In message [EMAIL PROTECTED], Steve Allen writes: Here is one indication of NTP response to the presence of low stratum servers which did not behave well. http://members.iinet.net.au/~nathanael/ntpd/leap-second.html I grabbed a set if IP#'s from pool.ntp.org and monitored them in the 24 hours before and 8 hours after the leap. Out of a set of 12 IP#'s two public stratum 1 servers never set the leap bit, but did apply the leapsecond locally. One of the 12 was a stratum 1 using DCF signal, and that one as expected only set the leap warning one hour before the event. Ten hours after the event, two stratum 3 servers in the set still had the leap warning bits set. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
I grabbed a set if IP#'s from pool.ntp.org and monitored them in the 24 hours before and 8 hours after the leap. I did something similar using the public NTP server lists on the ntp wiki. I'm still collecting the data, but I have some plots of what's happening with the leap bits at: http://www.maths.tcd.ie/~dwmalone/time/leap2005.html It wasn't really until 24 hours before that a significant number of servers were advertising the leap, peaking in the last measurement before the leap. Interestingly, one server actually advertised a leap in the wrong direction! After the leap it looks like more stratum 1 servers were unsynchronised than usual, though that seems to have setteled down a bit now. The number of people with the leap bits set is dropping, but isn't quite zero yet. I have the peers information from out local ntp server around the leap. Our server did the right thing, but it looks like there were a number of others that didn't. I haven't figured out how to visualise that yet. David.
Here is one indication of NTP response to the presence of low stratum servers which did not behave well. http://members.iinet.net.au/~nathanael/ntpd/leap-second.html -- Steve Allen [EMAIL PROTECTED]WGS-84 (GPS) UCO/Lick ObservatoryNatural Sciences II, Room 165Lat +36.99858 University of CaliforniaVoice: +1 831 459 3046 Lng -122.06014 Santa Cruz, CA 95064http://www.ucolick.org/~sla/ Hgt +250 m