[ntp:questions] simple nt.conf cases for ntp-client

William Unruh unruh at invalid.ca
Fri Jan 24 17:42:56 UTC 2014

On 2014-01-23, David Woolley <david at ex.djwhome.demon.invalid> wrote:
> On 23/01/14 13:06, Marco Marongiu wrote:
>> 3) second filter: a new value for the error that fits the majority of
>> these C references is calculated; the L references that don't fit in
>> this error interval are called "outlyers"; the S=C-L references that
>> remain are considered;
> Ones that don't fall within the the largest mutually consistent set of 
> error bounds are called "false tickers", not "outlyers".
>> 4) peer selection: among the references in S, the one that has the
>> smallest dispersion is selected, and ntpd will "follow" it until the
>> next evaluation of the data collected from the sources.
> This is used for the figurehead peer that defines the stratum and error 
> statistics.  All the ones that are valid and not outlyers or false 
> tickers will be tracked for time synchronisation purposes.  (The is a 
> hysteresis mechanism that means that the system peer will not change as 
> often as the description implies.)

Does it use the time from that one, or some sort of "average"? Since the
queries of the different servers occur at different times (separated by
about and hour, given the initial filter  at poll 10) how does it take the averagei
if it uses the average?


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