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Date: Fri, 24 May 2002 09:31:56 -0700
From: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
cc: Roy Sigurd Karlsbakk <roy@karlsbakk.net>, linux-kernel@vger.kernel.org
Subject: Re: [BUG] 2.4 VM sucks. Again
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>> I'm not sure exactly what Roy was doing, but we were taking a machine
>> with 16Gb of RAM, and reading files into the page cache - I think we built up
>> 8 million buffer_heads according to slabinfo ... on a P4 they're 128 bytes each,
>> on a P3 96 bytes.
> 
> The buffer heads one would make sense. I only test on realistic sized systems. 

Well, it'll still waste valuable memory there too, though you may not totally kill it.

> Once you pass 4Gb there are so many problems its not worth using x86 in the
> long run

Nah, we just haven't fixed them yet ;-)

M.