The portal performance and tuning sweet spot
There are a lot of knobs and switches in the WebSphere Portal and Application Server software stack that you can play with in the process of tuning the environment. We provide guidance and recommendations of what to pay attention to through our Performance and Tuning Guide, but the fact is that what actual values work best for you depends highly on what type of applications you run in Portal and the size and activity of your user population. The only way I know of to accurately arrive at the correct set of tuning values is to follow this basic testing methodology: