2 * fio - the flexible io tester
4 * Copyright (C) 2005 Jens Axboe <axboe@suse.de>
5 * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
7 * The license below covers all files distributed with fio unless otherwise
8 * noted in the file itself.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
40 #ifndef FIO_NO_HAVE_SHM_H
53 #include "lib/getrusage.h"
57 static pthread_t disk_util_thread;
58 static struct fio_mutex *disk_thread_mutex;
59 static struct fio_mutex *startup_mutex;
60 static struct flist_head *cgroup_list;
61 static char *cgroup_mnt;
62 static int exit_value;
63 static volatile int fio_abort;
64 static unsigned int nr_process = 0;
65 static unsigned int nr_thread = 0;
67 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
70 unsigned int thread_number = 0;
71 unsigned int stat_number = 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)
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) {
257 io_u_qiter(&td->io_u_all, io_u, i) {
258 if (io_u->flags & IO_U_F_FLIGHT) {
259 r = td->io_ops->cancel(td, io_u);
267 r = io_u_queued_complete(td, td->cur_depth, NULL);
271 * Helper to handle the final sync of a file. Works just like the normal
272 * io path, just does everything sync.
274 static int fio_io_sync(struct thread_data *td, struct fio_file *f)
276 struct io_u *io_u = __get_io_u(td);
282 io_u->ddir = DDIR_SYNC;
285 if (td_io_prep(td, io_u)) {
291 ret = td_io_queue(td, io_u);
293 td_verror(td, io_u->error, "td_io_queue");
296 } else if (ret == FIO_Q_QUEUED) {
297 if (io_u_queued_complete(td, 1, NULL) < 0)
299 } else if (ret == FIO_Q_COMPLETED) {
301 td_verror(td, io_u->error, "td_io_queue");
305 if (io_u_sync_complete(td, io_u, NULL) < 0)
307 } else if (ret == FIO_Q_BUSY) {
308 if (td_io_commit(td))
316 static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
320 if (fio_file_open(f))
321 return fio_io_sync(td, f);
323 if (td_io_open_file(td, f))
326 ret = fio_io_sync(td, f);
327 td_io_close_file(td, f);
331 static inline void __update_tv_cache(struct thread_data *td)
333 fio_gettime(&td->tv_cache, NULL);
336 static inline void update_tv_cache(struct thread_data *td)
338 if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
339 __update_tv_cache(td);
342 static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
344 if (in_ramp_time(td))
348 if (utime_since(&td->epoch, t) >= td->o.timeout)
354 static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
359 if (ret < 0 || td->error) {
361 enum error_type_bit eb;
366 eb = td_error_type(ddir, err);
367 if (!(td->o.continue_on_error & (1 << eb)))
370 if (td_non_fatal_error(td, eb, err)) {
372 * Continue with the I/Os in case of
375 update_error_count(td, err);
379 } else if (td->o.fill_device && err == ENOSPC) {
381 * We expect to hit this error if
382 * fill_device option is set.
389 * Stop the I/O in case of a fatal
392 update_error_count(td, err);
400 static void check_update_rusage(struct thread_data *td)
402 if (td->update_rusage) {
403 td->update_rusage = 0;
404 update_rusage_stat(td);
405 fio_mutex_up(td->rusage_sem);
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))
436 check_update_rusage(td);
441 td_set_runstate(td, TD_VERIFYING);
444 while (!td->terminate) {
449 check_update_rusage(td);
451 if (runtime_exceeded(td, &td->tv_cache)) {
452 __update_tv_cache(td);
453 if (runtime_exceeded(td, &td->tv_cache)) {
459 if (flow_threshold_exceeded(td))
462 if (!td->o.experimental_verify) {
463 io_u = __get_io_u(td);
467 if (get_next_verify(td, io_u)) {
472 if (td_io_prep(td, io_u)) {
477 if (ddir_rw_sum(bytes_done) + td->o.rw_min_bs > verify_bytes)
480 while ((io_u = get_io_u(td)) != NULL) {
488 * We are only interested in the places where
489 * we wrote or trimmed IOs. Turn those into
490 * reads for verification purposes.
