[ntp:questions] nmea and initial large offset

David Lord snews at lordynet.org
Sun May 9 14:52:04 UTC 2010


John Hasler wrote:
> Richard B. Gilbert wrote:
>> I suspect that faster convergence would carry a price such as large
>> amplitude oscillation!
> 
> Chrony converges faster and doesn't oscillate.  I would like to see a
> rigorous analysis of the algorithms used by Chrony, though.
> 
>> If you can't stand it, roll your own!
> 
> Richard Curnow did and we now have Chrony.
> 
>> You may find that it's far more difficult than you think!
> 
> It wasn't easy.
> 
> I really don't understand why Rob will neither switch to Chrony nor fork
> Ntpd, since he is clearly dissatisfied and frustrated by Ntpd as it
> stands.  Both these choices are open to him, as is writing his own
> implementation from scratch.

Seems another possible alternative is on the way

http://www.cubinlab.ee.unimelb.edu.au/radclock/

At moment it's Linux/FreeBSD only, I guess it will be same as
for recent versions of ntpd and chrony and not be usable on
NetBSD.


David




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