Performance regression with Calling Java collection method with Ruby notation
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Key: JRUBY-6006
URL: https://jira.codehaus.org/browse/JRUBY-6006
Project: JRuby
Issue Type: Bug
Components: Performance
Affects Versions: JRuby 1.6.3
Environment: JDK 1.6 update 7 Windows XP
Reporter: Peter K Chan
There appears to be a significant performance regression between 1.5.6 and
1.6.0 on using Ruby notation to call Java collection method.
Test case:
{code}
require 'java'
require 'benchmark'
puts Benchmark.measure {
x = java.util.HashMap.new
5000.times { |n| true ? x[n.to_s] = 'y' : x.put(n.to_s, 'y') }
}
{code}
Performance:
{quote}
C:\work>jruby -v foo.rb
jruby 1.5.6 (ruby 1.8.7 patchlevel 249) (2010-12-03 9cf97c3) (Java HotSpot(TM)
Client VM 1.6.0_07) [x86-java]
0.140000 0.000000 0.140000 ( 0.125000)
C:\work>jruby -v foo.rb
jruby 1.6.0 (ruby 1.8.7 patchlevel 330) (2011-03-15 f3b6154) (Java HotSpot(TM)
Client VM 1.6.0_07) [Windows XP-x86-java]
8.594000 0.000000 8.594000 ( 8.578000)
C:\work>jruby -v foo.rb
jruby 1.6.3 (ruby-1.8.7-p330) (2011-07-07 965162f) (Java HotSpot(TM) Client VM
1.6.0_07) [Windows XP-x86-java]
9.031000 0.000000 9.031000 ( 8.984000)
{quote}
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