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    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm1-V0.7.28-0

    * K.R. Foley <kr@cybsft.com> wrote:

    > I know I am late reporting this but I didn't figure it out until late
    > this afternoon. I had trouble booting this one on my SMP workstation
    > at the office. It would hang after it had almost finished booting.
    > Anyway the solution was to disable tracing in /etc/rc.local and then
    > re-enable it after it has finished booting. I know this happens late
    > in the boot but it works for me.
    >
    > echo 0 > /proc/sys/kernel/trace_enabled
    > #echo 0 > /proc/sys/kernel/preempt_wakeup_timing
    > #echo 50 > /proc/sys/kernel/preempt_max_latency
    >
    > To be honest I am not sure which of the above fixes the late boot hang
    > and I didn't have time to figure it out either. This doesn't happen on
    > my SMP system here.

    there's a generic bug i'm chasing right now that seems to get worse with
    tracing enabled. The symptom of the bug is typically a system hang.

    Ingo
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