492 if (io_u->ddir == DDIR_READ) {
494 * Pretend we issued it for rwmix
497 td->io_issues[DDIR_READ]++;
500 } else if (io_u->ddir == DDIR_TRIM) {
501 io_u->ddir = DDIR_READ;
502 io_u->flags |= IO_U_F_TRIMMED;
504 } else if (io_u->ddir == DDIR_WRITE) {
505 io_u->ddir = DDIR_READ;
517 if (td->o.verify_async)
518 io_u->end_io = verify_io_u_async;
520 io_u->end_io = verify_io_u;
524 ret = td_io_queue(td, io_u);
526 case FIO_Q_COMPLETED:
529 clear_io_u(td, io_u);
530 } else if (io_u->resid) {
531 int bytes = io_u->xfer_buflen - io_u->resid;
537 td_verror(td, EIO, "full resid");
542 io_u->xfer_buflen = io_u->resid;
543 io_u->xfer_buf += bytes;
544 io_u->offset += bytes;
546 if (ddir_rw(io_u->ddir))
547 td->ts.short_io_u[io_u->ddir]++;
550 if (io_u->offset == f->real_file_size)
553 requeue_io_u(td, &io_u);
556 ret = io_u_sync_complete(td, io_u, bytes_done);
564 requeue_io_u(td, &io_u);
565 ret2 = td_io_commit(td);
571 td_verror(td, -ret, "td_io_queue");
575 if (break_on_this_error(td, ddir, &ret))
579 * if we can queue more, do so. but check if there are
580 * completed io_u's first. Note that we can get BUSY even
581 * without IO queued, if the system is resource starved.
584 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
585 if (full || !td->o.iodepth_batch_complete) {
586 min_events = min(td->o.iodepth_batch_complete,
589 * if the queue is full, we MUST reap at least 1 event
591 if (full && !min_events)
596 * Reap required number of io units, if any,
597 * and do the verification on them through
598 * the callback handler
600 if (io_u_queued_complete(td, min_events, bytes_done) < 0) {
604 } while (full && (td->cur_depth > td->o.iodepth_low));
610 check_update_rusage(td);
613 min_events = td->cur_depth;
616 ret = io_u_queued_complete(td, min_events, NULL);
618 cleanup_pending_aio(td);
620 td_set_runstate(td, TD_RUNNING);
622 dprint(FD_VERIFY, "exiting loop\n");
625 static unsigned int exceeds_number_ios(struct thread_data *td)
627 unsigned long long number_ios;
629 if (!td->o.number_ios)
632 number_ios = ddir_rw_sum(td->this_io_blocks);
633 number_ios += td->io_u_queued + td->io_u_in_flight;
635 return number_ios >= td->o.number_ios;
638 static int io_bytes_exceeded(struct thread_data *td)
640 unsigned long long bytes;
643 bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE];
644 else if (td_write(td))
645 bytes = td->this_io_bytes[DDIR_WRITE];
646 else if (td_read(td))
647 bytes = td->this_io_bytes[DDIR_READ];
649 bytes = td->this_io_bytes[DDIR_TRIM];
651 return bytes >= td->o.size || exceeds_number_ios(td);
655 * Main IO worker function. It retrieves io_u's to process and queues
656 * and reaps them, checking for rate and errors along the way.
658 * Returns number of bytes written and trimmed.
660 static uint64_t do_io(struct thread_data *td)
662 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
665 uint64_t total_bytes, bytes_issued = 0;
667 if (in_ramp_time(td))
668 td_set_runstate(td, TD_RAMP);
670 td_set_runstate(td, TD_RUNNING);
675 * If verify_backlog is enabled, we'll run the verify in this
676 * handler as well. For that case, we may need up to twice the
679 total_bytes = td->o.size;
680 if (td->o.verify != VERIFY_NONE &&
681 (td_write(td) && td->o.verify_backlog))
682 total_bytes += td->o.size;
684 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
685 (!flist_empty(&td->trim_list)) || !io_bytes_exceeded(td) ||
687 struct timeval comp_time;
693 check_update_rusage(td);
695 if (td->terminate || td->done)
700 if (runtime_exceeded(td, &td->tv_cache)) {
701 __update_tv_cache(td);
702 if (runtime_exceeded(td, &td->tv_cache)) {
708 if (flow_threshold_exceeded(td))
711 if (bytes_issued >= total_bytes)
715 if (IS_ERR_OR_NULL(io_u)) {
716 int err = PTR_ERR(io_u);
723 if (td->o.latency_target)
731 * Add verification end_io handler if:
732 * - Asked to verify (!td_rw(td))
733 * - Or the io_u is from our verify list (mixed write/ver)
735 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
736 ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) {
738 if (!td->o.verify_pattern_bytes) {
739 io_u->rand_seed = __rand(&td->__verify_state);
740 if (sizeof(int) != sizeof(long *))
741 io_u->rand_seed *= __rand(&td->__verify_state);
744 if (td->o.verify_async)
745 io_u->end_io = verify_io_u_async;
747 io_u->end_io = verify_io_u;
748 td_set_runstate(td, TD_VERIFYING);
749 } else if (in_ramp_time(td))
750 td_set_runstate(td, TD_RAMP);
752 td_set_runstate(td, TD_RUNNING);
755 * Always log IO before it's issued, so we know the specific
