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I continue to be surprised at the potential performance gains possible from future implementations of the JVM. Looking at the details listed in the first two news items we cover, there are still gains possible from the lifecycle of objects and scaled use of JVMs.

I'm surprised because Java is already as fast as any language available - only your design and non-optimal implementations restrict your application from being as fast as possible. And for those cases, Java already boasts the best sets of tools available in any language for probing your application in production or development to find those bottlenecks. So maybe you can see why I'm surprised; but surprises like that are nice, I'm happy to have more of them thrown at me any time.

A note from this newsletter's sponsor

In the newsletter we list our usual raft of articles, news and tools, and new performance tips extracted in concise form. In particular, I would wholeheartedly recommend you check out chapter 5 of Scott Delap's book which implements an automatic detector of Swing threading violations - a tool that every GUI developer should include in their everyday development suite.

News

Java performance tuning related news.

• Possibly a glimpse into the future of Sun's JVM structure and GC optimizations
• The Multi-Tasking Virtual Machine
• Planned 6.0 desktop improvements
• Javolution can help reduce memory - but at a maintenance cost.
• The Java Language Specification, Third Edition is now available in a pre-publication PDF release. Includes the new Java Memory Model Specification (chapter 17).
• The NetBeans Profiler team is looking for your feedback to help plan future releases.
• Who should be profiling - some interesting points.
• Gartner Report on J2EE Application Server Management software.
• Sun Appserver SPEC benchmark.
• BEA SPECjAppServer2002 benchmark
• Azul Java compute servers.

A note from this newsletter's sponsor

Tools

• Azul Virtual Machine redirects all of the Java workload processing from a conventional server enabling applications to transparently tap into high capacity pools of Azul Compute Appliances.
• framework to enable dynamically configurable distribution of Java objects.
• postmortem memory leak analysis tool
• XML pipeline framework to work with large datasest in minimal memory
• IBM Pattern Modeling and Analysis Tool for Java Garbage Collector

Recent Articles

• Deadlock at classloading time (Author Heinz Kabutz/javaspecialists)
• Java Desktop Live Chapter 5: Swing Threading (Author Scott Delap/SourceBeat)
• Object Caching With AOP (Author Srini Penchikala/TheServerSide)
• The Train architecture for dynamically batching user requests (Author Edward Salatovka/JavaWorld)
• How to load drop-down list values at application start-up time (Author Srinivasa Karanam/IBM)

Jack Shirazi

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