[ntp:questions] precision in a driver

Richard B. Gilbert rgilbert88 at comcast.net
Fri Jan 4 19:53:08 UTC 2008

Folkert van Heusden wrote:
> Hi,
> The precision-field set by a driver, what should one set there? If a
> clock gives ms values, -10? Or is it the real quality of the
> time-source? Like: maybe that on average the source has a quality of
> 10ms.
> Folkert van Heusden

The precision is the smallest possible difference between two 
consecutive requests for the time!  It's specified as a negative power 
of two.

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