List/Grid Tag Archives: JVM

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Testing JVM server-side JavaScript with Jasmine, Spock and Nashorn

JavaScript usage is not limited to client-side code in browser or NodeJS powered server-side code. Many JVM based projects are using it as internal scripting language. Testing this ...
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cjmx: A command-line version of JConsole

JConsole is a nice tool when it comes to monitoring a running Java application. But when it is not possible to connect to a JVM with JConsole directly (due to network restrictions for ...
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Own your heap: Iterate class instances with JVMTI

Today I want to talk about a different Java that most of us don’t see and use every day, to be more exact about lower level bindings, some native code and how to perform some small ...
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On heap vs off heap memory usage

Overview I was recently asked about the benefits and wisdom of using off heap memory in Java. The answers may be of interest to others facing the same choices. Off heap memory is nothing ...
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Self-healing JVM

This post is an example about an application where the first solution to each and every IT problem – “have you tried turning it off and on again” – can backfire and do more ...
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Java performance tuning survey results (part IV)

This is the last post in series where we analyze the results of the Java Performance Tuning Survey we conducted in October 2014. If you have not read the first posts, I recommend to ...
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Java performance tuning survey results (part III)

This is the third post in a series where we analyze the results of a survey conducted in October 2014. If you have not already done so, I recommend to start with the first two posts ...
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Java performance tuning survey results (part II)

This is a second post in series where we analyze the results of the performance tuning survey conducted in October 2014. If you have not read the first part yet, we recommend to start ...
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But that’s impossible, or finding out that the JIT has broken your code.

Every now and then you look at some code and think that it cannot be possibly be wrong. Once you have ruled out a simple programmer screw up / enemy action in code (Make sure you read ...
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Java performance tuning survey results (part I)

We conducted a Java performance tuning survey during October 2014. The main goal of the survey was to gathering insight into Java performance world to improve the Plumbr product offering. ...
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