Document 'openfiles' option
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/HOWTO b/HOWTO
index ea943ee..d1a3ad1 100644
--- a/HOWTO
+++ b/HOWTO
@@ -253,6 +253,10 @@
nrfiles=int Number of files to use for this job. Defaults to 1.
+openfiles=int Number of files to keep open at the same time. Defaults to
+ the same as nrfiles, can be set smaller to limit the number
+ simultaneous opens.
+
file_service_type=str Defines how fio decides which file from a job to
service next. The following types are defined: