X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=fio.c;h=1c2748e06ee4483b0cdef5457757985140a133a6;hp=6e78949b52fd7771b94d31bc0b14c0575e18c84c;hb=e916b390684ec1ca6247f98138fa9c1682701d29;hpb=9978463287982c2f73f171ec9a79979939dee47a

diff --git a/fio.c b/fio.c
index 6e78949b..1c2748e0 100644
--- a/fio.c
+++ b/fio.c
@@ -136,27 +136,6 @@ static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
 	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.
@@ -209,6 +188,7 @@ static int fio_io_sync(struct thread_data *td, struct fio_file *f)
 		return 1;
 	}
 
+requeue:
 	ret = td_io_queue(td, io_u);
 	if (ret < 0) {
 		td_verror(td, io_u->error);
@@ -224,6 +204,10 @@ static int fio_io_sync(struct thread_data *td, struct fio_file *f)
 		}
 
 		io_u_sync_complete(td, io_u, NULL);
+	} else if (ret == FIO_Q_BUSY) {
+		if (td_io_commit(td))
+			return 1;
+		goto requeue;
 	}
 
 	return 0;
@@ -285,6 +269,10 @@ requeue:
 			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);
@@ -299,9 +287,13 @@ requeue:
 		 * completed io_u's first.
 		 */
 		min_events = 0;
-		if (queue_full(td))
+		if (queue_full(td) || ret == FIO_Q_BUSY) {
 			min_events = 1;
 
+			if (td->cur_depth > td->iodepth_low)
+				min_events = td->cur_depth - td->iodepth_low;
+		}
+
 		/*
 		 * Reap required number of io units, if any, and do the
 		 * verification on them through the callback handler
@@ -352,7 +344,6 @@ static void do_io(struct thread_data *td)
 {
 	struct timeval s;
 	unsigned long usec;
-	struct fio_file *f;
 	int i, ret = 0;
 
 	td_set_runstate(td, TD_RUNNING);
@@ -366,11 +357,7 @@ static void do_io(struct thread_data *td)
 		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;
 
@@ -402,6 +389,17 @@ requeue:
 				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);
@@ -412,16 +410,18 @@ requeue:
 		if (ret < 0 || td->error)
 			break;
 
-		add_slat_sample(td, io_u->ddir, mtime_since(&io_u->start_time, &io_u->issue_time));
-
 		/*
 		 * See if we need to complete some commands
 		 */
-		if (ret == FIO_Q_QUEUED) {
+		if (ret == FIO_Q_QUEUED || ret == FIO_Q_BUSY) {
 			min_evts = 0;
-			if (queue_full(td))
+			if (queue_full(td) || ret == FIO_Q_BUSY) {
 				min_evts = 1;
 
+				if (td->cur_depth > td->iodepth_low)
+					min_evts = td->cur_depth - td->iodepth_low;
+			}
+
 			fio_gettime(&comp_time, NULL);
 			bytes_done = io_u_queued_complete(td, min_evts, NULL);
 			if (bytes_done < 0)
@@ -465,6 +465,8 @@ requeue:
 	}
 
 	if (!td->error) {
+		struct fio_file *f;
+
 		if (td->cur_depth)
 			cleanup_pending_aio(td);
 
@@ -603,11 +605,15 @@ static void clear_io_state(struct thread_data *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);
@@ -633,6 +639,7 @@ static void *thread_main(void *data)
 
 	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);
 
@@ -687,15 +694,15 @@ static void *thread_main(void *data)
 	}
 
 	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);
@@ -731,12 +738,12 @@ static void *thread_main(void *data)
 	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) {