Allow percentage setting for size=

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index ee899b8fdb6c402814086dde41f986d152c456c9..ce1bd9e6131db987ea6c8992c5deeebd9bddc3bf 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -382,7 +382,10 @@ size=int   The total size of file io for this job. Fio will run until
                fio will divide this size between the available files
                specified by the job. If not set, fio will use the full
                size of the given files or devices. If the the files
-               do not exist, size must be given.
+               do not exist, size must be given. It is also possible to
+               give size as a percentage between 1 and 100. If size=20%
+               is given, fio will use 20% of the full size of the given
+               files or devices.
 
 filesize=int   Individual file sizes. May be a range, in which case fio
                will select sizes for files at random within the given range