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"
56 static pthread_t disk_util_thread;
57 static struct fio_mutex *disk_thread_mutex;
58 static struct fio_mutex *startup_mutex;
59 static struct fio_mutex *writeout_mutex;
60 static struct flist_head *cgroup_list;
61 static char *cgroup_mnt;
62 static int exit_value;
63 static volatile int fio_abort;
65 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
68 unsigned int thread_number = 0;
69 unsigned int stat_number = 0;
70 unsigned int nr_process = 0;
71 unsigned int nr_thread = 0;
74 unsigned long done_secs = 0;
75 volatile int disk_util_exit = 0;
77 #define PAGE_ALIGN(buf) \
78 (char *) (((uintptr_t) (buf) + page_mask) & ~page_mask)
80 #define JOB_START_TIMEOUT (5 * 1000)
82 static void sig_int(int sig)
86 fio_server_got_signal(sig);
88 log_info("\nfio: terminating on signal %d\n", sig);
93 fio_terminate_threads(TERMINATE_ALL);
97 static void sig_show_status(int sig)
99 show_running_run_stats();
102 static void set_sig_handlers(void)
104 struct sigaction act;
106 memset(&act, 0, sizeof(act));
107 act.sa_handler = sig_int;
108 act.sa_flags = SA_RESTART;
109 sigaction(SIGINT, &act, NULL);
111 memset(&act, 0, sizeof(act));
112 act.sa_handler = sig_int;
113 act.sa_flags = SA_RESTART;
114 sigaction(SIGTERM, &act, NULL);
116 /* Windows uses SIGBREAK as a quit signal from other applications */
118 memset(&act, 0, sizeof(act));
119 act.sa_handler = sig_int;
120 act.sa_flags = SA_RESTART;
121 sigaction(SIGBREAK, &act, NULL);
124 memset(&act, 0, sizeof(act));
125 act.sa_handler = sig_show_status;
126 act.sa_flags = SA_RESTART;
127 sigaction(SIGUSR1, &act, NULL);
130 memset(&act, 0, sizeof(act));
131 act.sa_handler = sig_int;
132 act.sa_flags = SA_RESTART;
133 sigaction(SIGPIPE, &act, NULL);
138 * Check if we are above the minimum rate given.
140 static int __check_min_rate(struct thread_data *td, struct timeval *now,
143 unsigned long long bytes = 0;
144 unsigned long iops = 0;
147 unsigned int ratemin = 0;
148 unsigned int rate_iops = 0;
149 unsigned int rate_iops_min = 0;
151 assert(ddir_rw(ddir));
153 if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
157 * allow a 2 second settle period in the beginning
159 if (mtime_since(&td->start, now) < 2000)
162 iops += td->this_io_blocks[ddir];
163 bytes += td->this_io_bytes[ddir];
164 ratemin += td->o.ratemin[ddir];
165 rate_iops += td->o.rate_iops[ddir];
166 rate_iops_min += td->o.rate_iops_min[ddir];
169 * if rate blocks is set, sample is running
171 if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
172 spent = mtime_since(&td->lastrate[ddir], now);
173 if (spent < td->o.ratecycle)
176 if (td->o.rate[ddir]) {
178 * check bandwidth specified rate
180 if (bytes < td->rate_bytes[ddir]) {
181 log_err("%s: min rate %u not met\n", td->o.name,
185 rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
186 if (rate < ratemin ||
187 bytes < td->rate_bytes[ddir]) {
188 log_err("%s: min rate %u not met, got"
189 " %luKB/sec\n", td->o.name,
196 * checks iops specified rate
198 if (iops < rate_iops) {
199 log_err("%s: min iops rate %u not met\n",
200 td->o.name, rate_iops);
203 rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
204 if (rate < rate_iops_min ||
205 iops < td->rate_blocks[ddir]) {
206 log_err("%s: min iops rate %u not met,"
207 " got %lu\n", td->o.name,
208 rate_iops_min, rate);
214 td->rate_bytes[ddir] = bytes;
215 td->rate_blocks[ddir] = iops;
216 memcpy(&td->lastrate[ddir], now, sizeof(*now));
220 static int check_min_rate(struct thread_data *td, struct timeval *now,
221 uint64_t *bytes_done)
225 if (bytes_done[DDIR_READ])
226 ret |= __check_min_rate(td, now, DDIR_READ);
227 if (bytes_done[DDIR_WRITE])
228 ret |= __check_min_rate(td, now, DDIR_WRITE);
229 if (bytes_done[DDIR_TRIM])
230 ret |= __check_min_rate(td, now, DDIR_TRIM);
236 * When job exits, we can cancel the in-flight IO if we are using async
237 * io. Attempt to do so.
