Re: [UPDATE] Severe performance problems with kernel 2.6.10

From: Alan Cox
Date: Mon Jan 17 2005 - 17:39:06 EST


On Llu, 2005-01-17 at 19:50, Gabriel Tataranu wrote:
> For those interested:
>
> The performance issues (below) where due to a strange bug in the kernel
> VM triggered by the motherboard BIOS. This affects Asus P4P800
> motherboards(-MX and -VM tested) with more that 1 GB RAM. The built-in
> VGA can use 1-32 MB RAM for display but configured with less than 16 MB
> of video RAM the board will behave EXTREMELY poor in linux (2.6.9 also
> tested to behave like this).

I'll take a guess. Can you send me the boot dmesg and /proc/mtrr of both
the slow and the normal cases. I think I know what the BIOS is doing and
I've been looking for a system doing this so I can find a
vict^H^H^Holunteer to test some ideas out.

Alan

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