I just noticed an interesting traffic pattern on my pool server's logs: NTP traffic went up a huge amount right before the transition to January 1, 2009. You can see the change here: http://www.somebits.com/ntp/one%20month.html
Requests / second went up from my usual 25 to nearly 300, a 12x increase. Some of the traffic may be new clients (I see a 3x spike in unique IPs), but a lot of it looks like existing clients sending more requests. Usually a single IP sends an average of 3 requests / 10 minutes, but during the spike interval it goes to 9 requests / 10 minutes, for a 3x increase. It's possible that's actually new clients sharing IP addresses of a NAT router. The oddest thing is the duration of the spike. I'd expect it to be a brief spike around 00:00 Jan 1 UTC as clients flubbed the leap second. But in fact the increase starts almost two days before and peaks several hours before 00:00. Any guesses what happened? Did other pool servers see the same spike? I have more data that could be analyzed if someone's really excited. PS: the pool server monitor thinks my offset was below 10ms most of the time over this time period. _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
