Hi Dag-Erling, On Mon, 2008-02-11 at 00:12 +0100, Dag-Erling Smørgrav wrote: > Jan Hoevers <[EMAIL PROTECTED]> writes: > > That's correct, it is a network issue. The monitoring system is in > > California, for us here in europe there's an ocean and a continent in > > between. > > > > I did some simple tests on this a few months ago; my conclusion was that > > the monitoring system can be used to see if my server is reachable, > > nothing more. The inaccuracies introduced by the network are in the > > order of ten to fifty ms, with peaks far over 100 ms, while a carefully > > run stratum 2 server doesn't have to be more than a millisecond off. > > Yet it somehow never has any trouble with my server: > > http://www.pool.ntp.org/scores/194.63.250.121 > > Note that the offset is mostly within 2 ms, with occasional peaks > approaching 10 ms.
I see spikes not very much smaller than Jans from my servers. http://www.pool.ntp.org/scores/130.236.254.17 This one is connected to a LAN with GE connection to Internet. It gets time from a high end Meinberg GPS receiver. But as discussed previously this is not a monitoring system to evaluate absolute performance of you time server, its a system to kick out servers that are misbehaving badly. -- Björn _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
