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   313    -52us[-6150ns] +/-   40ms
^- 2a01:4f8:0:a112::2:2          2   9   377   391   -421us[ -376us] +/-   53ms
^- 2a01:4f8:0:a101::2:3          2   9   377    69    -60us[  -60us] +/-   48ms
^* 2a01:3f7::1                   1  10   377   132    -67us[  -20us] +/- 3534us
^+ 194.58.200.20                 1  10   377   797    -21us[  +20us] +/- 3648us
^- 2001:638:610:be01::103        1  10   377   367  +1898us[+1943us] +/-   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 ----- -----  244   1.0   -40ms   +40ms  N
D 2a01:4f8:0:a112::2:2      N ----- -----  321   1.0   -34ms   +33ms  N
D 2a01:4f8:0:a101::2:3      N ----- -----    0   1.0   -29ms   +29ms  N
* 2a01:3f7::1               N ----- -----   63   1.0 -3603us +3469us  N
+ 194.58.200.20             N ----- -----  727   1.0 -3614us +3627us  N
D 2001:638:610:be01::103    N ----- -----  297   1.0   -13ms   +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        9   7  137m     +0.037      0.021    -50us    28us
2a01:4f8:0:a112::2:2       15   8   73m     -0.055      0.024   -464us    25us
2a01:4f8:0:a101::2:3        7   4  103m     -0.017      0.113  +9000ns    80us
2a01:3f7::1                 9   4  137m     +0.001      0.037    -37us    47us
194.58.200.20               7   3  103m     +0.013      0.103    +39us    60us
2001:638:610:be01::103      8   5  120m     +0.004      0.032  +1957us    32us

Command: chronyc -n tracking

Reference ID    : 86474215 (2a01:3f7::1)
Stratum         : 2
Ref time (UTC)  : Tue Jul 28 03:52:48 2026
System time     : 0.000060286 seconds fast of NTP time
Last offset     : +0.000046929 seconds
RMS offset      : 0.000059187 seconds
Frequency       : 9.479 ppm slow
Residual freq   : +0.003 ppm
Skew            : 0.040 ppm
Root delay      : 0.007006183 seconds
Root dispersion : 0.000200298 seconds
Update interval : 1031.7 seconds
Leap status     : Normal