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    SubjectRe: [PATCH] OOM handling
    On Sun, 25 Mar 2001, Martin Dalecki wrote:

    > Ah... and of course I think this patch can already go directly
    > into the official kernel. The quality of code should permit
    > it. I would esp. request Rik van Riel to have a closer look
    > at it...

    - the algorithms are just as much black magic as the old ones
    - it hasn't been tested in any other workload than your Oracle
    server (at least, not that I've heard of)
    - the comments are just too rude ;)
    (though fun)
    - the AGE_FACTOR calculation will overflow after the system has
    an uptime of just _3_ days
    - your code might be good for server loads, but for normal
    users it will kill what amounts to a random process ... this
    is horribly wrong for desktop systems

    In short, I like some of your ideas, but I really fail to see why
    this version of the code would be any better than what we're having
    now. In fact, since there seem to be about 1000x more desktop boxes
    than Oracle boxes (probably even more), I'd say that the current
    algorithm in the kernel is better (since it's right for more systems).

    Now if you can make something which preserves the heuristics which
    serve us so well on desktop boxes and add something that makes it
    also work on your Oracle servers, then I'd be interested.

    Alternatively, I also wouldn't mind a completely new algorithm, as
    long as it turns out to work well on desktop boxes too. But remember
    that we cannot tell this without first testing the thing on a few
    dozen (hundreds?) of machines with different workloads...


    Virtual memory is like a game you can't win;
    However, without VM there's truly nothing to lose...

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