From owner-freebsd-questions@FreeBSD.ORG Sat Sep 8 20:47:49 2007 Return-Path: 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 37BF516A4A7 for ; Sat, 8 Sep 2007 20:47:49 +0000 (UTC) (envelope-from fbsd06@mlists.homeunix.com) Received: from mxout-03.mxes.net (mxout-03.mxes.net [216.86.168.178]) by mx1.freebsd.org (Postfix) with ESMTP id 009C713C469 for ; Sat, 8 Sep 2007 20:47:48 +0000 (UTC) (envelope-from fbsd06@mlists.homeunix.com) Received: from gumby.homeunix.com. (unknown [87.81.140.128]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.mxes.net (Postfix) with ESMTP id 3A6265194F; Sat, 8 Sep 2007 16:47:47 -0400 (EDT) Date: Sat, 8 Sep 2007 21:47:44 +0100 From: RW To: freebsd-questions@freebsd.org Message-ID: <20070908214744.03710ef8@gumby.homeunix.com.> In-Reply-To: <46E305BA.3040604@tundraware.com> References: <46E2AEA8.4060403@adempiere.org> <70e8236f0709080735p1e60453cp435f58127c7a35fd@mail.gmail.com> <46E2BCB2.9010909@adempiere.org> <84b68b3d0709081225x4fb929fck38a3265846f7b8ba@mail.gmail.com> <46E305BA.3040604@tundraware.com> X-Mailer: Claws Mail 3.0.0 (GTK+ 2.10.14; i386-portbld-freebsd6.2) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: tundra@tundraware.com Subject: Re: ADSL Bandwidth Monitoring X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 Sep 2007 20:47:49 -0000 On Sat, 08 Sep 2007 15:27:38 -0500 Tim Daneliuk wrote: > Amitabh Kant wrote: > > On 9/8/07, Bahman M. wrote: > >> I tested the connection by downloading 2~3 files simultaneously > >> and used 'bmon' as Mel suggested in another reply (thanks to > >> him). As I'd already guessed the RX don't get bigger than 30~40% > >> of the expected bandwidth. I performed the test with some other > >> files and there was no difference. > >> > >> Thanks, > >> > >> Bahman > > > > The bandwidth being advertised by your ISP would be the maximum > > thoughput allowed on your DSL lines with multiple DSL users sharing > > the same bandwidth, something that is generally known as contention > > ratio. > > > > See this link: > > http://en.wikipedia.org/wiki/Contention_ratio > > > > Amitabh > > But you should be able to hit the advertised bandwidth. To the best > of my knowledge, DSL itself is NOT a shared medium. It is a point-to- > point technology from your premise to the Central Office. The > bandwidth *behind* the CO may be shared, but should be so large > as to not be a bottleneck. It depends on your circumstances. Some people are constrained by contention ratio some aren't. Some ISPs offer a better ratio for a more expensive accounts.