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Date: Tue, 27 Mar 2001 09:54:18 -0300 (BRST)
From: Rik van Riel <riel@conectiva.com.br>
To: robert@mpe.mpg.de
cc: linux-kernel@vger.kernel.org
Subject: Re: ISSUE: very slow (factor 100) 4-way 16GByte server, with 2.4.2
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On Tue, 27 Mar 2001, Robert Suetterlin wrote:

> ISSUE: very slow (factor 100) 4-way 16GByte server, with 2.4.2

Last time we saw this issue on the list it turned out that the
machine had wrong MTRR settings and setup a significant part of
its memory non-cachable.

For a 16-way machine, 100 times speed difference is exactly what
I would expect when all memory is setup as uncachable.

regards,

Rik
--
Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

		http://www.surriel.com/
http://www.conectiva.com/	http://distro.conectiva.com.br/

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