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Thanks for pointing out horst.<br>
<br>
I've been trying wireshark io graphs such as:<br>
retry comparison: wlan.fc.retry==0 (line) to wlan.fc.retry==1
(impulse)<br>
beacon delays: wlan.fc.type_subtype==0x08 AVG
frame.time_delta_displayed<br>
<br>
I've uploaded my pcap files, netperf-wrapper results and lanforge
script reports which have some aggregate graphs below all of the pie
charts. The pcap files with 64sta in the name correspond to the
script reports.<br>
<br>
candelatech.com/downloads/wifi-reports/trial1<br>
<br>
I'll upload more once I try the qdisc suggestions and I'll generate
comparison plots.<br>
<br>
Isaac<br>
<br>
<div class="moz-cite-prefix">On 03/27/2015 10:21 AM, Aaron Wood
wrote:<br>
</div>
<blockquote
cite="mid:CALQXh-M-G3C9XyFw3aJ=UmSPnwO76Gc88v8L9K=T2=jYr_9jyA@mail.gmail.com"
type="cite">
<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Mar 27, 2015 at 8:08 AM,
Richard Smith <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:smithbone@gmail.com" target="_blank">smithbone@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Using
horst I've discovered that the major reason our WiFi
network sucks is because 90% of the packets are sent at
the 6mbit rate. Most of the rest show up in the 12 and
24mbit zone with a tiny fraction of them using the higher
MCS rates.<br>
<br>
Trying to couple the radiotap info with the packet
decryption to discover the sources of those low-bit rate
packets is where I've been running into difficulty. I can
see the what but I haven't had much luck on the why.<br>
<br>
I totally agree with you that tools other than wireshark
for analyzing this seem to be non-existent.</blockquote>
<div><br>
</div>
<div>Using the following filter in Wireshark should get you
all that 6Mbps traffic: </div>
<div><br>
</div>
<div>radiotap.datarate == 6</div>
<div><br>
</div>
<div>Then it's pretty easy to dig into what those are (by
wifi frame-type, at least). At my network, that's mostly
broadcast traffic (AP beacons and whatnot), as the
corporate wifi has been set to use that rate as the
broadcast rate.</div>
<div><br>
</div>
<div>without capturing the WPA exchange, the contents of the
data frames can't be seen, of course.</div>
<div><br>
</div>
<div>-Aaron</div>
</div>
</div>
</div>
</blockquote>
<br>
<br>
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