From Programmer 97-things
Kirk Pepperdine works as an independent consultant offering Java performance-related services. Prior to focusing on Java, Kirk developed and tuned systems written in C/C++, Smalltalk, and a variety of other languages. Kirk has written many articles and spoken at several conferences on the subject of performance tuning. He helped evolve http://www.javaperformancetuning.com as a resource for performance tuning tips and information.