Benchmarking reveals filtering out non-files takes forevs

toString everything        0.199
Filter out non-files       0.703
Everything                 0.961

index.html

@@ -3,6 +3,18 @@
   <script src='src/stdlib/require.js'></script>
 
   <script>
+    window.measure = function(name) {
+        var start = new Date().getTime();
+        return {stop: function() {
+          var end = new Date().getTime();
+          var total = (end - start) / 1000;
+          while(name.length < 40) {
+            name = name + " "
+          }
+          console.log(name + (end - start) / 1000);
+        }}
+    }
+
     window.onload = function() {
       require($bootstrapScript);
     }

src/atom/file-finder.coffee

@@ -49,8 +49,10 @@ class FileFinder extends Template
       if not query
         urls = @urls
       else
+        scoreMeasure = measure 'Score urls'
         scoredUrls = ({url, score: stringScore(url, query)} for url in @urls)
         scoredUrls.sort (a, b) -> a.score > b.score
         urls = (urlAndScore.url for urlAndScore in scoredUrls when urlAndScore.score > 0)
+        scoreMeasure.stop()
 
       urls.slice 0, @maxResults

src/atom/project.coffee

@@ -6,7 +6,13 @@ class Project
   constructor: (@url) ->
 
   getFilePaths: ->
+    everythingMeasure = measure "Everything"
     projectUrl = @url
     fs.async.list(@url, true).pipe (urls) ->
-      url.replace(projectUrl, "") for url in urls when fs.isFile(url)
+      filterMeasure = measure "Filter out non-files"
+      urls = (url.replace(projectUrl, "") for url in urls when fs.isFile(url))
+      filterMeasure.stop()
+      everythingMeasure.stop()
+
+      urls
 

src/stdlib/fs.coffee

@@ -100,6 +100,9 @@ module.exports =
     list: (path, recursive) ->
       deferred = $.Deferred()
       $atomController.contentsOfDirectoryAtPath_recursive_onComplete path, recursive, (result) ->
-        deferred.resolve (subpath.toString() for subpath in result)
+        subpathMeasure = measure 'toString everything'
+        subpaths = (subpath.toString() for subpath in result)
+        subpathMeasure.stop()
+        deferred.resolve subpaths
       deferred