diff --git a/benchmark/d8_benchmark.js b/benchmark/d8_benchmark.js
new file mode 100644
index 0000000..2a35ce5
--- /dev/null
+++ b/benchmark/d8_benchmark.js
@@ -0,0 +1,34 @@
+var testDiv = document.createElement('div');
+var width = 2;
+var depth = 4;
+var decoration = 8;
+var instanceCount = 10;
+var oneTime = true;
+var compoundBindings = false;
+var expressionCheckbox = false;
+var bindingDensities = [0, .1, .2, .3, .4, .5, .6, .7, .8, .9, 1];
+var testTypes = ['MDV'];
+
+function benchmarkComplete(results) {
+  print('benchmarkComplete');
+  print(JSON.stringify(results));
+}
+
+function updateStatus(density, testType, runCount) {
+  print('updateStatus');
+  print(testType + ' ' + (100 * density) +
+        '% binding density, ' + runCount + ' runs');
+}
+
+var test = new MDVBenchmark(testDiv, width, depth, decoration, instanceCount,
+                            oneTime,
+                            compoundBindings,
+                            expressionCheckbox);
+
+var runner = new BenchmarkRunner(test,
+                                 bindingDensities,
+                                 testTypes,
+                                 benchmarkComplete,
+                                 updateStatus);
+runner.go();
+runTimeouts();
diff --git a/benchmark/dom.js b/benchmark/dom.js
new file mode 100644
index 0000000..025792c
--- /dev/null
+++ b/benchmark/dom.js
@@ -0,0 +1,364 @@
+var console = {
+  log: print,
+  error: print
+};
+
+var timeouts = []
+function setTimeout(fn) {
+  timeouts.push(fn);
+}
+
+function runTimeouts() {
+  while (timeouts.length) {
+    if (Object.deliverAllChangeRecords)
+      Object.deliverAllChangeRecords();
+    timeouts.shift()();
+  }
+}
+
+function Window() {}
+
+var window = new Window();
+
+function Event(type) {
+  this.type = type;
+}
+Event.prototype = {
+  initMouseEvent: function() {}
+}
+
+function Node(owner) {
+  this.ownerDocument = owner;
+  this.parentNode = null;
+  this.nextSibling = null;
+  this.previousSibling = null;
+  this.firstChild = null;
+  this.lastChild = null;
+}
+Node.prototype = {
+  addEventListener: function() {},
+  set textContent(content) {
+    this.data = content;
+  },
+  get textContent() {
+    return this.data;
+  },
+  dispatchEvent: function() {},
+  appendChild: function(node) {
+    if (node instanceof DocumentFragment) {
+      while (node.firstChild) {
+        this.appendChild(node.firstChild);
+      }
+
+      return;
+    }
+
+    if (node.parentNode) {
+      node.parentNode.removeChild(node);
+    }
+
+    node.parentNode = this;
+    if (!this.firstChild) {
+      this.firstChild = node;
+      this.lastChild = node;
+    } else {
+      this.lastChild.nextSibling = node;
+      node.previousSibling = this.lastChild;
+      this.lastChild = node;
+    }
+    return node;
+  },
+
+  removeChild: function(node) {
+    if (node.parentNode != this)
+      return;
+    if (!node.previousSibling && !node.nextSibling) {
+      this.firstChild = null;
+      this.lastChild = null;
+    } else if (!node.previousSibling) {
+      this.firstChild = node.nextSibling;
+      node.nextSibling.previousSibling = null;
+    } else if (!node.nextSibling) {
+      this.lastChild = node.previousSibling;
+      node.previousSibling.nextSibling = null;
+    } else {
+      node.previousSibling.nextSibling = node.nextSibling;
+      node.nextSibling.previousSibling = node.previousSibling;
+    }
+
+    node.parentNode = null;
+    node.previousSibling = null;
+    node.nextSibling = null;
+  },
+  insertBefore: function(node, otherNode) {
+    if (node.parentNode)
+      node.parentNode.removeChild(node);
+    if (node instanceof DocumentFragment) {
+      while (node.firstChild) {
+        this.insertBefore(node.firstChild, otherNode);
+      }
+      return node;
+    }
+    if (!otherNode || otherNode.parentNode !== this)
+      return this.appendChild(node);
+    if (!otherNode.previousSibling) {
+      otherNode.previousSibling = node;
+      node.previousSibling = null;
+      node.nextSibling = otherNode;
+      this.firstChild = node;
+    } else {
+      otherNode.previousSibling.nextSibling = node;
+      node.previousSibling = node.previousSibling;
+      node.nextSibling = otherNode;
+      otherNode.previousSibling = node;
+    }
+    node.parentNode = this;
+    return node;
+  },
+  cloneNode: function(deep) {
+    var clone = this.cloneNode_();
+    if (deep) {
+      for (var child = this.firstChild; child; child = child.nextSibling) {
+        var c = child.cloneNode(deep);
+        clone.appendChild(c);
+      }
+    }
+    return clone;
+  },
+
+  get childNodes() {
+    var retval = [];
+    for (var child = this.firstChild; child; child = child.nextSibling)
+      retval.push(child);
+    return retval;
+  },
+
+  set innerHTML() {
+    while (this.firstChild) {
+      this.removeChild(this.firstChild);
+    }
+  },
+
+  dump: function(pre) {
+    var prefix = '';
+    for (var i = 0; i < pre; i++)
+      prefix += ' ';
+    print(prefix + this.toString());
+    for (var child = this.firstChild; child; child = child.nextSibling)
+      child.dump(pre + 2);
+  }
+}
+
+Node.ELEMENT_NODE = 1;
+Node.TEXT_NODE = 3;
