WebSphere Portal and Lotus Web Content Management 6.1.x Performance Tuning Guide

This guide provides a basis for parameter and application tuning for IBM® WebSphere® Portal for Multiplatforms Version 6.1.X. Remember that both tuning and capacity are affected by many factors, including the workload scenario and the performance measurement environment. For tuning, the objective of this paper is not to recommend that you use the values we used when measuring our scenarios, but to make you aware of those parameters used in our configuration. When tuning your individual systems, it is important to begin with a baseline, monitor the performance metrics to determine if any parameters should be changed and, when a change is made, monitor the performance metrics to determine the effectiveness of the change.

This updated version of the tuning guide for WebSphere Portal 6.1/6.1.0.X. This update includes newly added tuning sections for z/OS, Solaris, Oracle and much more.

Performance tuning overview

Tuning a WebSphere Portal environment involves tuning and configuring the various systems and components of the environment. This chapter discusses some general concepts and details the specifics of the configuration used in our measurement environments. These specifics entail:

• Configuring the application server and the resources defined for that application server
• Tuning the database(s) and database server
• Tuning the directory server and its database
• Tuning the web server and/or proxy server
• Tuning the operating system and network
• Tuning the WebSphere Portal services

When tuning your individual systems, it is important to begin with a baseline, monitor the performance metrics to determine if any parameters should be changed and, when a change is made, monitor the performance metrics to determine the effectiveness of the change.

In addition to the tuning changes we made in our measurement environments, there are some additional tuning options available which can improve performance in certain circumstances; these will be discussed in a separate section.

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