From owner-freebsd-hackers  Sat Jun 20 08:16:54 1998
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To: Brian Somers <brian@Awfulhak.org>
Cc: bmah@california.sandia.gov,
        Open Systems Networking <opsys@mail.webspan.net>,
        spork <spork@super-g.com>, Joel Ray Holveck <joelh@gnu.org>,
        root@bmccane.maxbaud.net, hackers@FreeBSD.ORG
Subject: Re: TweakDUN 
In-Reply-To: Your message of "Sat, 20 Jun 1998 12:20:14 BST."
             <199806201120.MAA01601@awfulhak.org> 
From: bmah@CA.Sandia.GOV (Bruce A. Mah)
Reply-To: bmah@CA.Sandia.GOV
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If memory serves me right, Brian Somers wrote:

> > Where you *do* lose is the fact that for each of those packets, you have 40
>  
> > bytes of headers (20 IP + 20 TCP) that you can't lose for data.  So you can
>  
> > use 1460/1500 = 97% of the bytes in a packet for "real data", or 536/576 = 
> 93% 
> > of the bytes.  (Again, discounting link-level framing overheads.)
> [.....]
> 
> And turning on VJ compression just about negates this overhead.

D'oh!  You're absolutely right, of course.  Sigh...

Bruce.




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