We made some analysis about Powerboost in our SIGCOMM paper<div>and it looks like a couple of TBFs with different bucket sizes (then not just one shaping rate).</div><div>From our results ~5MB is the bucket size for upstream and ~10MB for downstream.</div>
<div><br></div><div>It shouldn&#39;t be too difficult to setup a such htb.</div><div>Probably, to better model its real behavior. the analysis should be extended to a wider set of users.</div><div><br></div><div>The related patent (US 7,289,447 B2) clearly says that its behavior can be </div>
<div>dynamically changed depending on the network conditions.</div><div><br></div><div>-Walter<br><br><div class="gmail_quote">2011/7/7 Dave Taht <span dir="ltr">&lt;<a href="mailto:dave.taht@gmail.com">dave.taht@gmail.com</a>&gt;</span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">It would be good to be able to have a working htb model of powerboost.<br>
<br>
---------- Forwarded message ----------<br>
From: elided<br>
Date: Thu, Jul 7, 2011 at 1:10 PM<br>
Subject: Comcast Powerboost parameters<br>
To: Dave Taht &lt;<a href="mailto:dave.taht@gmail.com">dave.taht@gmail.com</a>&gt;, Jim Gettys &lt;<a href="mailto:jg@freedesktop.org">jg@freedesktop.org</a>&gt;<br>
<br>
<br>
Well, I poked around a bit and found the information was a little<br>
harder to find than I remembered.<br>
Here are three data points, none of them seem to be completely definitive:<br>
<a href="http://customer.comcast.com/Pages/FAQListViewer.aspx?topic=Internet&amp;folder=8b2fc392-4cde-4750-ba34-051cd5feacf0" target="_blank">http://customer.comcast.com/Pages/FAQListViewer.aspx?topic=Internet&amp;folder=8b2fc392-4cde-4750-ba34-051cd5feacf0</a><br>

…hopefully that URL will work for you.  Click on How long does the<br>
PowerBoost burst last.  It indicates 5MB upstream token bucket burst.<br>
<a href="http://www.dslreports.com/faq/14520" target="_blank">http://www.dslreports.com/faq/14520</a><br>
…Indicates 10MB upstream token bucket burst<br>
<a href="http://www.cc.gatech.edu/~partha/shaperprobe-TR.pdf" target="_blank">http://www.cc.gatech.edu/~partha/shaperprobe-TR.pdf</a><br>
…table 2 indicates 5 or 10 MB depending on service tier.<br>
<br>
Seems as though it is likely either 5MB or 10MB.  A fairly simple test<br>
could validate which one your connection has.<br>
-Greg<br>
<br>
<br>
<br>
--<br>
Dave Täht<br>
SKYPE: davetaht<br>
US Tel: 1-239-829-5608<br>
<a href="http://the-edge.blogspot.com" target="_blank">http://the-edge.blogspot.com</a><br>
_______________________________________________<br>
Bismark-devel mailing list<br>
<a href="mailto:Bismark-devel@lists.bufferbloat.net">Bismark-devel@lists.bufferbloat.net</a><br>
<a href="https://lists.bufferbloat.net/listinfo/bismark-devel" target="_blank">https://lists.bufferbloat.net/listinfo/bismark-devel</a><br>
_______________________________________________<br>
bismark-devel mailing list<br>
<a href="mailto:bismark-devel@projectbismark.net">bismark-devel@projectbismark.net</a><br>
<a href="http://lists.noise.gatech.edu/listinfo/bismark-devel" target="_blank">http://lists.noise.gatech.edu/listinfo/bismark-devel</a><br>
<br>
</blockquote></div><br><br clear="all"><br>-- <br>Walter de Donato, PhD Student<br>Dipartimento di Informatica e Sistemistica<br>Università  degli Studi di Napoli &quot;Federico II&quot;<br>Via Claudio 21 -- 80125 Napoli (Italy)<br>
Phone: +39 081 76 83821 - Fax: +39 081 76 83816<br>Email: <a href="mailto:walter.dedonato@unina.it" target="_blank">walter.dedonato@unina.it</a><br>WWW: <a href="http://wpage.unina.it/walter.dedonato" target="_blank">http://wpage.unina.it/walter.dedonato</a><br>
<br>
</div>