[[Include(wiki:802.11/beta-note)]]

[[TracNav(802.11/TOC)]]

{{{#!html
<script type="text/javascript" src="/js/flotr2.min.js"></script>
<script type="text/javascript" src="/js/mango_plots_util.js"></script>

<script type="text/javascript">
function track_fmt_len_v_xput(obj) {return 'PHY Rate: ' + obj.series.label + '<br>Payload: ' + Number(obj.x).toFixed(0) +' B<br>Throughput: ' + obj.y + ' Mbps';}
function track_fmt_rate_v_xput(obj) {return 'Flow: ' + obj.series.label + '<br>Throughput: ' + obj.y + ' Mbps';}
</script>


}}}

= 802.11 Reference Design: Benchmarks =

Placeholder page for eventual library of benchmarks of non-beta 802.11 ref design.

== Throughput vs. Payload Length ==
This test measures the achieved throughput of each PHY rate between two WARP v3 nodes running the 802.11 Reference Design. One node acts as AP, the other as a STA. Traffic is generated locally via the LTG framework; measurements are extracted from the nodes via WARPnet. The nodes' RF interfaces are connected via a coax cable and 50dB attenuation.

The plot below clearly illustrates increasing throughput with higher PHY rates and the decreasing impact of MAC overhead with increasing payload lengths.

{{{#!html
<div id="div_xput_rate_v_len" style="width:750px; height:420px"></div>
<a href="#" onClick="graph_xput_v_len.download.saveImage('png');">Download PNG</a>

<script type="text/javascript">
(function () {
	var container = document.getElementById('div_xput_rate_v_len');

