Leading the Portal Server Performance Team puts me in contact with many of our customers at all stages of their portal implementations.
In many cases, I see that performance tests on site are - at least partially invalid- because the system has not been completely tuned. Admittedly, tuning portal server for performance involves many steps and includes the tuning of all underlying components, among them the web container, directory server and access manager. In every one of those cases, performance improves dramatically as soon as the server is appropriately tuned.
So I just want to advertise a bit the tuning scripts that we ship with portal. These scripts make tuning trivial and take care of all the steps. Our main tuning script, perftune
is built on top of the access manager tuning script called amtune
The scripts are well documented, if a bit hard to find. The important part though is that they are easy to run. The only parameters required are the passwords of the services touched. Definitely worth a read.