Re: test10-pre1 problems on 4-way SuperServer8050

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Wed Oct 11 2000 - 12:59:20 EDT

  • Next message: Sudhindra Herle: "RE: K7 on SD11 and 2.2.17: memory not detected"

    > On Wed, 11 Oct 2000, Alan Cox wrote:
    >
    > > > I will continue to narrow down by removing some things (like mtrr) from
    > > > the equation. Rik, the problem is that when one enables PAE (or just
    > > > highmem-4G) support on a 4-way 6G RAM machine becomes 38-40 times slower.
    > >
    > > What happens if you boot a PAE kernel with mem=512M on that box ?
    > >
    >
    > it works fine then. Kernel compiles in 68 seconds as it should. Shall I
    > keep incrementing mem= to see what happens next...

    The threshold is probably >1Gig, but see where it actually is, thats the point
    the other zones and memory juggling kicks in

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