[LAU] Dual Delta Setup

[Paul Davis]

On Sun, Dec 30, 2012 at 9:46 AM, Fons Adriaensen <fons at linuxaudio.org>wrote:

> On Sun, Dec 30, 2012 at 02:22:51PM +0000, Ben Bell wrote:
>
> > Running with a more modest session hovering at 30% normally, pulling the
> > alsa_in channels (just into jack -- no connections) raises the CPU to
> ~55%
> > but there are no xruns.
> >
> > So it seems that the problem is most likely in the alsa multi plugin. As
> an
> > aside I'm surprised at the extent of resource usage caused by simply
> having
> > alsa_in running. Normal, or suspicious? jack_netsource doesn't cause this
> > sort of load, and tweaking sample rate and the like doesn't seem to
> affect
> > things. A side-effect of it expecting to need to resample everything?
>
> You could try zita-a2j instead of alsa-in. On my old 2G P4 machine
> adding 8 channels that way takes 10% CPU. Sound quality is vastly
> better than alsa-in.
>

it seems as if it may be wise to "replace" alsa_(in|out) with zita-a2j.
what do you think?
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