[LAU] xruns with m-audio fast track pro on fedora 8 ccrma -> kernel 2.6.22 , periods/buffer = 3 , disable system bips and esd, and proper rtirq setup

[Matthias Schönborn]

> > I'm running the Fast Track Pro with 64 Frames and 2 Periods (2,9msec),
> > and if I just use Ardour, I rarely get xruns. I'm running Kubuntu Gutsy,
> > so if I can provide any information on my configuration, go ahead and ask
> > :-)
> >
> > Matthias
>
> I tried ubuntu studio yesterday and i must admit that it worked better
> than the last fedora.
> Actually with fedora 6 on my older laptop and the same card i had almost
> no xruns with 2 periods and 64 frames.
>
>
> Which kernel are you using ? Did you tweak the irq priorities ?
>
> Flo

I didn't tweak the irq properties and I'm using the latest realtime-kernel 
(linux-rt in the repositories), though the ati drivers still don't work with 
it - I'd have never bought an ati if I had known that I would only be using 
linux... Here's my output of cat /proc/interrupts:

           CPU0
  0:     956843  	 IO-APIC-edge      timer
  1:       8431   		IO-APIC-edge      i8042
  8:         50   		IO-APIC-edge      rtc
  9:       7370   		IO-APIC-fasteoi   acpi
 12:        658   		IO-APIC-edge      i8042
 14:     136491   	IO-APIC-edge      libata
 15:          0   		IO-APIC-edge      libata
 16:          1   		IO-APIC-fasteoi   uhci_hcd:usb4, yenta, fglrx
 17:      84487   	IO-APIC-fasteoi   ohci1394, Intel ICH6
 18:          1   		IO-APIC-fasteoi   ipw2200
 19:      96932   	IO-APIC-fasteoi   uhci_hcd:usb1, ehci_hcd:usb5
 20:         64   		IO-APIC-fasteoi   uhci_hcd:usb2
 21:          0   		IO-APIC-fasteoi   uhci_hcd:usb3, sdhci:slot0
 22:      83932   	IO-APIC-fasteoi   eth0
NMI:          0
LOC:     323689
ERR:          0
MIS:          0

I don't know what it means, but maybe there's some information for you in 
there ;-) . If it's of any effect, I'm running a generic kernel right now and 
the card's not connected, but the system is the same. There's 
no /etc/init.d/rtirq on my system, so I can't provide that information...