[ntp:questions] Re: "ntpd" and hwclock

David J Taylor david-taylor at blueyonder.co.not-this-bit.nor-this-part.uk.invalid
Sat Oct 1 08:55:31 UTC 2005


Danny Mayer wrote:
> David Woolley wrote:
>> In article <db8e0$433b0f10$3ec37582$17819 at news.chello.nl>,
>> M.C. van den Bovenkamp <marco at linuxgoeroe.dhs.org> wrote:
>>
>>
>>> Yes. As long as it is synchronized, it will update the hardware
>>> clock every 11 minutes. Just a 'single shot' ntpd -g -q is *not*
>>> enough for
>>
>>
>> ntpd does not update the CMOS clock.  The linux kernel updates it
>> after anything declares the time to be synchronised, using the
>> adjtimex system call.  You can do that with the ntptime utility
>> without ever running ntpd.
>>
>
> The Windows version is supposed to. I don't know about the other
> O/S's.
> Danny

Only when you stop NTP, though [in the Windows version].  Not during 
routine operation, as that would affect the system time.

David 





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