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Kirk Pepperdine

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.

 

Articles

Kirk Pepperdine on Java Performance Tuning
Kirk Pepperdine talks about Java performance tuning in this java.net Community Corner 2009 podcast, recorded at JavaOne.

Weblogs

Is there a difference between load and performance testing

Today I decided it was past time to reorganize the slides in the performance testing section of the course. I added a number of new diagrams and charts to help...

Using Wordle as a Profiler

I mentioned the idea to use Wordle as an execution profiler while presenting the profiling section of my performance tuning course in Paris last December. The idea was seeded by presentation that...

Is setting -Xmx==-Xms still considered harmful?

One of the old bits of tuning advice given when Java memory management was not as tall as it it today was to set max heap to min heap. After all, we don't really want the JVM messing around with...

Virtualization is still a performance drag

Just wrapped up my last performance tuning course for this year and for...

Defect Driven Design Makes a Comeback

 In 1996, a group that I was working with devised a...

A little tool to help with Java regular expressions

 Over the last few weeks I've been working Java regular expressions into a couple of applications. After a couple of rounds with trying to sort out regular expression syntax I hacked together...

Solution to Performance Puzzler with a Stacktrace

It’s after JavaONE and as promised, here is the answer to the performance puzzler with a stack trace. But...

The Mysterious Phantom Reference

I talk about java.lang.ref.* in my performance tuning course because these things (along...