239 static void cleanup_pending_aio(struct thread_data *td)
241 struct flist_head *entry, *n;
246 * get immediately available events, if any
248 r = io_u_queued_complete(td, 0, NULL);
253 * now cancel remaining active events
255 if (td->io_ops->cancel) {
256 flist_for_each_safe(entry, n, &td->io_u_busylist) {
257 io_u = flist_entry(entry, struct io_u, list);
260 * if the io_u isn't in flight, then that generally
261 * means someone leaked an io_u. complain but fix
262 * it up, so we don't stall here.
264 if ((io_u->flags & IO_U_F_FLIGHT) == 0) {
265 log_err("fio: non-busy IO on busy list\n");
268 r = td->io_ops->cancel(td, io_u);
276 r = io_u_queued_complete(td, td->cur_depth, NULL);
280 * Helper to handle the final sync of a file. Works just like the normal
281 * io path, just does everything sync.
283 static int fio_io_sync(struct thread_data *td, struct fio_file *f)
285 struct io_u *io_u = __get_io_u(td);
291 io_u->ddir = DDIR_SYNC;
294 if (td_io_prep(td, io_u)) {
300 ret = td_io_queue(td, io_u);
302 td_verror(td, io_u->error, "td_io_queue");
305 } else if (ret == FIO_Q_QUEUED) {
306 if (io_u_queued_complete(td, 1, NULL) < 0)
308 } else if (ret == FIO_Q_COMPLETED) {
310 td_verror(td, io_u->error, "td_io_queue");
314 if (io_u_sync_complete(td, io_u, NULL) < 0)
316 } else if (ret == FIO_Q_BUSY) {
317 if (td_io_commit(td))
325 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
329 if (fio_file_open(f))
330 return fio_io_sync(td, f);
332 if (td_io_open_file(td, f))
335 ret = fio_io_sync(td, f);
336 td_io_close_file(td, f);
340 static inline void __update_tv_cache(struct thread_data *td)
342 fio_gettime(&td->tv_cache, NULL);
345 static inline void update_tv_cache(struct thread_data *td)
347 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
348 __update_tv_cache(td);
351 static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
353 if (in_ramp_time(td))
357 if (mtime_since(&td->epoch, t) >= td->o.timeout * 1000)
363 static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
368 if (ret < 0 || td->error) {
370 enum error_type_bit eb;
375 eb = td_error_type(ddir, err);
376 if (!(td->o.continue_on_error & (1 << eb)))
379 if (td_non_fatal_error(td, eb, err)) {
381 * Continue with the I/Os in case of
384 update_error_count(td, err);
388 } else if (td->o.fill_device && err == ENOSPC) {
390 * We expect to hit this error if
391 * fill_device option is set.
398 * Stop the I/O in case of a fatal
401 update_error_count(td, err);
410 * The main verify engine. Runs over the writes we previously submitted,
411 * reads the blocks back in, and checks the crc/md5 of the data.
413 static void do_verify(struct thread_data *td, uint64_t verify_bytes)
415 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
421 dprint(FD_VERIFY, "starting loop\n");
424 * sync io first and invalidate cache, to make sure we really
427 for_each_file(td, f, i) {
428 if (!fio_file_open(f))
430 if (fio_io_sync(td, f))
432 if (file_invalidate_cache(td, f))
439 td_set_runstate(td, TD_VERIFYING);
442 while (!td->terminate) {
448 if (runtime_exceeded(td, &td->tv_cache)) {
449 __update_tv_cache(td);
450 if (runtime_exceeded(td, &td->tv_cache)) {
456 if (flow_threshold_exceeded(td))
459 if (!td->o.experimental_verify) {
460 io_u = __get_io_u(td);
464 if (get_next_verify(td, io_u)) {
469 if (td_io_prep(td, io_u)) {
474 if (ddir_rw_sum(bytes_done) + td->o.rw_min_bs > verify_bytes)
477 while ((io_u = get_io_u(td)) != NULL) {
479 * We are only interested in the places where
480 * we wrote or trimmed IOs. Turn those into
481 * reads for verification purposes.
