[ntp:questions] Re: NTP for dummies

David J Taylor david-taylor at blueyonder.co.not-this-bit.nor-this-part.uk.invalid
Sat Oct 1 09:13:27 UTC 2005

David Woolley wrote:
> Danny says that the latest Windows version of ntpd itself takes
> responsibility for updating the hardware clock, probably because
> Windows itself is lacking in this respect.  I have a feeling though
> that it only does this when the system is shut down.  Unix systems
> also often do this on a shutdown.

Windows will update both the hardware and software clocks with the 
SetSystemTime function (IIRC), but NTP doesn't use that function in normal 
operation - it alters the clock rate instead (as you know, of course).

As the OS functions have been bypassed, perhaps NTP on the Windows 
platform should replace the functionality it has bypassed with an 
occasional setting of the hardware clock?  Perhaps this is true for other 
operating systems as well?


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