756 * order of it. The logged unit will track when the IO has
759 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
761 td->o.verify != VERIFY_NONE &&
762 !td->o.experimental_verify)
763 log_io_piece(td, io_u);
765 ret = td_io_queue(td, io_u);
767 case FIO_Q_COMPLETED:
770 clear_io_u(td, io_u);
771 } else if (io_u->resid) {
772 int bytes = io_u->xfer_buflen - io_u->resid;
773 struct fio_file *f = io_u->file;
775 bytes_issued += bytes;
780 td_verror(td, EIO, "full resid");
785 io_u->xfer_buflen = io_u->resid;
786 io_u->xfer_buf += bytes;
787 io_u->offset += bytes;
789 if (ddir_rw(io_u->ddir))
790 td->ts.short_io_u[io_u->ddir]++;
792 if (io_u->offset == f->real_file_size)
795 requeue_io_u(td, &io_u);
798 if (__should_check_rate(td, DDIR_READ) ||
799 __should_check_rate(td, DDIR_WRITE) ||
800 __should_check_rate(td, DDIR_TRIM))
801 fio_gettime(&comp_time, NULL);
803 ret = io_u_sync_complete(td, io_u, bytes_done);
806 bytes_issued += io_u->xfer_buflen;
811 * if the engine doesn't have a commit hook,
812 * the io_u is really queued. if it does have such
813 * a hook, it has to call io_u_queued() itself.
815 if (td->io_ops->commit == NULL)
816 io_u_queued(td, io_u);
817 bytes_issued += io_u->xfer_buflen;
820 requeue_io_u(td, &io_u);
821 ret2 = td_io_commit(td);
831 if (break_on_this_error(td, ddir, &ret))
835 * See if we need to complete some commands. Note that we
836 * can get BUSY even without IO queued, if the system is
840 full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
841 if (full || !td->o.iodepth_batch_complete) {
842 min_evts = min(td->o.iodepth_batch_complete,
845 * if the queue is full, we MUST reap at least 1 event
847 if (full && !min_evts)
850 if (__should_check_rate(td, DDIR_READ) ||
851 __should_check_rate(td, DDIR_WRITE) ||
852 __should_check_rate(td, DDIR_TRIM))
853 fio_gettime(&comp_time, NULL);
856 ret = io_u_queued_complete(td, min_evts, bytes_done);
860 } while (full && (td->cur_depth > td->o.iodepth_low));
865 if (!ddir_rw_sum(bytes_done) && !(td->io_ops->flags & FIO_NOIO))
868 if (!in_ramp_time(td) && should_check_rate(td, bytes_done)) {
869 if (check_min_rate(td, &comp_time, bytes_done)) {
870 if (exitall_on_terminate)
871 fio_terminate_threads(td->groupid);
872 td_verror(td, EIO, "check_min_rate");
876 if (!in_ramp_time(td) && td->o.latency_target)
877 lat_target_check(td);
879 if (td->o.thinktime) {
880 unsigned long long b;
882 b = ddir_rw_sum(td->io_blocks);
883 if (!(b % td->o.thinktime_blocks)) {
888 if (td->o.thinktime_spin)
889 usec_spin(td->o.thinktime_spin);
891 left = td->o.thinktime - td->o.thinktime_spin;
893 usec_sleep(td, left);
898 check_update_rusage(td);
900 if (td->trim_entries)
901 log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
903 if (td->o.fill_device && td->error == ENOSPC) {
912 ret = io_u_queued_complete(td, i, bytes_done);
913 if (td->o.fill_device && td->error == ENOSPC)
917 if (should_fsync(td) && td->o.end_fsync) {
918 td_set_runstate(td, TD_FSYNCING);
920 for_each_file(td, f, i) {
921 if (!fio_file_fsync(td, f))
924 log_err("fio: end_fsync failed for file %s\n",
929 cleanup_pending_aio(td);
932 * stop job if we failed doing any IO
934 if (!ddir_rw_sum(td->this_io_bytes))
937 return bytes_done[DDIR_WRITE] + bytes_done[DDIR_TRIM];
940 static void cleanup_io_u(struct thread_data *td)
944 while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
946 if (td->io_ops->io_u_free)
947 td->io_ops->io_u_free(td, io_u);
949 fio_memfree(io_u, sizeof(*io_u));
954 io_u_rexit(&td->io_u_requeues);
955 io_u_qexit(&td->io_u_freelist);
956 io_u_qexit(&td->io_u_all);
959 static int init_io_u(struct thread_data *td)
962 unsigned int max_bs, min_write;
963 int cl_align, i, max_units;
964 int data_xfer = 1, err;
967 max_units = td->o.iodepth;
968 max_bs = td_max_bs(td);
969 min_write = td->o.min_bs[DDIR_WRITE];
970 td->orig_buffer_size = (unsigned long long) max_bs
971 * (unsigned long long) max_units;
973 if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
977 err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
978 err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
979 err += io_u_qinit(&td->io_u_all, td->o.iodepth);
982 log_err("fio: failed setting up IO queues\n");
987 * if we may later need to do address alignment, then add any
988 * possible adjustment here so that we don't cause a buffer
989 * overflow later. this adjustment may be too much if we get
990 * lucky and the allocator gives us an aligned address.