	//Put data here:
var xput_6 = {label:"6 Mbps", data:[[32, 1.051], [83, 2.099], [133, 2.765], [184, 3.251], [234, 3.583], [285, 3.858], [336, 4.066], [386, 4.247], [437, 4.397], [488, 4.512], [538, 4.610], [589, 4.705], [639, 4.779], [690, 4.819], [741, 4.892], [791, 4.962], [842, 5.009], [893, 5.058], [943, 5.097], [994, 5.143], [1044, 5.173], [1095, 5.198], [1146, 5.218], [1196, 5.249], [1247, 5.279], [1298, 5.300], [1348, 5.321], [1399, 5.341], [1449, 5.360], [1500, 5.362]]};
var xput_9 = {label:"9 Mbps", data:[[32, 1.110], [83, 2.418], [133, 3.296], [184, 4.009], [234, 4.528], [285, 4.971], [336, 5.314], [386, 5.602], [437, 5.870], [488, 6.104], [538, 6.246], [589, 6.427], [639, 6.577], [690, 6.701], [741, 6.803], [791, 6.904], [842, 6.996], [893, 7.101], [943, 7.144], [994, 7.244], [1044, 7.301], [1095, 7.360], [1146, 7.402], [1196, 7.446], [1247, 7.512], [1298, 7.555], [1348, 7.594], [1399, 7.653], [1449, 7.697], [1500, 7.711]]};
var xput_12 = {label:"12 Mbps", data:[[32, 1.222], [83, 2.742], [133, 3.820], [184, 4.737], [234, 5.387], [285, 6.001], [336, 6.446], [386, 6.870], [437, 7.240], [488, 7.533], [538, 7.817], [589, 8.029], [639, 8.246], [690, 8.415], [741, 8.602], [791, 8.767], [842, 8.877], [893, 9.056], [943, 9.125], [994, 9.264], [1044, 9.319], [1095, 9.445], [1146, 9.509], [1196, 9.581], [1247, 9.689], [1298, 9.695], [1348, 9.828], [1399, 9.862], [1449, 9.934], [1500, 9.950]]};
var xput_18 = {label:"18 Mbps", data:[[32, 1.271], [83, 2.992], [133, 4.323], [184, 5.434], [234, 6.439], [285, 7.213], [336, 7.897], [386, 8.583], [437, 9.094], [488, 9.640], [538, 10.042], [589, 10.389], [639, 10.784], [690, 11.097], [741, 11.325], [791, 11.621], [842, 11.617], [893, 12.158], [943, 12.324], [994, 12.497], [1044, 12.735], [1095, 12.872], [1146, 13.024], [1196, 13.181], [1247, 13.300], [1298, 13.480], [1348, 13.599], [1399, 13.668], [1449, 13.827], [1500, 13.908]]};
var xput_24 = {label:"24 Mbps", data:[[32, 1.322], [83, 3.168], [133, 4.711], [184, 6.079], [234, 7.105], [285, 8.191], [336, 9.100], [386, 9.939], [437, 10.683], [488, 11.213], [538, 11.827], [589, 12.369], [639, 12.919], [690, 13.264], [741, 13.651], [791, 14.068], [842, 14.456], [893, 14.811], [943, 15.011], [994, 15.319], [1044, 15.635], [1095, 15.919], [1146, 16.035], [1196, 16.293], [1247, 16.549], [1298, 16.781], [1348, 16.963], [1399, 17.072], [1449, 17.237], [1500, 17.453]]};
var xput_36 = {label:"36 Mbps", data:[[32, 1.353], [83, 3.348], [133, 5.074], [184, 6.648], [234, 8.009], [285, 9.265], [336, 10.397], [386, 11.558], [437, 12.516], [488, 13.438], [538, 14.200], [589, 14.897], [639, 15.816], [690, 16.419], [741, 16.998], [791, 17.546], [842, 18.035], [893, 18.808], [943, 19.261], [994, 19.597], [1044, 20.029], [1095, 20.414], [1146, 20.787], [1196, 21.317], [1247, 21.683], [1298, 21.965], [1348, 22.221], [1399, 22.517], [1449, 22.894], [1500, 23.171]]};
var xput_48 = {label:"48 Mbps", data:[[32, 1.384], [83, 3.424], [133, 5.291], [184, 7.024], [234, 8.420], [285, 9.925], [336, 11.319], [386, 12.573], [437, 13.789], [488, 14.859], [538, 15.933], [589, 16.870], [639, 17.803], [690, 18.386], [741, 19.269], [791, 20.029], [842, 20.885], [893, 21.525], [943, 22.208], [994, 22.862], [1044, 23.498], [1095, 24.075], [1146, 24.410], [1196, 24.827], [1247, 25.362], [1298, 25.950], [1348, 26.384], [1399, 26.867], [1449, 27.254], [1500, 27.768]]};
var xput_54 = {label:"54 Mbps", data:[[32, 1.379], [83, 3.430], [133, 5.288], [184, 7.016], [234, 8.760], [285, 10.285], [336, 11.680], [386, 13.007], [437, 14.211], [488, 15.393], [538, 16.402], [589, 17.456], [639, 18.573], [690, 19.496], [741, 20.358], [791, 21.091], [842, 21.986], [893, 22.680], [943, 23.322], [994, 24.045], [1044, 24.859], [1095, 25.456], [1146, 26.098], [1196, 26.586], [1247, 27.086], [1298, 27.557], [1348, 28.053], [1399, 28.546], [1449, 29.267], [1500, 29.638]]};

var xlabel = "Payload Size (Bytes)";
var ylabel = "Achieved Throughput (Mbps)";
var title =  "802.11 Reference Design - Throughput vs Payload Length";
var subtitle =  "Design v0.6 - 50dB attenuation";
var x_range = [0, 1525];
var y_range = [0, 30];

	// Draw Graph
	graph_xput_v_len = Flotr.draw(container, [
		xput_6,
		xput_9,
		xput_12,
		xput_18,
		xput_24,
		xput_36,
		xput_48,
		xput_54,
	],
	{
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		subtitle: subtitle,
		HtmlText: false,
		resolution: 2,
		points: {show: true},
		lines: {show: true},
		mouse : {
			track : true,
			relative : true,
			margin : 10,
			trackFormatter: track_fmt_len_v_xput
		},
		yaxis : {
			min: y_range[0], 
			max: y_range[1],
			title: ylabel,
			titleAngle: "90",
			titleAlign: 'center',
			tickDecimals: 0,
		},
		xaxis : {
			title: xlabel,
			min: x_range[0], 
			max: x_range[1],
		},
		legend: {
			position: 'nw',
			backgroundColor: '#fff'
		}
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})();

