td->io_bytes) < td->o.size)
1000 static int exec_string(const char *string)
1002 int ret, newlen = strlen(string) + 1 + 8;
1005 str = malloc(newlen);
1006 sprintf(str, "sh -c %s", string);
1010 log_err("fio: exec of cmd <%s> failed\n", str);
1017 * Entry point for the thread based jobs. The process based jobs end up
1018 * here as well, after a little setup.
1020 static void *thread_main(void *data)
1022 unsigned long long elapsed;
1023 struct thread_data *td = data;
1024 pthread_condattr_t attr;
1027 if (!td->o.use_thread) {
1033 fio_local_clock_init(td->o.use_thread);
1035 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1037 INIT_FLIST_HEAD(&td->io_u_freelist);
1038 INIT_FLIST_HEAD(&td->io_u_busylist);
1039 INIT_FLIST_HEAD(&td->io_u_requeues);
1040 INIT_FLIST_HEAD(&td->io_log_list);
1041 INIT_FLIST_HEAD(&td->io_hist_list);
1042 INIT_FLIST_HEAD(&td->verify_list);
1043 INIT_FLIST_HEAD(&td->trim_list);
1044 INIT_FLIST_HEAD(&td->next_rand_list);
1045 pthread_mutex_init(&td->io_u_lock, NULL);
1046 td->io_hist_tree = RB_ROOT;
1048 pthread_condattr_init(&attr);
1049 pthread_cond_init(&td->verify_cond, &attr);
1050 pthread_cond_init(&td->free_cond, &attr);
1052 td_set_runstate(td, TD_INITIALIZED);
1053 dprint(FD_MUTEX, "up startup_mutex\n");
1054 fio_mutex_up(startup_mutex);
1055 dprint(FD_MUTEX, "wait on td->mutex\n");
1056 fio_mutex_down(td->mutex);
1057 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1060 * the ->mutex mutex is now no longer used, close it to avoid
1061 * eating a file descriptor
1063 fio_mutex_remove(td->mutex);
1066 * A new gid requires privilege, so we need to do this before setting
1069 if (td->o.gid != -1U && setgid(td->o.gid)) {
1070 td_verror(td, errno, "setgid");
1073 if (td->o.uid != -1U && setuid(td->o.uid)) {
1074 td_verror(td, errno, "setuid");
1079 * If we have a gettimeofday() thread, make sure we exclude that
1080 * thread from this job
1083 fio_cpu_clear(&td->o.cpumask, td->o.gtod_cpu);
1086 * Set affinity first, in case it has an impact on the memory
1089 if (td->o.cpumask_set && fio_setaffinity(td->pid, td->o.cpumask) == -1) {
1090 td_verror(td, errno, "cpu_set_affinity");
1094 #ifdef CONFIG_LIBNUMA
1095 /* numa node setup */
1096 if (td->o.numa_cpumask_set || td->o.numa_memmask_set) {
1099 if (numa_available() < 0) {
1100 td_verror(td, errno, "Does not support NUMA API\n");
1104 if (td->o.numa_cpumask_set) {
1105 ret = numa_run_on_node_mask(td->o.numa_cpunodesmask);
1107 td_verror(td, errno, \
1108 "numa_run_on_node_mask failed\n");
1113 if (td->o.numa_memmask_set) {
1115 switch (td->o.numa_mem_mode) {
1116 case MPOL_INTERLEAVE:
1117 numa_set_interleave_mask(td->o.numa_memnodesmask);
1120 numa_set_membind(td->o.numa_memnodesmask);
1123 numa_set_localalloc();
1125 case MPOL_PREFERRED:
1126 numa_set_preferred(td->o.numa_mem_prefer_node);
1138 * May alter parameters that init_io_u() will use, so we need to
1147 if (td->o.verify_async && verify_async_init(td))
1150 if (td->ioprio_set) {
1151 if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) {
1152 td_verror(td, errno, "ioprio_set");
1157 if (td->o.cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1161 if (nice(td->o.nice) == -1 && errno != 0) {
1162 td_verror(td, errno, "nice");
1166 if (td->o.ioscheduler && switch_ioscheduler(td))
1169 if (!td->o.create_serialize && setup_files(td))
1175 if (init_random_map(td))
1178 if (td->o.exec_prerun) {
1179 if (exec_string(td->o.exec_prerun))
1183 if (td->o.pre_read) {
1184 if (pre_read_files(td) < 0)
1188 fio_gettime(&td->epoch, NULL);
1189 getrusage(RUSAGE_SELF, &td->ru_start);