483 if (io_u->ddir == DDIR_READ) {
485 * Pretend we issued it for rwmix
488 td->io_issues[DDIR_READ]++;
491 } else if (io_u->ddir == DDIR_TRIM) {
492 io_u->ddir = DDIR_READ;
493 io_u->flags |= IO_U_F_TRIMMED;
495 } else if (io_u->ddir == DDIR_WRITE) {
496 io_u->ddir = DDIR_READ;
508 if (td->o.verify_async)
509 io_u->end_io = verify_io_u_async;
511 io_u->end_io = verify_io_u;
515 ret = td_io_queue(td, io_u);
517 case FIO_Q_COMPLETED:
520 clear_io_u(td, io_u);
521 } else if (io_u->resid) {
522 int bytes = io_u->xfer_buflen - io_u->resid;
528 td_verror(td, EIO, "full resid");
533 io_u->xfer_buflen = io_u->resid;
534 io_u->xfer_buf += bytes;
535 io_u->offset += bytes;
537 if (ddir_rw(io_u->ddir))
538 td->ts.short_io_u[io_u->ddir]++;
541 if (io_u->offset == f->real_file_size)
544 requeue_io_u(td, &io_u);
547 ret = io_u_sync_complete(td, io_u, bytes_done);
555 requeue_io_u(td, &io_u);
556 ret2 = td_io_commit(td);
562 td_verror(td, -ret, "td_io_queue");
566 if (break_on_this_error(td, ddir, &ret))
570 * if we can queue more, do so. but check if there are
571 * completed io_u's first. Note that we can get BUSY even
572 * without IO queued, if the system is resource starved.
574 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
575 if (full || !td->o.iodepth_batch_complete) {
576 min_events = min(td->o.iodepth_batch_complete,
579 * if the queue is full, we MUST reap at least 1 event
581 if (full && !min_events)
586 * Reap required number of io units, if any,
587 * and do the verification on them through
588 * the callback handler
590 if (io_u_queued_complete(td, min_events, bytes_done) < 0) {
594 } while (full && (td->cur_depth > td->o.iodepth_low));
601 min_events = td->cur_depth;
604 ret = io_u_queued_complete(td, min_events, NULL);
606 cleanup_pending_aio(td);
608 td_set_runstate(td, TD_RUNNING);
610 dprint(FD_VERIFY, "exiting loop\n");
613 static int io_bytes_exceeded(struct thread_data *td)
615 unsigned long long bytes;
618 bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE];
619 else if (td_write(td))
620 bytes = td->this_io_bytes[DDIR_WRITE];
621 else if (td_read(td))
622 bytes = td->this_io_bytes[DDIR_READ];
624 bytes = td->this_io_bytes[DDIR_TRIM];
626 return bytes >= td->o.size;
630 * Main IO worker function. It retrieves io_u's to process and queues
631 * and reaps them, checking for rate and errors along the way.
633 * Returns number of bytes written and trimmed.
635 static uint64_t do_io(struct thread_data *td)
637 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
641 if (in_ramp_time(td))
642 td_set_runstate(td, TD_RAMP);
644 td_set_runstate(td, TD_RUNNING);
646 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
647 (!flist_empty(&td->trim_list)) || !io_bytes_exceeded(td) ||
649 struct timeval comp_time;
655 if (td->terminate || td->done)
660 if (runtime_exceeded(td, &td->tv_cache)) {
661 __update_tv_cache(td);
662 if (runtime_exceeded(td, &td->tv_cache)) {
668 if (flow_threshold_exceeded(td))
678 * Add verification end_io handler if:
679 * - Asked to verify (!td_rw(td))
680 * - Or the io_u is from our verify list (mixed write/ver)
682 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
683 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
684 if (td->o.verify_async)
685 io_u->end_io = verify_io_u_async;
687 io_u->end_io = verify_io_u;
688 td_set_runstate(td, TD_VERIFYING);
689 } else if (in_ramp_time(td))
690 td_set_runstate(td, TD_RAMP);
692 td_set_runstate(td, TD_RUNNING);
694 ret = td_io_queue(td, io_u);
696 case FIO_Q_COMPLETED:
699 clear_io_u(td, io_u);
700 } else if (io_u->resid) {
701 int bytes = io_u->xfer_buflen - io_u->resid;
702 struct fio_file *f = io_u->file;
708 td_verror(td, EIO, "full resid");
713 io_u->xfer_buflen = io_u->resid;
714 io_u->xfer_buf += bytes;
715 io_u->offset += bytes;
717 if (ddir_rw(io_u->ddir))
718 td->ts.short_io_u[io_u->ddir]++;
720 if (io_u->offset == f->real_file_size)
723 requeue_io_u(td, &io_u);
726 if (__should_check_rate(td, DDIR_READ) ||
727 __should_check_rate(td, DDIR_WRITE) ||
728 __should_check_rate(td, DDIR_TRIM))
729 fio_gettime(&comp_time, NULL);
731 ret = io_u_sync_complete(td, io_u, bytes_done);
738 * if the engine doesn't have a commit hook,
739 * the io_u is really queued. if it does have such
740 * a hook, it has to call io_u_queued() itself.
