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               
===============================================================================
^- 2a01:4f8:0:a0a1::2:1          2  10   377   744    -70us[  +76us] +/-   50ms
^- 213.239.239.165               2   7   377    33   -445us[ -445us] +/-   40ms
^- 2a01:4f8:0:a101::2:3          2   8   377    68   -144us[ -144us] +/-   45ms
^* 2a01:3f7::1                   1   9   377   374    -84us[  +67us] +/- 3590us
^+ 194.58.200.20                 1  10   377   727  +6968ns[ +153us] +/- 3426us
^- 2001:638:610:be01::103        1   7   377    31  +1954us[+1954us] +/-   15ms

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 2a01:4f8:0:a0a1::2:1      N ----- -----  713   1.0   -35ms   +34ms  N
D 213.239.239.165           N ----- -----    2   1.0   -37ms   +36ms  N
D 2a01:4f8:0:a101::2:3      N ----- -----   37   1.0   -30ms   +30ms  N
* 2a01:3f7::1               N ----- -----  343   1.0 -3768us +3813us  N
+ 194.58.200.20             N ----- -----  696   1.0 -3478us +3473us  N
D 2001:638:610:be01::103    N ----- -----    0   1.0   -14ms   +17ms  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
==============================================================================
2a01:4f8:0:a0a1::2:1        6   3   85m     +0.032      0.666   -277us   275us
213.239.239.165             6   3   21m     -0.120      0.091   -446us    13us
2a01:4f8:0:a101::2:3        7   5   25m     -0.042      0.349   -112us    65us
2a01:3f7::1                 6   3   42m     +0.311      0.584   +348us   115us
194.58.200.20              12   7  189m     -0.013      0.071   -228us   201us
2001:638:610:be01::103      6   3   645     -0.187      0.233  +1951us    14us

Command: chronyc -n tracking

Reference ID    : 86474215 (2a01:3f7::1)
Stratum         : 2
Ref time (UTC)  : Tue Apr 21 02:43:48 2026
System time     : 0.000150952 seconds fast of NTP time
Last offset     : +0.000150568 seconds
RMS offset      : 0.000110911 seconds
Frequency       : 4.752 ppm fast
Residual freq   : +0.003 ppm
Skew            : 0.079 ppm
Root delay      : 0.007119055 seconds
Root dispersion : 0.000528786 seconds
Update interval : 519.0 seconds
Leap status     : Normal