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Re: Excessive CPU usage?

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Re: Excessive CPU usage?

Subject: Re: Excessive CPU usage?
From: Jeff Moore <email@hidden>
Date: Tue, 19 Oct 2010 11:19:09 -0700

Are you using the built-in speaker? If so, that is the driver doing some DSP to protect and enhance the speaker. It goes away if you plug something (headphones, etc) into the jack.

--

Jeff Moore
Core Audio
Apple

On Oct 18, 2010, at 1:52 AM, Robert Bielik wrote:

Ok, trying to narrow down why my app takes 5% CPU (Debug), I eliminated everything in the IOProc
callback. No change. With my application doing absolutely nothing, it still takes 5% CPU with
most time in CoreAudio (time profiler show iokit_user_client_trap on top)

Any ideas ?
TIA
/Rob

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