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From: marco ghidinelli <marcogh@linux.it>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] TCP window based shaping
Date: Wed, 09 Feb 2005 11:34:44 +0000	[thread overview]
Message-ID: <20050209113444.GA11322@circolab.net> (raw)
In-Reply-To: <42095013.8030600@wildgooses.com>

On Tue, Feb 08, 2005 at 11:49:39PM +0000, Ed Wildgoose wrote:
> Does anyone have any pointers on how other people have implemented tcp 
> window adjustment to do bandwidth shaping?
> 
> Granted the basic idea is to set the window size to be RTT * bandwidth, 
> but a quick squiz at google turns up mostly papers on how to implement 
> this at the sender end with a view to some new magic TCP 
> implementation.  I'm really interested in notes on how to implement at 
> the router side, perhaps with a view to writing a new QOS module.
> 
> Biggest issue I can see right now is an architecture one, ie monitoring 
> the incoming packet rate and then applying that to the outgoing ACK 
> packets.

instead of shaping the incoming traffic and estimate rate from the
outgoing traffic, you can 'delay' the outgoing ACK, and estimate the rate
from the raise of the sequence number.

so you just shape on the outgoing queue, without take care of the
incoming traffic.

note that everything here is patented, so if you must have lawyers, if
you want to develop..

:-/

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2Fsearch-bool.html&r=0&f=S&lP&TERM1=packeteer&FIELD1=&co1=AND&TERM2=&FIELD2=&d=ptxt

-- 
BOFH excuse #33:

pizeo-electric interference
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  parent reply	other threads:[~2005-02-09 11:34 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-02-08 23:49 [LARTC] TCP window based shaping Ed Wildgoose
2005-02-08 23:57 ` David Boreham
2005-02-09  1:59 ` Andy Furniss
2005-02-09 11:34 ` marco ghidinelli [this message]
2005-02-09 22:38 ` Andy Furniss
2005-02-11  2:57 ` Ed Wildgoose
2005-02-11 11:05 ` marco ghidinelli
2005-02-11 18:18 ` Ed Wildgoose
2005-02-11 23:45 ` Ed Wildgoose
2005-02-12  2:16 ` Andy Furniss
2005-02-12 13:19 ` Andy Furniss
2005-02-13  0:46 ` Ed Wildgoose
2005-02-14  0:27 ` marco ghidinelli
2005-02-14  0:38 ` marco ghidinelli
2005-02-15 22:33 ` Andy Furniss
2005-02-15 22:54 ` Andy Furniss
2005-02-16 14:52 ` Ed Wildgoose
2005-02-17  3:45 ` gypsy
2005-02-17 14:09 ` Ed Wildgoose
2005-03-12 10:10 ` Ow Mun Heng
2005-03-15 15:24 ` Ed Wildgoose
2005-03-16  7:46 ` Ow Mun Heng
2005-07-09  4:01 ` Don Cohen
2005-07-10 19:55 ` Andy Furniss
2005-07-12  1:50 ` TAKANO Ryousei
2005-07-12  8:46 ` Andy Furniss
2005-07-12 13:44 ` TAKANO Ryousei

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