[ntp:questions] Fine tuning ntp.conf

William Unruh unruh at invalid.ca
Fri Apr 26 17:39:23 UTC 2019


On 2019-04-26, David Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
> On 26/04/2019 14:31, jeliskoski at 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. 



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