992 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
993 (td->io_ops->flags & FIO_RAWIO))
994 td->orig_buffer_size += page_mask + td->o.mem_align;
996 if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
999 bs = td->orig_buffer_size + td->o.hugepage_size - 1;
1000 td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
1003 if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
1004 log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
1008 if (data_xfer && allocate_io_mem(td))
1011 if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
1012 (td->io_ops->flags & FIO_RAWIO))
1013 p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
1015 p = td->orig_buffer;
1017 cl_align = os_cache_line_size();
1019 for (i = 0; i < max_units; i++) {
1025 ptr = fio_memalign(cl_align, sizeof(*io_u));
1027 log_err("fio: unable to allocate aligned memory\n");
1032 memset(io_u, 0, sizeof(*io_u));
1033 INIT_FLIST_HEAD(&io_u->verify_list);
1034 dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
1038 dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
1041 io_u_fill_buffer(td, io_u, min_write, max_bs);
1042 if (td_write(td) && td->o.verify_pattern_bytes) {
1044 * Fill the buffer with the pattern if we are
1045 * going to be doing writes.
1047 fill_verify_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
1052 io_u->flags = IO_U_F_FREE;
1053 io_u_qpush(&td->io_u_freelist, io_u);
1056 * io_u never leaves this stack, used for iteration of all
1059 io_u_qpush(&td->io_u_all, io_u);
1061 if (td->io_ops->io_u_init) {
1062 int ret = td->io_ops->io_u_init(td, io_u);
1065 log_err("fio: failed to init engine data: %d\n", ret);
1076 static int switch_ioscheduler(struct thread_data *td)
1078 char tmp[256], tmp2[128];
1082 if (td->io_ops->flags & FIO_DISKLESSIO)
1085 sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
1087 f = fopen(tmp, "r+");
1089 if (errno == ENOENT) {
1090 log_err("fio: os or kernel doesn't support IO scheduler"
1094 td_verror(td, errno, "fopen iosched");
1101 ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
1102 if (ferror(f) || ret != 1) {
1103 td_verror(td, errno, "fwrite");
1111 * Read back and check that the selected scheduler is now the default.
1113 memset(tmp, 0, sizeof(tmp));
1114 ret = fread(tmp, 1, sizeof(tmp) - 1, f);
1115 if (ferror(f) || ret < 0) {
1116 td_verror(td, errno, "fread");
1121 sprintf(tmp2, "[%s]", td->o.ioscheduler);
1122 if (!strstr(tmp, tmp2)) {
1123 log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
1124 td_verror(td, EINVAL, "iosched_switch");
1133 static int keep_running(struct thread_data *td)
1137 if (td->o.time_based)
1143 if (exceeds_number_ios(td))
1146 if (td->o.size != -1ULL && ddir_rw_sum(td->io_bytes) < td->o.size) {
1150 * If the difference is less than the minimum IO size, we
1153 diff = td->o.size - ddir_rw_sum(td->io_bytes);
1154 if (diff < td_max_bs(td))
1157 if (fio_files_done(td))
1166 static int exec_string(struct thread_options *o, const char *string, const char *mode)
1168 int ret, newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
1171 str = malloc(newlen);
1172 sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
1174 log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
1177 log_err("fio: exec of cmd <%s> failed\n", str);
1184 * Dry run to compute correct state of numberio for verification.
