From owner-freebsd-questions@FreeBSD.ORG Sat Sep 8 14:35:31 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 21EE316A417 for ; Sat, 8 Sep 2007 14:35:31 +0000 (UTC) (envelope-from joao.barros@gmail.com) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.190]) by mx1.freebsd.org (Postfix) with ESMTP id AAEDC13C457 for ; Sat, 8 Sep 2007 14:35:30 +0000 (UTC) (envelope-from joao.barros@gmail.com) Received: by nf-out-0910.google.com with SMTP id k4so556903nfd for ; Sat, 08 Sep 2007 07:35:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=FECBD8cJBQNsTnCQ5NVaBihnPOIQygdZ5x7hcxK3L7Q=; b=XZNPn9gJ1aVgDEM58lypDFuBC+ehboIbd6D+Y91RtS3rGNKIDQkZyeEIps8+4PRYhbjGb3dVTYqDwFBzDuJZHPaTz4Yze8esPewOGE41K35tEUUrDvOsRhEnK6U+UjflxFcNNsm/5lU4LUjoHHe5ciwitXar/22++o6SZ2b7S5Y= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=VDJCGpSeuqJ0+U/MmgufMOfzt17B6vCwXYuwNtSdceH/J7HXeColjtkLiS19GFQUlNpDjUVzVRpYVJEMr6Qd/KqH/wF5aeqN664ADtPoCfC9Fye6disrs7LaWre+O14bDHkh3zJrmE0tlG9pxBzj5i5s6dsk1URX3cOWFEo5ycY= Received: by 10.78.177.3 with SMTP id z3mr1115549hue.1189262126237; Sat, 08 Sep 2007 07:35:26 -0700 (PDT) Received: by 10.78.187.16 with HTTP; Sat, 8 Sep 2007 07:35:25 -0700 (PDT) Message-ID: <70e8236f0709080735p1e60453cp435f58127c7a35fd@mail.gmail.com> Date: Sat, 8 Sep 2007 15:35:25 +0100 From: "Joao Barros" To: "Bahman M." In-Reply-To: <46E2AEA8.4060403@adempiere.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <46E2AEA8.4060403@adempiere.org> Cc: freebsd-questions@freebsd.org 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 14:35:31 -0000 On 9/8/07, Bahman M. wrote: > Hi all, > > I have an ADSL connection at home. > > When I'm _uploading_ files the whole upload bandwidth is consumed; so > far so good. > > But when _downloading_ no more than 30~40% of download bandwidth is > consumed. > > The guys in the ISP say they've granted me the requested bandwidth but > this is not what I see in action. > > How may I know the real bandwidth limits of my connection? Any tool or > trick? Or maybe I'm misunderstanding something about ADSL bandwidth? First of all you have to take into account that with an ADSL connection, I'm guessing PPPoE, you have overhead due to protocol tunnelling. Next you must verify that you don't max out your upload while testing download speed. From my tests, up to 90% upload bandwidth usage is safe and shows no impact on download performance. And for last, use multiple download sources as only one may not be enough. Find http or ftp mirrors close to you (on your ISP for ex) and start downloading multiple ISOs for example. Note: Make sure the device taking care of the PPPoE connection is powerful enough to support your bandwidth. For example, I still have a Linksys WRT54GL as router and I can easily see 100% cpu usage and load >1 and thus I can't use my max contracted bandwidth. Use the modem or a powerful enough machine running FreeBSD of course :) -- Joao Barros