742 if (td->io_ops->commit == NULL)
743 io_u_queued(td, io_u);
746 requeue_io_u(td, &io_u);
747 ret2 = td_io_commit(td);
757 if (break_on_this_error(td, ddir, &ret))
761 * See if we need to complete some commands. Note that we
762 * can get BUSY even without IO queued, if the system is
765 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
766 if (full || !td->o.iodepth_batch_complete) {
767 min_evts = min(td->o.iodepth_batch_complete,
770 * if the queue is full, we MUST reap at least 1 event
772 if (full && !min_evts)
775 if (__should_check_rate(td, DDIR_READ) ||
776 __should_check_rate(td, DDIR_WRITE) ||
777 __should_check_rate(td, DDIR_TRIM))
778 fio_gettime(&comp_time, NULL);
781 ret = io_u_queued_complete(td, min_evts, bytes_done);
785 } while (full && (td->cur_depth > td->o.iodepth_low));
790 if (!ddir_rw_sum(bytes_done) && !(td->io_ops->flags & FIO_NOIO))
793 if (!in_ramp_time(td) && should_check_rate(td, bytes_done)) {
794 if (check_min_rate(td, &comp_time, bytes_done)) {
795 if (exitall_on_terminate)
796 fio_terminate_threads(td->groupid);
797 td_verror(td, EIO, "check_min_rate");
802 if (td->o.thinktime) {
803 unsigned long long b;
805 b = ddir_rw_sum(td->io_blocks);
806 if (!(b % td->o.thinktime_blocks)) {
809 if (td->o.thinktime_spin)
810 usec_spin(td->o.thinktime_spin);
812 left = td->o.thinktime - td->o.thinktime_spin;
814 usec_sleep(td, left);
819 if (td->trim_entries)
820 log_err("fio: %d trim entries leaked?\n", td->trim_entries);
822 if (td->o.fill_device && td->error == ENOSPC) {
831 ret = io_u_queued_complete(td, i, bytes_done);
832 if (td->o.fill_device && td->error == ENOSPC)
836 if (should_fsync(td) && td->o.end_fsync) {
837 td_set_runstate(td, TD_FSYNCING);
839 for_each_file(td, f, i) {
840 if (!fio_file_fsync(td, f))
843 log_err("fio: end_fsync failed for file %s\n",
848 cleanup_pending_aio(td);
851 * stop job if we failed doing any IO
853 if (!ddir_rw_sum(td->this_io_bytes))
856 return bytes_done[DDIR_WRITE] + bytes_done[DDIR_TRIM];
859 static void cleanup_io_u(struct thread_data *td)
861 struct flist_head *entry, *n;
864 flist_for_each_safe(entry, n, &td->io_u_freelist) {
865 io_u = flist_entry(entry, struct io_u, list);
867 flist_del(&io_u->list);
869 if (td->io_ops->io_u_free)
870 td->io_ops->io_u_free(td, io_u);
872 fio_memfree(io_u, sizeof(*io_u));
878 static int init_io_u(struct thread_data *td)
881 unsigned int max_bs, min_write;
882 int cl_align, i, max_units;
886 max_units = td->o.iodepth;
887 max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
888 max_bs = max(td->o.max_bs[DDIR_TRIM], max_bs);
889 min_write = td->o.min_bs[DDIR_WRITE];
890 td->orig_buffer_size = (unsigned long long) max_bs
891 * (unsigned long long) max_units;
893 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
896 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
899 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
900 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
903 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
904 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
908 if (data_xfer && allocate_io_mem(td))
911 if (td->o.odirect || td->o.mem_align ||
912 (td->io_ops->flags & FIO_RAWIO))
913 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
917 cl_align = os_cache_line_size();
919 for (i = 0; i < max_units; i++) {
925 ptr = fio_memalign(cl_align, sizeof(*io_u));
927 log_err("fio: unable to allocate aligned memory\n");
932 memset(io_u, 0, sizeof(*io_u));
933 INIT_FLIST_HEAD(&io_u->list);
934 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
938 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
941 io_u_fill_buffer(td, io_u, min_write, max_bs);
942 if (td_write(td) && td->o.verify_pattern_bytes) {
944 * Fill the buffer with the pattern if we are
945 * going to be doing writes.
947 fill_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
952 io_u->flags = IO_U_F_FREE;
953 flist_add(&io_u->list, &td->io_u_freelist);
955 if (td->io_ops->io_u_init) {
956 int ret = td->io_ops->io_u_init(td, io_u);
959 log_err("fio: failed to init engine data: %d\n", ret);
970 static int switch_ioscheduler(struct thread_data *td)
972 char tmp[256], tmp2[128];
976 if (td->io_ops->flags & FIO_DISKLESSIO)
979 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
981 f = fopen(tmp, "r+");
983 if (errno == ENOENT) {
984 log_err("fio: os or kernel doesn't support IO scheduler"
988 td_verror(td, errno, "fopen iosched");
995 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
996 if (ferror(f) || ret != 1) {
997 td_verror(td, errno, "fwrite");
1005 * Read back and check that the selected scheduler is now the default.
