MethodHandle Performance

Posted by: IKVM.NET Weblog, on 25 Jun 2015 | View original | Bookmarked: 0 time(s)

Last time I mentioned that with the integration of OpenJDK 8u45 MethodHandle performance went from awful to unusable. That was pretty literal as the JSR 292 test cases that I regularly run went from taking about 8 minutes to more than 30 minutes (when my patience ran out). Using sophisticated profiling techniques (pressing Ctrl-Break a few times) I determined that a big part of the problem was MethodHandle.asType(). So I wrote a microbenchmark: IKVM 8.0.5449.1 IKVM 8.1.5638 asType.permutations(1) 2108 9039 asType.permutations(2) 2476 17269 The...

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