</script>
}}}

== Competing Flows ==
This test measures the achieved throughput of two competing flows between two nodes. Each node sources a backlogged flow of max-length UDP packets for the other node. The contention between flows is managed by the 802.11 DCF.

Traffic for this experiment is generated using iperf on OS X machines connected to each node via 1Gb Ethernet.

The chart below shows this test for two hardware setups:
 * W3-to-W3: Two WARP v3 nodes each running the 802.11 Reference Design, one acting as AP, the other as a station
 * W3-to-WRT: One WARP v3 node connected to a Linksys WRT54G node. The WARP node acts as AP, the WRT54G as a station

In both configurations the devices' RF interfaces are connected by a coax cable and 50dB attenuation.

{{{#!html
<div id="div_xput_v_rate_multiFlow" style="width:750px; height:420px"></div>
<a href="#" onClick="graph_xput_v_rate_multiFlow.download.saveImage('png');">Download PNG</a>

<script type="text/javascript">

(function () {
	var container = document.getElementById('div_xput_v_rate_multiFlow');
	var i;

// \u2192: right-arrow
// \u21C4: left/right arrows

var bins = [6, 9, 12, 18, 24, 36, 48, 54];
var xput_w2l = {label:"W3 \u21C4 WRT", bar_offset: +0.2, data:[5.3, 7.7, 9.9, 13.9, 17.4, 23.1, 27.8, 29.6]};
var xput_w2w = {label:"W3 \u21C4 W3", bar_offset: -0.2, data:[5.2, 7.8, 9.8, 13.0, 16.0, 25.2, 26.8, 29.1]};

var x_ticks = [];
for(i=0; i<bins.length; i++) {
	x_ticks[i] = [i, bins[i]];
	xput_w2l.data[i] = [i+xput_w2l.bar_offset, xput_w2l.data[i], xput_w2l.data[i]-1, xput_w2l.data[i]+1];
	xput_w2w.data[i] = [i+xput_w2w.bar_offset, xput_w2w.data[i], xput_w2w.data[i]-1, xput_w2w.data[i]+1];
}

var xlabel = "PHY Rate (Mbps)";
var ylabel = "Achieved Throughput (Mbps)";
var title =  "802.11 Reference Design - Throughput vs PHY Rate - Placeholder Data!";
var subtitle =  "Design v0.6 - 50dB attenuation";
var x_range = [-1, 8];
var y_range = [0, 30];
var barWidth = 0.35;


	// Draw Graph
	graph_xput_v_rate_multiFlow = Flotr.draw(container, [
		xput_w2l,
		xput_w2w,
	],
	{
		title: title,
		subtitle: subtitle,
		HtmlText: false,
		resolution: 2,
		points: {show: false},
		lines: {show: false},
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		candles: {
			show: true,
			candleWidth : 0,
			wickLineWidth: 2,
			upFillColor: '#000',
			downFillColor: '#000'
		},
		bars: {
			show: true,
			barWidth: barWidth,
			fillOpacity: 1,
		},
		mouse : {
			track : true,
			relative : true,
			margin : 10,
			trackFormatter: track_fmt_rate_v_xput,
		},
		yaxis : {
			min: y_range[0], 
			max: y_range[1],
			title: ylabel,
			titleAngle: "90",
			titleAlign: 'center',
			tickDecimals: 0
		},
		xaxis : {
			title: xlabel,
			min: x_range[0], 
			max: x_range[1],
			ticks: x_ticks
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		legend: {
			position: 'nw',
			backgroundColor: '#fff'
		}
	});
})();

</script>
}}}