[ntp:questions] Re: [Bug 177] Clock stepping messes up frequency. (fwd)
David J Taylor
david-taylor at blueyonder.co.uk.not-this-bit
Tue Nov 11 16:56:26 UTC 2003
> I guess I need to poke at the old ntp research papers a bit more. I
> can't believe I'm the first person to notice this.
> Wolfgang S. Rupprecht http://www.wsrcc.com/wolfgang/
> The From: address is valid. Don't mess with it.
Wolfgang (and others),
My observation is that given an equal set of e.g. stratum 2 servers, NTP
will select the one with the greatest delay if the jitter from the servers
is similar. This results in, for example, a server in a different
continent (170ms delay) being preferred over one that is much more local
(40ms delay). I believe this is a similar effect to the one that you
reported. Like you I prefer not to use the prefer qualifier.
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