1192 while (keep_running(td)) {
1193 uint64_t write_bytes;
1195 fio_gettime(&td->start, NULL);
1196 memcpy(&td->bw_sample_time, &td->start, sizeof(td->start));
1197 memcpy(&td->iops_sample_time, &td->start, sizeof(td->start));
1198 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1200 if (td->o.ratemin[DDIR_READ] || td->o.ratemin[DDIR_WRITE] ||
1201 td->o.ratemin[DDIR_TRIM]) {
1202 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1203 sizeof(td->bw_sample_time));
1204 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1205 sizeof(td->bw_sample_time));
1206 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1207 sizeof(td->bw_sample_time));
1213 prune_io_piece_log(td);
1215 write_bytes = td->io_bytes[DDIR_WRITE];
1217 write_bytes = td->io_bytes[DDIR_WRITE] - write_bytes;
1221 if (td_read(td) && td->io_bytes[DDIR_READ]) {
1222 elapsed = utime_since_now(&td->start);
1223 td->ts.runtime[DDIR_READ] += elapsed;
1225 if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
1226 elapsed = utime_since_now(&td->start);
1227 td->ts.runtime[DDIR_WRITE] += elapsed;
1229 if (td_trim(td) && td->io_bytes[DDIR_TRIM]) {
1230 elapsed = utime_since_now(&td->start);
1231 td->ts.runtime[DDIR_TRIM] += elapsed;
1234 if (td->error || td->terminate)
1237 if (!td->o.do_verify ||
1238 td->o.verify == VERIFY_NONE ||
1239 (td->io_ops->flags & FIO_UNIDIR))
1244 fio_gettime(&td->start, NULL);
1246 do_verify(td, write_bytes);
1248 td->ts.runtime[DDIR_READ] += utime_since_now(&td->start);
1250 if (td->error || td->terminate)
1254 update_rusage_stat(td);
1255 td->ts.runtime[DDIR_READ] = (td->ts.runtime[DDIR_READ] + 999) / 1000;
1256 td->ts.runtime[DDIR_WRITE] = (td->ts.runtime[DDIR_WRITE] + 999) / 1000;
1257 td->ts.runtime[DDIR_TRIM] = (td->ts.runtime[DDIR_TRIM] + 999) / 1000;
1258 td->ts.total_run_time = mtime_since_now(&td->epoch);
1259 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1260 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1261 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1263 fio_mutex_down(writeout_mutex);
1265 if (td->o.bw_log_file) {
1266 finish_log_named(td, td->bw_log,
1267 td->o.bw_log_file, "bw");
1269 finish_log(td, td->bw_log, "bw");
1272 if (td->o.lat_log_file) {
1273 finish_log_named(td, td->lat_log,
1274 td->o.lat_log_file, "lat");
1276 finish_log(td, td->lat_log, "lat");
1279 if (td->o.lat_log_file) {
1280 finish_log_named(td, td->slat_log,
1281 td->o.lat_log_file, "slat");
1283 finish_log(td, td->slat_log, "slat");
1286 if (td->o.lat_log_file) {
1287 finish_log_named(td, td->clat_log,
1288 td->o.lat_log_file, "clat");
1290 finish_log(td, td->clat_log, "clat");
1293 if (td->o.iops_log_file) {
1294 finish_log_named(td, td->iops_log,
1295 td->o.iops_log_file, "iops");
1297 finish_log(td, td->iops_log, "iops");
1300 fio_mutex_up(writeout_mutex);
1301 if (td->o.exec_postrun)
1302 exec_string(td->o.exec_postrun);
1304 if (exitall_on_terminate)
1305 fio_terminate_threads(td->groupid);
1309 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1312 if (td->o.verify_async)
1313 verify_async_exit(td);
1315 close_and_free_files(td);
1318 cgroup_shutdown(td, &cgroup_mnt);
1320 if (td->o.cpumask_set) {
1321 int ret = fio_cpuset_exit(&td->o.cpumask);
1323 td_verror(td, ret, "fio_cpuset_exit");
1327 * do this very late, it will log file closing as well
1329 if (td->o.write_iolog_file)
1330 write_iolog_close(td);
1332 td_set_runstate(td, TD_EXITED);
1333 return (void *) (uintptr_t) td->error;
1338 * We cannot pass the td data into a forked process, so attach the td and
1339 * pass it to the thread worker.
