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authorDerrell Lipman <derrell@samba.org>2006-12-30 05:09:59 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 14:30:29 -0500
commit1170417ceeb8c49a46cda522a38eaa71c9cae30c (patch)
treedbf4c3fdcdb1af928dbd55f642ea40f00d09283a /webapps/qooxdoo-0.6.3-sdk/frontend/demo/source/html/performance/LocalObject_2.html
parent23ccdca41670085da4486841b0d4900b4c8b02f3 (diff)
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r20414: Start to make SWAT usable by others. This is just a start...
(This used to be commit 26a34037a7ca6fbd05c5a6f7c2d5973e34bc6918)
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+<html>
+<head>
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+ <title>qooxdoo &raquo; Demo</title>
+ <link type="text/css" rel="stylesheet" href="../../resource/css/layout.css"/>
+ <!--[if IE]>
+ <link type="text/css" rel="stylesheet" href="../../resource/css/layout_ie.css"/>
+ <![endif]-->
+ <script type="text/javascript" src="../../script/qx.js"></script>
+</head>
+<body>
+ <script type="text/javascript" src="../../script/layout.js"></script>
+
+ <div id="demoDescription">
+ <p>JS Object Storage Performance</p>
+
+ <h1>Test Description</h1>
+ <p>Precreate 50.000 objects (locally stored). After this create 10.000 new (not stored) objects inside a loop.</p>
+ <p>As the loop will be executed inside the scope of "store", the browser must keep the information about "store" with each execution of "test", even if called from the timeout.</p>
+
+ <h1>Result</h1>
+ <p>The performance in IE is poor (~1150ms for each loop), compared to the same stuff executed without so much precreated objects (previous example).</p>
+ <p>It makes no difference if we use a global or a local variable here. It's identical to GlobalObject_2.html.</p>
+ </div>
+
+ <script type="text/javascript">
+ qx.core.Init.getInstance().defineMain(function()
+ {
+ var store = [];
+
+ for (var i=0; i<50000; i++) {
+ store.push({});
+ };
+
+ function test()
+ {
+ var _s = (new Date).valueOf();
+
+ for (var i=0; i<10000; i++) {
+ new Object()
+ };
+
+ window.status = "time: " + (new Date).valueOf() + " | measured: " + ((new Date).valueOf() - _s) + "ms";
+ window.setTimeout(test, 1000);
+ }
+
+ test();
+ });
+ </script>
+</body>
+</html>