On 2019-04-26, jelisko...@gmail.com <jelisko...@gmail.com> wrote: > On Friday, 26 April 2019 19:39:25 UTC+2, William Unruh wrote: >> On 2019-04-26, David Taylor <david-tay...@blueyonder.co.uk.invalid> wrote: >> > On 26/04/2019 14:31, jelisko...@gmail.com wrote: >> >> Hi guys, >> >> >> >> This is my config file for my NTP Stratum 2 server. Any suggestion for >> >> fine tuning will be appreciated. >> > [] >> >> # Use public servers from the pool.ntp.org project. >> >> # Please consider joining the pool (http://www.pool.ntp.org/join.html). >> >> #server ntp.svilengrad.eu iburst >> >> #server ntp.fizyka.umk.pl iburst >> >> server ntp.bsdbg.net iburst >> >> server ptbtime1.ptb.de iburst >> >> server zeit.fu-berlin.de iburst >> >> server ntp0.fau.de iburst >> > [] >> > One comment - why not use the pool servers, as suggested? Replace your >> > four lines with: >> > >> > pool de.pool.ntp.org minpoll 6 maxpoll 7 iburst >> > >> > You may find that some of the public servers you list may be overloaded, >> > or come and go from time to time - the "pool" directive takes care of >> > vanishing and overloaded servers. >> > >> One problem with the pool is that the servers have varying accuracy. If >> you have carefully chosen your servers as having low uncertainty, then >> your list might be better. But if you simply chose them randomly, then >> the pool will probably be just as good. > > Yes, I tried with nearest to my country
That is one issue (it should tend to make the round trip time, and thus the chances of assymetry) slightly lower. But I have found that sites 2000km away can be much better than some other sources 50 ft away. It really depends on all the switches/routers/etc between you and the source, and also what that source uses for its sources. For example one might use GPS time with a really good GPS card, while the other might use WWV. Both are stratum 1 sources, but on it a lot lot lot more accurate than the other. _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
