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

[Ingo Molnar]

* Ingo Molnar <mingo@xxxxxxx> 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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