[ntp:questions] Offset is Slowly Increasing Over Time
Richard B. gilbert
rgilbert88 at comcast.net
Wed Mar 28 12:57:59 UTC 2007
Jason C. Wells wrote:
> If the dispersion on a client machine is spiking at 8 seconds does that
> indicate that my NTP server wants to be a rodeo cowboy? But seriously...
> I gathered up the loop and peer stats per the FAQ, posted here:
> If I restart all the NTP processes on my network I can get my clocks to
> sync for a while. At some later time the offset creeps up to over one
> second and the clients will reject my server.
> The dispersion graph is interesting. The offset doesn't seem to
> misbehave in a pattern resembling dispersion.
> About the only thing that I can tell from the graphs is that they are
> pretty. I was hoping that some good natured soul would look at them and
> say, "Here's your problem."
> My local NTP server syncs with my ISP just fine.
> Jason C. Wells
Dispersion is the accumulated error between the root (atomic clock
somewhere) and your server. A value of eight seconds indicates a
complete and total disaster! Eight milliseconds would be extremely
worrisome! Eight microseconds maybe?
If the graphs are pretty, how about if you draw them and post them on a
web site somewhere. Downloading your loopstats file and graphing them
locally is too much like work.
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