1186 static uint64_t do_dry_run(struct thread_data *td)
1188 uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 };
1190 td_set_runstate(td, TD_RUNNING);
1192 while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
1193 (!flist_empty(&td->trim_list)) || !io_bytes_exceeded(td)) {
1197 if (td->terminate || td->done)
1200 io_u = get_io_u(td);
1204 io_u->flags |= IO_U_F_FLIGHT;
1207 if (ddir_rw(acct_ddir(io_u)))
1208 td->io_issues[acct_ddir(io_u)]++;
1209 if (ddir_rw(io_u->ddir)) {
1210 io_u_mark_depth(td, 1);
1211 td->ts.total_io_u[io_u->ddir]++;
1214 if (td_write(td) && io_u->ddir == DDIR_WRITE &&
1216 td->o.verify != VERIFY_NONE &&
1217 !td->o.experimental_verify)
1218 log_io_piece(td, io_u);
1220 ret = io_u_sync_complete(td, io_u, bytes_done);
1224 return bytes_done[DDIR_WRITE] + bytes_done[DDIR_TRIM];
1228 * Entry point for the thread based jobs. The process based jobs end up
1229 * here as well, after a little setup.
1231 static void *thread_main(void *data)
1233 unsigned long long elapsed;
1234 struct thread_data *td = data;
1235 struct thread_options *o = &td->o;
1236 pthread_condattr_t attr;
1240 if (!o->use_thread) {
1247 * fio_time_init() may not have been called yet if running as a server
1251 fio_local_clock_init(o->use_thread);
1253 dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
1256 fio_server_send_start(td);
1258 INIT_FLIST_HEAD(&td->io_log_list);
1259 INIT_FLIST_HEAD(&td->io_hist_list);
1260 INIT_FLIST_HEAD(&td->verify_list);
1261 INIT_FLIST_HEAD(&td->trim_list);
1262 INIT_FLIST_HEAD(&td->next_rand_list);
1263 pthread_mutex_init(&td->io_u_lock, NULL);
1264 td->io_hist_tree = RB_ROOT;
1266 pthread_condattr_init(&attr);
1267 pthread_cond_init(&td->verify_cond, &attr);
1268 pthread_cond_init(&td->free_cond, &attr);
1270 td_set_runstate(td, TD_INITIALIZED);
1271 dprint(FD_MUTEX, "up startup_mutex\n");
1272 fio_mutex_up(startup_mutex);
1273 dprint(FD_MUTEX, "wait on td->mutex\n");
1274 fio_mutex_down(td->mutex);
1275 dprint(FD_MUTEX, "done waiting on td->mutex\n");
1278 * A new gid requires privilege, so we need to do this before setting
1281 if (o->gid != -1U && setgid(o->gid)) {
1282 td_verror(td, errno, "setgid");
1285 if (o->uid != -1U && setuid(o->uid)) {
1286 td_verror(td, errno, "setuid");
1291 * If we have a gettimeofday() thread, make sure we exclude that
1292 * thread from this job
1295 fio_cpu_clear(&o->cpumask, o->gtod_cpu);
1298 * Set affinity first, in case it has an impact on the memory
1301 if (o->cpumask_set) {
1302 if (o->cpus_allowed_policy == FIO_CPUS_SPLIT) {
1303 ret = fio_cpus_split(&o->cpumask, td->thread_number - 1);
1305 log_err("fio: no CPUs set\n");
1306 log_err("fio: Try increasing number of available CPUs\n");
1307 td_verror(td, EINVAL, "cpus_split");
1311 ret = fio_setaffinity(td->pid, o->cpumask);
1313 td_verror(td, errno, "cpu_set_affinity");
1318 #ifdef CONFIG_LIBNUMA
1319 /* numa node setup */
1320 if (o->numa_cpumask_set || o->numa_memmask_set) {
1323 if (numa_available() < 0) {
1324 td_verror(td, errno, "Does not support NUMA API\n");
1328 if (o->numa_cpumask_set) {
1329 ret = numa_run_on_node_mask(o->numa_cpunodesmask);
1331 td_verror(td, errno, \
1332 "numa_run_on_node_mask failed\n");
1337 if (o->numa_memmask_set) {
1339 switch (o->numa_mem_mode) {
1340 case MPOL_INTERLEAVE:
1341 numa_set_interleave_mask(o->numa_memnodesmask);
1344 numa_set_membind(o->numa_memnodesmask);
1347 numa_set_localalloc();
1349 case MPOL_PREFERRED:
1350 numa_set_preferred(o->numa_mem_prefer_node);
1361 if (fio_pin_memory(td))
1365 * May alter parameters that init_io_u() will use, so we need to
1374 if (o->verify_async && verify_async_init(td))
1378 ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
1380 td_verror(td, errno, "ioprio_set");
1385 if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
