Subject: Re: [PATCH v3 1/4] Add correlated clocksource deriving system time from an auxiliary clocksource

From: Richard Cochran <[email-masked]>
Date: Fri, 4 Sep 2015 10:11:22 +0200

On Thu, Sep 03, 2015 at 11:20:37PM +0000, Hall, Christopher S wrote:
> In addition to the network interface, ART will be used in the audio interface as well.
> We need to support the case where an audio co-processor will control the audio device.
> In this case, the get_ts() function supplied by the audio driver will be very slow
> (several milliseconds) and the result will be out of date by some fraction of that 
> amount.

Why does it take milliseconds to read one audio time stamp?

Thanks,
Richard