unsigned long done_secs = 0;
static struct fio_mutex *startup_mutex;
+static struct fio_mutex *writeout_mutex;
static volatile int fio_abort;
static int exit_value;
static struct itimerval itimer;
+static pthread_t gtod_thread;
struct io_log *agg_io_log[2];
}
}
+/*
+ * Happens on thread runs with ctrl-c, ignore our own SIGQUIT
+ */
+static void sig_quit(int sig)
+{
+}
+
static void sig_int(int sig)
{
if (threads) {
act.sa_handler = sig_ill;
act.sa_flags = SA_RESTART;
sigaction(SIGILL, &act, NULL);
+
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = sig_quit;
+ act.sa_flags = SA_RESTART;
+ sigaction(SIGQUIT, &act, NULL);
+}
+
+static inline int should_check_rate(struct thread_data *td)
+{
+ struct thread_options *o = &td->o;
+
+ /*
+ * If some rate setting was given, we need to check it
+ */
+ if (o->rate || o->ratemin || o->rate_iops || o->rate_iops_min)
+ return 1;
+
+ return 0;
}
/*
unsigned long spent;
unsigned long rate;
- /*
- * No minimum rate set, always ok
- */
- if (!td->o.ratemin && !td->o.rate_iops_min)
- return 0;
-
/*
* allow a 2 second settle period in the beginning
*/
return 0;
}
+static inline void update_tv_cache(struct thread_data *td)
+{
+ if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
+ fio_gettime(&td->tv_cache, NULL);
+}
+
/*
* The main verify engine. Runs over the writes we previously submitted,
* reads the blocks back in, and checks the crc/md5 of the data.
* read from disk.
*/
for_each_file(td, f, i) {
- if (!(f->flags & FIO_FILE_OPEN))
+ if (!fio_file_open(f))
continue;
if (fio_io_sync(td, f))
break;
if (!io_u)
break;
- if (runtime_exceeded(td, &io_u->start_time)) {
+ update_tv_cache(td);
+
+ if (runtime_exceeded(td, &td->tv_cache)) {
put_io_u(td, io_u);
td->terminate = 1;
break;
*/
static void do_io(struct thread_data *td)
{
- struct timeval s;
unsigned long usec;
unsigned int i;
int ret = 0;
if (!io_u)
break;
- memcpy(&s, &io_u->start_time, sizeof(s));
+ update_tv_cache(td);
- if (runtime_exceeded(td, &s)) {
+ if (runtime_exceeded(td, &td->tv_cache)) {
put_io_u(td, io_u);
td->terminate = 1;
break;
requeue_io_u(td, &io_u);
} else {
sync_done:
- fio_gettime(&comp_time, NULL);
+ if (should_check_rate(td))
+ fio_gettime(&comp_time, NULL);
+
bytes_done = io_u_sync_complete(td, io_u);
if (bytes_done < 0)
ret = bytes_done;
if (full && !min_evts)
min_evts = 1;
- fio_gettime(&comp_time, NULL);
+ if (should_check_rate(td))
+ fio_gettime(&comp_time, NULL);
do {
ret = io_u_queued_complete(td, min_evts);
* of completions except the very first one which may look
* a little bursty
*/
- if (!in_ramp_time(td)) {
- usec = utime_since(&s, &comp_time);
+ if (!in_ramp_time(td) && should_check_rate(td)) {
+ usec = utime_since(&td->tv_cache, &comp_time);
rate_throttle(td, usec, bytes_done);
int left;
if (td->o.thinktime_spin)
- __usec_sleep(td->o.thinktime_spin);
+ usec_spin(td->o.thinktime_spin);
left = td->o.thinktime - td->o.thinktime_spin;
if (left)
td_set_runstate(td, TD_FSYNCING);
for_each_file(td, f, i) {
- if (!(f->flags & FIO_FILE_OPEN))
+ if (!fio_file_open(f))
continue;
fio_io_sync(td, f);
}
{
struct io_u *io_u;
unsigned int max_bs;
- int i, max_units;
