JVM
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Core Java
Busting PermGen Myths
In my latest post I explained the reasons that can cause the java.lang.OutOfMemoryError: PermGen space crashes. Now it is time…
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Core Java
What is a PermGen leak?
What follows is a practical introduction to a specific type of memory problems in Java applications. Namely – we will…
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Core Java
How much memory do I need
What is retained heap? How much memory will I need? This is a question you might have asked yourself (or…
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Core Java
When using direct memory can be faster
Overview Using direct memory is no guarantee of improving performance. Given it adds complexity, it should be avoided unless you…
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Core Java
Java Heap Dump: Are you up to the task?
If you are as much enthusiasm as I am on Java performance, heap dump analysis should not be a mystery…
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Core Java
IBM AIX: Java process size monitoring
This article will provide you with a quick reference guide on how to calculate the Java process size memory footprint…
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Core Java
Compact Off-Heap Structures/Tuples In Java
In my last post I detailed the implications of the access patterns your code takes to main memory. Since then…
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Core Java
JavaOne 2012: Diagnosing Your Application on the JVM
It was worth attending Staffan Larsen‘s (Oracle Java Serviceability Architect) presentation ‘Diagnosing Your Application on the JVM‘ (Hilton Plaza A/B)…
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Core Java
Warming Up Your JVM – Superfast Production Servers and IDEs
A couple of months ago I was reading up on Complex Event Processing in Java and ways to achieve low…
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