HotSpot Just in Time Compilation
|HotSpot Just in Time Compilation|
|Convenor: Chris Newland|
The core of the talk was Chris Newland's presentation on the behaviour of HotSpot's C1/C2 JIT compilers along with the visualization tool JITWatch.
The discussion then opened up to JIT and performance related questions and answers.
Heinz Kabutz showed an example program which OOM'd under Java 7 but not under Java 8 due to JIT behaviours.
Slides from the session: https://commons.wikimedia.org/wiki/File:HotSpot_Just_In_Time_Compilation_JCrete_2014.pdf
JITWatch is a free open source project available on GitHub https://github.com/adoptopenjdk/jitwatch