1007 ret = fread(tmp, 1, sizeof(tmp), f);
1008 if (ferror(f) || ret < 0) {
1009 td_verror(td, errno, "fread");
1014 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1015 if (!strstr(tmp, tmp2)) {
1016 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1017 td_verror(td, EINVAL, "iosched_switch");
1026 static int keep_running(struct thread_data *td)
1030 if (td->o.time_based)
1037 if (ddir_rw_sum(td->io_bytes) < td->o.size) {
1041 * If the difference is less than the minimum IO size, we
1044 diff = td->o.size - ddir_rw_sum(td->io_bytes);
1045 if (diff < td->o.rw_min_bs)
1054 static int exec_string(const char *string)
1056 int ret, newlen = strlen(string) + 1 + 8;
1059 str = malloc(newlen);
1060 sprintf(str, "sh -c %s", string);
1064 log_err("fio: exec of cmd <%s> failed\n", str);
1071 * Entry point for the thread based jobs. The process based jobs end up
1072 * here as well, after a little setup.
1074 static void *thread_main(void *data)
1076 unsigned long long elapsed;
1077 struct thread_data *td = data;
1078 pthread_condattr_t attr;
1081 if (!td->o.use_thread) {
1087 fio_local_clock_init(td->o.use_thread);
1089 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1091 INIT_FLIST_HEAD(&td->io_u_freelist);
1092 INIT_FLIST_HEAD(&td->io_u_busylist);
1093 INIT_FLIST_HEAD(&td->io_u_requeues);
1094 INIT_FLIST_HEAD(&td->io_log_list);
1095 INIT_FLIST_HEAD(&td->io_hist_list);
1096 INIT_FLIST_HEAD(&td->verify_list);
1097 INIT_FLIST_HEAD(&td->trim_list);
1098 INIT_FLIST_HEAD(&td->next_rand_list);
1099 pthread_mutex_init(&td->io_u_lock, NULL);
1100 td->io_hist_tree = RB_ROOT;
1102 pthread_condattr_init(&attr);
1103 pthread_cond_init(&td->verify_cond, &attr);
1104 pthread_cond_init(&td->free_cond, &attr);
1106 td_set_runstate(td, TD_INITIALIZED);
1107 dprint(FD_MUTEX, "up startup_mutex\n");
1108 fio_mutex_up(startup_mutex);
1109 dprint(FD_MUTEX, "wait on td->mutex\n");
1110 fio_mutex_down(td->mutex);
1111 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1114 * the ->mutex mutex is now no longer used, close it to avoid
1115 * eating a file descriptor
1117 fio_mutex_remove(td->mutex);
1120 * A new gid requires privilege, so we need to do this before setting
1123 if (td->o.gid != -1U && setgid(td->o.gid)) {
1124 td_verror(td, errno, "setgid");
1127 if (td->o.uid != -1U && setuid(td->o.uid)) {
1128 td_verror(td, errno, "setuid");
1133 * If we have a gettimeofday() thread, make sure we exclude that
1134 * thread from this job
1137 fio_cpu_clear(&td->o.cpumask, td->o.gtod_cpu);
1140 * Set affinity first, in case it has an impact on the memory
1143 if (td->o.cpumask_set && fio_setaffinity(td->pid, td->o.cpumask) == -1) {
1144 td_verror(td, errno, "cpu_set_affinity");
1148 #ifdef CONFIG_LIBNUMA
1149 /* numa node setup */
1150 if (td->o.numa_cpumask_set || td->o.numa_memmask_set) {
1153 if (numa_available() < 0) {
1154 td_verror(td, errno, "Does not support NUMA API\n");
1158 if (td->o.numa_cpumask_set) {
1159 ret = numa_run_on_node_mask(td->o.numa_cpunodesmask);
1161 td_verror(td, errno, \
1162 "numa_run_on_node_mask failed\n");
1167 if (td->o.numa_memmask_set) {
1169 switch (td->o.numa_mem_mode) {
1170 case MPOL_INTERLEAVE:
1171 numa_set_interleave_mask(td->o.numa_memnodesmask);
1174 numa_set_membind(td->o.numa_memnodesmask);
1177 numa_set_localalloc();
1179 case MPOL_PREFERRED:
1180 numa_set_preferred(td->o.numa_mem_prefer_node);
1192 * May alter parameters that init_io_u() will use, so we need to
1201 if (td->o.verify_async && verify_async_init(td))
1204 if (td->ioprio_set) {
1205 if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) {
1206 td_verror(td, errno, "ioprio_set");
1211 if (td->o.cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1215 if (nice(td->o.nice) == -1 && errno != 0) {
1216 td_verror(td, errno, "nice");
1220 if (td->o.ioscheduler && switch_ioscheduler(td))
