<html>
<head>
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>
google.load('visualization', '1', {packages:['gauge']});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Label', 'Value'],
['CPU', 80]
]);
var options = {
width: 400, height: 120,
redFrom: 90, redTo: 100,
yellowFrom:80, yellowTo: 90,
minorTicks: 5
};
var chart = new google.visualization.Gauge(document.getElementById('chart_div'));
chart.draw(data, options);
setInterval(function() {
data.setValue(0, 1, 40 + Math.round(20 * Math.random()));
chart.draw(data, options);
}, 1300);
setInterval(function() {
data.setValue(1, 1, 40 + Math.round(20 * Math.random()));
chart.draw(data, options);
}, 2000);
}
</script>
</head>
<body>
<div id='chart_div'></div>
</body>
</html>
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