Most Sun articles on Java memory management are dense and hard to read. This month's Better Software magazine on offers a 5 page article at a more intermediate level that makes digesting this topic a lot easier. The article, Your Mom Doesn't Work Here - Cleaning up with Java Memory Management, by Alan Berg, provides a clear description of how to look for memory leaks in Java applications and the performance impact for various GC algorithms. It also provides an introduction to the JMeter stress testing tool (with additional information in the print magazine not available online)