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Very strange. None of the rhel 6.3's I have are showing this at
all. Then again, they are all VMs so things are quite different.<br>
<br>
I have not seen it on any of the Centos 6.3 physical systems
either. Keep us posted.<br>
<br>
Take a B meson counter and turn it on. You may be having an issue
with time reversal asymmetries :-)<br>
<br>
<a class="moz-txt-link-freetext" href="http://blogs.nature.com/news/2012/11/particle-physicists-confirm-arrow-of-time-for-b-mesons.html">http://blogs.nature.com/news/2012/11/particle-physicists-confirm-arrow-of-time-for-b-mesons.html</a><br>
<br>
<br>
On 11/20/2012 11:26 AM, Lightner, Jeff wrote:<br>
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<p class="MsoNormal">Last week I noticed the time on two new
servers we installed with RHEL6.3 had jumped forward even
though we had ntpd running and use local time sources here. I
reconfigured ntp then with RedHat’s GUI for same then verified
the hwclock was updated (and not using UTC) then for good
measure rebooted both to make sure the system time was still
correct.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Yesterday morning I had set myself a
reminder to re-verify and time was still OK on both servers.
I again rebooted to verify the system time was set properly on
boot.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We were installing new software and it
suggested adding the “-x” option to ntpd which we did and
restarted ntpd. I again verified time was still ok after
that.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Last night I noticed that at some point the
time had again leapt forward as it had last week. This was
by about 9 hours and 14 minutes. It appears ntpd aborted
(presumably due to the –x option that prevents skewing) due to
large gap in time (720000).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This morning both servers are ahead by
about 20 hours on system time even though ntpd has not been
running since yesterday’s abort.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve looked through all cron and anacron
files and can’t find anything that would be setting time
automatically.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">A ticket has been opened with RedHat
support but I’m wondering if anyone has seen something like
this and has any ideas what might be causing it or how to
prevent it. We’ll be running cluster software on these two
nodes so having time synchronizes is especially important.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We do run many other RHEL (4, 5 & 6)
servers as well as HP-UX and Windows servers and workstations
all using our internal time devices as the NTP time source so
I’m mystified as to why these two servers have the issue.<o:p></o:p></p>
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