From owner-freebsd-questions@FreeBSD.ORG  Sun Apr  5 12:08:17 2009
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id DAA52106564A
	for <freebsd-questions@freebsd.org>;
	Sun,  5 Apr 2009 12:08:17 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl
	[IPv6:2001:4070:101:2::1])
	by mx1.freebsd.org (Postfix) with ESMTP id A7BCB8FC12
	for <freebsd-questions@freebsd.org>;
	Sun,  5 Apr 2009 12:08:16 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1])
	by wojtek.tensor.gdynia.pl (8.14.3/8.14.3) with ESMTP id n35C89aX022911;
	Sun, 5 Apr 2009 14:08:09 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from localhost (wojtek@localhost)
	by wojtek.tensor.gdynia.pl (8.14.3/8.14.3/Submit) with ESMTP id
	n35C89mI022908; Sun, 5 Apr 2009 14:08:09 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Date: Sun, 5 Apr 2009 14:08:09 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Martin Schweizer <office@pc-service.ch>
In-Reply-To: <20090405085834.GL72129@saturn.pcs.ms>
Message-ID: <alpine.BSF.2.00.0904051404080.22885@wojtek.tensor.gdynia.pl>
References: <20090405085834.GL72129@saturn.pcs.ms>
User-Agent: Alpine 2.00 (BSF 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: freebsd-questions@freebsd.org
Subject: Re: ipfw: bandwidth limiting
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 05 Apr 2009 12:08:18 -0000

> [snip]
> $ipfwcmd pipe 1 config bw 80KByte/s
> $ipfwcmd add pipe 1 ip from any to 192.168.10.0/24{100-254} via em1
> [snip]
>
> I'm not sure it works. When I do a large download which takes long and
> anybody else want download too, this download will only get a reduce
> bandwidth. I expect that the second download get same rate as the first one
> (and reduce the bandwidth from the first one). Is that correct?

your example limits it all to 80kB/s but does no traffic management. so it 
may get the same rate (half by half) or may not.


do

$ipfwcmd pipe 1 config bw 80kByte/s
$ipfwcmd queue 1 config pipe 1 weight 1  mask dst-ip 0xffffffff
$ipfwcmd add queue 1 ip from any to 192.168.10.0/24{100-254} via em1

this will limit them to 80kB/s and perform fair-sharing based of hosts.

for example if one user on one computer will start 100 downloads, and 
other on other computer will start 1 download, this will ensure that first 
user will not takeover most bandwidth.