PerformanceTests/Intl/datetimeformat-format-all-options.html

<!DOCTYPE html>
<body>
<script src="../resources/runner.js"></script>
<script>
var count = 0;
var format = new Intl.DateTimeFormat('am-ET-u-nu-ethi-ca-ethiopic-amete-alem', {
    localeMatcher: 'best fit',
    timeZone: 'Africa/Addis_Ababa',
    hour12: true,
    formatMatcher: 'best fit',
    weekday: 'long',
    era: 'long',
    year: 'numeric',
    month: 'long',
    day: 'numeric',
    hour: 'numeric',
    minute: '2-digit',
    second: '2-digit',
    timeZoneName: 'long'
});
var DAY_IN_MS = 24 * 60 * 60 * 1000;

PerfTestRunner.measureRunsPerSecond({run() {
    format.format(count++ * DAY_IN_MS);
}});
</script>
</body>