On Wed, 2005-10-12 at 14:25 -0400, Lee Revell wrote:
> On Wed, 2005-10-12 at 11:00 -0700, Mark Knecht wrote:
> > On 10/12/05, Lee Revell <[email protected]> wrote:
> > > Sounds like an application bug (some JACK client doing something not RT
> > > safe). Can you reproduce the xruns if you just run jackd with no
> > > clients?
> >
> > I don't know. These xruns take hours to generate. I'd probably have to
> > dedicate a whole day of doing nothing on the machine to try, and then
> > if I didn't produce anything I'm not sure what it proves. If I do get
> > one then we get to see if there's data.
>
> A much easier solution is to recompile JACK with the
> --enable-preemption-check option. This activates the in-kernel
> debugging mechanism that causes a stack dump when an RT task schedules.
> It has been used to find tricky bugs in Hydrogen and Freqtweak already.
I should also remind you that if you pursue the
--enable-preemption-check option, then we'll be well outside of kernel
land so you might want to take it up on the JACK list.
Lee
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