Re: [sc-dev] idle scsynth CPU usage

[Joshua Parmenter <joshp@xxxxxxxxxxxxxxxx>]

Aaah... got it.

Actually, I just tried running everything thorough JackOSX, and the  
problem with scsynth disappears, but it shows up now in jackd! Same  
problem... around 8% CPU on the CAPThread. And this was setting Jack  
to use portaudio instead of coreaudio, so perhaps the Core Audio list  
is not the place to post this problem.

Thanks for the idea Jonathan,

Josh

******************************************
Joshua Parmenter
joshp@xxxxxxxxxxxxxxxx
Post-Doctoral Research Associate - Center for Digital Arts and  
Experimental Media
Raitt Hall - University of Washington
Seattle, Washington 98195

http://www.dxarts.washington.edu
http://www.realizedsound.net/josh/


On Jan 8, 2006, at 7:46 PM, jonathan segel wrote:

> keylargo is the internal sound chip controller on the other alu- 
> powerbook..
> oh wait, maybe it's not. i think "snapper" is the chip. i'm trying  
> to remember from configs for when i installed gentoo on a  
> powerbook. the device is Texas Instruments TAS3004.
>
> i was wondering if it's the same chip and controller, but now i'm  
> gonna have to do more research to figure out what to compare it to!
>
> by different driver i mean something other than the internal one,  
> like a digidesign or indigoIO or something?
>
>
>
> On Jan 8, 2006, at 7:15 PM, Joshua Parmenter wrote:
>
> > This is using all the internal defaults...
> >
> > How do I change the driver? And where would I see if it is KeyLargo?
> >
> > On Jan 8, 2006, at 6:19 PM, Jonathan Segel wrote:
> >
> > > On Jan 8, 2006, at 5:00 PM, Joshua Parmenter wrote:
> > > > I ran Shark, and the difference came in the scsynth process,  
> > > > under the thread CAPThread. On the old machine, this was running  
> > > > at about 1%, on the new one, about 8%
> > >
> > > >  Most of this seems to be involving the  
> > > > com.apple.driver.AppleDBDMAAudio and the  
> > > > com.apple.iokit.IOAudioFamily libraries.
> > >
> > > i'm curious, is there an idle process difference also when using  
> > > a different coreaudio driver? or is it only the Apple built-in?  
> > > (is that still KeyLargo on these machines?)
>
> _______________________________________________________
>         Jonathan Segel  --  4014 Brookdale Ave. Oakland, CA 94619
>                 MAGNETIC -- http://www.MagneticMotorworks.com
>
>
>
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