Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  <2017 Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  <2017
<== Date ==> <== Thread ==>

Subject: Re: time stamp on vxWorks jumping to the future
From: Michael Davidsaver <mdavidsaver@gmail.com>
To: Dirk Zimoch <dirk.zimoch@psi.ch>
Cc: tech-talk@aps.anl.gov
Date: Fri, 24 Nov 2017 10:04:27 -0600
On 11/24/2017 01:50 AM, Dirk Zimoch wrote:
> On 20.11.2017 11:10, Dirk Zimoch wrote:
>> Hello everyone,
>>
>> From time to time we see a strange problem with the timestamp on our
>> vxWorks 5.5 IOCs. The timestamp jumps to the future (e.g. 2071). I have
>> seen it happen on EPICS 3.14.12 as well as 3.14.8. Not all but more than
>> one IOC seem to be affected from such an incident. Not all jump to the
>> same future time.
>>
>> Has anyone else seen this effect?
>> Can a corrupted NTP message cause this?
>>
>> Dirk
>>
> 
> Example:
> ZPSAF15-VME > NTPTime_Report 1
> NTP driver is synchronized with server
> Syncronization interval = 60.0 seconds
> Last synchronized at 2017-11-24 08:45:29.149741
> OS tick rate = 100 Hz (nominal)
> Measured tick rate = 100.024 Hz
> NTP Server = 129.129.190.1
> value = 0 = 0x0
> ZPSAF15-VME > date
> 2073/05/20 11:20:31.396217
> value = 27 = 0x1b
> 
> Time jumped this night, only on this IOC.

Are there other time providers in this IOC?  What does
"generalTimeReport 5" show?

Replies:
Re: time stamp on vxWorks jumping to the future Dirk Zimoch
References:
time stamp on vxWorks jumping to the future Dirk Zimoch
Re: time stamp on vxWorks jumping to the future Dirk Zimoch

Navigate by Date:
Prev: Re: time stamp on vxWorks jumping to the future Dirk Zimoch
Next: EPICS Java 7.0.0-rc1 ready for testing Ralph Lange
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  <2017
Navigate by Thread:
Prev: Re: time stamp on vxWorks jumping to the future Dirk Zimoch
Next: Re: time stamp on vxWorks jumping to the future Dirk Zimoch
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  <2017
ANJ, 27 Nov 2017 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·