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   9   377    16   +319us[ +319us] +/-   38ms
^- 213.239.239.165               2   8   377   139   -187us[ -187us] +/-   48ms
^- 213.239.239.166               2   9   377   379    -56us[ +222us] +/-   62ms
^+ 2a01:3f7::1                   1   9   377   461    +44us[ +314us] +/- 3496us
^* 194.58.200.20                 1  10   377   184   +157us[ +456us] +/- 3454us
^- 2001:638:610:be01::103        1   9   377   325  +2194us[+2478us] +/-   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 ----- -----    0   1.0   -37ms   +38ms  N
D 213.239.239.165           N ----- -----  123   1.0   -38ms   +38ms  N
D 213.239.239.166           N ----- -----  363   1.0   -48ms   +47ms  N
+ 2a01:3f7::1               N ----- -----  445   1.0 -3479us +3571us  N
* 194.58.200.20             N ----- -----  168   1.0 -3335us +3652us  N
D 2001:638:610:be01::103    N ----- -----  309   1.0   -13ms   +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
==============================================================================
2a01:4f8:0:a0a1::2:1        6   3   43m     +0.039      0.261   +219us    59us
213.239.239.165             6   3   25m     +0.169      0.381   -154us    60us
213.239.239.166             6   3   85m     -0.009      0.351   -192us   205us
2a01:3f7::1                10   5   77m     +0.004      0.064    -57us    59us
194.58.200.20               6   3   86m     +0.011      0.233    +59us   104us
2001:638:610:be01::103      7   4   51m     +0.034      0.228  +2132us    89us

Command: chronyc -n tracking

Reference ID    : C23AC814 (194.58.200.20)
Stratum         : 2
Ref time (UTC)  : Tue Apr 14 01:31:56 2026
System time     : 0.000195291 seconds fast of NTP time
Last offset     : +0.000299176 seconds
RMS offset      : 0.000215908 seconds
Frequency       : 11.390 ppm slow
Residual freq   : +0.005 ppm
Skew            : 0.090 ppm
Root delay      : 0.006847688 seconds
Root dispersion : 0.000308279 seconds
Update interval : 1042.8 seconds
Leap status     : Normal