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Same Shared Class Cache (SCC) name for DMGR and ODRServer causes high variance in the Java ODR benchmark using Java 7.0

Troubleshooting


Problem

When ODRServer is installed on the same server with the Dmgr, performance variation is observed:

Cause

Shared Class Cache is shared between DMGR & ODRServer and it is causing the ODRServer to perform poorly.

Resolving The Problem

Create a new Shared Class Cache for the ODR Server .

1.) Go to the ODRServer "Generic JVM arguments" section on the JVM page from the Admin console. Watch the demo in the following developer works article to assist you in accessing the JVM page: http://www.ibm.com/developerworks/offers/lp/demos/summary/WASv8_ISC_JVMdemo.html 
2.) Set a new Shared Class Cache name for the ODRServer.
Syntax: -Xshareclasses:name=<cachename> (e.g. -Xshareclasses:name=ODRServerSCC)

3.) Restart the ODRServer.

When the server is restarted, the ODRServer will pick up the new Shared Class Cache.

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Document Information

Modified date:
15 June 2018

UID

swg21965655

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