Re: What Parts of Linux Audio Simply Work Great? (was Re: [linux-audio-dev] Best-performing Linux-friendly MIDI interfaces?)

On Thu, Jun 16, 2005 at 05:59:09PM +0200, Florian Schmidt wrote:
> On Thu, 16 Jun 2005 10:30:29 -0400
> Paul Davis <paul@email-addr-hidden> wrote:
>
> > true, but i take it you get the way CoreAudio is doing it: it means you
> > can drive audio processing from a different interrupt source (e.g.
> > system timer) because you have very accurate idea of the position of the
> > h/w frame pointer. In CoreAudio, the "callback" is decoupled from any
> > PCI, USB or ieee1394 interrupt. Tasty.
>
> The price for this is afaik an extra period worth of latency. I'm not
> sure this is the way to go. Sure it makes handling of devices easier
> that do not generate irq's like pci soundcards do (all this USB and
> IEEE1394 stuff), but isn't the price too high?

Why should this take a extra period of latency ?

-- 
FA