1341 static int fork_main(int shmid, int offset)
1343 struct thread_data *td;
1347 data = shmat(shmid, NULL, 0);
1348 if (data == (void *) -1) {
1356 * HP-UX inherits shm mappings?
1361 td = data + offset * sizeof(struct thread_data);
1362 ret = thread_main(td);
1364 return (int) (uintptr_t) ret;
1368 * Run over the job map and reap the threads that have exited, if any.
1370 static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1371 unsigned int *m_rate)
1373 struct thread_data *td;
1374 unsigned int cputhreads, realthreads, pending;
1378 * reap exited threads (TD_EXITED -> TD_REAPED)
1380 realthreads = pending = cputhreads = 0;
1381 for_each_td(td, i) {
1385 * ->io_ops is NULL for a thread that has closed its
1388 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1397 if (td->runstate == TD_REAPED)
1399 if (td->o.use_thread) {
1400 if (td->runstate == TD_EXITED) {
1401 td_set_runstate(td, TD_REAPED);
1408 if (td->runstate == TD_EXITED)
1412 * check if someone quit or got killed in an unusual way
1414 ret = waitpid(td->pid, &status, flags);
1416 if (errno == ECHILD) {
1417 log_err("fio: pid=%d disappeared %d\n",
1418 (int) td->pid, td->runstate);
1420 td_set_runstate(td, TD_REAPED);
1424 } else if (ret == td->pid) {
1425 if (WIFSIGNALED(status)) {
1426 int sig = WTERMSIG(status);
1428 if (sig != SIGTERM && sig != SIGUSR2)
1429 log_err("fio: pid=%d, got signal=%d\n",
1430 (int) td->pid, sig);
1432 td_set_runstate(td, TD_REAPED);
1435 if (WIFEXITED(status)) {
1436 if (WEXITSTATUS(status) && !td->error)
1437 td->error = WEXITSTATUS(status);
1439 td_set_runstate(td, TD_REAPED);
1445 * thread is not dead, continue
1451 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1452 (*t_rate) -= ddir_rw_sum(td->o.rate);
1459 done_secs += mtime_since_now(&td->epoch) / 1000;
1462 if (*nr_running == cputhreads && !pending && realthreads)
1463 fio_terminate_threads(TERMINATE_ALL);
1467 * Main function for kicking off and reaping jobs, as needed.
1469 static void run_threads(void)
1471 struct thread_data *td;
1472 unsigned long spent;
1473 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
1475 if (fio_pin_memory())
1478 if (fio_gtod_offload && fio_start_gtod_thread())
1483 if (output_format == FIO_OUTPUT_NORMAL) {
1484 log_info("Starting ");
1486 log_info("%d thread%s", nr_thread,
1487 nr_thread > 1 ? "s" : "");
1491 log_info("%d process%s", nr_process,
1492 nr_process > 1 ? "es" : "");
1498 todo = thread_number;
1501 m_rate = t_rate = 0;
1503 for_each_td(td, i) {
1504 print_status_init(td->thread_number - 1);
1506 if (!td->o.create_serialize)
1510 * do file setup here so it happens sequentially,
1511 * we don't want X number of threads getting their
1512 * client data interspersed on disk
1514 if (setup_files(td)) {
1517 log_err("fio: pid=%d, err=%d/%s\n",
1518 (int) td->pid, td->error, td->verror);
1519 td_set_runstate(td, TD_REAPED);
1526 * for sharing to work, each job must always open
1527 * its own files. so close them, if we opened them
1530 for_each_file(td, f, j) {
1531 if (fio_file_open(f))
1532 td_io_close_file(td, f);
1540 struct thread_data *map[REAL_MAX_JOBS];
1541 struct timeval this_start;
1542 int this_jobs = 0, left;
1545 * create threads (TD_NOT_CREATED -> TD_CREATED)
1547 for_each_td(td, i) {
1548 if (td->runstate != TD_NOT_CREATED)
1552 * never got a chance to start, killed by other
1553 * thread for some reason
1555 if (td->terminate) {
1560 if (td->o.start_delay) {
1561 spent = mtime_since_genesis();
1563 if (td->o.start_delay * 1000 > spent)
1567 if (td->o.stonewall && (nr_started || nr_running)) {
1568 dprint(FD_PROCESS, "%s: stonewall wait\n",
1576 * Set state to created. Thread will transition
1577 * to TD_INITIALIZED when it's done setting up.
