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    Subject[CFT][PATCH *] faster cache reclaim
    [WANTED: testers]

    Hi,

    after looking at some other things for a while, I made a patch to
    get 2.4.10-ac* to correctly eat pages from the cache when it is
    about pages belonging to files which aren't currently in use. This
    should also give some of the benefits of use-once, but without the
    flaw of not putting pressure on the working set when a streaming IO
    load is going on.

    It also reduces the distance between inactive_shortage and
    inactive_plenty, so kswapd should spend much less time rolling
    over pages from zones we're not interested in.

    This patch is meant to fix the problems where heavy cache
    activity flushes out pages from the working set, while still
    allowing the cache to put some pressure on the working set.

    I've only done a few tests with this patch, reports on how
    different workloads are handled are very much welcome:

    http://www.surriel.com/patches/2.4/2.4.10-ac9-eatcache

    regards,

    Rik
    --
    DMCA, SSSCA, W3C? Who cares? http://thefreeworld.net/ (volunteers needed)

    http://www.surriel.com/ http://distro.conectiva.com/

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