X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=README;h=01cc19e9d69cf752ced1bb40b3709d5e2d78d121;hp=04ff1eef18a36867e133f1c0a948936e3cc26e34;hb=9b031dc82192e884c1d6da9c86f047ecb9ef5c3a;hpb=b46928282e0a890f49250e79b81af773a2b7108f

diff --git a/README b/README
index 04ff1eef..01cc19e9 100644
--- a/README
+++ b/README
@@ -90,7 +90,9 @@ The job file parameters are:
 			mmap for mmap'ed io, splice for using splice/vmsplice,
 			or sgio for direct SG_IO io. The latter only works on
 			Linux on SCSI (or SCSI-like devices, such as
-			usb-storage or sata/libata driven) devices.
+			usb-storage or sata/libata driven) devices. Fio also
+			has a null io engine, which is mainly used for testing
+			fio itself.
 	iodepth=x	For async io, allow 'x' ios in flight
 	overwrite=x	If 'x', layout a write file first.
 	nrfiles=x	Spread io load over 'x' number of files per job,