On Fri, Oct 16, 2009 at 11:58:42AM -0400, der Mouse wrote: > > The on-the-hour spike starts about a second before the hour with the > > majority of clients hitting my server between 1.12 seconds and 3.31 > > seconds after the hour. It slowly tails off till about 9 second when > > it's reached normal levels. At its highest point it's about 4 times > > normal activity. > > That is very interestingly different from the top-of-the-hour behaviour > I see (see the graph I pointed to earlier). I wonder what the relevant > difference is....
Hum, missed your image for some reason. You get very pronounced 5-minute spikes in comparison to me. I think maybe it could be to do with the whole turk-telecom thing as I'm in europe and I'd guess you're mainly north-america. There are also differences as I was only aggregating up to 10ms. If I do it in 10second intervals I am closer to you. I've put a few plots here: http://samason.me.uk/~sam/tmp/ntp-withinhour-10secbins.pdf http://samason.me.uk/~sam/tmp/ntp-withinhour-1secbins.pdf http://samason.me.uk/~sam/tmp/ntp-withinhour-10msbins.pdf The last is just of the few seconds covering the hour because otherwise it gets a bit too messy. -- Sam http://samason.me.uk/ _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
