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Performance

In this post I introduce Samplr: an open source, intelligent sampling profiler that can be embedded in any Java application for automatic identification of performance bottlenecks Tools of the Trade If you read the Developer Power story in the July/August issue of Oracle Java Magazine, you already know that I love VisualVM. It is the best tool I know for inspecting the inner workings of a...
on Aug 6, 2012

J2EE

One of the exciting things about teaching is the fact no matter how well you prepare for a class, events will always surprise you.Yesterday I was caught by surprise in the middle of a class by what seemed like a global Glassfish admin console outage. I was teaching my Software Architecture students at IGTI how to change the default maximum thread pool size for the HTTP listener in Glassfish 3.0.1...
on Nov 10, 2010

NetBeans

One of the not-so-great things about developing Java web applications is the fact that, after a few redeployments, sooner or later the web container JVM needs to be restarted due to Out Of Memory errors. This has been true in every combination of development environment and web server I have used so far, and until last week Netbeans 6.8 + Glassfish 3.0.1 was no exception. The cause of Out Of...
on Jun 10, 2010