From owner-freebsd-net@FreeBSD.ORG Fri Mar 12 09:58:31 2010 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 48B181065672 for ; Fri, 12 Mar 2010 09:58:31 +0000 (UTC) (envelope-from rihad@mail.ru) Received: from mx33.mail.ru (mx33.mail.ru [94.100.176.47]) by mx1.freebsd.org (Postfix) with ESMTP id 024AF8FC17 for ; Fri, 12 Mar 2010 09:58:30 +0000 (UTC) Received: from [217.25.27.27] (port=27922 helo=[217.25.27.27]) by mx33.mail.ru with asmtp id 1Nq1dV-000Gnp-00; Fri, 12 Mar 2010 12:58:29 +0300 Message-ID: <4B9A104A.6070509@mail.ru> Date: Fri, 12 Mar 2010 13:58:34 +0400 From: rihad User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Jack Vogel References: <4B99114E.7060909@mail.ru> <2a41acea1003110942u717e2222hd984bd2859c3e477@mail.gmail.com> <4B9938F1.7090906@mail.ru> <2a41acea1003111056k42d9a188x3310bcedd2ae9e6a@mail.gmail.com> In-Reply-To: <2a41acea1003111056k42d9a188x3310bcedd2ae9e6a@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam: Not detected X-Mras: Ok Cc: freebsd-net@freebsd.org Subject: Re: ixgbe input errors at high data rates X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Mar 2010 09:58:31 -0000 Jack Vogel wrote: > The difference between things being tweaked vs not is quite dramatic, > like getting only 2 or 3 Gb versus getting 9.5 when properly set up. > The multiqueue stack support in 8.0 is part of the equation, and in > 7.X you wont have that. > Any other tweaks beyond using the bleeding edge driver? Sysctls? Kernel config? Does ixgbe in 8.0 support polling? I don't like the irq thread chewing up all the CPU core time on input. Won't the outgoing card fall on its knees with dummynet's burst spikes? Thanks :)