illustrate parameters

Author: guybedford

test/perf.html

@@ -5,16 +5,42 @@
   <script src="../dist/es6-module-loader.js"></script>
   <script>
     /* PARAMETERS */
-    var TREE_DEPTH = 2;
+    var TREE_DEPTH = 10;
     var NUM_MODULES = 1000;
 
+    /*
+      TREE LOOKS LIKE - 
+
+                           MODULE NUM_MODULES
+                                   |
+                                   |
+      -------------------------------------  ...
+      |                            |                 |
+    MODULE 1              MODULE TREE_DEPTH         ...
+      |                            |
+    MODULE 2              MODULE TREE_DEPTH + 2
+     ...                         ...
+ MODULE TREE_DEPTH - 1   MODULE TREE_DEPTH * 2 - 1
+
+THAT IS -
+  DEPTH   =  TREE_DEPTH
+  BREADTH =  FLOOR(NUM_MODULES / TREE_DEPTH)
+
+    */
+
 
     System.set('module0', System.newModule({}));
     System.instantiate = function(load) {
       var num = load.name.substr(6);
 
       var deps = [];
-      if (num % TREE_DEPTH > 0)
+
+      // the last module depends on all of them
+      if (num == NUM_MODULES) {
+        for (var i = 0; i < NUM_MODULES; i += TREE_DEPTH)
+          deps.push('module' + i);
+      }
+      else if (num % TREE_DEPTH > 0)
         deps = ['module' + (num - 1)];
 
       return {
@@ -32,11 +58,8 @@
 
       for (var i = 1; i <= NUM_MODULES; i++)
         System.define('module' + i, "function q() {} var p = 5;\n // non-trivial code");
-      var promises = [];
-      for (var i = NUM_MODULES; i > 1; i--) {
-        promises.push(System.import('module' + i));
-      }
-      Promise.all(promises).then(function() {
+      
+      System.import('module' + NUM_MODULES).then(function() {
         document.body.innerHTML = ((Date.now() - startTime) / NUM_MODULES) + 'ms per module';
       }).catch(function(e) {
         setTimeout(function() {