Re: iTunes stuttering, and don't shoot me--it might involve Core Audio
Re: iTunes stuttering, and don't shoot me--it might involve Core Audio
- Subject: Re: iTunes stuttering, and don't shoot me--it might involve Core Audio
- From: Nick <email@hidden>
- Date: Tue, 30 Aug 2005 18:19:47 +0100
On 9 Aug 2005, at 23:12, Jeff Moore wrote:
Without going into the possible reasons for them (there are a
myriad of possibilities), glitches usually manifest themselves as
an overload or other anomaly in the HAL. The best tool to use to
observe the HAL is HALLab's IO cycle telemetry. The telemetry lets
you hook into a target app and snoop on what the HAL is up to. It
also lets you take latency traces based on telemetry events.
Between the two kinds of data you should be able to get a pretty
darn good idea about why something is glitching.
This sounds very cool, and would help me with a problem I'm looking
into at the moment.. Except that I can't see how to do this in
HALLab. Am I missing something really obvious?
Thanks,
Nick
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