Sorry for the plethora of replies. Strike the RHEL5 case -- it must
have been hit by something else when I was doing my testing -- it seems
to have calmed down now.
Brian
On 06/30/2012 10:24 PM, Brian Wheeler wrote:
I should add that I have a RHEL5 box which got the leap second and
snmp is reporting it is using 100% cpu but has a paltry loadavg of 3,
so it may be affected as well.
Brian
On 06/30/2012 10:18 PM, Brian Wheeler wrote:
Yes, some of my machines are going crazy. I've found that rebooting
them seems to work around it...
Brian
On 06/30/2012 10:17 PM, David Coulson wrote:
Most of my RHEL6 systems running Java applications went nuts when
the leap second was added:
[root@rhtsutility02 stuff]# ssh rhesdevwesb01 grep UTC
/var/log/messages
Jun 30 19:59:59 rhesdevwesb01 kernel: Clock: inserting leap second
23:59:60 UTC
Output of sar during interval in question
07:59:01 PM all 0.12 0.00 0.20 0.00 0.00
99.68
08:00:07 PM all 8.18 0.02 4.14 0.00 0.00
87.66
08:01:07 PM all 70.08 0.00 29.92 0.00
0.00 0.00
08:02:07 PM all 69.49 0.00 30.51 0.00
0.00 0.00
08:03:07 PM all 69.61 0.00 30.39 0.00
0.00 0.00
08:04:07 PM all 69.76 0.00 30.24 0.00
0.00 0.00
I've RHEL4 and RHEL5 systems running the same apps, same JVM, same
J2EE (mostly WebSphere), and they were all fine.
A couple of my RHEL6 boxes didn't log the 'inserting leap second'
dmesg entry, and they did not exhibit an issue - Not sure why they
did not log it, since they are all using the same NTP clock sources.
Anyone else see this? I'm going to grab a bunch of sosreports and
get a case open, but wanted to see if it was something unique to my
environment.
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