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    SubjectRe: [announce] [patch] ultra-scalable O(1) SMP and UP scheduler
    On Fri, 4 Jan 2002, Ingo Molnar wrote:

    > On Fri, 4 Jan 2002, David Lang wrote:
    >
    > > Ingo,
    > > back in the 2.4.4-2.4.5 days when we experimented with the
    > > child-runs-first scheduling patch we ran into quite a few programs that
    > > died or locked up due to this. (I had a couple myself and heard of others)
    >
    > hm, Andrea said that the only serious issue was in the sysvinit code,
    > which should be fixed in any recent distro. Andrea?
    >

    I remember running into problems with some user apps (not lockups, but the
    apps failed) on my 2x400MHz pentium box. I specificly remember the Citrix
    client hanging, but I think there were others as well.

    I'll try and get a chance to try your patch in the next couple days.

    David Lang


    > > try switching this back to the current behaviour and
    see if the > > lockups still happen.
    >
    > there must be some other bug as well, the child-runs-first scheduling can
    > cause lockups, but it shouldnt cause oopes.
    >
    > Ingo
    >
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