third_party/blink/perf_tests/test_data/simple-blob-measure-async.html - chromium/src - Git at Google

 <!DOCTYPE html>
 <html>
 <body>
 <script src = "../resources/runner.js"></script>
 <script>

 var startTime;
 var isDone = false;

 function createAndRead(size) {
     var reader = new FileReader();
     var blob = new Blob([new Uint8Array(size)], {type: 'application/octet-string'});
     reader.onloadend = function(e) {
         if (reader.error) {
             throw new Error('Error when reading blob: ' + reader.error);
         }
         if (reader.result.byteLength != size)
             throw new Error("Sizes don't match");
         PerfTestRunner.measureValueAsync(PerfTestRunner.now() - startTime);
         PerfTestRunner.addRunTestEndMarker();
         if (!isDone)
             createAndRead(size);
     }
     PerfTestRunner.addRunTestStartMarker();
     startTime = PerfTestRunner.now();
     reader.readAsArrayBuffer(blob);
 }

 function runTest() {
   createAndRead(1024*1024);
 }

 window.onload = function () {
     PerfTestRunner.startMeasureValuesAsync({
         unit: 'ms',
         done: function () {
             isDone = true;
         },
         run: function() {
             runTest();
         },
         warmUpCount: 2,
         iterationCount: 6,
         description: "Measures performance of blob read.",
         tracingCategories: 'Blob',
         traceEventsToMeasure: ['BlobRequest', 'BlobRequest::ReadRawData',
                                'BlobReader', 'BlobReader::ReadMore']
     });
 };
 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<body>
	<script src = "../resources/runner.js"></script>
	<script>

	var startTime;
	var isDone = false;

	function createAndRead(size) {
	var reader = new FileReader();
	var blob = new Blob([new Uint8Array(size)], {type: 'application/octet-string'});
	reader.onloadend = function(e) {
	if (reader.error) {
	throw new Error('Error when reading blob: ' + reader.error);
	}
	if (reader.result.byteLength != size)
	throw new Error("Sizes don't match");
	PerfTestRunner.measureValueAsync(PerfTestRunner.now() - startTime);
	PerfTestRunner.addRunTestEndMarker();
	if (!isDone)
	createAndRead(size);
	}
	PerfTestRunner.addRunTestStartMarker();
	startTime = PerfTestRunner.now();
	reader.readAsArrayBuffer(blob);
	}

	function runTest() {
	createAndRead(1024*1024);
	}

	window.onload = function () {
	PerfTestRunner.startMeasureValuesAsync({
	unit: 'ms',
	done: function () {
	isDone = true;
	},
	run: function() {
	runTest();
	},
	warmUpCount: 2,
	iterationCount: 6,
	description: "Measures performance of blob read.",
	tracingCategories: 'Blob',
	traceEventsToMeasure: ['BlobRequest', 'BlobRequest::ReadRawData',
	'BlobReader', 'BlobReader::ReadMore']
	});
	};
	</script>
	</body>
	</html>