Re: [announce] [patch] Voluntary Kernel Preemption Patch

ismail dönmez
2004-07-10T14:57:29Z

jack uses realtime through realtime lsm module so it can do mlock() ,
I tried making aRts run real time too but it didn't prevent skips
either.

Cheers,
ismail

On Sun, 11 Jul 2004 00:45:05 +1000, Nick Piggin <nickpiggin@yahoo.com.au> wrote:
>
>
> Ingo Molnar wrote:
> > * ismail dönmez <ismail.donmez@gmail.com> wrote:
> >
> >
> >>>what filesystem are you using?
> >>>
> >>
> >>XFS
> >
> >
> > i've fixed latencies in ext3, i'm not sure how bad XFS is. But 2-3
> > seconds delay is almost impossible to be a true scheduling latency -
> > it's probably IO latency impacting your audio application. (it could
> > also be normal preemption latency, if those tasks are not running as
> > SCHED_FIFO - but 2-3 seconds preemption latency should not be caused by
> > a simple cp -a. This leaves IO latency.).
> >
>
> But it only skips when using aRts, which points the other way ;)
>
> If all tasks are using realtime scheduling, then this discounts
> the scheduler from the equation, however I'm not sure if this is
> the case?
>

--
Time is what you make of it