diff --git a/html/index.html b/html/index.html
index 6fe0e77..6b6fa80 100644
--- a/html/index.html
+++ b/html/index.html
@@ -25,5 +25,18 @@ <h1>Web Latency Benchmark</h1>
   The benchmark server is no longer running. You must restart it before running the test.
 </div>
 
+<div>
+  <h4>List of Available Tests</h4>
+  <ul>
+    <li>1. Keydown latency</li>
+    <li>2. Scroll latency</li>
+    <li>3. Native reference</li>
+    <li>4. Baseline jank</li>>
+    <li>5. Javascript jank</li>
+    <li>6. Image loading jank</li>
+    <li>7. Worker GC Load</li>
+  </ul>
+</div>
+
 
 <script src="keep-server-alive.js"></script>
diff --git a/html/latency-benchmark.js b/html/latency-benchmark.js
index 4632b65..e8d52b1 100644
--- a/html/latency-benchmark.js
+++ b/html/latency-benchmark.js
@@ -72,6 +72,19 @@ var preventContextMenuAndSelection = function(e) {
   return false;
 }
 
+var parseUrl = function(q) {
+  var exp = q.substr(q.indexOf("=") + 1, q.length);
+  return exp.split(exp.match(/\D/));
+};
+
+var genArray = function(range) {
+  var arr = new Array();
+  for(var i = 0; i < range; i++) {
+    arr[i] = i+1;
+  }
+
+  return arr;
+}
 
 var addEvents = function() {
   document.addEventListener('keydown', preventContextMenuAndSelection);
@@ -142,12 +155,26 @@ var spinDone = true;
 workerHandlers.spin = function(e) {
   spinDone = true;
 };
+workerHandlers.gcLoad = function(e) {
+  return test.finishedMeasuring = true;
+};
 
 // We don't use getPrefixed here because we want to replace the unprefixed version with the prefixed one if it exists.
 if (worker) {
   worker.postMessage = worker.webkitPostMessage || worker.mozPostMessage || worker.oPostMessage ||worker.msPostMessage || worker.postMessage;
 }
 
+var workerGCLoad = function() {
+  if (!worker)
+    return fail(this);
+  var test = this;
+  try {
+    worker.postMessage({test: 'gcLoad'});
+  } catch(e) {
+    fail(this);
+  }
+}
+
 var checkTransferables = function() {
   if (!worker || !window.ArrayBuffer)
     return fail(this);
@@ -427,6 +454,9 @@ var tests = [
   { name: 'Image loading jank',
     info: 'Tests responsiveness during image loading.',
     test: testJank, blocker: loadGiantImage, report: ['css', 'js', 'scroll'] },
+  { name: 'Worker GC Load',
+    info: 'Tests if worker GC affects main page.',
+    test: testJank, blocker: workerGCLoad, report: ['js', 'scroll'] },
   // These tests work, but are disabled for now to focus on the latency test.
   // { name: 'requestAnimationFrame', test: checkName, toCheck: 'requestAnimationFrame' },
   // { name: 'Canvas 2D', test: checkName, toCheck: 'HTMLCanvasElement' },
@@ -474,29 +504,39 @@ var tests = [
   // { name: 'Worker GC doesn\'t affect main page', test: testJank, blocker: workerGCLoad },
   ];
 
-for (var i = 0; i < tests.length; i++) {
-  var test = tests[i];
-  var row = document.createElement('tr');
-  var nameCell = document.createElement('td');
-  var resultCell = document.createElement('td');
-  var infoCell = document.createElement('td');
-  nameCell.className = 'testName';
-  nameCell.textContent = test.name;
-  var description = document.createElement('div');
-  description.className = 'testDescription';
-  nameCell.appendChild(description);
-  if (test.info) {
-    description.textContent = test.info;
+if(window.location.search) {
+  var testIndexes = parseUrl(window.location.search);
+}
+
+var testList = testIndexes || genArr(tests.length);
+
+for (var i = 0; i < testList.length; i++) {
+  if(testList[i] <= tests.length) { 
+    var test = tests[testList[i]-1];
+    var row = document.createElement('tr');
+    var nameCell = document.createElement('td');
+    var resultCell = document.createElement('td');
+    var infoCell = document.createElement('td');
+    nameCell.className = 'testName';
+    nameCell.textContent = test.name;
+    var description = document.createElement('div');
+    description.className = 'testDescription';
+    nameCell.appendChild(description);
+    if (test.info) {
+      description.textContent = test.info;
+    }
+    resultCell.className = 'testResult';
+    test.resultCell = document.createElement('div');
+    resultCell.appendChild(test.resultCell);
+    infoCell.className = 'testInfo';
+    test.infoCell = infoCell;
+    row.appendChild(nameCell);
+    row.appendChild(resultCell);
+    row.appendChild(infoCell);
+    table.appendChild(row);
+  } else {
+    document.getElementById("progressMessage").textContent = "Error: test index "+ testList[i] +" out of range.";
   }
-  resultCell.className = 'testResult';
-  test.resultCell = document.createElement('div');
-  resultCell.appendChild(test.resultCell);
-  infoCell.className = 'testInfo';
-  test.infoCell = infoCell;
-  row.appendChild(nameCell);
-  row.appendChild(resultCell);
-  row.appendChild(infoCell);
-  table.appendChild(row);
 }
 
 var nextTestIndex = 0;
@@ -509,13 +549,13 @@ var runNextTest = function(previousTest) {
       return;
     }
     previousTest.finished = true;
-    if (previousTest != tests[nextTestIndex - 1]) {
+    if (previousTest != tests[testList[nextTestIndex - 1]-1]) {
       previousTest.infoCell.textContent = "Error: test sent results out of order";
       return;
     }
   }
   var testIndex = nextTestIndex++;
-  if (testIndex >= tests.length) {
+  if (testIndex >= testList.length) {
     // All tests successfully completed. Report the overall score as a number out of 10.
     var scoreRatio = totalScore / totalPossibleScore;
     var score = document.getElementById('score');
@@ -528,7 +568,7 @@ var runNextTest = function(previousTest) {
     // End the test run.
     return;
   }
-  var test = tests[testIndex];
+  var test = tests[testList[testIndex]-1];
   test.infoCell.textContent = '';
   test.resultCell.textContent = '⋯';
   setTimeout(function() { checkTimeout(test); }, 50000);
diff --git a/html/worker.js b/html/worker.js
index 8b21abf..8372a2d 100644
--- a/html/worker.js
+++ b/html/worker.js
@@ -25,6 +25,30 @@ self.onmessage = function(e) {
     var start = getMs();
     while (getMs() - e.data.lengthMs < start);
     self.postMessage(e.data);
+  } else if (e.data.test == 'gcLoad') {
+    var createObjects = function(n) {
+      var a = new Array(1000*n);
+      var count = 0;
+      for(var  i=0; i<g.length; i++) {
+	g[i] = {count: count++};
+      }
+
+      var generateGarbage = function() {
+	var i;
+	for(i=0; i<g.length; i++) {
+	  g[i] = {count: g[i].count * 2};
+	}
+      };
+
+      return generateGarbage;
+    };
+
+    var gen = createObjects(20);
+    var start = getMs();
+    while (getMs() - start < 1000) {
+	gen();
+    }
+    self.postMessage(e.data);
   } else {
     console.error('unknown worker message: ' + e.data.test);
   }