1389 if (nice(o->nice) == -1 && errno != 0) {
1390 td_verror(td, errno, "nice");
1394 if (o->ioscheduler && switch_ioscheduler(td))
1397 if (!o->create_serialize && setup_files(td))
1403 if (init_random_map(td))
1406 if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
1410 if (pre_read_files(td) < 0)
1414 fio_verify_init(td);
1416 fio_gettime(&td->epoch, NULL);
1417 fio_getrusage(&td->ru_start);
1419 while (keep_running(td)) {
1420 uint64_t verify_bytes;
1422 fio_gettime(&td->start, NULL);
1423 memcpy(&td->bw_sample_time, &td->start, sizeof(td->start));
1424 memcpy(&td->iops_sample_time, &td->start, sizeof(td->start));
1425 memcpy(&td->tv_cache, &td->start, sizeof(td->start));
1427 if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
1428 o->ratemin[DDIR_TRIM]) {
1429 memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
1430 sizeof(td->bw_sample_time));
1431 memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
1432 sizeof(td->bw_sample_time));
1433 memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time,
1434 sizeof(td->bw_sample_time));
1440 prune_io_piece_log(td);
1442 if (td->o.verify_only && (td_write(td) || td_rw(td)))
1443 verify_bytes = do_dry_run(td);
1445 verify_bytes = do_io(td);
1449 if (td_read(td) && td->io_bytes[DDIR_READ]) {
1450 elapsed = utime_since_now(&td->start);
1451 td->ts.runtime[DDIR_READ] += elapsed;
1453 if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
1454 elapsed = utime_since_now(&td->start);
1455 td->ts.runtime[DDIR_WRITE] += elapsed;
1457 if (td_trim(td) && td->io_bytes[DDIR_TRIM]) {
1458 elapsed = utime_since_now(&td->start);
1459 td->ts.runtime[DDIR_TRIM] += elapsed;
1462 if (td->error || td->terminate)
1465 if (!o->do_verify ||
1466 o->verify == VERIFY_NONE ||
1467 (td->io_ops->flags & FIO_UNIDIR))
1472 fio_gettime(&td->start, NULL);
1474 do_verify(td, verify_bytes);
1476 td->ts.runtime[DDIR_READ] += utime_since_now(&td->start);
1478 if (td->error || td->terminate)
1482 update_rusage_stat(td);
1483 td->ts.runtime[DDIR_READ] = (td->ts.runtime[DDIR_READ] + 999) / 1000;
1484 td->ts.runtime[DDIR_WRITE] = (td->ts.runtime[DDIR_WRITE] + 999) / 1000;
1485 td->ts.runtime[DDIR_TRIM] = (td->ts.runtime[DDIR_TRIM] + 999) / 1000;
1486 td->ts.total_run_time = mtime_since_now(&td->epoch);
1487 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1488 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1489 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1491 fio_unpin_memory(td);
1493 fio_writeout_logs(td);
1495 if (o->exec_postrun)
1496 exec_string(o, o->exec_postrun, (const char *)"postrun");
1498 if (exitall_on_terminate)
1499 fio_terminate_threads(td->groupid);
1503 log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
1506 if (o->verify_async)
1507 verify_async_exit(td);
1509 close_and_free_files(td);
1512 cgroup_shutdown(td, &cgroup_mnt);
1514 if (o->cpumask_set) {
1515 int ret = fio_cpuset_exit(&o->cpumask);
1517 td_verror(td, ret, "fio_cpuset_exit");
1521 * do this very late, it will log file closing as well
1523 if (o->write_iolog_file)
1524 write_iolog_close(td);
1526 fio_mutex_remove(td->rusage_sem);
1527 td->rusage_sem = NULL;
1529 fio_mutex_remove(td->mutex);
1532 td_set_runstate(td, TD_EXITED);
1533 return (void *) (uintptr_t) td->error;
1538 * We cannot pass the td data into a forked process, so attach the td and
1539 * pass it to the thread worker.
1541 static int fork_main(int shmid, int offset)
1543 struct thread_data *td;
1547 data = shmat(shmid, NULL, 0);
1548 if (data == (void *) -1) {
1556 * HP-UX inherits shm mappings?
1561 td = data + offset * sizeof(struct thread_data);
1562 ret = thread_main(td);
1564 return (int) (uintptr_t) ret;
1568 * Run over the job map and reap the threads that have exited, if any.
