[ntp:questions] Why is NTPD adjusting the system clock when in LOCAL(0) mode?
Terje Mathisen
"terje.mathisen at tmsw.no" at ntp.org
Thu Jun 16 17:41:28 UTC 2011
Chris Albertson wrote:
> On Wed, Jun 15, 2011 at 8:21 AM, Charles Elliott<elliott.ch at verizon.net> wrote:
>
>> Yet NTPD is constantly changing the curTimeAdjustment. Here is the evidence
>> from my program:
>>
>> CTA: 156003
>>
>> CTA: 156004
>>
>> CTA: 156003
>
> The adjustment seems to be by 1 and it goes up and down. I'd guess
> this is a round off from a floating value.
Almost correct: It is a us approximation to a ns value, so ntpd
aggregates the offset between the current correction and the ideal value
and adjusts to compensate.
Terje
--
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"
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