Only memcpy last issue time when using iolog replay
Part of a series that'll allow switching off various time measurements
to avoid impacting system performance too much.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/ioengines.c b/ioengines.c
index e447539..1688c63 100644
--- a/ioengines.c
+++ b/ioengines.c
@@ -227,7 +227,12 @@
if (td->io_ops->flags & FIO_SYNCIO) {
fio_gettime(&io_u->issue_time, NULL);
- memcpy(&td->last_issue, &io_u->issue_time,
+
+ /*
+ * only used for iolog
+ */
+ if (td->o.read_iolog_file)
+ memcpy(&td->last_issue, &io_u->issue_time,
sizeof(struct timeval));
/*
@@ -272,8 +277,13 @@
if ((td->io_ops->flags & FIO_SYNCIO) == 0) {
fio_gettime(&io_u->issue_time, NULL);
- memcpy(&td->last_issue, &io_u->issue_time,
- sizeof(struct timeval));
+
+ /*
+ * only used for iolog
+ */
+ if (td->o.read_iolog_file)
+ memcpy(&td->last_issue, &io_u->issue_time,
+ sizeof(struct timeval));
/*
* async engine, set the timeout here