java integration java.util.HashMap performance regression
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Key: JRUBY-6018
URL: https://jira.codehaus.org/browse/JRUBY-6018
Project: JRuby
Issue Type: Bug
Components: Java Integration
Affects Versions: JRuby 1.6
Environment: Linux hostname 2.6.35-30-generic #56-Ubuntu SMP Mon Jul
11 20:01:08 UTC 2011 x86_64 GNU/Linux
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.9) (6b20-1.9.9-0ubuntu1~10.10.2)
OpenJDK 64-Bit Server VM (build 19.0-b09, mixed mod
Reporter: Brian Tatnall
Attachments: hash_map_benchmark.rb
Ruby accessors to java.util.HashMap are ~30x slower in 1.6.X compared to 1.5.6.
rvm jruby-1.5.6,jruby-1.6.0,jruby-1.6.4 hash_map_benchmark.rb
1.5.6
[]= took 0.197 seconds
put took 0.073 seconds
[] took 0.11 seconds
get took 0.028 seconds
1.6.0
[]= took 5.354 seconds
put took 0.074 seconds
[] took 5.049 seconds
get took 0.028 seconds
1.6.4
[]= took 4.589 seconds
put took 0.068 seconds
[] took 4.215 seconds
get took 0.027 seconds
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