[ntp:questions] Clock jumps when refclock used

A C agcarver+ntp at acarver.net
Sat Apr 14 06:35:53 UTC 2012

On 4/13/2012 23:26, Dave Hart wrote:
> Please share the sys_fuzz messages you see along with any insight into
> how they differ with configuration that you can provide.  On-list or
> off-list is fine.  Those messages are indicating time apparently going
> backwards and may be revealing a bug in ntpd or your OS.
> Cheers,
> Dave Hart

I will do so.  I get quite a few of them in the refclock configuration. 
  I get some with Internet only but not as many.  I'm going to let the 
current configuration run for a few more days and then provide those 
sys_fuzz messages.  Afterwards I'll switch the configuration and track 
it again.  The current configuration has both refclocks noselected, 
kernel discipline disabled, and five Internet sources.  There are no 
preferred peers or any other unusual configurations other than a minpoll 
6 on the Internet servers (left over configuration from the refclocks). 
  The polling period is moving so the clock selection is working.  Right 
now the polling period has set itself for 1024 seconds with an average 
offset of about 4ms.

More information about the questions mailing list