Re: 2.6.14-rc4-rt1

[Lee Revell]

On Wed, 2005-10-12 at 11:00 -0700, Mark Knecht wrote:
> On 10/12/05, Lee Revell <rlrevell@xxxxxxxxxxx> 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.

Lee

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