gecko-dev/tools/performance/startup/startup-test.html

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<!-- This Source Code Form is subject to the terms of the Mozilla Public
- License, v. 2.0. If a copy of the MPL was not distributed with this
- file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
<!-- Pick off begin time as a cgi argument and print it out -->
<html>
<!-- call this with an arg, e.g. file://foo/startup-test.html?begin=12345678 -->
<!-- In-line this to avoid compilation. -->
<body onload="
var now = (new Date()).getTime();
var begin = document.location.search.split('=')[1]; // ?begin=nnnnn
var startupTime = now - begin;
document.write('\n\nStartup time = ' + startupTime + ' ms<br>');
if (window.dump) {
dump('\n\n__startuptime,' + startupTime + '\n\n');
}
">
</body>
</html>