I've been following this on Server Fault today: http://serverfault.com/q/403732/13325 provides the full explanation and post-mortem.
Some of my EL6 systems are showing abnormally-high loads. -- Edmund White ewwh...@mac.com On 6/30/12 9:27 PM, "Brian Wheeler" <bdwhe...@indiana.edu> wrote: >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. >>>> >>>> _______________________________________________ >>>> rhelv6-list mailing list >>>> rhelv6-list@redhat.com >>>> https://www.redhat.com/mailman/listinfo/rhelv6-list >>> >>> >>> _______________________________________________ >>> rhelv6-list mailing list >>> rhelv6-list@redhat.com >>> https://www.redhat.com/mailman/listinfo/rhelv6-list >> >> >> _______________________________________________ >> rhelv6-list mailing list >> rhelv6-list@redhat.com >> https://www.redhat.com/mailman/listinfo/rhelv6-list > > >_______________________________________________ >rhelv6-list mailing list >rhelv6-list@redhat.com >https://www.redhat.com/mailman/listinfo/rhelv6-list _______________________________________________ rhelv6-list mailing list rhelv6-list@redhat.com https://www.redhat.com/mailman/listinfo/rhelv6-list
