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    SubjectRe: 2.6.12-rc6-mm1


    --Con Kolivas <kernel@kolivas.org> wrote (on Saturday, June 11, 2005 15:22:30 +1000):

    > On Sat, 11 Jun 2005 14:14, Martin J. Bligh wrote:
    >> --"Martin J. Bligh" <mbligh@mbligh.org> wrote (on Friday, June 10, 2005 > >
    > OK, I backed out those 4, and the degredation mostly went away.
    >> > See
    >> > http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/perf/kernbench.
    >> > moe.png
    >> >
    >> > and more specifically, see the +p5150 near the right hand side.
    >> > I don't think it's quite as good as mainline, but much closer.
    >> > I did this run with HZ=1000, and the the one with no scheduler
    >> > patches at all with HZ=250, so I'll try to do a run that's more
    >> > directly comparable as well
    >>
    >> OK, that makes it look much more like mainline. Looks like you were still
    >> revising the details of your patch Con ... once you're ready, drop me a
    >> URL for it, and I'll make the system whack on that too.
    >
    > Great thanks. Here are rolled up all the reconsidered changes that apply
    > directly to 2.6.12-rc6-mm1 -purely for testing purposes-. I'd be very
    > grateful to see how this performed; it has been boot and stress tested at
    > this end. If it shows detriment I'll have to make the smp nice changes more
    > complex.

    It's much better ... but still a degredation - see point p5181 on:

    http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/perf/kernbench.moe.png

    Only really seems to hurt the NUMA box (the x440 one ... elm3b67 ... is
    still trying to find it's ass with both hands). I'm not necessarily saying
    it's a problem ... not sure what the benefits of the patch are, but it's a
    data point, at least ?

    M.

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