Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.29-0

[Florian Schmidt]

On Sat, 20 Nov 2004 13:35:44 -0500
Lee Revell <rlrevell@xxxxxxxxxxx> wrote:

> On Sat, 2004-11-20 at 20:14 +0100, Ingo Molnar wrote:
> > i only tried the !PREEMPT version though - does that one work for you? 
> 
> Not sure, will test.  My goal was to see if I could get the stability
> and low latency of T3 (this is low enough latency for me!) with the new
> versions.
> 
> > Also, please send me the .config that produces the failing kernel.
> 
> Sent (off-list).

Hi,

29-4 with PREEMPT works very good (jackd at 64 frames: 0 xruns (running for
1h now), soundcard irq unthreaded). Opposed to 29-1 PREEMPT_REALTIME which
showed some very weird jackd behaviour (xruns from 10usec to 50msec [!!!]).
rtc_wakeup was showing no large jitter for that kernel though, nor did the
different traces show anything that might have caused the jackd xruns. And
yes, i configured the irq handlers sanely :)

Will build 29-4 PREEMPT_REALTIME now and see how this one behaves.

flo
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