Compared performance of pure-Java references vs. Java interop.

Author: jdantonio

lib/ref/version.rb

@@ -1,3 +1,3 @@
 module Ref
-  VERSION = '1.0.5'
+  VERSION = '2.0.0.pre1'
 end

ref_speed_test.rb

@@ -0,0 +1,83 @@
+#!/usr/bin/env ruby
+
+require 'ref'
+require 'benchmark'
+
+REF_CLASSES = [
+  Ref::SoftReference,
+  Ref::WeakReference
+]
+
+NUM = 500_000
+
+def version
+  if defined? Ref::VERSION
+    Ref::VERSION
+  else
+    gem_dir = Gem::Specification.find_by_name('ref').gem_dir
+    File.open(File.join(gem_dir, 'VERSION'), 'r').read
+  end
+rescue
+  'unknown'
+end
+
+puts "~~~ Ruby version: #{RUBY_VERSION}"
+if defined? JRUBY_VERSION
+  puts "~~~ JRuby version: #{JRUBY_VERSION}"
+else
+  puts "~~~ Ruby engine: #{RUBY_ENGINE}"
+end
+puts "~~~ Gem version: #{version}"
+
+Benchmark.bm do |stats|
+
+  REF_CLASSES.each do |clazz|
+
+    puts "Benchmarking #{clazz}..."
+
+    ref = clazz.new('foo')
+    value = nil
+
+    stats.report do
+      NUM.times { value = ref.object }
+    end
+  end
+end
+
+__END__
+
+~~~ Ruby version: 1.9.3
+~~~ JRuby version: 1.7.18
+~~~ Gem version: 1.0.5
+       user     system      total        real
+Benchmarking Ref::SoftReference...
+   0.270000   0.010000   0.280000 (  0.114000)
+Benchmarking Ref::WeakReference...
+   0.080000   0.000000   0.080000 (  0.029000)
+
+~~~ Ruby version: 1.9.3
+~~~ JRuby version: 1.7.18
+~~~ Gem version: 2.0.0.pre1
+       user     system      total        real
+Benchmarking Ref::SoftReference...
+   1.020000   0.040000   1.060000 (  0.410000)
+Benchmarking Ref::WeakReference...
+   0.200000   0.020000   0.220000 (  0.165000)
+
+~~~ Ruby version: 2.2.0
+~~~ Ruby engine: ruby
+~~~ Gem version: 2.0.0.pre1
+       user     system      total        real
+Benchmarking Ref::SoftReference...
+   0.610000   0.000000   0.610000 (  0.621205)
+Benchmarking Ref::WeakReference...
+   0.120000   0.000000   0.120000 (  0.113426)
+
+~~~ Ruby version: 2.1.0
+~~~ Ruby engine: rbx
+~~~ Gem version: 2.0.0.pre1
+       user     system      total        real
+Benchmarking Ref::SoftReference...
+   1.725505   0.007228   1.732733 (  0.922712)
+Benchmarking Ref::WeakReference...
+   0.167794   0.001500   0.169294 (  0.088065)