#include <signal.h>
#include <time.h>
#include <locale.h>
+#include <assert.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/ipc.h>
return 0;
}
-static struct fio_file *get_next_file(struct thread_data *td)
-{
- unsigned int old_next_file = td->next_file;
- struct fio_file *f;
-
- do {
- f = &td->files[td->next_file];
-
- td->next_file++;
- if (td->next_file >= td->nr_files)
- td->next_file = 0;
-
- if (f->fd != -1)
- break;
-
- f = NULL;
- } while (td->next_file != old_next_file);
-
- return f;
-}
-
/*
* When job exits, we can cancel the in-flight IO if we are using async
* io. Attempt to do so.
*/
static void cleanup_pending_aio(struct thread_data *td)
{
- struct timespec ts = { .tv_sec = 0, .tv_nsec = 0};
struct list_head *entry, *n;
- struct io_completion_data icd;
struct io_u *io_u;
int r;
/*
* get immediately available events, if any
*/
- r = td_io_getevents(td, 0, td->cur_depth, &ts);
- if (r > 0) {
- icd.nr = r;
- ios_completed(td, &icd);
- }
+ r = io_u_queued_complete(td, 0, NULL);
+ if (r < 0)
+ return;
/*
* now cancel remaining active events
}
}
- if (td->cur_depth) {
- r = td_io_getevents(td, td->cur_depth, td->cur_depth, NULL);
- if (r > 0) {
- icd.nr = r;
- ios_completed(td, &icd);
- }
- }
+ if (td->cur_depth)
+ r = io_u_queued_complete(td, td->cur_depth, NULL);
}
/*
static int fio_io_sync(struct thread_data *td, struct fio_file *f)
{
struct io_u *io_u = __get_io_u(td);
- struct io_completion_data icd;
int ret;
if (!io_u)
return 1;
}
+requeue:
ret = td_io_queue(td, io_u);
- if (ret) {
+ if (ret < 0) {
td_verror(td, io_u->error);
put_io_u(td, io_u);
return 1;
- }
-
- ret = td_io_getevents(td, 1, td->cur_depth, NULL);
- if (ret < 0) {
- td_verror(td, ret);
- return 1;
- }
+ } else if (ret == FIO_Q_QUEUED) {
+ if (io_u_queued_complete(td, 1, NULL))
+ return 1;
+ } else if (ret == FIO_Q_COMPLETED) {
+ if (io_u->error) {
+ td_verror(td, io_u->error);
+ return 1;
+ }
- icd.nr = ret;
- ios_completed(td, &icd);
- if (icd.error) {
- td_verror(td, icd.error);
- return 1;
+ if (io_u_sync_complete(td, io_u, NULL) < 0)
+ return 1;
+ } else if (ret == FIO_Q_BUSY) {
+ if (td_io_commit(td))
+ return 1;
+ goto requeue;
}
return 0;
*/
static void do_verify(struct thread_data *td)
{
- struct io_u *io_u, *v_io_u = NULL;
- struct io_completion_data icd;
struct fio_file *f;
- int ret, i;
+ struct io_u *io_u;
+ int ret, i, min_events;
/*
* sync io first and invalidate cache, to make sure we really
* read from disk.
*/
for_each_file(td, f, i) {
- fio_io_sync(td, f);
- file_invalidate_cache(td, f);
+ if (fio_io_sync(td, f))
+ break;
+ if (file_invalidate_cache(td, f))
+ break;
}
- td_set_runstate(td, TD_VERIFYING);
+ if (td->error)
+ return;
- do {
- if (td->terminate)
- break;
+ td_set_runstate(td, TD_VERIFYING);
+ io_u = NULL;
+ while (!td->terminate) {
io_u = __get_io_u(td);
if (!io_u)
break;
- if (runtime_exceeded(td, &io_u->start_time)) {
- put_io_u(td, io_u);
+ if (runtime_exceeded(td, &io_u->start_time))
break;
- }
- if (get_next_verify(td, io_u)) {
- put_io_u(td, io_u);
+ if (get_next_verify(td, io_u))
break;
- }
- f = get_next_file(td);
- if (!f)
+ if (td_io_prep(td, io_u))
break;
- io_u->file = f;
+requeue:
+ ret = td_io_queue(td, io_u);
- if (td_io_prep(td, io_u)) {
- put_io_u(td, io_u);
+ switch (ret) {
+ case FIO_Q_COMPLETED:
+ if (io_u->error)
+ ret = -io_u->error;
+ if (io_u->xfer_buflen != io_u->resid && io_u->resid) {
+ int bytes = io_u->xfer_buflen - io_u->resid;
+
+ io_u->xfer_buflen = io_u->resid;
+ io_u->xfer_buf += bytes;
+ goto requeue;
+ }
+ ret = io_u_sync_complete(td, io_u, verify_io_u);
+ if (ret)
+ break;
+ continue;
+ case FIO_Q_QUEUED:
+ break;
+ case FIO_Q_BUSY:
+ requeue_io_u(td, &io_u);
+ ret = td_io_commit(td);
+ break;
+ default:
+ assert(ret < 0);
+ td_verror(td, -ret);
break;
}
- ret = td_io_queue(td, io_u);
- if (ret) {
- td_verror(td, io_u->error);
- put_io_u(td, io_u);
+ if (ret < 0 || td->error)
break;
- }
/*
- * we have one pending to verify, do that while
- * we are doing io on the next one
+ * if we can queue more, do so. but check if there are
+ * completed io_u's first.