1570 static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
1571 unsigned int *m_rate)
1573 struct thread_data *td;
1574 unsigned int cputhreads, realthreads, pending;
1578 * reap exited threads (TD_EXITED -> TD_REAPED)
1580 realthreads = pending = cputhreads = 0;
1581 for_each_td(td, i) {
1585 * ->io_ops is NULL for a thread that has closed its
1588 if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
1597 if (td->runstate == TD_REAPED)
1599 if (td->o.use_thread) {
1600 if (td->runstate == TD_EXITED) {
1601 td_set_runstate(td, TD_REAPED);
1608 if (td->runstate == TD_EXITED)
1612 * check if someone quit or got killed in an unusual way
1614 ret = waitpid(td->pid, &status, flags);
1616 if (errno == ECHILD) {
1617 log_err("fio: pid=%d disappeared %d\n",
1618 (int) td->pid, td->runstate);
1620 td_set_runstate(td, TD_REAPED);
1624 } else if (ret == td->pid) {
1625 if (WIFSIGNALED(status)) {
1626 int sig = WTERMSIG(status);
1628 if (sig != SIGTERM && sig != SIGUSR2)
1629 log_err("fio: pid=%d, got signal=%d\n",
1630 (int) td->pid, sig);
1632 td_set_runstate(td, TD_REAPED);
1635 if (WIFEXITED(status)) {
1636 if (WEXITSTATUS(status) && !td->error)
1637 td->error = WEXITSTATUS(status);
1639 td_set_runstate(td, TD_REAPED);
1645 * thread is not dead, continue
1651 (*m_rate) -= ddir_rw_sum(td->o.ratemin);
1652 (*t_rate) -= ddir_rw_sum(td->o.rate);
1659 done_secs += mtime_since_now(&td->epoch) / 1000;
1660 profile_td_exit(td);
1663 if (*nr_running == cputhreads && !pending && realthreads)
1664 fio_terminate_threads(TERMINATE_ALL);
1667 static void do_usleep(unsigned int usecs)
1669 check_for_running_stats();
1674 * Main function for kicking off and reaping jobs, as needed.
1676 static void run_threads(void)
1678 struct thread_data *td;
1679 unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
1682 if (fio_gtod_offload && fio_start_gtod_thread())
1685 fio_idle_prof_init();
1689 nr_thread = nr_process = 0;
1690 for_each_td(td, i) {
1691 if (td->o.use_thread)
1697 if (output_format == FIO_OUTPUT_NORMAL) {
1698 log_info("Starting ");
1700 log_info("%d thread%s", nr_thread,
1701 nr_thread > 1 ? "s" : "");
1705 log_info("%d process%s", nr_process,
1706 nr_process > 1 ? "es" : "");
1712 todo = thread_number;
1715 m_rate = t_rate = 0;
1717 for_each_td(td, i) {
1718 print_status_init(td->thread_number - 1);
1720 if (!td->o.create_serialize)
1724 * do file setup here so it happens sequentially,
1725 * we don't want X number of threads getting their
1726 * client data interspersed on disk
1728 if (setup_files(td)) {
1731 log_err("fio: pid=%d, err=%d/%s\n",
1732 (int) td->pid, td->error, td->verror);
1733 td_set_runstate(td, TD_REAPED);
1740 * for sharing to work, each job must always open
1741 * its own files. so close them, if we opened them
1744 for_each_file(td, f, j) {
1745 if (fio_file_open(f))
1746 td_io_close_file(td, f);
1751 /* start idle threads before io threads start to run */
1752 fio_idle_prof_start();
1757 struct thread_data *map[REAL_MAX_JOBS];
1758 struct timeval this_start;
1759 int this_jobs = 0, left;
1762 * create threads (TD_NOT_CREATED -> TD_CREATED)
1764 for_each_td(td, i) {
1765 if (td->runstate != TD_NOT_CREATED)
1769 * never got a chance to start, killed by other
1770 * thread for some reason
1772 if (td->terminate) {
1777 if (td->o.start_delay) {
1778 spent = utime_since_genesis();
1780 if (td->o.start_delay > spent)
1784 if (td->o.stonewall && (nr_started || nr_running)) {
1785 dprint(FD_PROCESS, "%s: stonewall wait\n",
1792 td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
1793 td->update_rusage = 0;
1796 * Set state to created. Thread will transition
1797 * to TD_INITIALIZED when it's done setting up.
