[Pool] Score is drop in cycles

lst_hoe02 at 79365-rhs.de lst_hoe02 at 79365-rhs.de
Wed Feb 19 09:11:37 UTC 2014


Zitat von 王明达 <mingdawang at 163.com>:

> Hi  All,
>
> 	I try add my ntp server to pool, but I found it's score is drop in  
> cycles , I think it's related to traffic,but the system's load is  
> very low, I didn't find any error in log, configure file pls see the  
> attachment. How to find the bottleneck of the system? Looking  
> forward to your reply.
>
> http://www.pool.ntp.org/scores/114.113.198.166
>
> [root at hz1-12-168 ~]# uname -a
> Linux hz1-12-168.inter.163.com 2.6.32-431.5.1.el6.x86_64 #1 SMP Fri  
> Jan 10 14:46:43 EST 2014 x86_64 x86_64 x86_64 GNU/Linux
> [root at hz1-12-168 ~]#
>
> [root at hz1-12-168 ~]# ntpd -!
> ntpd 4.2.6p5
> ntpd 4.2.6p5 at 1.2349-o Mon Jul 15 09:22:49 UTC 2013 (1)
>
> [root at hz1-12-168 ~]# ntpq -pn
>      remote           refid      st t when poll reach   delay    
> offset  jitter
> ==============================================================================
> -64.113.32.5     .ACTS.           1 u   27 1024  377  358.521   
> -30.035   6.725
> *137.189.4.10    .GPS.            1 u  750 1024  377   81.095    
> -3.238   8.187
> +108.71.253.18   .GPS.            1 u  374 1024  377  311.508    
> -2.693   5.882
> +83.163.209.244  .GPS.            1 u  416 1024  377  404.777    
> -1.397   7.461
> -89.109.251.23   .PPS.            1 u  486 1024  377  295.556   
> -37.660  50.758
> -193.190.230.65  .PPS.            1 u  546 1024  377  407.231   
> -17.679  19.307
> [root at hz1-12-168 ~]#
>
> 2014-02-14
> Mingda Wang


Hello,

You have a very long round trip time to your peers you get time from.  
Delay values should be below 100ms in today networks, you should maybe  
look for "closer" NTP peers.

Furthermore the Jitter values are bad which could lead to the strange  
score plot. Do you by any chance have another source of clock  
adjustment beside ntpd or is this maybe a virtual host with the  
(hardware-)clock set by the hypervisor?

Regards

Andreas





More information about the pool mailing list