List/Grid Tag Archives: GC

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G1 vs CMS vs Parallel GC

This post is following up the experiment we ran exactly a year ago comparing the performance of different GC algorithms in real-life settings. We took the same experiment, expanded ...
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What Garbage Collector are you using?

Our research labs are humming at full speed. With the recent injection of capital, we can only warrant that the pace at which we keep innovating will only increase. Part of the research ...
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5 Coding Hacks to Reduce GC Overhead

In this post we’ll look at five ways in which we can use efficient coding to help our garbage collector spend less CPU time allocating and freeing memory, and reduce GC overhead. ...
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Java Garbage Collection Distilled

Serial, Parallel, Concurrent, CMS, G1, Young Gen, New Gen, Old Gen, Perm Gen, Eden, Tenured, Survivor Spaces, Safepoints, and the hundreds of JVM startup flags. Does this all baffle ...
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Garbage Collection in Java (4)

G1: Garbage First The G1 collector is the latest collector to be implemented in the hotspot JVM. Its been a supported collector ever since Java 7 Update 4. Its also been publicly stated ...
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Garbage Collection in Java (3)

This follows on from my previous two garbage collection blog posts:Overview of GC in Hotspot. Parallel Garbage Collectors.Concurrent Mark Sweep The parallel garbage collectors in ...
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Garbage Collection in Java (2)

Parallel Scavenge Today we cover how Parallel GC works. Specifically this is the combination of running a Parallel Scavenge collector over Eden and the Parallel Mark and Sweep collector ...
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Garbage Collection in Java (1)

This is the first in a series of posts about Garbage Collection (GC). I hope to be able to cover a bit of theory and all the major collectors in the hotspot virtual machine over the ...
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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 to understand and assess the health of the JVM such as the Java heap memory ...
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Garbage Collection Analysis of PCGen

Introduction I decided to combine two software loves of mine and perform some analysis on PCGen, a popular Java based open source character generator for role-playing games. I used ...
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