1799 td_set_runstate(td, TD_CREATED);
1800 map[this_jobs++] = td;
1803 if (td->o.use_thread) {
1806 dprint(FD_PROCESS, "will pthread_create\n");
1807 ret = pthread_create(&td->thread, NULL,
1810 log_err("pthread_create: %s\n",
1815 ret = pthread_detach(td->thread);
1817 log_err("pthread_detach: %s",
1821 dprint(FD_PROCESS, "will fork\n");
1824 int ret = fork_main(shm_id, i);
1827 } else if (i == fio_debug_jobno)
1828 *fio_debug_jobp = pid;
1830 dprint(FD_MUTEX, "wait on startup_mutex\n");
1831 if (fio_mutex_down_timeout(startup_mutex, 10)) {
1832 log_err("fio: job startup hung? exiting.\n");
1833 fio_terminate_threads(TERMINATE_ALL);
1838 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1842 * Wait for the started threads to transition to
1845 fio_gettime(&this_start, NULL);
1847 while (left && !fio_abort) {
1848 if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
1853 for (i = 0; i < this_jobs; i++) {
1857 if (td->runstate == TD_INITIALIZED) {
1860 } else if (td->runstate >= TD_EXITED) {
1864 nr_running++; /* work-around... */
1870 log_err("fio: %d job%s failed to start\n", left,
1871 left > 1 ? "s" : "");
1872 for (i = 0; i < this_jobs; i++) {
1876 kill(td->pid, SIGTERM);
1882 * start created threads (TD_INITIALIZED -> TD_RUNNING).
1884 for_each_td(td, i) {
1885 if (td->runstate != TD_INITIALIZED)
1888 if (in_ramp_time(td))
1889 td_set_runstate(td, TD_RAMP);
1891 td_set_runstate(td, TD_RUNNING);
1894 m_rate += ddir_rw_sum(td->o.ratemin);
1895 t_rate += ddir_rw_sum(td->o.rate);
1897 fio_mutex_up(td->mutex);
1900 reap_threads(&nr_running, &t_rate, &m_rate);
1906 while (nr_running) {
1907 reap_threads(&nr_running, &t_rate, &m_rate);
1911 fio_idle_prof_stop();
1916 void wait_for_disk_thread_exit(void)
1918 fio_mutex_down(disk_thread_mutex);
1921 static void free_disk_util(void)
1923 disk_util_start_exit();
1924 wait_for_disk_thread_exit();
1925 disk_util_prune_entries();
1928 static void *disk_thread_main(void *data)
1932 fio_mutex_up(startup_mutex);
1934 while (threads && !ret) {
1935 usleep(DISK_UTIL_MSEC * 1000);
1938 ret = update_io_ticks();
1941 print_thread_status();
1944 fio_mutex_up(disk_thread_mutex);
1948 static int create_disk_util_thread(void)
1954 disk_thread_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1956 ret = pthread_create(&disk_util_thread, NULL, disk_thread_main, NULL);
1958 fio_mutex_remove(disk_thread_mutex);
1959 log_err("Can't create disk util thread: %s\n", strerror(ret));
1963 ret = pthread_detach(disk_util_thread);
1965 fio_mutex_remove(disk_thread_mutex);
1966 log_err("Can't detatch disk util thread: %s\n", strerror(ret));
1970 dprint(FD_MUTEX, "wait on startup_mutex\n");
1971 fio_mutex_down(startup_mutex);
1972 dprint(FD_MUTEX, "done waiting on startup_mutex\n");
1976 int fio_backend(void)
1978 struct thread_data *td;
1982 if (load_profile(exec_profile))
1985 exec_profile = NULL;
1991 setup_log(&agg_io_log[DDIR_READ], 0, IO_LOG_TYPE_BW);
1992 setup_log(&agg_io_log[DDIR_WRITE], 0, IO_LOG_TYPE_BW);
1993 setup_log(&agg_io_log[DDIR_TRIM], 0, IO_LOG_TYPE_BW);
1996 startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1997 if (startup_mutex == NULL)
2002 create_disk_util_thread();
2004 cgroup_list = smalloc(sizeof(*cgroup_list));
2005 INIT_FLIST_HEAD(cgroup_list);
2012 __finish_log(agg_io_log[DDIR_READ], "agg-read_bw.log");
2013 __finish_log(agg_io_log[DDIR_WRITE],
2014 "agg-write_bw.log");
2015 __finish_log(agg_io_log[DDIR_TRIM],
2016 "agg-write_bw.log");
2021 fio_options_free(td);
2024 cgroup_kill(cgroup_list);
2028 fio_mutex_remove(startup_mutex);
2029 fio_mutex_remove(disk_thread_mutex);