Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Fri, 17 Apr 2009 17:50:24 -0500

Hi Lewis,

On Friday 17 April 2009 17:01:17 J. Lewis Muir wrote:
> I upgraded two VME IOCs to EPICS 3.14.10 and now am getting console
> messages like the following:
>
>   NTPTimeSync: NTP requests failing - S_sntpcLib_TIMEOUT
>   NTPTimeSync: Sync recovered.
>
> These messages seem to appear approximately every 5-10 minutes.
>
> What's causing this?

The messages are from the Time Provider in base/src/libCom/osi/osiNTPTime.c 
and are displayed when the vxWorks sntpcTimeGet() routine fails, implying the 
NTP request was dropped somehow.  We originally allowed for multiple failures 
before we reported the warning message, but it appears that since we 
increased the synchronization interval to 60 seconds the message probably now 
appears after the first failure.  Since your system is recovering you might 
want to change the '60' value in line 161 of the above file to be 120 say, 
and fix the comment on the previous line to match.

HTH, HANW,

- Andrew
-- 
The best FOSS code is written to be read by other humans -- Harold Welte

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System