Recommended Parameters for Java 7.00

[Former Member]

Dear All,

Could someone please kindly advise me the best recommended parameter values for the below.I kindly would appreciate it.

Thank you.

Baseline:-

Server

-verbose:gc

-XX:SurvivorRatio=2 -XX:TargetSurvivorRatio=90

-XX:+UseParNewGC

-XX:+HandlePromotionFailure

-XX:+PrintGCTimeStamps

-XX:+PrintGCDetails

-XX:+UseTLAB

-XX:SoftRefLRUPolicyMSPerMB=1

-XX:ReservedCodeCacheSize=64M

-XX:CodeCacheMinimumFreeSpace=2M

-Djava.awt.headless=true

-Djava.security.policy=./java.policy

-Djco.jarm=1

-Dorg.omg.CORBA.ORBClass=com.sap.engine.system.ORBProxy

-Dorg.omg.CORBA.ORBSingletonClass=com.sap.engine.system.ORBSingletonProxy

-Dorg.omg.PortableInterceptor.ORBInitializerClass.com.sap.engine.services.ts.jts.ots.PortableInterceptor.JTSInitializer

-Djavax.rmi.CORBA.PortableRemoteObjectClass=com.sap.engine.system.PortableRemoteObjectProxy

-Dsun.io.useCanonCaches=false

-Djava.security.egd=file:/dev/urandom

Disptacher

-verbose:gc

-Djava.security.policy=./java.policy

Memory:-

-Xmx4096m

-Xms4096m

-XX:NewSize=682m -XX:MaxNewSize=682m

-XX:MaxPermSize=1024m -XX:PermSize=1024m

Disptacher

-Xms512M

-Xmn70M

-Xgcpolicy:gencon

-verbose:gc

- Xdump:system:events=systhrow,filter=java/lang/OutOfMemoryError,request=exclusive+prepwalk

Regards,

John

[Former Member]

Ever heard of SAP notes? Try the search function and a tremendous amount of information will be available to you....

Kind regards,

Mark

[Former Member]

Hi Mark,

Definitely I know OSS Notes. I asked if anyone who has configured the parameters before would be able to help me with the values.If you have not configured before you didnt have to answer this question.

Thank you anyway.

Regards,

John

[Former Member]

Hi,

Tuning is NOT just copying values from an other unknown system from the internet...

We don't know your system, its hardware, its load, its users, its release,etc....

Regards,

Olivier

[Former Member]

John,

This depends on your OS/hardware etc. But you may want to refer to the following note to start with.

Note 723909 - Java VM settings for J2EE 6.40/7.0

Hope this helps.

Manoj

[Former Member]

Hi Manoj,

Thank you for the notes.

Regards,

John