IBM Power7 Optimization And Tuning Manual page 176

JVM tunables: Heap sizing, garbage collection (GC) policy, page size, and so on
WebSphere Application Server related settings for a WebSphere Application
Server process
The guidance is based on Java tuning preferred practices. The criteria that are used to
determine the guidance include the relative importance of the Java application, machine
usage (test/production), and the user's expertise level.
Figure B-4 is a snapshot of Java and WebSphere Application Server recommendations from
a sample run, indicating the best JVM optimization and WebSphere Application Server
settings for better results, as per Java preferred practices. Details about the metrics can be
obtained by expanding each of the metrics. The output of the run is a simple XML file that can
be viewed by using the supplied XSL viewer and any browser. The Java Performance Advisor
can be found at:
https://www.ibm.com/developerworks/wikis/display/WikiPtype/Java+Performance+Adviso
r
Figure B-4 Java Performance Advisor
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