Date: Mon, 8 Jan 2007 17:09:34 -0800
From: Paul Jackson <pj@sgi.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: tytso@mit.edu, suparna@in.ibm.com, akpm@osdl.org, w@1wt.eu,
       torvalds@osdl.org, hpa@zytor.com, git@vger.kernel.org,
       nigel@nigel.suspend2.net, warthog9@kernel.org, randy.dunlap@oracle.com,
       pavel@ucw.cz, linux-kernel@vger.kernel.org, webmaster@kernel.org,
       linux-ext4@vger.kernel.org
Subject: Re: How git affects kernel.org performance
Message-Id: <20070108170934.dafc5b81.pj@sgi.com>
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Jeff wrote:
> Something I just thought of:  ATA and SCSI hard disks do their own
> read-ahead.

Probably this is wishful thinking on my part, but I would have hoped
that most of the read-ahead they did was for stuff that happened to be
on the cylinder they were reading anyway.  So long as their read-ahead
doesn't cause much extra or delayed disk head motion, what does it
matter?

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@sgi.com> 1.925.600.0401
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