Pierre Hugues Charbonneau

Pierre-Hugues Charbonneau (nickname P-H) is working for CGI Inc. Canada for the last 10 years as a senior IT consultant. His primary area of expertise is Java EE, middleware & JVM technologies. He is a specialist in production system troubleshooting, root cause analysis, middleware, JVM tuning, scalability and capacity improvement; including internal processes improvement for IT support teams. P-H is the principal author at Java EE Support Patterns.

Core Java
Pierre Hugues CharbonneauJuly 22nd, 2015
1 67
JVM Buzzwords Java developers should understand
This article will share with you a few JVM “buzzwords” that are important for Java developers to understand and remember before performing any…
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Core Java
Pierre Hugues CharbonneauApril 10th, 2014
0 125
ClassNotFoundException: is it slowing down your JVM?
Most Java developers are familiar with the infamous and very common java.lang.ClassNotFoundException. While the sources of this problem are generally…
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Core Java
Pierre Hugues CharbonneauNovember 19th, 2013
3 46
Java VM – Beware of the YoungGen space
As you may have seen from our previous performance oriented articles, a healthy JVM is one of the most important…
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Core Java
Pierre Hugues CharbonneauJuly 12th, 2013
3 73
Java Just-In-Time compilation: more than just a buzzword
A recent Java production performance problem forced me to revisit and truly appreciate the Java VM Just-In-Time (JIT) compiler. Most…
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Core Java
Pierre Hugues CharbonneauJune 15th, 2013
4 350
GC Memory Visualizer Tutorial – Part1
As you may have read from past articles, one of the key Java programmer skills to acquire is your ability…
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Core Java
Pierre Hugues CharbonneauApril 22nd, 2013
0 68
HotSpot GC Thread CPU footprint on Linux
The following question will test your knowledge on garbage collection and high CPU troubleshooting for Java applications running on Linux…
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Core Java
Pierre Hugues CharbonneauMarch 15th, 2013
1 104
OpenJPA: Memory Leak Case Study
This article will provide the complete root cause analysis details and resolution of a Java heap memory leak (Apache OpenJPA…
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Core Java
Pierre Hugues CharbonneauFebruary 8th, 2013
1 124
Java concurrency: the hidden thread deadlocks
Most Java programmers are familiar with the Java thread deadlock concept. It essentially involves 2 threads waiting forever for each…
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Core Java
Pierre Hugues CharbonneauFebruary 5th, 2013
9 721
Java 8: From PermGen to Metaspace
As you may be aware, the JDK 8 Early Access is now available for download. This allows Java developers to…
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