1223 if (!td->o.create_serialize && setup_files(td))
1229 if (init_random_map(td))
1232 if (td->o.exec_prerun) {
1233 if (exec_string(td->o.exec_prerun))
1237 if (td->o.pre_read) {
1238 if (pre_read_files(td) < 0)
1242 fio_gettime(&td->epoch, NULL);
1243 fio_getrusage(&td->ru_start);
1245 while (keep_running(td)) {
1246 uint64_t verify_bytes;
1248 fio_gettime(&td->start, NULL);
1249 memcpy(&td->bw_sample_time, &td->start, sizeof(td->start));
1250 memcpy(&td->iops_sample_time, &td->start, sizeof(td->start));
1251 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1253 if (td->o.ratemin[DDIR_READ] || td->o.ratemin[DDIR_WRITE] ||
1254 td->o.ratemin[DDIR_TRIM]) {
1255 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1256 sizeof(td->bw_sample_time));
1257 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1258 sizeof(td->bw_sample_time));
1259 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1260 sizeof(td->bw_sample_time));
1266 prune_io_piece_log(td);
1268 verify_bytes = do_io(td);
1272 if (td_read(td) && td->io_bytes[DDIR_READ]) {
1273 elapsed = utime_since_now(&td->start);
1274 td->ts.runtime[DDIR_READ] += elapsed;
1276 if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
1277 elapsed = utime_since_now(&td->start);
1278 td->ts.runtime[DDIR_WRITE] += elapsed;
1280 if (td_trim(td) && td->io_bytes[DDIR_TRIM]) {
1281 elapsed = utime_since_now(&td->start);
1282 td->ts.runtime[DDIR_TRIM] += elapsed;
1285 if (td->error || td->terminate)
1288 if (!td->o.do_verify ||
1289 td->o.verify == VERIFY_NONE ||
1290 (td->io_ops->flags & FIO_UNIDIR))
1295 fio_gettime(&td->start, NULL);
1297 do_verify(td, verify_bytes);
1299 td->ts.runtime[DDIR_READ] += utime_since_now(&td->start);
1301 if (td->error || td->terminate)
1305 update_rusage_stat(td);
1306 td->ts.runtime[DDIR_READ] = (td->ts.runtime[DDIR_READ] + 999) / 1000;
1307 td->ts.runtime[DDIR_WRITE] = (td->ts.runtime[DDIR_WRITE] + 999) / 1000;
1308 td->ts.runtime[DDIR_TRIM] = (td->ts.runtime[DDIR_TRIM] + 999) / 1000;
1309 td->ts.total_run_time = mtime_since_now(&td->epoch);
1310 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1311 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1312 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1314 fio_mutex_down(writeout_mutex);
1316 if (td->o.bw_log_file) {
1317 finish_log_named(td, td->bw_log,
1318 td->o.bw_log_file, "bw");
1320 finish_log(td, td->bw_log, "bw");
1323 if (td->o.lat_log_file) {
1324 finish_log_named(td, td->lat_log,
1325 td->o.lat_log_file, "lat");
1327 finish_log(td, td->lat_log, "lat");
1330 if (td->o.lat_log_file) {
1331 finish_log_named(td, td->slat_log,
1332 td->o.lat_log_file, "slat");
1334 finish_log(td, td->slat_log, "slat");
1337 if (td->o.lat_log_file) {
1338 finish_log_named(td, td->clat_log,
1339 td->o.lat_log_file, "clat");
1341 finish_log(td, td->clat_log, "clat");
1344 if (td->o.iops_log_file) {
1345 finish_log_named(td, td->iops_log,
1346 td->o.iops_log_file, "iops");
1348 finish_log(td, td->iops_log, "iops");
1351 fio_mutex_up(writeout_mutex);
1352 if (td->o.exec_postrun)
1353 exec_string(td->o.exec_postrun);
1355 if (exitall_on_terminate)
1356 fio_terminate_threads(td->groupid);
1360 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1363 if (td->o.verify_async)
1364 verify_async_exit(td);
1366 close_and_free_files(td);
1369 cgroup_shutdown(td, &cgroup_mnt);
1371 if (td->o.cpumask_set) {
1372 int ret = fio_cpuset_exit(&td->o.cpumask);
1374 td_verror(td, ret, "fio_cpuset_exit");
1378 * do this very late, it will log file closing as well
1380 if (td->o.write_iolog_file)
1381 write_iolog_close(td);
1383 td_set_runstate(td, TD_EXITED);
1384 return (void *) (uintptr_t) td->error;
1389 * We cannot pass the td data into a forked process, so attach the td and
1390 * pass it to the thread worker.