+ int cl_align, i, max_units;
char *p;
max_units = td->o.iodepth;
else
p = td->orig_buffer;
+ cl_align = os_cache_line_size();
+
for (i = 0; i < max_units; i++) {
+ void *ptr;
+
if (td->terminate)
return 1;
- io_u = malloc(sizeof(*io_u));
+
+ if (posix_memalign(&ptr, cl_align, sizeof(*io_u))) {
+ log_err("fio: posix_memalign=%s\n", strerror(errno));
+ break;
+ }
+
+ io_u = ptr;
memset(io_u, 0, sizeof(*io_u));
INIT_FLIST_HEAD(&io_u->list);
*/
if (td->o.time_based || td->o.loops)
td->nr_done_files = 0;
+
+ /*
+ * Set the same seed to get repeatable runs
+ */
+ td_fill_rand_seeds(td);
}
void reset_all_stats(struct thread_data *td)
memcpy(&td->start, &tv, sizeof(tv));
}
-static int clear_io_state(struct thread_data *td)
+static void clear_io_state(struct thread_data *td)
{
struct fio_file *f;
unsigned int i;
- int ret;
reset_io_counters(td);
close_files(td);
+ for_each_file(td, f, i)
+ fio_file_clear_done(f);
+}
- ret = 0;
- for_each_file(td, f, i) {
- f->flags &= ~FIO_FILE_DONE;
- ret = td_io_open_file(td, f);
- if (ret)
- break;
- }
+static int exec_string(const char *string)
+{
+ int ret, newlen = strlen(string) + 1 + 8;
+ char *str;
+
+ str = malloc(newlen);
+ sprintf(str, "sh -c %s", string);
+ ret = system(str);
+ if (ret == -1)
+ log_err("fio: exec of cmd <%s> failed\n", str);
+
+ free(str);
return ret;
}
td->io_hist_tree = RB_ROOT;
td_set_runstate(td, TD_INITIALIZED);
+ dprint(FD_MUTEX, "up startup_mutex\n");
fio_mutex_up(startup_mutex);
+ dprint(FD_MUTEX, "wait on td->mutex\n");
fio_mutex_down(td->mutex);
+ dprint(FD_MUTEX, "done waiting on td->mutex\n");
/*
* the ->mutex mutex is now no longer used, close it to avoid
goto err;
}
+ /*
+ * If we have a gettimeofday() thread, make sure we exclude that
+ * thread from this job
+ */
+ if (td->o.gtod_cpu) {
+ fio_cpu_clear(&td->o.cpumask, td->o.gtod_cpu);
+ if (fio_setaffinity(td) == -1) {
+ td_verror(td, errno, "cpu_set_affinity");
+ goto err;
+ }
+ }
+
if (td->ioprio_set) {
if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) {
td_verror(td, errno, "ioprio_set");
if (td_io_init(td))
goto err;
- if (open_files(td))
- goto err;
-
if (init_random_map(td))
goto err;
if (td->o.exec_prerun) {
- if (system(td->o.exec_prerun) < 0)
+ if (exec_string(td->o.exec_prerun))
+ goto err;
+ }
+
+ if (td->o.pre_read) {
+ if (pre_read_files(td) < 0)
goto err;
}
while (keep_running(td)) {
fio_gettime(&td->start, NULL);
memcpy(&td->ts.stat_sample_time, &td->start, sizeof(td->start));
+ memcpy(&td->tv_cache, &td->start, sizeof(td->start));
if (td->o.ratemin)
memcpy(&td->lastrate, &td->ts.stat_sample_time,
sizeof(td->lastrate));
- if (clear_state && clear_io_state(td))
- break;
+ if (clear_state)
+ clear_io_state(td);
prune_io_piece_log(td);
(td->io_ops->flags & FIO_UNIDIR))
continue;
- if (clear_io_state(td))
- break;
+ clear_io_state(td);
fio_gettime(&td->start, NULL);
td->ts.io_bytes[0] = td->io_bytes[0];
td->ts.io_bytes[1] = td->io_bytes[1];
- if (td->ts.bw_log)
- finish_log(td, td->ts.bw_log, "bw");
- if (td->ts.slat_log)
- finish_log(td, td->ts.slat_log, "slat");
- if (td->ts.clat_log)
- finish_log(td, td->ts.clat_log, "clat");
- if (td->o.exec_postrun) {
