Re: [sc-dev] idle scsynth CPU usage

[chris clepper <cgc@xxxxxxxxxxxxxxxx>]

On 1/8/06, Joshua Parmenter <joshp@xxxxxxxxxxxxxxxx> wrote:
> Thanks Chris.
>
> 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.  The saved session is rather
> large (1.2 MBs), but if anyone is interested in the data collected,
> let me know and I can e-mail it off.

That could indicate a change in the controller chip and the driver
that goes with it as the problem.  The CoreAudio list might be the
place to take your findings.