chromium/third_party/blink/perf_tests/bindings/create-element.html

<!DOCTYPE html>
<html>
<body>
<script src="../resources/runner.js"></script>
<script>
PerfTestRunner.measureRunsPerSecond({
    description: "This benchmark covers 'createElement', 'createTextNode' and 'cloneNode' in Dromaeo/dom-modify.html, and other DOM methods that return a new Node object.",
    run: function() {
        for (var i = 0; i < 5000; i++)
            document.createElement("div");
}});
</script>
</body>
</html>