Switch to using our internal Tausworthe based random generator for offsets

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index a8c0027b15ff3a1cac220a94bf7b750009b481af..0ced604de4f82b0fadb7345b34e61735d46a0b01 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -214,6 +214,12 @@ reasons. Allow values are 1024 or 1000, with 1024 being the default.
 Seed the random number generator in a predictable way so results are repeatable
 across runs.  Default: true.
 .TP
+.BI use_os_rand \fR=\fPbool
+Fio can either use the random generator supplied by the OS to generator random
+offsets, or it can use it's own internal generator (based on Tausworthe).
+Default is to use the internal generator, which is often of better quality and
+faster. Default: false.
+.TP
 .BI fallocate \fR=\fPbool
 By default, fio will use fallocate() to advise the system of the size of the
 file we are going to write. This can be turned off with fallocate=0. May not