<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Peng Wang</b> <span dir="ltr"><<a href="mailto:wangpeng19834@gmail.com">wangpeng19834@gmail.com</a>></span><br>
Date: Thu, Feb 19, 2009 at 11:22 AM<br>Subject: Confusing result of the throughput in wireless network with different UDP packet length.<br>To: "<a href="mailto:netperf-feedback@netperf.org">netperf-feedback@netperf.org</a>" <<a href="mailto:netperf-feedback@netperf.org">netperf-feedback@netperf.org</a>><br>
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<p><span lang="EN-US">Hi!<br></span></p><p><span lang="EN-US">I did a benchmark of throughput in wireless
network with different UDP packet size. The UDP packet size is from 2K bytes to
40k bytes. The MTU is set to be 2348 bytes.</span></p>
<p><span lang="EN-US">The benchmark platform I use contains two buffalo
wireless g router. One router is the sender, and one is the receiver. The
operating system in them is Linux with 2.4.7 version kernel.</span></p>
<p><span lang="EN-US">The result of the benchmark confuses me. From
the following figure we can see that the throughput is highest when the UDP
packet size is about 20k<span></span><span> </span>bytes which is much
bigger than the MTU. I guess it is because of the buffer in the system, but I
am not quite sure. Do you see it before? Could you explain it?</span></p><p><br><span lang="EN-US"></span></p><p><span lang="EN-US">regards,</span></p><p><span lang="EN-US">Peng<br>
</span></p>
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