1392 static int fork_main(int shmid, int offset)
1394 struct thread_data *td;
1398 data = shmat(shmid, NULL, 0);
1399 if (data == (void *) -1) {
1407 * HP-UX inherits shm mappings?
1412 td = data + offset * sizeof(struct thread_data);
1413 ret = thread_main(td);
1415 return (int) (uintptr_t) ret;
1419 * Run over the job map and reap the threads that have exited, if any.
1421 static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1422 unsigned int *m_rate)
1424 struct thread_data *td;
1425 unsigned int cputhreads, realthreads, pending;
1429 * reap exited threads (TD_EXITED -> TD_REAPED)
1431 realthreads = pending = cputhreads = 0;
1432 for_each_td(td, i) {
1436 * ->io_ops is NULL for a thread that has closed its
1439 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1448 if (td->runstate == TD_REAPED)
1450 if (td->o.use_thread) {
1451 if (td->runstate == TD_EXITED) {
1452 td_set_runstate(td, TD_REAPED);
1459 if (td->runstate == TD_EXITED)
1463 * check if someone quit or got killed in an unusual way
1465 ret = waitpid(td->pid, &status, flags);
1467 if (errno == ECHILD) {
1468 log_err("fio: pid=%d disappeared %d\n",
1469 (int) td->pid, td->runstate);
1471 td_set_runstate(td, TD_REAPED);
1475 } else if (ret == td->pid) {
1476 if (WIFSIGNALED(status)) {
1477 int sig = WTERMSIG(status);
1479 if (sig != SIGTERM && sig != SIGUSR2)
1480 log_err("fio: pid=%d, got signal=%d\n",
1481 (int) td->pid, sig);
1483 td_set_runstate(td, TD_REAPED);
1486 if (WIFEXITED(status)) {
1487 if (WEXITSTATUS(status) && !td->error)
1488 td->error = WEXITSTATUS(status);
1490 td_set_runstate(td, TD_REAPED);
1496 * thread is not dead, continue
1502 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1503 (*t_rate) -= ddir_rw_sum(td->o.rate);
1510 done_secs += mtime_since_now(&td->epoch) / 1000;
1513 if (*nr_running == cputhreads && !pending && realthreads)
1514 fio_terminate_threads(TERMINATE_ALL);
1518 * Main function for kicking off and reaping jobs, as needed.
1520 static void run_threads(void)
1522 struct thread_data *td;
1523 unsigned long spent;
1524 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
1526 if (fio_pin_memory())
1529 if (fio_gtod_offload && fio_start_gtod_thread())
1532 fio_idle_prof_init();
1536 if (output_format == FIO_OUTPUT_NORMAL) {
1537 log_info("Starting ");
1539 log_info("%d thread%s", nr_thread,
1540 nr_thread > 1 ? "s" : "");
1544 log_info("%d process%s", nr_process,
1545 nr_process > 1 ? "es" : "");
1551 todo = thread_number;
1554 m_rate = t_rate = 0;
1556 for_each_td(td, i) {
1557 print_status_init(td->thread_number - 1);
1559 if (!td->o.create_serialize)
1563 * do file setup here so it happens sequentially,
1564 * we don't want X number of threads getting their
1565 * client data interspersed on disk
1567 if (setup_files(td)) {
1570 log_err("fio: pid=%d, err=%d/%s\n",
1571 (int) td->pid, td->error, td->verror);
1572 td_set_runstate(td, TD_REAPED);
1579 * for sharing to work, each job must always open
1580 * its own files. so close them, if we opened them
1583 for_each_file(td, f, j) {
1584 if (fio_file_open(f))
1585 td_io_close_file(td, f);
1590 /* start idle threads before io threads start to run */
1591 fio_idle_prof_start();
1596 struct thread_data *map[REAL_MAX_JOBS];
1597 struct timeval this_start;
1598 int this_jobs = 0, left;
1601 * create threads (TD_NOT_CREATED -> TD_CREATED)
1603 for_each_td(td, i) {
1604 if (td->runstate != TD_NOT_CREATED)
1608 * never got a chance to start, killed by other
1609 * thread for some reason
1611 if (td->terminate) {
1616 if (td->o.start_delay) {
1617 spent = mtime_since_genesis();
1619 if (td->o.start_delay * 1000 > spent)
1623 if (td->o.stonewall && (nr_started || nr_running)) {
1624 dprint(FD_PROCESS, "%s: stonewall wait\n",
1632 * Set state to created. Thread will transition
1633 * to TD_INITIALIZED when it's done setting up.
