"Spoon" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Maarten Wiltink wrote: [...] > When you say that the clock in a server next to a door will wander a > lot, are you referring to the effects of the sudden temperature swing > when a cold draft comes in the server room?
Yes. >> The other potential problem is that there is a maximum drift that can >> be corrected. If the difference between your server and any other host >> is larger than that, the client won't be able to follow the server, >> while both would be able to follow UTC. This is unlikely but possible. > > I was wondering whether it is possible to reduce the maximum rate of > change? Is that what the tinker dispersion option is for? > > http://www.ee.udel.edu/~mills/ntp/html/miscopt.html > > "The argument becomes the new value for the dispersion increase rate, > normally .000015 s/s." > > Does this mean that the maximum rate of change is 15 µs per second? No, that's something else, probably the worst-case estimate for how fast synchronisation deteriorates between server polls. But that's no more than a guess. The number I mean is the 500PPM cap on the observed drift that NTP will accept before giving up. You can't change that without recompiling, IIAMN. Groetjes, Maarten Wiltink
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