[linux-audio-user] Pulling off old 2-track reels and trying to slow them down

[Wolfgang Woehl]

Alan Taylor <alan-linuxaudiouser at lowb.org>:
> On Sun, 2005-04-24 at 22:51 +0200, Wolfgang Woehl wrote:
> > irq 10 would be a good choice. Usually it's the first available
> > high priority interrupt.
>
> I tried all 4 empty slots in my PC and was only able to get IRQ5 or
> IRQ11.  IRQ5 is where I was before... sharing with the video card,
> the gigabit ethernet controller, and the USB v2 controller.
>
> Now I'm in IRQ11, sharing only with the USB v1.1 controller.  Instead
> of 300 XRUNs per second at 96KHz, I get only one.  Also, instead of
> 50 XRUNs per second at 88.2KHz, I get only one every 30 seconds.
>
> So, there's marked improvement, but still not good enough to pull off
> a whole reel of music.  I don't know why IRQ10 seems to be left
> unused altogether.  I figured my PC would have assigned an empty IRQ
> before making my soundcard share an already used IRQ.  Time for more
> research.

Alan, if you have APIC on your board you could shuffle things around in 
the BIOS. (I'm not sure, I think on APIC boards the irq 10 rule does 
not apply.)

Wolfgang