<!DOCTYPE html>
<html>
<head>
<title>VNC Performance Benchmark</title>
</head>
<body>
Passes: <input id='passes' style='width:50' value=3>
<input id='startButton' type='button' value='Start' style='width:100px'
onclick="do_test();" disabled>
<br><br>
Results:<br>
<textarea id="messages" style="font-size: 9;" cols=80 rows=15></textarea>
<br><br>
<div id="VNC_screen">
<div id="VNC_status_bar" class="VNC_status_bar" style="margin-top: 0px;">
<table border=0 width=100%><tr>
<td><div id="VNC_status">Loading</div></td>
</tr></table>
</div>
<canvas id="VNC_canvas" width="640px" height="20px">
Canvas not supported.
</canvas>
</div>
</body>
<!--
<script type='text/javascript'
src='http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js'></script>
-->
<script type="text/javascript">
var INCLUDE_URI= "../include/";
// TODO: Data file should override
var VNC_frame_encoding = "base64";
</script>
<script src="../include/util.js"></script>
<script src="../include/playback.js"></script>
<script src="../data/multi.js"></script>
<script>
// Load supporting scripts
Util.load_scripts(["webutil.js", "base64.js", "websock.js", "des.js",
"keysymdef.js", "keyboard.js", "input.js", "display.js",
"jsunzip.js", "rfb.js"]);
var start_time, VNC_frame_data, pass, passes, encIdx,
encOrder = ['raw', 'rre', 'hextile', 'tightpng', 'copyrect'],
encTot = {}, encMin = {}, encMax = {},
passCur, passTot, passMin, passMax;
function msg(str) {
console.log(str);
var cell = $D('messages');
cell.innerHTML += str + "\n";
cell.scrollTop = cell.scrollHeight;
}
function dbgmsg(str) {
if (Util.get_logging() === 'debug') {
msg(str);
}
}
updateState = function (rfb, state, oldstate, mesg) {
switch (state) {
case 'failed':
case 'fatal':
msg("noVNC sent '" + state +
"' state during pass " + pass +
", iteration " + iteration +
" frame " + frame_idx);
test_state = 'failed';
break;
case 'loaded':
$D('startButton').disabled = false;
break;
}
if (typeof mesg !== 'undefined') {
$D('VNC_status').innerHTML = mesg;
}
}
function do_test() {
$D('startButton').value = "Running";
$D('startButton').disabled = true;
mode = 'perftest'; // full-speed
passes = $D('passes').value;
pass = 1;
encIdx = 0;
// Render each encoding once for each pass
iterations = 1;
// Initialize stats counters
for (i = 0; i < encOrder.length; i++) {
enc = encOrder[i];
encTot[i] = 0;
encMin[i] = 2<<23; // Something sufficiently large
encMax[i] = 0;
}
passCur = 0;
passTot = 0;
passMin = 2<<23;
passMax = 0;
// Fire away
next_encoding();
}
function next_encoding() {
var encName;
if (encIdx >= encOrder.length) {
// Accumulate pass stats
if (passCur < passMin) {
passMin = passCur;
}
if (passCur > passMax) {
passMax = passCur;
}
msg("Pass " + pass + " took " + passCur + " ms");
passCur = 0;
encIdx = 0;
pass += 1;
if (pass > passes) {
// We are finished
// Shut-off event interception
rfb.get_mouse().ungrab();
rfb.get_keyboard().ungrab();
$D('startButton').disabled = false;
$D('startButton').value = "Start";
finish_passes();
return; // We are finished, terminate
}
}
encName = encOrder[encIdx];
dbgmsg("Rendering pass " + pass + " encoding '" + encName + "'");
VNC_frame_data = VNC_frame_data_multi[encName];
iteration = 0;
start_time = (new Date()).getTime();
next_iteration();
}
// Finished rendering current encoding
function finish() {
var total_time, end_time = (new Date()).getTime();
total_time = end_time - start_time;
dbgmsg("Encoding " + encOrder[encIdx] + " took " + total_time + "ms");
passCur += total_time;
passTot += total_time;
// Accumulate stats
encTot[encIdx] += total_time;
if (total_time < encMin[encIdx]) {
encMin[encIdx] = total_time;
}
if (total_time > encMax[encIdx]) {
encMax[encIdx] = total_time;
}
encIdx += 1;
next_encoding();
}
function finish_passes() {
var i, enc, avg, passAvg;
msg("STATS (for " + passes + " passes)");
// Encoding stats
for (i = 0; i < encOrder.length; i++) {
enc = encOrder[i];
avg = (encTot[i] / passes).toFixed(1);
msg(" " + enc + ": " + encTot[i] + " ms, " +
encMin[i] + "/" + avg + "/" + encMax[i] +
" (min/avg/max)");
}
// Print pass stats
passAvg = (passTot / passes).toFixed(1);
msg("\n All passes: " + passTot + " ms, " +
passMin + "/" + passAvg + "/" + passMax +
" (min/avg/max)");
}
window.onscriptsload = function() {
var i, enc;
dbgmsg("Frame lengths:");
for (i = 0; i < encOrder.length; i++) {
enc = encOrder[i];
dbgmsg(" " + enc + ": " + VNC_frame_data_multi[enc].length);
}
rfb = new RFB({'target': $D('VNC_canvas'),
'onUpdateState': updateState});
rfb.testMode(send_array, VNC_frame_encoding);
}
</script>
</html>