onsdag 14 augusti 2013

Garbage Collection visualization

I really like the old disk defragmenter program in Windows. The small blocks where moved all around and I could watch it for hours (well, minutes at least).

The JVM Garbage Collection is something of a black-box which sometimes just makes everything go to halt. To get a better understanding of how it is struggling with my code I wanted something like the disk defragmenter, and, Eureka! Netflix has made their own tool, gc.viz (blogpost), and also logs all the garbage collection closely in their production systems. Interesting indeed!

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