Sun Java System Application Server Enterprise Edition 8.1 2005Q2 Performance Tuning Guide

Thread Count

Thread Count determines the number of threads in the Keep Alive subsystem. Adjust this setting to be a small multiple of the number of processors on the system. For example, a two-CPU system can have two or four keep-alive threads.

The default is one. Do not change the default for a server with a small number of users and Max Connections.