twtpe3-2kg9ezv has been reporting -100 for almost a week now. Is this ( time2.google.com ) server no longer active?

Well, there will indeed be a “dotted line” at the -100 line for that monitor’s plots. But apart from that, it doesn’t really screw up the graph. The displayed score scale is always from -100 to 20, even if all the scores of all the monitors are at 20. I’ll also mention for completeness that this mo…

No, it just can’t reach your server for whatever reason. It seems to be able to reach some other NTP servers just fine, but not all.

I understand. It’s screwing up the graph unfortunately. Why would it the only one not being able my server for days not w?

@theking2 a github issue to have the graph not show outliers from the “candidate” pool would be appreciated; if I am understanding your report correctly. Sign in to GitHub · GitHub

Incidently the situation has not changed. twtpe3-2kg9ezv is listed under candidates with a score of -100. I know it should not concern me but doens´t this mean there a systematic problem? I understand the server itself has a score of 20 but what is wrong with monitoring if a candiate with a score of…

Can you show us the page of the server what you are talking about?

pool.ntp.org: Statistics for 83.97.85.45 This one . The -100 are visible as the dotted line at the bottom

Long explaination short answer: Who / what select the candidates?. The process that selects the candidates is flawed.

Every monitor is candidate unless promoted to the limited set of testing or active. To be candidate a monitor is not selected, the other two kind are selected when their measurement quality is good enough.

That clears it up than. Googles ntp server is a monitor, can potentially monitor our servers (candidate) but currently is not as there is something in the path between googles ntp monitor and our servers. It probably is this forever, for whatever reason. But currenty there is no process in place th…

[image] theking2: But currenty there is no process in place the will stop the combination of monitor server and pool server to appear even when they cannot “see” each other I think seeing the black holes in the Internet is even good thing. One person, one day, may act on that.

Twtpe3-2kg9ezv -100 for days on end

Server operators

MagicNTP March 22, 2026, 10:07am 14

See this description of the different monitor states, and transitions between them.

Topic		Replies	Views
Who watches the watchers? Client Configuration and Development	14	437	September 22, 2026
Monitor scoring glitch when ntpd isn't listening? Pool Development monitoring	13	409	December 25, 2025
Score -99.9 but monitoring servers saying 20 Server operators monitoring	10	751	September 5, 2023
Suggestions for monitors, as Newark fails a lot and the scores are dropped too quickly Server operators monitoring	91	4919	August 2, 2021
Score/network woes Server operators monitoring	71	7636	March 7, 2019

Twtpe3-2kg9ezv -100 for days on end

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