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    SubjectRe: [PATCH] Patch to Memory Subsystem ... (Needed?)
    Horst von Brand wrote:
    >
    > Brian Schau <bsc@fleggaard.dk> said:
    > > Hard to say. But with ram being cheap these days, who can't afford a
    > > spare 1Mb?
    > > (Which i think should be sufficient?)
    >
    > If I pay for RAM, I want to use it...


    Ofcourse you do. That's why you buy it!

    But why do people (in general) run raid-1 on their harddisks? To be
    protected against disk failure.

    Why do I want to reserve some pages for root? So that if all memory
    seems to be exhausted, root still have the opportunity to login,
    evaluate and eventually find a solution to the problem. Instead of
    doing a hard reboot as I was forced to do (which meant that I put 14
    people on hold for 15-20 minutes while the server was fighting it's way
    back to life. Fortunately we didn't loose any data ...)



    > --
    > Dr. Horst H. von Brand mailto:vonbrand@inf.utfsm.cl
    > Departamento de Informatica Fono: +56 32 654431
    > Universidad Tecnica Federico Santa Maria +56 32 654239
    > Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513

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