*/
- if (do_io_u_verify(td, &v_io_u))
- break;
-
- ret = td_io_getevents(td, 1, 1, NULL);
- if (ret != 1) {
- if (ret < 0)
- td_verror(td, ret);
- break;
- }
+ min_events = 0;
+ if (queue_full(td) || ret == FIO_Q_BUSY) {
+ min_events = 1;
- v_io_u = td->io_ops->event(td, 0);
- icd.nr = 1;
- icd.error = 0;
- fio_gettime(&icd.time, NULL);
- io_completed(td, v_io_u, &icd);
-
- if (icd.error) {
- td_verror(td, icd.error);
- put_io_u(td, v_io_u);
- v_io_u = NULL;
- break;
+ if (td->cur_depth > td->iodepth_low)
+ min_events = td->cur_depth - td->iodepth_low;
}
/*
- * if we can't submit more io, we need to verify now
+ * Reap required number of io units, if any, and do the
+ * verification on them through the callback handler
*/
- if (queue_full(td) && do_io_u_verify(td, &v_io_u))
+ if (io_u_queued_complete(td, min_events, verify_io_u))
break;
+ }
- } while (1);
-
- do_io_u_verify(td, &v_io_u);
+ if (io_u)
+ put_io_u(td, io_u);
if (td->cur_depth)
cleanup_pending_aio(td);
*/
static void do_io(struct thread_data *td)
{
- struct io_completion_data icd;
struct timeval s;
unsigned long usec;
- struct fio_file *f;
int i, ret = 0;
td_set_runstate(td, TD_RUNNING);
while ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->io_size) {
- struct timespec *timeout;
+ struct timeval comp_time;
+ long bytes_done = 0;
int min_evts = 0;
struct io_u *io_u;
if (td->terminate)
break;
- f = get_next_file(td);
- if (!f)
- break;
-
- io_u = get_io_u(td, f);
+ io_u = get_io_u(td);
if (!io_u)
break;
memcpy(&s, &io_u->start_time, sizeof(s));
+
+ if (runtime_exceeded(td, &s)) {
+ put_io_u(td, io_u);
+ break;
+ }
requeue:
ret = td_io_queue(td, io_u);
- if (ret) {
- if (ret > 0 && (io_u->xfer_buflen != io_u->resid) &&
- io_u->resid) {
- /*
- * short read/write. requeue.
- */
+
+ switch (ret) {
+ case FIO_Q_COMPLETED:
+ if (io_u->error) {
+ ret = io_u->error;
+ break;
+ }
+ if (io_u->xfer_buflen != io_u->resid && io_u->resid) {
+ int bytes = io_u->xfer_buflen - io_u->resid;
+
io_u->xfer_buflen = io_u->resid;
- io_u->xfer_buf += ret;
+ io_u->xfer_buf += bytes;
goto requeue;
- } else {
- put_io_u(td, io_u);
- break;
}
+ fio_gettime(&comp_time, NULL);
+ bytes_done = io_u_sync_complete(td, io_u, NULL);
+ if (bytes_done < 0)
+ ret = bytes_done;
+ break;
+ case FIO_Q_QUEUED:
+ /*
+ * if the engine doesn't have a commit hook,
+ * the io_u is really queued. if it does have such
+ * a hook, it has to call io_u_queued() itself.
