JVM Mechanics

Doug Hawkins from Azul Systems stopped by the SF Java User Group to get under the hood of the JVM, and expose the mechanics behind how your code is compiled.

HotSpot promises to do wonders for us by Just-in-Time (JIT) compiling the "right" code for us, but how does it makes those decisions? And, perhaps more importantly, what happens when it's wrong?

In this talk, you'll learn through running Java code how the JVM decides to compile your code and see firsthand some situations where the JVM may get it wrong and have to deoptimize.

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Published December 2, 2015