correct bench code

script/benchmarks/markdown/bench.rb

@@ -9,7 +9,6 @@ tests = [
   ["lots of mentions", File.read("lots_of_mentions.md")]
 ]
 
-SiteSetting.enable_experimental_markdown_it = true
 PrettyText.cook("")
 PrettyText.v8.eval("window.commonmark = window.markdownit('commonmark')")
 
@@ -27,19 +26,9 @@ PrettyText.v8.eval("window.commonmark = window.markdownit('commonmark')")
 
 Benchmark.ips do |x|
   [true,false].each do |sanitize|
-    {
-      "markdown js" =>
-        lambda{SiteSetting.enable_experimental_markdown_it = false},
-
-      "markdown it" =>
-        lambda{SiteSetting.enable_experimental_markdown_it = true}
-    }.each do |name, before|
-      before.call
-
-      tests.each do |test, text|
-        x.report("#{name} #{test} sanitize: #{sanitize}") do
-          PrettyText.markdown(text, sanitize: sanitize)
-        end
+    tests.each do |test, text|
+      x.report("#{test} sanitize: #{sanitize}") do
+        PrettyText.markdown(text, sanitize: sanitize)
       end
     end
   end
@@ -52,3 +41,33 @@ Benchmark.ips do |x|
   end
 end
 
+
+# 18-07-2017 - Sam's NUC
+
+# Calculating -------------------------------------
+# tiny post sanitize: true
+#                         162.766  (±13.5%) i/s -    812.000  in   5.101429s
+# giant post sanitize: true
+#                         133.957  (±11.2%) i/s -    663.000  in   5.029386s
+# most features sanitize: true
+#                          55.319  (±10.8%) i/s -    276.000  in   5.054290s
+# lots of mentions sanitize: true
+#                           0.313  (± 0.0%) i/s -      2.000  in   6.394343s
+# tiny post sanitize: false
+#                         456.209  (±13.6%) i/s -      2.288k in   5.117314s
+# giant post sanitize: false
+#                         331.357  (±10.9%) i/s -      1.650k in   5.046322s
+# most features sanitize: false
+#                          77.038  (±10.4%) i/s -    385.000  in   5.055062s
+# lots of mentions sanitize: false
+#                           0.312  (± 0.0%) i/s -      2.000  in   6.430657s
+# markdown it no extensions commonmark tiny post
+#                           6.916k (± 5.5%) i/s -     34.540k in   5.010354s
+# markdown it no extensions commonmark giant post
+#                           1.044k (± 9.3%) i/s -      5.247k in   5.090534s
+# markdown it no extensions commonmark most features
+#                           1.457k (± 5.0%) i/s -      7.314k in   5.034401s
+# markdown it no extensions commonmark lots of mentions
+#                           2.004k (± 5.2%) i/s -     10.192k in   5.100657s
+# sam@ubuntu markdown %
+#