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I occasionally get an email from someone saying "I've blogged such and such ...", or "My article on X is published ...", and the gist of the email is: why haven't I mentioned the blog or article since it's about java performance?

A note from this newsletter's sponsor

I do appreciate you telling me about your blogs and articles as there is no guarantee that I would see them otherwise, but even if your publication is pretty good I can't guarantee that it will get into a newsletter. That's because my trawl generates over a 100 publications every month with something related to Java performance in them. Of these, probably about 30 could go into the newsletter as an article worth having their tips extracted from; and of those 30, I'll only really read about 10 thoroughly. It's all down to time availability - like most of you, there is only one of me and I have only so much time I can put to doing this.

So do indeed send me an email pointing out your article or blog relevant to Java performance, but I must apologize if it doesn't make the newsletter.

Now on with this month's newsletter. We have all our usual Java performance tools, news, and article links. Javva The Hutt writes about his new job search; there's a new cartoon at fasterj Understanding Escape Analysis; and, as usual, we have extracted tips from all of this month's referenced articles.

A note from this newsletter's sponsor

News

Java performance tuning related news.

• Strings in switch are (potentially) back in to the next Java - blog entry also links to the proposal which shows an efficient proposed implementation
• the challenges of more and more multi-core systems
• New Monitoring Capabilities in GlassFish v3. Note the ability to dynamically generate monitoring events from any glassfish class
• Be aware that you could create instances of class even if the constructor disallows it - e.g. of singletons

Tools

Java performance tuning related tools.

• JLM provides monitor hold time accounting and contention statistics on monitors used in Java applications and the JVM itself
• IBM Lock Analyzer for Java
• set of tools that can analyze applications targeted for multicore hardware systems, includes performance and contention analysis tools

A note from this newsletter's sponsor

Articles

• Meet Alex Miller, Author of the Core Java Concurrency Refcard (James Sugrue/DZone)
• Performance Improvement: Understanding (Robert Bogue/Developer.com)
• Mixing long and short lived objects (Kirk Pepperdine/pepperdine)
• The perils of negative scalability (David Dice/Sun)
• Performance tuning considerations in your application server environment (Sean Walberg/IBM)
• Creating Highly-Scalable Components in Java (Zhi Gan, Raja Das, Xiao Jun Dai/InfoQ)

Jack Shirazi

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