Subject: Re: [linux-audio-user] Is everyone sick of interrupts yet?
From: Lee Revell (rlrevell_AT_joe-job.com)
Date: Wed Sep 29 2004 - 19:20:38 EEST
On Wed, 2004-09-29 at 11:42, Mark Knecht wrote:
> 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.
> >
> 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...
>
Thanks for clarifying, I re-read your message and realized you might not
have a USB sound device. Anyway, if by "new Planet kernel" you mean 2.6
with the VP patches, then mouse activity should not be causing xruns.
I am not on the CCRMA list; if you have already posted your details then
send a link. This should be investigated further as it definitely
should work.
Lee
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