[PlanetCCRMA] jackd xruns problem: solved?

[Fernando Pablo Lopez-Lezcano]

On Sat, 2004-08-14 at 12:48, Fernando Pablo Lopez-Lezcano wrote:
> On Sat, 2004-08-14 at 08:26, Steve Harris wrote:
> > On Fri, Aug 13, 2004 at 01:17:52 -0700, Fernando Pablo Lopez-Lezcano wrote:
> > > > Then I tried to compile a 2.6.8-rc4 with CK2 and.. no more xruns!
> > > > (with # jackd --realtime -Rv -d alsa -p 128 -n 3 -r 44100
> > > >  and same applications running).
> > > > 
> > > > I must admit, I didn'to do hard testing by now, but
> > > > I think it could be encouraging!
> > > 
> > > There has been a lot of progress in the last few weeks. I'm currently
> > > running 2.6.8rc4 plus Ingo Molnar's volutary scheduling O5 and it is
> > > looking very very good. The gurus are hard at work tracking hard stuff
> > > that deals with mlockall...[*]
> > 
> > How serious are the mloclall problems? Any chance of throwing an RPM or
> > kernel source over the fence?
> 
> Yes, I could do that. In fact I should have already done that.
> Apparently (if I understand things right) a mlockall on an unrelated
> process can trigger an xrun in jack. Mlockall is rare outside jack, I
> think, but it is still a fundamental problem. 

And, of course, mlockalls inside jack also are a problem...
-- Fernando