Re: Linux 2.4.4 folks

From: Mike Galbraith (mikeg@wen-online.de)
Date: Sat May 19 2001 - 04:05:29 EDT

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    Hi,

    On Sat, 19 May 2001, Peter Zaitsev wrote:

    > Hello linux-kernel,
    >
    > I've trying to move some of my servers to 2.4.4 kernel from 2.2.x.
    > Everything goes fine, notable perfomance increase occures, but the
    > problem is I'm really often touch the following problem:

    <allocation failures snipped>

    > The problem is the systems this happens on are not short of memory.
    > Here is the free output for the system I had this happened this
    > morning:

    free doesn't show any info about allocator state at allocation failure
    time. If you were to modify mm/page_alloc.c:__alloc_pages() to do a
    show_mem() along with the printk, you'd likely see that you're close
    to being completely oom at that moment.

    > Does anyone has any ideas about this problem ?

    Posting /proc/slabinfo content might give the vm wizards an idea where
    your memory is sitting.

    If you see any indications of a sustained leak, I can provide you with
    a 2.4.4 ikd patch (toolkit.. contains a memory leak detector) to try on
    a non-mission-critical box. It's large, 731003 uncompressed.

            -Mike

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