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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] All network sources unusable
- From: Torsten Wolf <torsten.wolf@xxxxxxx>
- Date: Sun, 4 Jun 2023 12:07:44 +0200
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I added "noselect" to the NMEA (SHM0) source and restarted chrony. After
an hour the output is
$ chronyc -m sources sourcestats
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
#? GPS 0 4 377 8 -88ms[ -88ms] +/-
100ms
#* PPS 0 4 113 14 -2398ns[-3176ns] +/-
1053ns
^? zeit.fu-berlin.de 0 9 377 - +0ns[ +0ns] +/- 0ns
^? ptbtime1.ptb.de 0 9 377 - +0ns[ +0ns] +/- 0ns
^? ptbtime2.ptb.de 0 8 377 - +0ns[ +0ns] +/- 0ns
^? ptbtime3.ptb.de 0 8 377 - +0ns[ +0ns] +/- 0ns
^? ns.tu-berlin.de 0 8 377 - +0ns[ +0ns] +/- 0ns
Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev
==============================================================================
GPS 64 50 1012 +5.202 36.190 -117ms 24ms
PPS 15 9 796 -0.000 0.006 -1ns 1630ns
zeit.fu-berlin.de 0 0 0 +0.000 2000.000 +0ns 4000ms
ptbtime1.ptb.de 0 0 0 +0.000 2000.000 +0ns 4000ms
ptbtime2.ptb.de 0 0 0 +0.000 2000.000 +0ns 4000ms
ptbtime3.ptb.de 0 0 0 +0.000 2000.000 +0ns 4000ms
ns.tu-berlin.de 0 0 0 +0.000 2000.000 +0ns 4000ms
As far as I understand 377 indicates that the network sources can be
accessed, and the fact that the measurements.log file is constantly
updated with readings from those sources shows that data is being received.
Not sure why the Reach value for the PPS source is 113. A few minuts
later that value increased to 372, just to go down again afterwards.
Here is a the output of "chronyc ntpdata" from one of the external sources
Remote address : 192.53.103.104 (C0356768)
Remote port : 123
Local address : 192.168.1.105 (C0A80169)
Leap status : Normal
Version : 4
Mode : Server
Stratum : 2
Poll interval : 7 (128 seconds)
Precision : -25 (0.000000030 seconds)
Root delay : 0.000778 seconds
Root dispersion : 0.269699 seconds
Reference ID : C0A80169 ()
Reference time : Sun Jun 04 10:00:57 2023
Offset : -0.142506495 seconds
Peer delay : 0.000236495 seconds
Peer dispersion : 0.000000898 seconds
Response time : 0.000178912 seconds
Jitter asymmetry: +0.00
NTP tests : 111 111 1110
Interleaved : No
Authenticated : No
TX timestamping : Kernel
RX timestamping : Kernel
Total TX : 16
Total RX : 15
Total valid RX : 15
Denny Page schrieb am 04.06.23 um 00:20:
Try this:
chronyc -m sources sourcestats
This will print the sources and then the source stats. I suspect that the other sources you have are not actually being polled or are not reachable. Check the “Reach” column in sources.
Denny