1635 td_set_runstate(td, TD_CREATED);
1636 map[this_jobs++] = td;
1639 if (td->o.use_thread) {
1642 dprint(FD_PROCESS, "will pthread_create\n");
1643 ret = pthread_create(&td->thread, NULL,
1646 log_err("pthread_create: %s\n",
1651 ret = pthread_detach(td->thread);
1653 log_err("pthread_detach: %s",
1657 dprint(FD_PROCESS, "will fork\n");
1660 int ret = fork_main(shm_id, i);
1663 } else if (i == fio_debug_jobno)
1664 *fio_debug_jobp = pid;
1666 dprint(FD_MUTEX, "wait on startup_mutex\n");
1667 if (fio_mutex_down_timeout(startup_mutex, 10)) {
1668 log_err("fio: job startup hung? exiting.\n");
1669 fio_terminate_threads(TERMINATE_ALL);
1674 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1678 * Wait for the started threads to transition to
1681 fio_gettime(&this_start, NULL);
1683 while (left && !fio_abort) {
1684 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
1689 for (i = 0; i < this_jobs; i++) {
1693 if (td->runstate == TD_INITIALIZED) {
1696 } else if (td->runstate >= TD_EXITED) {
1700 nr_running++; /* work-around... */
1706 log_err("fio: %d job%s failed to start\n", left,
1707 left > 1 ? "s" : "");
1708 for (i = 0; i < this_jobs; i++) {
1712 kill(td->pid, SIGTERM);
1718 * start created threads (TD_INITIALIZED -> TD_RUNNING).
1720 for_each_td(td, i) {
1721 if (td->runstate != TD_INITIALIZED)
1724 if (in_ramp_time(td))
1725 td_set_runstate(td, TD_RAMP);
1727 td_set_runstate(td, TD_RUNNING);
1730 m_rate += ddir_rw_sum(td->o.ratemin);
1731 t_rate += ddir_rw_sum(td->o.rate);
1733 fio_mutex_up(td->mutex);
1736 reap_threads(&nr_running, &t_rate, &m_rate);
1740 fio_server_idle_loop();
1746 while (nr_running) {
1747 reap_threads(&nr_running, &t_rate, &m_rate);
1750 fio_server_idle_loop();
1755 fio_idle_prof_stop();
1761 void wait_for_disk_thread_exit(void)
1763 fio_mutex_down(disk_thread_mutex);
1766 static void free_disk_util(void)
1768 disk_util_start_exit();
1769 wait_for_disk_thread_exit();
1770 disk_util_prune_entries();
1773 static void *disk_thread_main(void *data)
1777 fio_mutex_up(startup_mutex);
1779 while (threads && !ret) {
1780 usleep(DISK_UTIL_MSEC * 1000);
1783 ret = update_io_ticks();
1786 print_thread_status();
1789 fio_mutex_up(disk_thread_mutex);
1793 static int create_disk_util_thread(void)
1799 disk_thread_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1801 ret = pthread_create(&disk_util_thread, NULL, disk_thread_main, NULL);
1803 fio_mutex_remove(disk_thread_mutex);
1804 log_err("Can't create disk util thread: %s\n", strerror(ret));
1808 ret = pthread_detach(disk_util_thread);
1810 fio_mutex_remove(disk_thread_mutex);
1811 log_err("Can't detatch disk util thread: %s\n", strerror(ret));
1815 dprint(FD_MUTEX, "wait on startup_mutex\n");
1816 fio_mutex_down(startup_mutex);
1817 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1821 int fio_backend(void)
1823 struct thread_data *td;
1827 if (load_profile(exec_profile))
1830 exec_profile = NULL;
1836 setup_log(&agg_io_log[DDIR_READ], 0);
1837 setup_log(&agg_io_log[DDIR_WRITE], 0);
1838 setup_log(&agg_io_log[DDIR_TRIM], 0);
1841 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1842 if (startup_mutex == NULL)
1844 writeout_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1845 if (writeout_mutex == NULL)
1849 create_disk_util_thread();
1851 cgroup_list = smalloc(sizeof(*cgroup_list));
1852 INIT_FLIST_HEAD(cgroup_list);
1859 __finish_log(agg_io_log[DDIR_READ], "agg-read_bw.log");
1860 __finish_log(agg_io_log[DDIR_WRITE],
1861 "agg-write_bw.log");
1862 __finish_log(agg_io_log[DDIR_TRIM],
1863 "agg-write_bw.log");
1868 fio_options_free(td);
1871 cgroup_kill(cgroup_list);
1875 fio_mutex_remove(startup_mutex);
1876 fio_mutex_remove(writeout_mutex);
1877 fio_mutex_remove(disk_thread_mutex);