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I need help. No, that's not a comment on my state of mind. I need two Java performance engineers to work with me. This is a great opportunity to work in Java performance at a top tier global investment bank on a contract basis (initial 6 month contract, market rates), in a fun environment with challenging tasks. One opening is in London (in the city), the other in Stamford, Connecticut (about 40 mins commute from NY). The project is a live complex trading system with many different types of Java processes and tight time contraints. Part of the role involves troubleshooting - apart from the standard issue that performance bugs can be difficult to track down, the system strains the JVM and has a tendency to expose JVM bugs and the performance team are usually best placed to identify these.

Ideally you will have used a Java profiler; had experience of tuning code; and of tuning a JVM; monitored a JVM at the Java level and at the OS level on Windows and Unix; and know your way around thread stack traces in a highly concurrent environment (you'll have seen and diagnosed deadlocks, livelocks/wait leaks, other concurrency issues); understand JDBC/SQL profiling; and had some capacity management experience. (Of course, I don't expect ideal, good enough is fine.)

A note from this newsletter's sponsor

If you are interested in these openings, please send your CV to ldnjob1@JavaPerformanceTuning.com (for the London opening) or stmjob1@JavaPerformanceTuning.com (for the Stamford opening) where it will get prompt attention. Please note these openings require you to already have the requisite permission to work in the location (UK/USA), so please don't apply if you don't have that working permit.

Javva the Hutt is back, telling us all about what he was doing while he was away. For those of you who don't know Javva, or want a reminder, we've added a page for you to access all his old columns here. Now read on for our other news, this months selected articles (don't miss these, every one is a gem), tools, and of course our many new extracted performance tips

A note from this newsletter's sponsor

News

Java performance tuning related news.

• Why you want to use JavaSpaces [personally, I've been advocating blackboard architectures for 15 years, so I also recommend building your app around JavaSpaces]
• Java Kernel for Java 7. Will it be too little to late? We'll see.
• 1.6 looks faster and has nice usability features
• Javolution StAX faster than the Java 1.6 distribution StaX
• Excelsior JET 4.5 Shrinks Java App Downloads

Tools

Java performance tuning related tools.

• JDbMonitor tool to monitor & analyse database performance for any Java application
• jKool J2EE Performance Monitoring Family of Products
• Glassbox (open source) troubleshooting agent for Java applications, can automatically diagnose common problems.
• MG4J (Managing Gigabytes for Java) is a free full-text indexing system for large document collections written in Java.

A note from this newsletter's sponsor

Articles

• Interview With Kirk Pepperdine (jeroen borgers/Xebia)
• Executing tasks in threads (Brian Goetz, Tim Peierls, Joshua Bloch, Joseph Bowbeer, David Holmes, Doug Lea/Javaworld)
• A Thread Dump Bean JSP in Java 5 (Heinz Kabutz/Java Specialists' Newsletter)
• Managing Amazon.com's Systems (Peter Bodik, Armando Fox, Michael Jordan, David Patterson, Ajit Banerjee, Ramesh Jagannathan, Tina Su, Shivaraj Tenginakai, Ben Turner, Jon Ingalls /Berkeley University)
• Why -Xbatch works differently in Java SE 6.0 (Steve Goldman/Sun)

Jack Shirazi

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