Re: [BUG] 2.4 VM sucks. Again

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 24 May 2002 17:14:54 +0100 (BST)


> > What sort of setup. I can't duplicate the problem here ?
>
> 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.
Once you pass 4Gb there are so many problems its not worth using x86 in the
long run

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