On Aug 23, 2008, at 6:56 PM, Nelson Minar wrote: > Ask Bjørn Hansen wrote: >> >> My best guess is that your IP got into the cache of a popular DNS >> recursor for 15 minutes. Would you be able to track the traffic >> during a spike and help figure out if that's true? > > I can do better than that; I log a timestamp and IP address for > every single NTP request I get and have those logs going back many > months. What sort of spikes are you interested in; the sharp very > quick jumps?
Yeah, in particular ones that are not at midnight local time (seen from the user). :-) Well, even those would be interesting I guess -- what I am going for is to find out if Big Corps are using the pool (in particular if they are in a braiddead ever midnight way) and - in particular - if DNS caching at big ISPs is significantly affecting the distribution of requests to the pool. > <NTP requests for four hours.png> > > There's 3 in that graph above: 22:00, 23:00, and 01:00. I'm guessing > it's not an accident that I'm getting that exactly on the hour :- > ( What would you like to learn about those spikes? I take it the time scale on your graph is one hour ahead of Pacific time. :-) > - ask -- http://develooper.com/ - http://askask.com/ _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
