Brad, Focus in on the Java run time parms. My intiital guess is a heap stack issue. Also you might want to ensure that the GC is active. WebLogic is NOT shipped with default parms that would be zLinux friendly. In porting Linux apps to zLinux I always had to tweek it. There is no such thing as Linux is Linux is Linux. Sound good but ain't so.
Richard (Gaz) Gasiorowski SA&E Solution Architect CSC 3170 Fairview Park Dr., Falls Church, VA 22042 845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. From: Barton Robinson <bar...@vm1.velocity-software.com> To: LINUX-390@vm.marist.edu Date: 03/04/2010 11:10 AM Subject: Re: Poor WebLogic Performance IF you have a good performance monitor, you would know exactly what process on what server is using CPU. With zVPS (ESALPS), on one screen, you can see ALL the top processes across your entire Linux farm, with one PFK, you can sort them by cpu. Knowing where your cpu is going means you can do capacity planning, solve problems, and know when things change. Running without a good performance monitor is is like driving a car across the rockies without a gas gauge, you will run out of gas, you just don't know if it will be at a good time or a bad time. Carson, Brad wrote: > We've begun working with Oracle WebLogic running on RHEL under z/VM. We are seeing very poor performance with these guests and z/VM is constantly running at 100% CPU when these guests are active. It looks to us that something in any of our WebLogic guests is spinning on CPU. Response time in the guest is poor and WebLogic response is worse. > > Here are some of the particulars: > z/VM is at 5.4.0 > RHEL is at 5.3 > IBM Java (in the guests) is at 1.6.0 > WebLogic is 10.3 (I've been told) > > Any assistance in trying to get to the bottom of this issue would be greatly appreciated. > > > Brad S. Carson > Mainframe Technical Support > Laboratory Corporation of America > Phone: 336-436-8294 > email: cars...@labcorp.com<mailto:cars...@labcorp.com> > Please ignore company inserted HIPAA disclaimer below > > ----------------------------------------- This e-mail and any attachments may contain CONFIDENTIAL information, including PROTECTED HEALTH INFORMATION. If you are not the intended recipient, any use or disclosure of this information is STRICTLY PROHIBITED; you are requested to delete this e-mail and any attachments, notify the sender immediately, and notify the LabCorp Privacy Officer at privacyoffi...@labcorp.com or call (877) 23-HIPAA. > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
