X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=init.c;h=5630c9fb3e821708b6bb8552cd5a3111834c82fb;hp=6dc221ea4eb31ff95e8796d50aeaf4199845a429;hb=e916b390684ec1ca6247f98138fa9c1682701d29;hpb=079ad09b1ef22fa0d47c2cd2673908c5619aa41a

diff --git a/init.c b/init.c
index 6dc221ea..5630c9fb 100644
--- a/init.c
+++ b/init.c
@@ -90,6 +90,12 @@ static struct fio_option options[] = {
 		.help	= "Amount of IO buffers to keep in flight",
 		.def	= "1",
 	},
+	{
+		.name	= "iodepth_low",
+		.type	= FIO_OPT_INT,
+		.off1	= td_var_offset(iodepth_low),
+		.help	= "Low water mark for queuing depth",
+	},
 	{
 		.name	= "size",
 		.type	= FIO_OPT_STR_VAL,
@@ -644,6 +650,14 @@ static void fixup_options(struct thread_data *td)
 	 */
 	if (td->thinktime_spin > td->thinktime)
 		td->thinktime_spin = td->thinktime;
+
+	/*
+	 * The low water mark cannot be bigger than the iodepth
+	 */
+	if (td->iodepth_low > td->iodepth || !td->iodepth_low)
+		td->iodepth_low = td->iodepth;
+
+	printf("io depth %d/%d\n", td->iodepth_low, td->iodepth);
 }
 
 /*