Out of the box AIX is a robust, solid and scalable operating system. However, some changes to the default settings may be necessary in order for customers to realize the best possible performance for their applications based on the applications’ specific characteristics and needs.
This document describes performance considerations, tuning options, existing tools, and diagnostic options that can be used to guide tuning decisions to maximize performance for a given application or workload.
The following performance considerations will be discussed: 32-bit versus 64-bit Java, memory and various page sizes, application scaling, affinity, consolidation, and Java Garbage Collection tuning.
Data has been collected to illustrate the benefits of the following scenarios: 32-bit and 64-bit Java, various page sizes, affinity, and scaling along with existing tools that can be used to guide tuning decisions.