From owner-freebsd-questions@FreeBSD.ORG Mon Dec 21 19:03:02 2009 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 35E81106568D for ; Mon, 21 Dec 2009 19:03:02 +0000 (UTC) (envelope-from materribile@yahoo.com) Received: from web110314.mail.gq1.yahoo.com (web110314.mail.gq1.yahoo.com [67.195.8.214]) by mx1.freebsd.org (Postfix) with SMTP id 07B748FC19 for ; Mon, 21 Dec 2009 19:03:01 +0000 (UTC) Received: (qmail 77068 invoked by uid 60001); 21 Dec 2009 19:03:01 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1261422181; bh=vV90MuAri1ADLscM6JUOlpY5hxYVmeFMAK7z+UQt+pc=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=1aEX+6Sd0vWoorVcovYKdtC+/BFLT4gotNU5dlFU6VymL5LHt3WiKdtzE/FhfLUMRhm7pB+sSqcqvp6A154PWUUGvO0nnPmOItbQD1gWDJtFFkrDutSz9ERHYydlu0NFnhvKGhXwGqLNccpzlr+PwtymL/ifHveNbMgrufWQwZc= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=XRNmQs0rg6JMFhGHmC0ds/SuWd30Ybn1w4ZNj+9NOALWhQUz4AP9QZQGQuI3AcYVMq6OW+HgPKUi8dHFf5G3NZiOylvMiPjuooa0H4yd4CdLDlggnljkupTFaPIntBCdw4bVJsBVj7+3ZOnJQBbPJOR+H6ljpp+4BjB0q+7A/Do=; Message-ID: <561383.76354.qm@web110314.mail.gq1.yahoo.com> X-YMail-OSG: lzJ0Rq4VM1kyDMpjCoWL4MUr6YrNbPfebJfqdkZonSX5S8NSWIk.DLQR2HKrTSAEI9.elJ8R9V6zdbutLJ9Jv_jDlfTUrLYURZe_SV02.81e9au.CDI1crFwvlL7mN8s8mpKgCvDZYqvkcjPZTHLfjy.UVjH0mvRnASpTyF3qqbGe0jheZ4GHDcqi9Ks6tl4IyY4jNBXTtxtrM6zcybFdMQLDKqvpjGcV.lS.3hif3NfKA_jaWEC3A3rCrJrnsL2N43V0EsGpuy4DoJ8uP.XlEO5_nI0AZ3Zw4Mn0ibetevkTSC0o_gafymA.2QXUPayMoLRw4I5Bbk4vlNsmWuqP6mrR5m989kcANaFVwnhXEoPH0efbY_AeQ6K Received: from [24.228.57.153] by web110314.mail.gq1.yahoo.com via HTTP; Mon, 21 Dec 2009 11:03:01 PST X-Mailer: YahooMailClassic/9.0.19 YahooMailWebService/0.8.100.260964 Date: Mon, 21 Dec 2009 11:03:01 -0800 (PST) From: Mark Terribile To: freebsd-questions@freebsd.org In-Reply-To: <20091221032919.738AB1065713@hub.freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: debugging slow network 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: Mon, 21 Dec 2009 19:03:02 -0000 > From: Anton Shterenlikht > Subject: debugging slow network <20091220132250.GA94754@mech-cluster241.men.bris.ac.uk> > I seem to have a very slow network connection at work. > All local switches are supposed to be gigabit, and my > network card is gigabit as well. But download speed > seems to be much lower. > > I'm not a networks person, but I understand there could > many factors affecting the speed. There appear to be > a multitute of different network related commands > just in base OS. Which should I start with to get > some idea of the actual network speed? netstat? > And should I be looking for? You might also check that all your cables are Cat5e or Cat6. If you have a Category 4 cable in there somewhere it could be causing errors and retries or forcing the network interfaces to revert to a lower speed after enough errors.