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   253   -504us[ -504us] +/-   35ms
^- 213.239.239.165               2  10   377   409   -353us[ -353us] +/-   52ms
^- 2a01:4f8:0:a101::2:3          2  10   377   372   -190us[ -190us] +/-   44ms
^+ 194.58.200.20                 1  10   377   565    -86us[  -86us] +/- 3574us
^* 2a01:3f7::1                   1  10   377   749    -80us[  -69us] +/- 3559us
^- 2001:638:610:be01::103        1  10   377   321  +1948us[+1948us] +/-   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   -22ms   +21ms  N
D 213.239.239.165           N ----- -----  156   1.0   -23ms   +22ms  N
D 2a01:4f8:0:a101::2:3      N ----- -----  119   1.0   -41ms   +40ms  N
+ 194.58.200.20             N ----- -----  312   1.0 -3512us +3448us  N
* 2a01:3f7::1               N ----- -----  496   1.0 -3550us +3422us  N
D 2001:638:610:be01::103    N ----- -----   68   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
==============================================================================
213.239.239.164            16  12  258m     +0.015      0.033   -434us   140us
213.239.239.165             8   5  121m     -0.010      0.044   -276us    43us
2a01:4f8:0:a101::2:3       13   7  206m     -0.004      0.012   -170us    40us
194.58.200.20              25  16  414m     +0.001      0.010    +52us    96us
2a01:3f7::1                20  12  327m     -0.000      0.004    -49us    30us
2001:638:610:be01::103     25  13  430m     -0.001      0.004  +1965us    39us

Command: chronyc -n tracking

Reference ID    : 86474215 (2a01:3f7::1)
Stratum         : 2
Ref time (UTC)  : Tue Mar 24 12:17:31 2026
System time     : 0.000021010 seconds fast of NTP time
Last offset     : +0.000010117 seconds
RMS offset      : 0.000029749 seconds
Frequency       : 5.234 ppm fast
Residual freq   : +0.000 ppm
Skew            : 0.004 ppm
Root delay      : 0.006889341 seconds
Root dispersion : 0.000804237 seconds
Update interval : 1044.1 seconds
Leap status     : Normal