JVM
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Core Java
JVM PermGen – where art thou?
This post covers some basics of JVM memory structure and quickly peeks into PermGen to find out where it has disappeared since advent…
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Core Java
Memory leaks – measuring frequency and severity
This post is part of our open culture – we continue sharing insights from our day-to-day work. This time we…
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Core Java
Garbage Collectors – Serial vs. Parallel vs. CMS vs. G1 (and what’s new in Java 8)
The 4 Java Garbage Collectors – How the Wrong Choice Dramatically Impacts Performance The year is 2014 and there are…
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Core Java
Daemonizing JVM-based applications
Deployment architecture design is a vital part of any custom-built server-side application development project. Due to it’s significance, deployment architecture…
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Core Java
A little bit on the JVM and JIT
As you might be aware, the JVM (Java Virtusal Machine) is what makes it possible for Java to adhere to…
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Core Java
MineCraft and off heap memory
Overview MineCraft is a really good example of when off heap memory can really help. The key requirements are: The…
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Core Java
Out of memory: Kill process or sacrifice child
It is 6 AM. I am awake summarizing the sequence of events leading to my way-too-early wake up call. As…
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Core Java
OutOfMemoryError on overprovisioned heap
Why am I getting the OutOfMemoryError when allocating a data structure that should happily fit within the heap I have…
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Core Java
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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