X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=HOWTO;h=06408e40e16a91fadeea2dce399efc444845b6e5;hp=de4b0a9932b43f207260a569a5e33349efebc63b;hb=5af1c6f3b46b40ef6b7021a34fd38889226e137f;hpb=c6441dc9e95cba2a31dec63272917fdf496c75c4

diff --git a/HOWTO b/HOWTO
index de4b0a99..06408e40 100644
--- a/HOWTO
+++ b/HOWTO
@@ -253,6 +253,14 @@ bs_unaligned	If this option is given, any byte size value within bsrange
 
 nrfiles=int	Number of files to use for this job. Defaults to 1.
 
+file_service_type=str  Defines how fio decides which file from a job to
+		service next. The following types are defined:
+
+			random	Just choose a file at random.
+
+			roundrobin  Round robin over open files. This
+				is the default.
+
 ioengine=str	Defines how the job issues io to the file. The following
 		types are defined:
 
@@ -289,6 +297,11 @@ ioengine=str	Defines how the job issues io to the file. The following
 				or receive, if the latter only the port
 				argument is used.
 
+			external Prefix to specify loading an external
+				IO engine object file. Append the engine
+				filename, eg ioengine=external:/tmp/foo.o
+				to load ioengine foo.o in /tmp.
+
 iodepth=int	This defines how many io units to keep in flight against
 		the file. The default is 1 for each file defined in this
 		job, can be overridden with a larger value for higher