Yes I guess we will see plenty of complains in the internet about this Bug in the upcoming days. A nice Monday morning suprise :))
Sebastian 2012/7/2 bob lin <[email protected]> > On 07/02/2012 04:20 PM, [email protected] wrote: > > Hi Bob, > > I found out the root source ARGGG > > It seems like a Bug in the JAVA JVM, > see this Blog post, it fixed my issues: > > http://blog.wpkg.org/2012/07/01/java-leap-second-bug-30-june-1-july-2012-fix/ > > I did not turn on ntp anymore. > > Sebastian > > 2012/7/2 [email protected] <[email protected]> > >> Hi Bob, >> >> I don't know yet. The issue is not resolved yet on our server. >> I will post something to this mailing list as soon as I have found out >> how we were able to solve our issues. Maybe it will help you too. >> >> I think it has something todo with the Java JVM installation/settings. >> You could try out downloading another JVM from the java.com. A Java JVM >> installation is actually an unpacked ZIP file so you can run >> $JAVA_HOME/bin/java DoJavaTest with any Java runtime that you download and >> "install". >> >> Sebastian >> >> >> 2012/7/2 bob lin <[email protected]> >> >>> On 07/02/2012 03:17 PM, [email protected] wrote: >>> >>> Hi Bob, >>> >>> I recently saw something similar on a server ... >>> >>> You should check if there is an issue with Java in general. >>> I don't think that its an OpenMeetings related problem. >>> >>> You could try for example this simple Java Test: >>> http://pastebin.com/DmhcAuVE >>> >>> It should print a Date/Time every 0,5 seconds. >>> I've attached a compiled version of the programm. >>> You can run it using: java DoJavaTest >>> >>> I guess you will see that even with such simple programm your CPU is at >>> 100%. >>> >>> >>> Sebastian >>> >>> >>> 2012/7/1 bob lin <[email protected]> >>> >>>> Dear Developers: >>>> First, thanks for developing such a excellent software. It works fine , >>>> but the cpu load on server side is abnormally high . >>>> >>>> Phenomena : >>>> The Openmeetings works fine on every aspect. But on the server side( a >>>> 16 core system ) , the java process takes 1000% ~ 1100% CPU time, and >>>> about 10~15 kernel irq request ( [ksoftirqd/3] for example ) each takes >>>> 30% , the total load of CPU reachs 2200% . Whether the user is logged in >>>> or not doesn't change the situation. >>>> >>>> System Info : >>>> The openmeetings version is 1_9_1_r4707, The jre version is >>>> jre1.6.0_33/jre1.7.0_5 . I use libreoffice 3.5 . The system is CentOS >>>> 6.2 x86_64 with MySQL Ver 14.14 Distrib 5.1.61. >>>> >>>> I follow the configuration instructions on >>>> https://code.google.com/p/openmeetings/wiki/InstallationCentOS5 >>>> But with some newer version software (Imagemagick, ffmpeg) >>>> >>> >>> >>> >>> -- >>> Sebastian Wagner >>> https://twitter.com/#!/dead_lock >>> http://www.openmeetings.de >>> http://www.webbase-design.de >>> http://www.wagner-sebastian.com >>> [email protected] >>> >>> >>> Yeah , The sample program doesn't even update the time , and CPU is >>> 200%!! , In a single CPU test environment the java environment just >>> functioning normally , Thanks for your advice , and is there any solutions >>> you may advice? >>> >>> >> >> >> -- >> Sebastian Wagner >> https://twitter.com/#!/dead_lock >> http://www.openmeetings.de >> http://www.webbase-design.de >> http://www.wagner-sebastian.com >> [email protected] >> > > > > -- > Sebastian Wagner > https://twitter.com/#!/dead_lock > http://www.openmeetings.de > http://www.webbase-design.de > http://www.wagner-sebastian.com > [email protected] > > > It works ! Thanks ! > > Very interesting . Now it seems that the jre is comfused by 23:59:60 , and > require hardware clock time endlessly , > Thus can explain the high load of both the java process and the kernel irq > . > > -- Sebastian Wagner https://twitter.com/#!/dead_lock http://www.openmeetings.de http://www.webbase-design.de http://www.wagner-sebastian.com [email protected]
