X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=fio.1;h=dc10b4031d9260817618033dc95218c73c96c446;hb=fd68418e1f248e85809312d6fa789eaf57b54dc0;hp=e8fb57f4ca33a2035c445d8ab31dbc5f794fbcc1;hpb=23f394d5d70902c6f1d71ac03fa1d70e13c9c0b9;p=fio.git

diff --git a/fio.1 b/fio.1
index e8fb57f4..dc10b403 100644
--- a/fio.1
+++ b/fio.1
@@ -329,6 +329,13 @@ default is to only fill it at init time and reuse that data. Only makes sense
 if zero_buffers isn't specified, naturally. If data verification is enabled,
 refill_buffers is also automatically enabled.
 .TP
+.BI scramble_buffers \fR=\fPbool
+If \fBrefill_buffers\fR is too costly and the target is using data
+deduplication, then setting this option will slightly modify the IO buffer
+contents to defeat normal de-dupe attempts. This is not enough to defeat
+more clever block compression attempts, but it will stop naive dedupe
+of blocks. Default: true.
+.TP
 .BI nrfiles \fR=\fPint
 Number of files to use for this job.  Default: 1.
 .TP