Subject: Re: I/O issues, iowait problems, 2.4 v 2.6
From: Paul Venezia <pvenezia@jpj.net>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <20031110205443.6422259f.akpm@osdl.org>
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On Mon, 2003-11-10 at 23:54, Andrew Morton wrote:

> But.  If the workload here was a simple dd of /dev/zero onto a regular
> file then why on earth is the pagecache size not rising? 

2.6.0-test8 on a box with an AIC7899 performs exactly as expected. I'll
pull the mirror from the MPT and see what I get. 

The box with the aic7xxx is a 1P 1Ghz. I'll compile test9-bk11 on that
one just to be sure, but it looks like it may be a driver issue. I can
replicate this on another box with a 53C1030 running a mirror, so I
don't think it's specific hardware.

-Paul 

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