Re: Hardware Clock

FROM : Ed Wynne
DATE : Sat Jul 08 08:48:53 2006

On Jul 8, 2006, at 1:38 AM, Gerriet M. Denkmann wrote:
> The problem: whenever (B) is initialized from (A) a random value in 
> the range -0.5 ... +0.5 seconds is added to the time.
> To test: make the time (B) equal to the correct wall clock time. 
> Sleep. Awake. Compare time to wall clock. See difference of 
> -0.5 ... +0.5 seconds.


The hardware clock is probably only second accurate and its likely 
the OS only samples it once, instead of polling for the next second 
increment. This would save about .5s (on average) from the wakeup time.

-Ed