Check out the WebSphere Application Server Performance Information page (one of the More Places to Learn about WebSphere). It has links to the Tuning performance section in the various InfoCenters.
|In a comment, a reader asked for performance information on WAS 6.0 64-bit. The performance page lists two articles (which actually seem to be the same):|
Also see Meet the experts: Stacy Joines and Gary Hunt on WebSphere performance. One of the questions is "Where can I get more information on 64-bit WAS performance?"
For details on the 64-bit platforms supported, see WebSphere Application Server System Requirements and WebSphere Application Server V6.0.2 detailed system requirements.