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    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U8

    * Ingo Molnar <mingo@elte.hu> wrote:

    > i tried to pole jackd a little bit (just using things like
    > jack_freewheel and jack_impulse_grabber - i dont even know what they
    > do), and got jackd into some sort of userspace loop:
    >
    > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
    > 2558 root 16 0 27900 1852 2152 S 97.8 0.8 2:36.38 jackd

    ah ... i should have guessed that "jack_freewheel y" puts jackd into ...
    freewheeling mode. So this is by design.

    i still suspect that it's some sort of userspace loop causing the jackd
    problems - just that under SCHED_OTHER you dont normally notice it,
    while with jack -R it's fatal.

    Ingo
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