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    SubjectRe: 2.6.21-rc2-mm1
    On Mon, 5 Mar 2007 23:20:58 +0100
    "J.A. Magall__n" <jamagallon@ono.com> wrote:

    > On Fri, 2 Mar 2007 03:00:26 -0800, Andrew Morton <akpm@linux-foundation.org> wrote:
    >
    > >
    > > Temporarily at
    > >
    > > http://userweb.kernel.org/~akpm/2.6.21-rc2-mm1/
    > >
    > > Will appear later at
    > >
    > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc2/2.6.21-rc2-mm1/
    > >
    > >
    >
    > I'm also noticing very bad behaviour wrt scheduling, I think. When I launch my
    > parallel cpu burning code, the system _really_ stalls, the mouse in X11 is not
    > jerky, it is _stuck_ for a couple or three seconds...
    >
    > The only diffrecence is that, trying to solve nVidia driver problems, I disabled
    > BKL preemption:
    >
    > werewolf:/usr/src/linux# grep PREEMPT .config
    > # CONFIG_PREEMPT_RCU is not set
    > # CONFIG_PREEMPT_NONE is not set
    > # CONFIG_PREEMPT_VOLUNTARY is not set
    > CONFIG_PREEMPT=y
    > # CONFIG_PREEMPT_BKL is not set

    Do you think that is a problem which is introduced by -rc1-mm1?

    It'd be good if you can capture the `top' output while this is happening -
    it could be the longstanding problem where an app's sleep/run pattern
    permits it to get a lot of dynamic priority boosting, even though it is
    CPU-intensive.

    -
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