1579 td_set_runstate(td, TD_CREATED);
1580 map[this_jobs++] = td;
1583 if (td->o.use_thread) {
1586 dprint(FD_PROCESS, "will pthread_create\n");
1587 ret = pthread_create(&td->thread, NULL,
1590 log_err("pthread_create: %s\n",
1595 ret = pthread_detach(td->thread);
1597 log_err("pthread_detach: %s",
1601 dprint(FD_PROCESS, "will fork\n");
1604 int ret = fork_main(shm_id, i);
1607 } else if (i == fio_debug_jobno)
1608 *fio_debug_jobp = pid;
1610 dprint(FD_MUTEX, "wait on startup_mutex\n");
1611 if (fio_mutex_down_timeout(startup_mutex, 10)) {
1612 log_err("fio: job startup hung? exiting.\n");
1613 fio_terminate_threads(TERMINATE_ALL);
1618 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1622 * Wait for the started threads to transition to
1625 fio_gettime(&this_start, NULL);
1627 while (left && !fio_abort) {
1628 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
1633 for (i = 0; i < this_jobs; i++) {
1637 if (td->runstate == TD_INITIALIZED) {
1640 } else if (td->runstate >= TD_EXITED) {
1644 nr_running++; /* work-around... */
1650 log_err("fio: %d job%s failed to start\n", left,
1651 left > 1 ? "s" : "");
1652 for (i = 0; i < this_jobs; i++) {
1656 kill(td->pid, SIGTERM);
1662 * start created threads (TD_INITIALIZED -> TD_RUNNING).
1664 for_each_td(td, i) {
1665 if (td->runstate != TD_INITIALIZED)
1668 if (in_ramp_time(td))
1669 td_set_runstate(td, TD_RAMP);
1671 td_set_runstate(td, TD_RUNNING);
1674 m_rate += ddir_rw_sum(td->o.ratemin);
1675 t_rate += ddir_rw_sum(td->o.rate);
1677 fio_mutex_up(td->mutex);
1680 reap_threads(&nr_running, &t_rate, &m_rate);
1684 fio_server_idle_loop();
1690 while (nr_running) {
1691 reap_threads(&nr_running, &t_rate, &m_rate);
1694 fio_server_idle_loop();
1703 void wait_for_disk_thread_exit(void)
1705 fio_mutex_down(disk_thread_mutex);
1708 static void free_disk_util(void)
1710 disk_util_start_exit();
1711 wait_for_disk_thread_exit();
1712 disk_util_prune_entries();
1715 static void *disk_thread_main(void *data)
1719 fio_mutex_up(startup_mutex);
1721 while (threads && !ret) {
1722 usleep(DISK_UTIL_MSEC * 1000);
1725 ret = update_io_ticks();
1728 print_thread_status();
1731 fio_mutex_up(disk_thread_mutex);
1735 static int create_disk_util_thread(void)
1741 disk_thread_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1743 ret = pthread_create(&disk_util_thread, NULL, disk_thread_main, NULL);
1745 fio_mutex_remove(disk_thread_mutex);
1746 log_err("Can't create disk util thread: %s\n", strerror(ret));
1750 ret = pthread_detach(disk_util_thread);
1752 fio_mutex_remove(disk_thread_mutex);
1753 log_err("Can't detatch disk util thread: %s\n", strerror(ret));
1757 dprint(FD_MUTEX, "wait on startup_mutex\n");
1758 fio_mutex_down(startup_mutex);
1759 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1763 int fio_backend(void)
1765 struct thread_data *td;
1769 if (load_profile(exec_profile))
1772 exec_profile = NULL;
1778 setup_log(&agg_io_log[DDIR_READ], 0);
1779 setup_log(&agg_io_log[DDIR_WRITE], 0);
1780 setup_log(&agg_io_log[DDIR_TRIM], 0);
1783 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1784 if (startup_mutex == NULL)
1786 writeout_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1787 if (writeout_mutex == NULL)
1791 create_disk_util_thread();
1793 cgroup_list = smalloc(sizeof(*cgroup_list));
1794 INIT_FLIST_HEAD(cgroup_list);
1801 __finish_log(agg_io_log[DDIR_READ], "agg-read_bw.log");
1802 __finish_log(agg_io_log[DDIR_WRITE],
1803 "agg-write_bw.log");
1804 __finish_log(agg_io_log[DDIR_TRIM],
1805 "agg-write_bw.log");
1810 fio_options_free(td);
1813 cgroup_kill(cgroup_list);
1817 fio_mutex_remove(startup_mutex);
1818 fio_mutex_remove(writeout_mutex);
1819 fio_mutex_remove(disk_thread_mutex);