From owner-freebsd-performance@FreeBSD.ORG Sat Jun 28 16:57:45 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5AB3137B401 for ; Sat, 28 Jun 2003 16:57:45 -0700 (PDT) Received: from craig.afraid.org (h24-69-213-234.cc.shawcable.net [24.69.213.234]) by mx1.FreeBSD.org (Postfix) with ESMTP id AC6014401A for ; Sat, 28 Jun 2003 16:57:44 -0700 (PDT) (envelope-from craig@craig.afraid.org) Received: from fireball.internal.lan ([10.0.0.2] helo=fireball) by craig.afraid.org with smtp (Exim 4.20) id 19WPZh-0005wG-0w; Sat, 28 Jun 2003 16:57:45 -0700 Message-ID: <000901c33dd1$12268780$0200000a@fireball> From: "Craig Reyenga" To: "David Gilbert" References: <20030628190036.0E06B37B405@hub.freebsd.org> <000f01c33dad$1595a0f0$e602a8c0@flatline> <16126.9805.829406.368426@canoe.velocet.net> Date: Sat, 28 Jun 2003 16:57:45 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 cc: freebsd-performance@freebsd.org Subject: Re: Tuning Gigabit X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Craig Reyenga List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Jun 2003 23:57:45 -0000 From: "David Gilbert" > >>>>> "Ivan" == Ivan Voras writes: > > >> Message: 5 Date: Sat, 28 Jun 2003 13:43:46 +0200 From: "Simon > >> L. Nielsen" Subject: Re: Tuning Ggiabit > >> Message-ID: <20030628114342.GB401@nitro.dk> Content-Type: > >> text/plain; charset="us-ascii" > > >>> I've been trying to get my gigabit link to run as fast as > >>> possible, but I have run out of ideas. I've documented (though not > >>> very well) what I have done thus far: > >>> > >>> http://craig.afraid.org/a/b?page=computer/gigabit > >>> > >>> If there is any more I can do besides what I have already done, I > >>> would love to hear it. Please avoid suggestions that require > >>> spending money. > > Ivan> This is probably an obsolete suggestion, but have you increased > Ivan> HZ when you turned on NIC polling? (the web page doesn't mention > Ivan> it) > > Unfortunately you may have a motherboard that maxes at 300 megabit. > Our recent testing of Gigabit NICs found more than 75% of the > motherboards we tried unable to pass more than 500 megabit and 25% of > the motherboards wouldn't pass more than 100 megabit. > > 300 megabit is about where 32bit 33Mhz PCI maxes out. > > Dave. > > -- Could you tell me a little more about your tests? What boards, and what configuration? -Craig > ============================================================================ > |David Gilbert, Velocet Communications. | Two things can only be | > |Mail: dgilbert@velocet.net | equal if and only if they | > |http://daveg.ca | are precisely opposite. | > =========================================================GLO================