Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm2-V0.7.7

[Ingo Molnar]

* Michael J. Cohen <mjc@xxxxxxx> wrote:

> > hm, have you chrt-ed the soundcard IRQ to a fifo priority higher than
> > 50?

> on my x86-64, there doesn't seem to be an irq for snd-intel8x0.
> 
> optie ~ # cat /proc/interrupts 

> 185:     286001   IO-APIC-level  libata, ehci_hcd, ohci_hcd, ohci_hcd
> 193:      37964   IO-APIC-level  AMD AMD8111

perhaps this IRQ 193 one? Stupid question: there is sound coming out of 
the speakers, right?

> ps ax doesn't seem to show anything sound-related except jackd so I
> tried chrt -f 75 jackd -R -d alsa -P -HMm -z s -o 6
> 
> result during an emerge metadata on V0.7.13:
> 
> **** alsa_pcm: xrun of at least 133.973 msecs
> **** alsa_pcm: xrun of at least 78.544 msecs
> **** alsa_pcm: xrun of at least 245.494 msecs
> 
> *much* better but we're shooting for 0 xruns, no?

yeah, we are.

	Ingo
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