Wednesday, July 31, 2013

Extreme performance on the JVM: Lessons learned while making a superfast code coverage engine

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Extreme performance on the JVM: Lessons learned while making a superfast code coverage engine - Eirik Bjørsnøs from Roots conference on Vimeo.

Abstract


Have you ever used a coverage tool like Cobertura and seen how it makes your code run a lot slower? That's because coverage tools add code to each and every line of your code. So in many ways code coverage tools are among the most performance sensitive pieces of code out there.

In this talk, I'll present my experiences analyzing what makes Cobertura slow. I'll show you the tricks I used to create a new code coverage engine which is orders of magnitude faster. The results should be useful for anyone looking to maximize their performance on the Java platform.

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