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

[Bill Unruh <unruh@xxxxxxxxxxxxxx>]

chrony.conf is read when chronyd starts and not ever again. 
If you want to change stuff on the fly, use chronyc


On Thu, 30 Jul 2020, 金子 大志 wrote:

> 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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