Re: ntp time requests

Bill Wilson <[email protected]>
Newsgroups gmane.comp.gnome.apps.gkrellm
Message-ID <[email protected]>
On Sun, 16 Sep 2007 14:45:37 -0400
Rio <[email protected]> wrote:

> here is the response i just got back from one of the time engineers in the 
> timekeepers forum:
> 
> "If I understand your question, the answer is "0 seconds". NTP is a 
> trivial protocol; a UDP packet comes in to the server, the server sends 
> a UDP packet back out to the client, and it's done"
> 
> maybe it is not the udp file that needs checking but to query the server 
> itself about its own statistics. hmm ... i am beginning to think that 
> realtime will be impossible and only historical can be reported.
> 
> Geoff Kuenning mentioned fmonitor and fchart that has an ntp query script with 
> it. maybe this is the answer? it appears though that the internet monitor 
> could keep count of the number of port 123 connections in a historical mode. 
> hmm.... i still have to download and check these 2 out.

I'm also now wondering if real time is possible.  Yes, the inet monitor could
keep a history of connections and count as a new hit any newly encountered
closed entry in the udp file, but the accuracy would depend on the assumption
that all closed connections will persist in the udp file long enough to be
sampled at the one second interval.  It would likely depend on incoming
connection rates or whatever kernel policies.

I guess I'll have to think this over some more... and for now hold off on
doing anything on that debugging tarball I mentioned.

Bill
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