[ntp:questions] Two time sources with offset => fails to synchronize
Richard B. Gilbert
rgilbert88 at comcast.net
Tue Feb 12 17:10:19 UTC 2008
Serge Bets wrote:
> Hello Thierry,
> On Tuesday, February 12, 2008 at 10:39:21 +0100, Thierry MARTIN wrote:
>>It seems that the Radio clock has 50ms offset compared to the GPS
>>source, which leads a failure in synchronisation.
> Radio clocks may need a fudge factor, typically around 20 ms, to report
> the right time. That's due mostly to filter delays in the radio
> Anyway even if all else gets
> perfect, you still have the worst number of clocks problem. One is good;
> two worst; four best.
Four is not necessarily "best". It's the smallest "robust"
configuration. Five and seven are the next two magic numbers in that
One is not necessarily good or bad; the problem is, if it's bad, how do
More information about the questions