In <[EMAIL PROTECTED]> Ask Bjørn Hansen <[EMAIL PROTECTED]> writes:
> This is for the people advocating that the empty-ish country zones > should be filled up with other nearby servers. > > I probably won't do that, but we can do something else to the same > effect. Nearly empty zones are not very good, but not a killer. Having the [0-2].XX.pool.ntp.org zones not be orthognal, however, is *really* bad. The latter needs to be fixed ASAP. > However, to make it work I need a "map" mapping countries to other > nearby countries. > > dk => se,no,de,uk > mx => us > gt => mx,us > ca => us > > etc. > > If someone or a group makes an initial list I can put that in the > system and in the web interface and we can improve on it from there. > > There shouldn't be any mappings that haven't been confirmed by > someone with local topology knowledge, so it'll be a bunch of work > putting together. By "local topology", I'm guessing you mean network topology. If that's the case, then there is unlikely to be any real country-wide rules for network topology in relation to other countries. It is all going to depend on which ISPs you use and where you happen to be in the country. And, even if you do have access to places to test from in a given country and can do network analysis to many other NTP servers in the pool from other countries, the network topology can change tomorrow. You can't get reasonable network topology information without careful study by each individual client, which is something we can't do. You need to either accept that geographic relationships are very crude, but acceptable appproximations for network topology, or accept that geographic relationships are too crude of an approximation to use at all. If you accept that geographic relationships are acceptable, then you should populate the continent/country/timezone zones based off of those relationships. If you decide that geographic relationships are not acceptable, then you need to CNAME all of the continent/country/timezone zones to point to pool.ntp.org. -wayne _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
