[linux-audio-user] IRQ sharing

[Florin Andrei]

On Sun, 2006-03-05 at 03:35 -0500, Eric Dantan Rzewnicki wrote:
> Old school Linux Audio lore held that it was bad to let your audio card
> share an IRQ with anything else. Is this a myth, or still good solid
> practical advice?

It might still have some influence, but nowadays the typical hardware is
so fast, it doesn't matter like it used to.

I'm getting pretty good latency with no xruns when running jackd with
real-time priority, despite INT 5 being crowded like hell:

$ cat /proc/interrupts
           CPU0
  0:    5132562          XT-PIC  timer
  1:      43690          XT-PIC  i8042
  2:          0          XT-PIC  cascade
  5:     298405          XT-PIC  ICE1712, Bt87x audio, bttv0,
ohci_hcd:usb2, eth0
  7:         10          XT-PIC  parport0
  8:          1          XT-PIC  rtc
  9:          0          XT-PIC  acpi
 10:          4          XT-PIC  ehci_hcd:usb1
 11:    1849056          XT-PIC  ohci_hcd:usb3, ohci1394, nvidia
 12:     333945          XT-PIC  i8042
 14:     107572          XT-PIC  ide0
 15:     183634          XT-PIC  ide1
NMI:          0
LOC:          0
ERR:          0
MIS:          0

-- 
Florin Andrei

http://florin.myip.org/