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HPROF – Memory leak analysis tutorial

This article will provide you with a tutorial on how you can analyze a JVM memory leak problem by generating and analyzing a Sun HotSpot JVM HPROF Heap Dump file. A real life case ...
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Java Thread CPU analysis on Windows

This article will provide you with a tutorial on how you can quickly pinpoint the Java Thread contributors to a high CPU problem on the Windows OS. Windows, like other OS such as Linux, ...
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Using the final keyword on method parameters

After some own confusion which specific meaning final declared method parameters have this blog entry will try to clarify this. At least the final keyword on method parameters can ...
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Java Concurrency with ReadWriteLock

Writing multithreaded java applications is not a piece of cake. Extra care must be taken because bad synchronization can bring your application to its knees. The JVM heap is shared ...
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Java Enum puzzler

Let’s suppose we have the following code:enum Case { CASE_ONE, CASE_TWO, CASE_THREE; private static final int counter; private int valueDependsOnCounter; ...
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Lucene Overview Part One: Creating the Index

Introduction I’ve recently been working with the open source search engine Lucene. I’m no expert, but since I have just pored through some rather sparse documentation ...
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Fork and join in Java 7 – JSR 166 concurrency utilities

One of the most interesting improvements of Java 7 is the better support of concurrency. With JSR 166 Concurrency Utilities we get some very helpful improvements of concurrency. From ...
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IBM JVM tuning – gencon GC policy

This article will provide you detail on an important Java Heap space tuning consideration when migrating from a Java VM such as HotSpot or JRockit to the IBM JVM. This tuning recommendation ...
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Threading stories: about robust thread pools

Another blog of my threading series. This time it’s about thread pools, robust thread pool settings in particular. In Java thread pools are implemented by the ThreadPoolExecutor ...
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JRockit jrcmd tutorial

This article will provide you an overview and tutorial on how you can perform an initial analysis and problem isolation of a JRockit Java Heap problem using the jrcmd tool. A deeper ...
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