From mboxrd@z Thu Jan  1 00:00:00 1970
From: mulyadi.santosa@gmail.com (Mulyadi Santosa)
Date: Wed, 4 May 2011 12:24:13 +0700
Subject: Question on hd_geometry & blk_rq_cur_sectors
In-Reply-To: <BANLkTin_waCfjXkq4QWgrXQS=wW8kU0vMg@mail.gmail.com>
References: <BANLkTin_waCfjXkq4QWgrXQS=wW8kU0vMg@mail.gmail.com>
Message-ID: <BANLkTikTEqXdz=riksEKbWE1fUgihMzHAg@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Wed, May 4, 2011 at 10:43, Vic <vic.lix10@gmail.com> wrote:
> Also, with my current settings, if I use DD on my ramdisk I get
> "blk_rq_cur_sectors" count to be always 8, which confuses my drive b'se I
> want to only handle 512 requests at a time.
> Simple command to test the disk sing DD?"sudo dd if=/dev/urandom
> of=/dev/sbd0 bs=512 count=1"
> with bs=512 I was hoping to see only the 512 byte request

read ahead setting,  maybe?

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com