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    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4

    * Florian Schmidt <mista.tapas@gmx.net> wrote:

    > Here's some setup info:
    >
    > ksoftirqd/0:
    > mango:~# chrt -p 2
    > pid 2's current scheduling policy: SCHED_FIFO
    > pid 2's current scheduling priority: 99

    dont do this ... ksoftirqd can spend alot of time processing various
    stuff and it should not be relevant to the audio path. It should be
    SCHED_OTHER.

    > Hmm, it seems i haven't disabled all debugging. This is from dmesg:
    >
    > BUG: atomic counter underflow at:
    > [<c010649e>] dump_stack+0x1e/0x20 (20)
    > [<c025f319>] qdisc_destroy+0xd9/0xe0 (28)

    this is automatic and doesnt introduce alot of overhead (unless the
    printout happens while you are testing latencies). You can remove the
    WARN_ON from include/asm-i386/atomic.h.

    Ingo
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