- if (system(td->o.exec_postrun) < 0)
- log_err("fio: postrun %s failed\n", td->o.exec_postrun);
+ fio_mutex_down(writeout_mutex);
+ if (td->ts.bw_log) {
+ if (td->o.bw_log_file) {
+ finish_log_named(td, td->ts.bw_log,
+ td->o.bw_log_file, "bw");
+ } else
+ finish_log(td, td->ts.bw_log, "bw");
}
+ if (td->ts.slat_log) {
+ if (td->o.lat_log_file) {
+ finish_log_named(td, td->ts.slat_log,
+ td->o.lat_log_file, "slat");
+ } else
+ finish_log(td, td->ts.slat_log, "slat");
+ }
+ if (td->ts.clat_log) {
+ if (td->o.lat_log_file) {
+ finish_log_named(td, td->ts.clat_log,
+ td->o.lat_log_file, "clat");
+ } else
+ finish_log(td, td->ts.clat_log, "clat");
+ }
+ fio_mutex_up(writeout_mutex);
+ if (td->o.exec_postrun)
+ exec_string(td->o.exec_postrun);
if (exitall_on_terminate)
terminate_threads(td->groupid);
close_ioengine(td);
cleanup_io_u(td);
+ if (td->o.cpumask_set) {
+ int ret = fio_cpuset_exit(&td->o.cpumask);
+
+ td_verror(td, ret, "fio_cpuset_exit");
+ }
+
/*
* do this very late, it will log file closing as well
*/
terminate_threads(TERMINATE_ALL);
}
+static void *gtod_thread_main(void *data)
+{
+ fio_mutex_up(startup_mutex);
+
+ /*
+ * As long as we have jobs around, update the clock. It would be nice
+ * to have some way of NOT hammering that CPU with gettimeofday(),
+ * but I'm not sure what to use outside of a simple CPU nop to relax
+ * it - we don't want to lose precision.
+ */
+ while (threads) {
+ fio_gtod_update();
+ nop;
+ }
+
+ return NULL;
+}
+
+static int fio_start_gtod_thread(void)
+{
+ int ret;
+
+ ret = pthread_create(>od_thread, NULL, gtod_thread_main, NULL);
+ if (ret) {
+ log_err("Can't create gtod thread: %s\n", strerror(ret));
+ return 1;
+ }
+
+ ret = pthread_detach(gtod_thread);
+ if (ret) {
+ log_err("Can't detatch gtod thread: %s\n", strerror(ret));
+ return 1;
+ }
+
+ dprint(FD_MUTEX, "wait on startup_mutex\n");
+ fio_mutex_down(startup_mutex);
+ dprint(FD_MUTEX, "done waiting on startup_mutex\n");
+ return 0;
+}
+
/*
* Main function for kicking off and reaping jobs, as needed.
*/
if (fio_pin_memory())
return;
+ if (fio_gtod_offload && fio_start_gtod_thread())
+ return;
+
if (!terse_output) {
printf("Starting ");
if (nr_thread)
nr_started++;
if (td->o.use_thread) {
+ int ret;
+
dprint(FD_PROCESS, "will pthread_create\n");
- if (pthread_create(&td->thread, NULL,
- thread_main, td)) {
- perror("pthread_create");
+ ret = pthread_create(&td->thread, NULL,
+ thread_main, td);
+ if (ret) {
+ log_err("pthread_create: %s\n",
+ strerror(ret));
nr_started--;
break;
}
- if (pthread_detach(td->thread) < 0)
- perror("pthread_detach");
+ ret = pthread_detach(td->thread);
+ if (ret)
+ log_err("pthread_detach: %s",
+ strerror(ret));
} else {
pid_t pid;
dprint(FD_PROCESS, "will fork\n");
} else if (i == fio_debug_jobno)
*fio_debug_jobp = pid;
}
+ dprint(FD_MUTEX, "wait on startup_mutex\n");
fio_mutex_down(startup_mutex);
+ dprint(FD_MUTEX, "done waiting on startup_mutex\n");
}
/*
}
startup_mutex = fio_mutex_init(0);
+ writeout_mutex = fio_mutex_init(1);
set_genesis_time();
}
fio_mutex_remove(startup_mutex);
+ fio_mutex_remove(writeout_mutex);
return exit_value;
}
projects / fio.git / blobdiff