Re: Realtime Preemption - 2.6.12-final-RT-V0.7.50-35

[Ingo Molnar]

* Chuck Harding <charding@xxxxxxxx> wrote:

> still having sox hang with no messages about what is going on. I have 
> CONFIG_DEBUG_PREEMPT enabled. It did work without hanging for about 50 
> times of playing a sound file, so the problem seems to take a bit of 
> time to develop. What other info would you need to figure this out?

could you chrt the sound IRQ thread to SCHED_OTHER (audio performance 
will suck, but it will be more debuggable) - when the lockup happens, do 
you see the IRQ thread looping? Do you have SOFTLOCKUP_DETECT turned on 
too?

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/