Update documentation for zero_buffers

If it is explicitly enabled, then we don't scramble the buffers as
well, unless the user has asked for that by setting
scramble_buffers=1.

Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/HOWTO b/HOWTO
index 0f7909daef68c32e0e4cee1546d4b93a479a3e0a..f43f3ec34748e369350f00e9ea2b2b17250c1cd6 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -578,8 +578,6 @@ bs_is_seq_rand      If this option is set, fio will use the normal read,write
 
 zero_buffers   If this option is given, fio will init the IO buffers to
                all zeroes. The default is to fill them with random data.
-               The resulting IO buffers will not be completely zeroed,
-               unless scramble_buffers is also turned off.
 
 refill_buffers If this option is given, fio will refill the IO buffers
                on every submit. The default is to only fill it at init

diff --git a/fio.1 b/fio.1
index 84d71a04a09d2ee2eb868a5fd3924666e55f2b02..3859753ded17edd6bb6c676ccd5915ce6606e334 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -462,8 +462,6 @@ blocksize setting.
 .TP
 .B zero_buffers
 Initialize buffers with all zeros. Default: fill buffers with random data.
-The resulting IO buffers will not be completely zeroed, unless
-\fPscramble_buffers\fR is also turned off.
 .TP
 .B refill_buffers
 If this option is given, fio will refill the IO buffers on every submit. The