X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;ds=sidebyside;f=HOWTO;h=5099c83c8fd7913773de58285ff323e2bdaec4d0;hb=c85c324ca4c55e482f4233c14c64ce5f88b35be3;hp=708eca0037293e80cc681c17f20d6638dc5c4cbd;hpb=9c0d224129b0c59698e4c77e7fed00dc8cbb50e1;p=fio.git

diff --git a/HOWTO b/HOWTO
index 708eca00..5099c83c 100644
--- a/HOWTO
+++ b/HOWTO
@@ -827,6 +827,19 @@ verify_fatal=bool	Normally fio will keep checking the entire contents
 		before quitting on a block verification failure. If this
 		option is set, fio will exit the job on the first observed
 		failure.
+
+verify_async=int	Fio will normally verify IO inline from the submitting
+		thread. This option takes an integer describing how many
+		async offload threads to create for IO verification instead,
+		causing fio to offload the duty of verifying IO contents
+		to one or more separate threads. If using this offload
+		option, even sync IO engines can benefit from using an
+		iodepth setting higher than 1, as it allows them to have
+		IO in flight while verifies are running.
+
+verify_async_cpus=str	Tell fio to set the given CPU affinity on the
+		async IO verification threads. See cpus_allowed for the
+		format used.
 		
 stonewall	Wait for preceeding jobs in the job file to exit, before
 		starting this one. Can be used to insert serialization