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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I understand, but the client iperf “window” setting (-w 64KB) is really the send buffer so only 64KB was attempted to be in-flight (not 4MB).<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Are we in sync?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Barry<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> detlef.bosau@web.de [mailto:detlef.bosau@web.de] <br><b>Sent:</b> Wednesday, August 17, 2011 2:47 PM<br><b>To:</b> end2end-interest@postel.org<br><b>Cc:</b> Barry Constantine<br><b>Subject:</b> Re: [e2e] TCP Performance with Traffic Policing<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On 08/17/2011 08:17 PM, Barry Constantine wrote: <o:p></o:p></p><pre>I just did not want the receiving side (server) to limit the performance.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>The RWIN does "dip" as the server receives data, but the advertised maximum was 4M.<o:p></o:p></pre><p class=MsoNormal><br>Hm. May I quote your original post?<br><br><br><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'>50 msec RTT and bottleneck bandwidth = 10 Mbps, <b>so BDP was 62,000 bytes.</b></span><o:p></o:p></p><p class=MsoNormal><br>Could this be a clue?<br><br>-- <br><br><o:p></o:p></p><pre>------------------------------------------------------------------<o:p></o:p></pre><pre>Detlef Bosau<o:p></o:p></pre><pre>Galileistraße 30 <o:p></o:p></pre><pre>70565 Stuttgart Tel.: +49 711 5208031<o:p></o:p></pre><pre> mobile: +49 172 6819937<o:p></o:p></pre><pre> skype: detlef.bosau <o:p></o:p></pre><pre> ICQ: 566129673<o:p></o:p></pre><pre><a href="mailto:detlef.bosau@web.de">detlef.bosau@web.de</a> <a href="http://www.detlef-bosau.de">http://www.detlef-bosau.de</a><o:p></o:p></pre><pre>------------------------------------------------------------------<o:p></o:p></pre><pre><o:p> </o:p></pre></div></body></html>