From: Jens Axboe Date: Sat, 15 Mar 2014 01:41:07 +0000 (-0600) Subject: Update documentation on zero_buffers / scramble_buffers X-Git-Tag: fio-2.1.7~9 X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=7750aac43ee4e0c001860426e6fdaf22d9ddfc76 Update documentation on zero_buffers / scramble_buffers Signed-off-by: Jens Axboe --- diff --git a/HOWTO b/HOWTO index 725214fb..0f9c0fc2 100644 --- a/HOWTO +++ b/HOWTO @@ -519,6 +519,8 @@ 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 2dee56b5..20f0c093 100644 --- a/fio.1 +++ b/fio.1 @@ -430,6 +430,8 @@ blocksize setting. .TP .B zero_buffers Initialise 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