[linux-audio-user] Is everyone sick of interrupts yet?

[Mark Knecht]

Lee Revell wrote:
> On Wed, 2004-09-29 at 09:55, Mark Knecht wrote:

>>For me this is not a mere curiosity. Yesterday I brought up FC2 and 
>>then, with much help from Steve Harris and Fernando, got a new Planet 
>>kernel installed. No sooner than I had started Jack I then started using 
>>my USB mouse and getting huge xruns. Since USB is shared with the sound 
>>chip I think it's an example of what we ae talking about here.
> 
> 
> Not quite.  If you have a USB sound card it's a different ball game,
> because you don't just have two separate devices sharing the interrupt,
> you actually have them competing for USB bus bandwidth.  Although it
> should work if they are on different USB controllers.  Unfortunately I
> am not an expert on USB so I can't help much more.
> 
> Lee
> 
> 

It is a PCI sound chip sharing an interrupt with a PCI USB OHCI (EHCI?) 
  contoller. There is no sharing of USB bandwidth. Sorry - that was 
badly worded before...