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    SubjectRe: [PATCH -mm 00/15] VM pageout scalability improvements (V6)
    On Mon, 28 Apr 2008 14:18:35 -0400
    Rik van Riel <riel@redhat.com> wrote:

    > This patch series improves VM scalability

    Here is some (absolutely minimal) performance data.

    Running "fillmem 16000" on my 16 GB test system puts the system about 800MB
    into swap. Both run time and CPU use are improved with this patch series.
    The numbers are an average of about a dozen runs.

    2.6.25-mm1:
    real 1m31
    user 0m11
    sys 0m32

    2.5.25-mm1-splitvm:
    real 1m02
    user 0m11
    sys 0m22

    This does not account for kswapd CPU use, which accumulated to about 56
    seconds total in the splitvm kernel, but around 5 minutes on 2.6.25-mm1.

    I will make a kernel RPM with the split LRU patch set available so other
    people can easily do performance tests.

    --
    All Rights Reversed


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