[ntp:questions] strange behaviour of ntp peerstats entries.
David L. Mills
mills at udel.edu
Sun Feb 3 04:58:44 UTC 2008
David,
Can we take a time out? Can you read the NTPv4 specification where it
describes the system process? Our disussion would be much more
productive after that.
Dave
David Woolley wrote:
> David L. Mills wrote:
>
>> David,
>>
>> I don't know what you mean by "figure head", but this is probably what
>
>
> I meant that it is the one peer chosen to represent all the peers
> actually used.
>
>> is intended. The statistics such as root delay, root dispersion and
>> related statistics are in fact inherited from the system peer, but the
>> actual clock offset is computed as a weighted average. See the draft
>> MT{v4 specification.
>
>
> I believe that there is a common misconception that ntpd choses one peer
> and then uses that as the only source of time information unless and
> until it chooses a new one.
>
> I believe there is also a related one, which does have same historical
> basis in fact, that ntpd only uses time from the lowest numbered
> stratum. (As I understand it version three included the stratum in the
> weighting, but version 4 does not.)
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