Chrony Graphs [Data Legend]

Day
Week
Month
Chrony server statistics graph - day
Chrony system clock offset graph - day
Chrony system clock tracking graph - day
Chrony sync delay graph - day
Chrony clock frequency graph - day
Chrony clock frequency drift graph - day
Chrony server statistics graph - week
Chrony system clock offset graph - week
Chrony system clock tracking graph - week
Chrony sync delay graph - week
Chrony clock frequency graph - week
Chrony clock frequency drift graph - week
Chrony server statistics graph - month
Chrony system clock offset graph - month
Chrony system clock tracking graph - month
Chrony sync delay graph - month
Chrony clock frequency graph - month
Chrony clock frequency drift graph - month

vnStati Graphs

vnStat summary
vnStat daily
vnStat top 10
 vnStat hourly
vnStat monthly
vnStat yearly

Chrony - NTP Statistics

Command: chronyc -n sources -v


  .-- Source mode  '^' = server, '=' = peer, '#' = local clock.
 / .- Source state '*' = current best, '+' = combined, '-' = not combined,
| /             'x' = may be in error, '~' = too variable, '?' = unusable.
||                                                 .- xxxx [ yyyy ] +/- zzzz
||      Reachability register (octal) -.           |  xxxx = adjusted offset,
||      Log2(Polling interval) --.      |          |  yyyy = measured offset,
||                                \     |          |  zzzz = estimated error.
||                                 |    |           \
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- 213.239.239.164               2  10   377   319   -813us[ -813us] +/-   34ms
^- 213.239.239.165               2  10   377   520   -186us[ -186us] +/-   58ms
^- 2a01:4f8:0:a101::2:3          2  10   377   436   -101us[ -101us] +/-   43ms
^+ 194.58.200.20                 1  10   377   666    +82us[  +82us] +/- 3561us
^* 2a01:3f7::1                   1  10   377   833    -88us[  -66us] +/- 3647us
^- 2001:638:610:be01::103        1  10   377   371  +1974us[+1974us] +/-   16ms

Command: chronyc -n selectdata -v

  . State: N - noselect, s - unsynchronised, M - missing samples,
 /         d/D - large distance, ~ - jittery, w/W - waits for others,
|          S - stale, O - orphan, T - not trusted, P - not preferred,
|          U - waits for update,, x - falseticker, + - combined, * - best.
|   Effective options   ---------.  (N - noselect, P - prefer
|   Configured options  ----.     \  T - trust, R - require)
|   Auth. enabled (Y/N) -.   \     \     Offset interval --.
|                        |    |     |                       |
S Name/IP Address        Auth COpts EOpts Last Score     Interval  Leap
=======================================================================
D 213.239.239.164           N ----- -----    0   1.0   -34ms   +33ms  N
D 213.239.239.165           N ----- -----  201   1.0   -44ms   +42ms  N
D 2a01:4f8:0:a101::2:3      N ----- -----  117   1.0   -37ms   +37ms  N
+ 194.58.200.20             N ----- -----  347   1.0 -3488us +3665us  N
* 2a01:3f7::1               N ----- -----  513   1.0 -3612us +3495us  N
D 2001:638:610:be01::103    N ----- -----   51   1.0   -14ms   +18ms  N

Command: chronyc -n sourcestats -v

                             .- Number of sample points in measurement set.
                            /    .- Number of residual runs with same sign.
                           |    /    .- Length of measurement set (time).
                           |   |    /      .- Est. clock freq error (ppm).
                           |   |   |      /           .- Est. error in freq.
                           |   |   |     |           /         .- Est. offset.
                           |   |   |     |          |          |   On the -.
                           |   |   |     |          |          |   samples. \
                           |   |   |     |          |          |             |
Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
==============================================================================
213.239.239.164            18  10  292m     -0.010      0.023   -452us   116us
213.239.239.165            14   9  223m     +0.012      0.009    -96us    34us
2a01:4f8:0:a101::2:3        6   3   86m     -0.028      0.062   -118us    33us
194.58.200.20              11   6  172m     +0.018      0.044    +87us    97us
2a01:3f7::1                 9   7  138m     -0.002      0.020    -70us    23us
2001:638:610:be01::103     12   7  189m     +0.000      0.009  +1999us    26us

Command: chronyc -n tracking

Reference ID    : 86474215 (2a01:3f7::1)
Stratum         : 2
Ref time (UTC)  : Tue Mar 24 08:16:07 2026
System time     : 0.000009188 seconds fast of NTP time
Last offset     : +0.000021569 seconds
RMS offset      : 0.000058034 seconds
Frequency       : 5.232 ppm fast
Residual freq   : +0.000 ppm
Skew            : 0.020 ppm
Root delay      : 0.006983440 seconds
Root dispersion : 0.000921333 seconds
Update interval : 1026.4 seconds
Leap status     : Normal