Re: coreaudio "ethernet audio" driver issues
Re: coreaudio "ethernet audio" driver issues
- Subject: Re: coreaudio "ethernet audio" driver issues
- From: Markus Medau <email@hidden>
- Date: Fri, 29 Aug 2003 15:29:38 +0200
Hi Jeff,
>
USB Audio has a similar problem. It does all it's work on a secondary
>
interrupt that is queued from the USB driver's primary interrupt. So,
>
the USB Audio driver used to fall behind when there was a load in an IO
>
thread. In 10.2, we modified the USB driver to lay down all the info
>
the USB Audio driver needs from inside the USB driver's primary
>
interrupt. This allows the USB Audio driver to sniff the packets and
>
deal with them from when it gets called on the HAL's IO thread in the
>
case where the secondary interrupt has fallen behind due to load.
There's another point I noticed - with USB audio there were always
times of high CPU load (according to the CPU monitor) about once a
minute or so. This seems to be way better with 10.3 - are there any
changes?
Best regards
Markus
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