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2.11.1 Tuning the disk cache
There are several custom properties for the JVM available to tune the disk cache1.
All custom properties can be set using the following steps:
1. In the Administrative Console, select Servers Æ Application servers Æ <AppServer_Name> Æ Java and Process Management Æ Process Definition Æ Java Virtual Machine Æ Custom Properties Æ New.
2. Enter the Name of the custom property.
3. Enter a valid value for the custom property.
4. Save your changes and restart the application server. 1WebSphere Application Server v5.0.2.18, 5.1.1.12 and 6.0.2.17 include APAR PK13460: "DISK CACHE PERFORMANCE, GARBAGE COLLECTION, ADDITIONAL PMI MATRIX AND CACHE POLICY ENHANCEMENTS" which should be installed. The APAR is found at http://www.ibm.com/support/docview.wss?rs=180&uid=swg1PK13460