Messages in this thread | | | Subject | Re: [patch] voluntary-preempt-2.6.8-rc3-O5 | From | Lee Revell <> | Date | Thu, 12 Aug 2004 21:12:01 -0400 |
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On Thu, 2004-08-12 at 21:18, Florian Schmidt wrote: > On Thu, 12 Aug 2004 20:55:30 -0400 > Lee Revell <rlrevell@joe-job.com> wrote: > > > Even if it is not a long non-preemptible section, mlockall-test is > > still doing *something* that causes an xrun in jackd. Maybe > > interrupts are being disabled for a long time. Whatever it is, it > > cannot possibly be a jackd bug, because mlockall by an unrelated, > > normal-priority process causes an xrun in the SCHED_FIFO jackd > > process. > > Hmm, yes, that makes sense. I wonder: does mlockall have any influence > on IPC? >
Good question. I did repeat your test (disabling xrun_debug) and I can confirm that I no longer get a preempt timing violation, but mlockall-test still triggers xruns in jackd every time. So there is something else going on here.
Lee
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