On Fri, 9 Nov 2007, Arnold Schekkerman wrote: > Hi, > > This reply is of list, as I don't think this reply belongs there. > > > IMHO the 'official' ntpd-list or news group does not really listen if your > name is not Mills, or if the name of your teacher is not Mills. It's a bit > of a shame. If you come up with valid arguments, but mr. Mills sees > otherwise, the discussion ends.
Agreed, I have named that the "ntp mentality" before on this list ;-) > > > > If ntpd measures 4 servers, every 20 minutes it gathers 12 measurements per > hour, 288/day. So if your system runs for half a year or so, ntpd has a huge > amount of info it *can* use, but it doesn't. You can see it when you restart > your system and let it cool down to room temperature in between. It takes > hours with very large frequency changes in between. > > The same applies to the leap second (or a false one) if not all upstream > servers agree. Ntpd went crazy on some systems (I firewalled the systems > that did not announce the right leap info and all went by smooth here). I > argued in the group that ntpd should use all the historic data to build up a > bit more trust in the local clock and that it should never jump back and > forth between two groups of servers (one with and one without the leap), > causing very large offsets (much more than 1s) because of huge > overcompensation of the local frequency. Mills said I should read the > Byzantium problem and that closed the discussion for the 'insiders'. The > best 'we' got was the acknowledgement of Mills & Co that ntpd was not stable > on some systems. > > Anyway, Louis, I like your way of thinking :-) > Perhaps it is worthwhile to help openNTP to improve the algorithm? That > seems to be the week part. It is more secure and has better design than ntpd. > Indeed ! Cheers, > Kind regards, > Arnold &:-) > -- > \|/ ____ \|/ E-mail: [EMAIL PROTECTED] > You can't confuse him, @~/ ,. \~@ Fight for your right on PRIVACY! > he's not paying attention. /_( \_ / )_\ Use PGP! http://www.gnupg.org > \__U_/ > > The manual said 'Windows XP or better'... > ...so I use Linux! > > Louis http://blogtech.oc9.com http://www.pool.ntp.org/scores/207.236.226.149 _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
