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    SubjectRe: 2.6.0-test8/test9 io scheduler needs tuning?
    On Tue, 28 Oct 2003 10:50:04 +1100
    Nick Piggin <piggin@cyberone.com.au> wrote:

    >
    >
    > cliff white wrote:
    >
    > >On Tue, 28 Oct 2003 05:52:45 +0800
    > >Michael Frank <mhf@linuxmail.org> wrote:
    > >
    > >
    > >>To my surprise 2.6 - which used to do better then 2.4 - does no longer
    > >>handle these test that well.

    > >STP id Kernel Name MaxJPM Change Options
    > >281669 linux-2.6.0-test8 7014.42 0.0
    > >281671 linux-2.6.0-test8 8294.94 +18.26% elevator=deadline
    > >
    > >The -mm kernels don't show this big delta. We also do not see this delta on
    > >smaller machines
    > >
    >
    > I'm working with Randy to fix this. Attached is what I have so far. See how
    > you go with it.

    So far, looks quite good. ( i know 2.4.18 is wierd for some, but they were
    hot off the stp, so i used 'em )

    4-cpu
    STP id Kernel Name MaxJPM Change Options
    282391 linux-2.4.18 5250.23 0.00
    282413 Nick's patch 5484.95 4.27 elevator=deadline
    282413 Nick's patch 5416.51 3.06

    282395 linux-2.4.18 6581.17 0.0
    282415 Nick's patch 8293.95 20.6
    282415 Nick's patch 8484.95 22.43 elevator=deadline

    And, the graph is nice and flat!
    http://khack.osdl.org/stp/282416/results/jpm.png

    Full results: http://developer.osdl.org/cliffw/reaim/index.html

    Any test detail: http://khack.osdl.org/stp/<STP id>

    cliffw

    >


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