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Re: [tcpm] Some comments on 2581bis

Mark Allman <mallman@icir.org> Wed, 14 February 2007 18:07 UTC

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To: John Heffner <jheffner@psc.edu>
From: Mark Allman <mallman@icir.org>
Subject: Re: [tcpm] Some comments on 2581bis
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> The notion of the sender "using" SACK is a bit fuzzy anyway, since
> some stacks will send the options but not process them in any
> meaningful way (writing scoreboard code is hard).

This is getting a little better.  Contrast the 2000 and 2004 results on
actual SACK usage (not just sending them) in the paper below.  Still not
stunning in 2004, but at least it was on the rise and hopefully it has
continued to be.

allman



Alberto Medina, Mark Allman, Sally Floyd.  Measuring the Evolution of
Transport Protocols in the Internet.  ACM Computer Communication Review,
35(2), April 2005. 
http://www.icir.org/mallman/papers/tcp-evo-ccr05.ps





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