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From: "Sascha Reissner" <sascha.reissner@toxicnet.de>
To: Antony Stone <Antony@Soft-Solutions.co.uk>,
	netfilter@lists.netfilter.org
Subject: Re: Setting and Routing on the TOS Source (SRC) and Destination (DST) Bits
Date: Sun, 22 Sep 2002 16:15:15 +0200	[thread overview]
Message-ID: <001d01c26242$79813670$026410ac@honor> (raw)
In-Reply-To: 20020922134852.PSNX6699.mta01-svc.ntlworld.com@there

From: "Antony Stone" <Antony@Soft-Solutions.co.uk>

> On Sunday 22 September 2002 2:35 pm, Jim Fleming wrote:
>
> > Have you ever calculated how much bandwidth is wasted each year
> > with 4 of the 160 bits in every packet as useless ?
>
> Actually, it's 4 of every 160 bits in the *header* - there's up to another
> 1500 *bytes* (on ethernet) of body in the packet as well, so the wasted
> bandwidth varies from 4/160 = 2.5% for empty packets, to 4/12160 = 0.03%
for
> full ones.
>
> Most people are going to have full packets in one direction (the direction
> that's got saturated bandwidth), and empty ACK packets in the other
direction
> (which has oodles of bandwidth to spare because all the packets are
empty).
>
> Therefore I think 0.03% wasted bandwidth on a full link, and 2.5% wasted
on a
> virtually idle link are very acceptable.
>
> Antony.


i guess 1 more offtopic mails like this compensates all "useless header
overhead" per user for a year.



  reply	other threads:[~2002-09-22 14:15 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-20 12:23 Iptables bandwidth limit Rob Sterenborg
2002-09-20 12:35 ` Andrei Ivanov
2002-09-20 19:46   ` Oskar Andreasson
2002-09-21 13:25     ` Setting and Routing on the TOS Source (SRC) and Destination (DST) Bits Jim Fleming
2002-09-21 13:38       ` Andrei Ivanov
2002-09-21 13:52       ` Antony Stone
2002-09-21 21:53         ` Jim Fleming
2002-09-21 21:59           ` Antony Stone
2002-09-21 23:15             ` Jim Fleming
2002-09-22  8:21               ` Antony Stone
2002-09-22 10:25                 ` Sascha Reissner
2002-09-22 10:35                   ` Antony Stone
2002-09-22 13:54                   ` Jim Fleming
2002-09-22 13:35                 ` Jim Fleming
2002-09-22 13:48                   ` Antony Stone
2002-09-22 14:15                     ` Sascha Reissner [this message]
2002-09-22 14:20                       ` Antony Stone
2002-09-22 15:18                         ` Jim Fleming
2002-09-22 14:39                     ` Jim Fleming
2002-09-21 21:56         ` Jim Fleming
2002-09-21 22:01           ` Antony Stone
2002-09-21 22:57         ` Jim Fleming

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