[ntp:questions] Re: Excessive polling

Terje Mathisen terje.mathisen at hda.hydro.com
Thu Nov 13 20:38:17 UTC 2003


Chris Hastie wrote:

> I recently made the mistake of changing several things at the same time,
> coming out of it all with a previously well behaved server that quickly
> settled down to 1024s polling intervals now rarely getting beyond 64s.
> Amongst the changes:
> 
> CPU was changed because it packed in
> Upgraded from ntpd 4.1.1b-a to 4.2
> Added a simple MSF reference clock
> 
> Could any of these things have caused my server to become greedy, or
> should I be looking for something else. BTW, I don't have any maxpoll
> statements in ntp.conf.

Having a local refclock (MSF in your case) is enough to force all other 
references to stay at minpoll.

One possible "fix" is to specify a higher than default minpoll, but this 
will be less stable if you ever lose the refclock signal.

Terje
-- 
- <Terje.Mathisen at hda.hydro.com>
"almost all programming can be viewed as an exercise in caching"




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