[ntp:questions] Ginormous offset and slow convergance

Pete Ashdown pashdown at xmission.com
Wed Nov 30 15:41:35 UTC 2011


David Woolley <david at ex.djwhome.demon.invalid> writes:

>Richard B. Gilbert wrote:
>> On 11/29/2011 1:42 PM, Pete Ashdown wrote:

>>> +time-C.timefreq .ACTS.           1 u   19   64  377   37.887  
>>> -16011.   0.122

>>> Is there anything I can do to decrease the convergence time?
>> 
>> Little or nothing!  NTPD can, and sometimes does, take ten hours to 
>> reach "steady state".  It needs about thirty minutes to find a 

>16 second excursions are not the result of ntpd convergence delays. 
>They indicate something seriously broken.  Possibly something else is 
>trying to set the time.

Thanks for the pointer David.  I added the local hardware clock (127.127.1.0)
to the ntp.conf and that nailed it down.  Now my convergence is under a
minute!



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