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

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(several milliseconds) and the result will be out of date by some fraction of that 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