diff --git a/vendor/jasmine-helper.coffee b/vendor/jasmine-helper.coffee
index c99b44051..1c735ef8f 100644
--- a/vendor/jasmine-helper.coffee
+++ b/vendor/jasmine-helper.coffee
@@ -6,6 +6,7 @@ module.exports.runSpecSuite = (specSuite, logErrors=true) ->
   nakedLoad 'jasmine-focused'
 
   $ = require 'jquery'
+  _ = require 'underscore'
 
   $('body').append $$ ->
     @div id: 'jasmine-content'
@@ -18,5 +19,35 @@ module.exports.runSpecSuite = (specSuite, logErrors=true) ->
   require specSuite
   jasmineEnv = jasmine.getEnv()
   jasmineEnv.addReporter(reporter)
+
+  class TimeReporter  extends jasmine.Reporter
+
+    timedSpecs: []
+
+    reportSpecStarting: (spec) ->
+      stack = [spec.description]
+      suite = spec.suite
+      while suite
+        stack.unshift suite.description
+        suite = suite.parentSuite
+
+      @time = new Date().getTime()
+      @description = stack.join(' -> ')
+
+    reportSpecResults: ->
+      return unless @time? and @description?
+      @timedSpecs.push
+        description: @description
+        time: new Date().getTime() - @time
+      @time = null
+      @description = null
+
+    reportRunnerResults: ->
+      console.log '10 longest running specs:'
+      for spec in _.sortBy(@timedSpecs, (spec) -> -spec.time)[0...10]
+        console.log "#{spec.time}ms"
+        console.log spec.description
+
+  jasmineEnv.addReporter(new TimeReporter())
   jasmineEnv.specFilter = (spec) -> reporter.specFilter(spec)
   jasmineEnv.execute()