TeWu · March 12, 2020 11:49 · Mar 12, 2020 · Mar 12, 2020
diff --git a/ruby_bench_max.rb b/ruby_bench_max.rb
@@ -1,5 +1,6 @@
 require 'benchmark/ips'
 
+
 def fast(a, b)
   a > b ? a : b
 end
@@ -8,6 +9,7 @@ def slow(a, b)
   [a, b].max
 end
 
+
 class GCSuite
   def warming(*)
     run_gc
@@ -29,10 +31,9 @@ def run_gc
   end
 end
 
-suite = GCSuite.new
 
 Benchmark.ips do |x|
-  x.config(:time => 10, :warmup => 2, :suite => suite)
+  x.config(time: 10, warmup: 2, suite: GCSuite.new)
   x.stats = :bootstrap
   x.confidence = 95
 
@@ -51,4 +52,4 @@ def run_gc
     end
   end
   x.compare!
-end
+end
diff --git a/ruby_bench_max.rb b/ruby_bench_max.rb
@@ -0,0 +1,54 @@
+require 'benchmark/ips'
+
+def fast(a, b)
+  a > b ? a : b
+end
+
+def slow(a, b)
+  [a, b].max
+end
+
+class GCSuite
+  def warming(*)
+    run_gc
+  end
+
+  def running(*)
+    run_gc
+  end
+
+  def warmup_stats(*); end
+  def add_report(*); end
+
+  private
+
+  def run_gc
+    GC.enable
+    GC.start
+    GC.disable
+  end
+end
+
+suite = GCSuite.new
+
+Benchmark.ips do |x|
+  x.config(:time => 10, :warmup => 2, :suite => suite)
+  x.stats = :bootstrap
+  x.confidence = 95
+
+  x.report('fast code') do |times|
+    i = 0
+    while i < times
+      fast(100, 200)
+      i += 1
+    end
+  end
+  x.report('slow code') do |times|
+    i = 0
+    while i < times
+      slow(100, 200)
+      i += 1
+    end
+  end
+  x.compare!
+end