Java JIT analysis and code coverage

Published June 12th, 2013

I am building a tool to visualise how much of a program's code is JIT compiled at runtime

Research Info:

https://wikis.oracle.com/display/HotSpotInternals/Home

http://blog.joda.org/2011/08/printcompilation-jvm-flag.html

https://gist.github.com/rednaxelafx/1165804#file_notes.md

http://blog.headius.com/2009/01/my-favorite-hotspot-jvm-flags.html

Enable JIT logging in HotSpot VM:

-XX:+UnlockDiagnosticVMOptions -XX:+PrintCompilation -XX:+LogCompilation -XX:+PrintInlining

I have now open-sourced my work on HotSpot logs at GitHub

https://github.com/chriswhocodes/jitwatch

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