Speaker Topics - No Fluff Just Stuff
NFJS2025

Garbage-collector-friendly programming

To many developers, garbage collection is black magic. Accordingly, there are is a lot of conflicting advice about what is good or bad for the garbage collector. In this talk, I look at how garbage collection is implemented in the HotSpot VM, and techniques for writing programs that exhibit good garbage collection behavior. Surprisingly, many of these techniques coincide with writing good, clean code.

This presentation covers:

  • Basics of garbage collection in HotSpot
  • Where the performance costs are in garbage-collected systems
  • Coding techniques for reducing GC costs
  • Finalization
  • Techniques for tracking down “memory leaks”

Brian Goetz

About Brian Goetz

Brian Goetz has been a professional software developer for 20 years. He is the author of over 75 articles on software development, and his book, Java Concurrency In Practice, was published in May 2006 by Addison-Wesley. He serves on the JCP Expert Groups for JSRs 166 (concurrency utilities), 107 (caching), and 305 (annotations for safety analysis). He is a frequent presenter at JavaOne, OOPSLA, JavaPolis, SDWest, and the No Fluff Just Stuff Software Symposium Tour. Brian is a Sr. Staff Engineer at Sun Microsystems.

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