+Node.DOCUMENT_FRAGMENT_NODE = 11;
+Node.DOCUMENT_NODE = 9;
+
+function Document(defaultView) {
+  Node.call(this, null);
+  this.defaultView = defaultView;
+  this.templateContentsOwnerDocument = defaultView ? new Document() : this;
+}
+Document.prototype = {
+  __proto__: Node.prototype,
+  nodeType: Node.DOCUMENT_NODE,
+  implementation: {
+    createHTMLDocument: function() {
+      return new Document();
+    }
+  },
+  importNode: function(node) {
+    var clone = node.cloneNode(false);
+    clone.ownerDocument = this;
+    return clone;
+  },
+  createElement: function(tagName) {
+    var n = this.createElement_(tagName);
+    return n;
+  },
+  createElement_: function(tagName) {
+    tagName = tagName.toUpperCase();
+    switch(tagName) {
+      case 'DIV':
+        return new HTMLDivElement(this, tagName);
+      case 'INPUT':
+        return new HTMLInputElement(this, tagName);
+      case 'P':
+        return new HTMLParagraphElement(this, tagName);
+      case 'SPAN':
+        return new HTMLSpanElement(this, tagName);
+      case 'H1':
+      case 'H2':
+        return new HTMLHeadingElement(this, tagName);
+      case 'TEMPLATE':
+        return new HTMLTemplateElement(this, tagName);
+      default:
+        throw Error('Unknown tag: ' + tagName);
+    }
+  },
+  createEvent: function(type) {
+    return new Event(type);
+  },
+  createDocumentFragment: function() {
+    return new DocumentFragment();
+  },
+  createTextNode: function(data) {
+    return new Text(this, data);
+  }
+}
+var document = new Document(window);
+
+function DocumentFragment(owner) {
+  Node.call(this, owner);
+}
+DocumentFragment.prototype = {
+  __proto__: Node.prototype,
+  nodeType: Node.DOCUMENT_FRAGMENT_NODE,
+  cloneNode_: function() {
+    return new DocumentFragment(this.ownerDocument);
+  },
+  toString: function() {
+    return '#document-fragment';
+  },
+  querySelectorAll: function() {
+    return [];
+  }
+};
+
+
+function Text(owner, data) {
+  Node.call(this, owner);
+  this.data = data;
+}
+Text.prototype = {
+  __proto__: Node.prototype,
+  nodeType: Node.TEXT_NODE,
+  cloneNode_: function() {
+    return new Text(this.ownerDocument, this.data);
+  },
+  toString: function() {
+    return '#text: ' + this.data;
+  }
+};
+
+function Element(owner, tagName) {
+  Node.call(this, owner);
+  this.tagName = tagName;
+  this.attributes = [];
+};
+
+Element.prototype = {
+  __proto__: Node.prototype,
+  nodeType: Node.ELEMENT_NODE,
+  cloneNode_: function() {
+    var c = this.ownerDocument.createElement(this.tagName);
+    for (var i = 0; i < this.attributes.length; i++)
+      c.attributes.push(this.attributes[i]);
+    return c;
+  },
+  setAttribute: function(name, value) {
+    this.attributes.push({ name: name, value: value });
+  },
+  getAttribute: function(name) {
+    var count = this.attributes.length;
+    while (count-- > 0) {
+      if (this.attributes[count].name === name)
+        return this.attributes[count].value;
+    }
+    return null;
+  },
+  hasAttribute: function(name) {
+    var count = this.attributes.length;
+    while (count-- > 0) {
+      if (this.attributes[count].name === name)
+        return true;
+    }
+
+    return false;
+  },
+  toString: function() {
+    var string = '<' + this.tagName + '>[';
+    var attrs = {};
+    var count = this.attributes.length;
+    while (count-- > 0) {
+      var attr = this.attributes[count];
+      if (attrs[attr.name])
+        continue;
+      string += attr.name + '=' + attr.value + ', ';
+      attrs[attr.name] = true;
+    }
+    string += ']';
+    return string;
+  },
+};
+
+function HTMLElement(owner, tagName) {
+  Element.call(this, owner, tagName);
+}
+HTMLElement.prototype = {
+  __proto__: Element.prototype
+};
+
+function HTMLDivElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+}
+HTMLDivElement.prototype = {
+  __proto__: HTMLElement.prototype
+};
+
+function HTMLInputElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+}
+HTMLInputElement.prototype = {
+  __proto__: HTMLElement.prototype
+};
+
+function HTMLTextAreaElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+}
+HTMLTextAreaElement.prototype = {
+  __proto__: HTMLElement.prototype
+};
+
+function HTMLOptionElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+}
+HTMLOptionElement.prototype = {
+  __proto__: HTMLElement.prototype
+};
+
+function HTMLSelectElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+}
+HTMLSelectElement.prototype = {
+  __proto__: HTMLElement.prototype
+};
+
+function HTMLParagraphElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+}
+HTMLParagraphElement.prototype = {
+  __proto__: HTMLElement.prototype
+};
+
+function HTMLSpanElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+}
+HTMLSpanElement.prototype = {
+  __proto__: HTMLElement.prototype
+};
+
+function HTMLHeadingElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+}
+HTMLHeadingElement.prototype = {
+  __proto__: HTMLElement.prototype
+};
+
+function HTMLTemplateElement(owner, tagName) {
+  HTMLElement.call(this, owner, tagName);
+  this.content = new DocumentFragment();
+}
+HTMLTemplateElement.prototype = {
+  __proto__: HTMLElement.prototype
+};