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- To: "Miroslav Lichvar" <mlichvar@xxxxxxxxxx>
- Subject: Re: [chrony-users] Offsets for non tested servers
- From: "Sebastien WILLEMIJNS" <sebastien@xxxxxxxxxxxxxx>
- Date: Mon, 31 Aug 2026 22:05:42 +0200
- Cc: chrony-users@xxxxxxxxxxxxxxxxxxxx
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On Mon, Aug 31, 2026, at 09:10, Miroslav Lichvar wrote:
> On Sun, Aug 30, 2026 at 09:15:30PM +0200, Sebastien WILLEMIJNS wrote:
>> Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev
>> ==============================================================================
>> syrte8.obspm.fr 33 17 140m +0.012 0.207 -73us 752us
>> ntp0.cam.ac.uk 30 13 135m +0.056 0.247 +330us 820us
>> svl2.nts.netnod.se 18 8 125m +0.230 0.332 +1209us 958us
>> swice-nts1.switch.ch 0 0 0 +0.000 2000.000 +0ns 4000ms
>> sth2.nts.netnod.se 19 7 133m +0.022 0.517 -1608us 1379us
>>
>> ... i do not understand how devs can find an offset of any value (here "0ns") for an... untested NTP server...
>
> What do you mean by an untested server?
>
Hello,
an NTP server which has been never used by chrony... yopu can see this cas just after a stop and start like:
guest@guest:~
$ sudo service chrony stop ; sudo service chrony start
Stopping time daemon: chronyd.
Starting time daemon: chronyd.
guest@guest:~
$ chronyc sourcestats
Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev
==============================================================================
185-10-255-61.Worldline.> 0 0 0 +0.000 2000.000 +0ns 4000ms
rtr-01.pa4.rdem-systems.> 1 0 0 +0.000 2000.000 -70ms 4000ms
rtr-01.pa3.rdem-systems.> 0 0 0 +0.000 2000.000 +0ns 4000ms
ns-rds.rdem-systems.com 0 0 0 +0.000 2000.000 +0ns 4000ms
If a NTP server is not (yet) used, you must not have an offset.
Let "+0ns" or any other value on this case is totally fake ! You can not have
a result for a thing which has been never used ^^
You must have a real value or nothing !
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