X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=HOWTO;h=1c89d75f29cf6a01264d9f6dbbaaefc9b529a9e8;hp=f74360dee4becc4298bf7e7b8685a284550e552d;hb=9195552e8fca86b682a86fc7ab0fb6eacb433f16;hpb=12d02717a293cdd0c85504c958f7bf57411bb30b

diff --git a/HOWTO b/HOWTO
index f74360de..1c89d75f 100644
--- a/HOWTO
+++ b/HOWTO
@@ -430,6 +430,14 @@ size=int	The total size of file io for this job. Fio will run until
 		is given, fio will use 20% of the full size of the given
 		files or devices.
 
+io_limit=int	Normally fio operates within the region set by 'size', which
+		means that the 'size' option sets both the region and size of
+		IO to be performed. Sometimes that is not what you want. With
+		this option, it is possible to define just the amount of IO
+		that fio should do. For instance, if 'size' is set to 20G and
+		'io_limit' is set to 5G, fio will perform IO within the first
+		20G but exit when 5G have been done.
+
 filesize=int	Individual file sizes. May be a range, in which case fio
 		will select sizes for files at random within the given range
 		and limited to 'size' in total (if that is given). If not