[chrony-users] The polling setting change is not reflected immediately.

[金子 大志 <d.kaneko@xxxxxxxxxxxx>]

Hello,

I edited /etc/chrony.conf, and changed minpoll and maxpoll to 10 as
following.
>server 169.254.169.123 prefer iburst minpoll 10 maxpoll 10


But Update interval and Poll did not change as following.

# chronyc tracking
Reference ID    : A9FEA97B (169.254.169.123)
Stratum         : 4
Ref time (UTC)  : Thu Jul 30 00:53:25 2020
System time     : 0.000001145 seconds fast of NTP time
Last offset     : +0.000001765 seconds
RMS offset      : 0.000001262 seconds
Frequency       : 5.350 ppm fast
Residual freq   : +0.001 ppm
Skew            : 0.025 ppm
Root delay      : 0.000435249 seconds
Root dispersion : 0.000270846 seconds
Update interval : 16.2 seconds
Leap status     : Normal

# chronyc sources
210 Number of sources = 5
MS Name/IP address         Stratum Poll Reach LastRx Last sample
============================================================================
===
^* 169.254.169.123               3   4   377    13   -891ns[-1835ns] +/-
503us
^- y.ns.gin.ntt.net              2   6   377    47  -4695us[-4694us] +/-
105ms
^- ntp-b2.nict.go.jp             1  10   377   338    +49us[  +40us] +/-
2231us
^- ec2-3-114-30-212.ap-nort>     2   9   377   349   +165us[ +156us] +/-
32ms
^- x.ns.gin.ntt.net              2  10   377   619   +624us[ +621us] +/-
73ms


After rebooting the machine Update interval changed to 2.1 seconds, and Poll
changed to 10.
I waited for a while, Update interval changed to 1029.9 seconds.

[Question 1]
Why did the Update interval change to the very short time(2.1 seconds)?

[Question 2]
Does it take time to reflect the setting change?


Thanks,



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