View source for Network interface bandwidth measurement

==Tools installation==
* On your host, install ''iperf'' tool (here on Debian/Ubuntu like system):
<pre class="host">
$ sudo apt-get install iperf
</pre>
* Install it on your target too:
<pre class="host">
$ make menuconfig
</pre>
<pre class="config">
Package Selection for the target  --->
    Networking  --->
        [*]   iperf
</pre>

==Test==
===APF server, Host client===
* On your target:
<pre class="apf">
$ iperf -s -i 2
</pre>
* On your host (192.168.1.10 is the IP of your APF):
<pre class="host">
$ iperf -c 192.168.1.10 -i 2
</pre>
====Current APF27 results====
Linux 2.6.29, direct connection (cross-over cable); asked TCP window size of 16k, got 32k:
 -> 82-83 Mbits/sec

===Host server, APF client===
* On your host:
<pre class="host">
$ iperf -s -i 2
</pre>
* On your target (192.168.1.2 is the IP of your Host):
<pre class="apf">
$ iperf -c 192.168.1.2 -i 2
</pre>
====Current APF27 results====
Linux 2.6.29, direct connection (cross-over cable); asked TCP window size of 16k, got 32k:
 -> 57-58 Mbits/sec

===Increase window size===
* add ''-w100k'' (for example 100kB) to both server and client command.

==Links==
* [http://iperf.sourceforge.net/ iperf project website]
* http://fr.wikipedia.org/wiki/Iperf

[[Category:Network]]