実行結果
Safari 4.0.3
userAgent=Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; ja-jp) AppleWebKit/531.9 (KHTML, like Gecko) Version/4.0.3 Safari/531.9
Start testing workers for 3 times. n=100000000
worker result=4999999950000000, elapsed=3.805
worker result=4999999950000000, elapsed=3.781
worker result=4999999950000000, elapsed=3.78
elapsedAverage=3.789
Chromium 4.0.202.0 r23297
userAgent=Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/4.0.202.0 Safari/532.0
Start testing workers for 3 times. n=100000000
worker result=4999999950000000, elapsed=1.734
worker result=4999999950000000, elapsed=1.652
worker result=4999999950000000, elapsed=1.658
elapsedAverage=1.681
Chrome 3.0.198.1
userAgent=Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/3.0.198 Safari/532.0
Start testing workers for 3 times. n=100000000
worker result=4999999950000000, elapsed=1.735
worker result=4999999950000000, elapsed=1.655
worker result=4999999950000000, elapsed=1.654
elapsedAverage=1.681
Firefox 3.5.2
userAgent=Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; ja-JP-mac; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2
Start testing workers for 3 times. n=100000000
worker result=4999999950000000, elapsed=0.589
worker result=4999999950000000, elapsed=0.439
worker result=4999999950000000, elapsed=0.438
elapsedAverage=0.489
動作環境
- 機種 ID
- MacBook5,1
- プロセッサ名
- Intel Core 2 Duo
- プロセッサ速度
- 2 GHz
ソース
- sum.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Web worker sample</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="stopwatch.js"></script>
<script type="text/javascript">
$(function() {
var worker = new Worker("sum.js"),
n = 100000000,
tryCount = 3,
tryIndex = 0,
stopwatch = new Stopwatch();
function log(message) {
$('#result').append(message + '<br>');
}
log('userAgent=' + navigator.userAgent);
log('Start testing workers for ' + tryCount + ' times. n=' + n);
worker.onmessage = function(event) {
stopwatch.stop();
log('worker result=' + event.data + ', elapsed=' + stopwatch.elapsedTime());
if (++tryIndex < tryCount) {
startTry();
}
else {
log('elapsedAverage=' + stopwatch.elapsedTimeAverage().toFixed(3));
}
}
worker.onerror = function(event) {
log("worker error: " + event.data);
}
function startTry() {
stopwatch.start();
worker.postMessage('' + n);
}
startTry();
});
</script>
</head>
<body>
<div id="result"></div>
</body>
</html>
- sum.js
onmessage = function(event) {
var n = parseInt(event.data);
var sum = 0;
for (var i = 0; i < n; i++) {
sum += i;
}
postMessage('' + sum);
}
- stopwatch.js
function Stopwatch() {
this.elapsedTimes = [];
}
Stopwatch.prototype.start = function() {
this.startTime = new Date();
}
Stopwatch.prototype.stop = function() {
this.stopTime = new Date();
var time = (this.stopTime.getTime() - this.startTime.getTime()) / 1000;
this.elapsedTimes.push(time);
}
Stopwatch.prototype.elapsedTime = function() {
return this.elapsedTimes[this.elapsedTimes.length - 1];
}
Stopwatch.prototype.elapsedTimeAverage = function() {
var n = this.elapsedTimes.length,
total = 0;
for (var i = 0; i < n; i++) {
total += this.elapsedTimes[i];
}
return total / n;
}
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