+ */
+ if (td->io_ops->commit == NULL)
+ io_u_queued(td, io_u);
+ break;
+ case FIO_Q_BUSY:
+ requeue_io_u(td, &io_u);
+ ret = td_io_commit(td);
+ break;
+ default:
+ assert(ret < 0);
+ put_io_u(td, io_u);
+ break;
}
- add_slat_sample(td, io_u->ddir, mtime_since(&io_u->start_time, &io_u->issue_time));
-
- if (td->cur_depth < td->iodepth) {
- struct timespec ts = { .tv_sec = 0, .tv_nsec = 0};
+ if (ret < 0 || td->error)
+ break;
- timeout = &ts;
+ /*
+ * See if we need to complete some commands
+ */
+ if (ret == FIO_Q_QUEUED || ret == FIO_Q_BUSY) {
min_evts = 0;
- } else {
- timeout = NULL;
- min_evts = 1;
- }
+ if (queue_full(td) || ret == FIO_Q_BUSY) {
+ min_evts = 1;
- ret = td_io_getevents(td, min_evts, td->cur_depth, timeout);
- if (ret < 0) {
- td_verror(td, ret);
- break;
- } else if (!ret)
- continue;
+ if (td->cur_depth > td->iodepth_low)
+ min_evts = td->cur_depth - td->iodepth_low;
+ }
- icd.nr = ret;
- ios_completed(td, &icd);
- if (icd.error) {
- td_verror(td, icd.error);
- break;
+ fio_gettime(&comp_time, NULL);
+ bytes_done = io_u_queued_complete(td, min_evts, NULL);
+ if (bytes_done < 0)
+ break;
}
+ if (!bytes_done)
+ continue;
+
/*
* the rate is batched for now, it should work for batches
* of completions except the very first one which may look
* a little bursty
*/
- usec = utime_since(&s, &icd.time);
+ usec = utime_since(&s, &comp_time);
- rate_throttle(td, usec, icd.bytes_done[td->ddir], td->ddir);
+ rate_throttle(td, usec, bytes_done, td->ddir);
- if (check_min_rate(td, &icd.time)) {
+ if (check_min_rate(td, &comp_time)) {
if (exitall_on_terminate)
terminate_threads(td->groupid, 0);
td_verror(td, ENODATA);
break;
}
- if (runtime_exceeded(td, &icd.time))
- break;
-
if (td->thinktime) {
unsigned long long b;
}
if (!td->error) {
+ struct fio_file *f;
+
if (td->cur_depth)
cleanup_pending_aio(td);
struct fio_file *f;
int i;
- td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0;
+ td->ts.stat_io_bytes[0] = td->ts.stat_io_bytes[1] = 0;
td->this_io_bytes[0] = td->this_io_bytes[1] = 0;
td->zone_bytes = 0;
+ td->last_was_sync = 0;
+
for_each_file(td, f, i) {
+ f->last_completed_pos = 0;
+
f->last_pos = 0;
if (td->io_ops->flags & FIO_SYNCIO)
lseek(f->fd, SEEK_SET, 0);
INIT_LIST_HEAD(&td->io_u_freelist);
INIT_LIST_HEAD(&td->io_u_busylist);
+ INIT_LIST_HEAD(&td->io_u_requeues);
INIT_LIST_HEAD(&td->io_hist_list);
INIT_LIST_HEAD(&td->io_log_list);
}
fio_gettime(&td->epoch, NULL);
- getrusage(RUSAGE_SELF, &td->ru_start);
+ getrusage(RUSAGE_SELF, &td->ts.ru_start);
runtime[0] = runtime[1] = 0;
while (td->loops--) {
fio_gettime(&td->start, NULL);
- memcpy(&td->stat_sample_time, &td->start, sizeof(td->start));
+ memcpy(&td->ts.stat_sample_time, &td->start, sizeof(td->start));
if (td->ratemin)
- memcpy(&td->lastrate, &td->stat_sample_time, sizeof(td->lastrate));
+ memcpy(&td->lastrate, &td->ts.stat_sample_time, sizeof(td->lastrate));
clear_io_state(td);
prune_io_piece_log(td);
td->runtime[0] = runtime[0] / 1000;
td->runtime[1] = runtime[1] / 1000;
- if (td->bw_log)
- finish_log(td, td->bw_log, "bw");
- if (td->slat_log)
- finish_log(td, td->slat_log, "slat");
- if (td->clat_log)
- finish_log(td, td->clat_log, "clat");
+ 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->write_iolog_file)
write_iolog_close(td);
if (td->exec_postrun) {
projects / fio.git / blobdiff