From owner-freebsd-net@FreeBSD.ORG Tue Dec 15 03:14:34 2009 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 EFCC3106572D; Tue, 15 Dec 2009 03:14:34 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: from qw-out-2122.google.com (qw-out-2122.google.com [74.125.92.27]) by mx1.freebsd.org (Postfix) with ESMTP id 7343E8FC14; Tue, 15 Dec 2009 03:14:33 +0000 (UTC) Received: by qw-out-2122.google.com with SMTP id 9so866126qwb.7 for ; Mon, 14 Dec 2009 19:14:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:received:from:date:to:cc :subject:message-id:reply-to:references:mime-version:content-type :content-disposition:in-reply-to:user-agent; bh=S/6PfnXrlu4XzpIT5Zch2zaqDlMxYEUITXpUjoOgrZE=; b=cKYkFRXUWS4hBFpgsh20kBLtCirDY6KY1+yATTWHrzdhS6soATT+daeOGPpA6kiFLx eveAJ5zfyjZUF4gO6HOq/cvJ6JSh7E/HsTN0z7G46YEjcODNXtD/NPptWaKii5lnwp0u PpdXXIZ1v1SGkysbW2LFu+Oxdb52+gqfhuzqU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:date:to:cc:subject:message-id:reply-to:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=Rbp4TCKoxUmZmZ5rhl39kHdRy4Zl0hUPvuQj6Yc4r3BOLy1O2VM+uDIZa8pg9FjQ84 mdfW1bLuOb3E0lF8vEdh4izqUKv2j3qgcURWXAIlcG/zFfekxPgFxMaJT3hhY4u2EIal GFeeYWgtTw0VKE0kBCEbvAdcd9lGPpo7b6yIE= Received: by 10.224.109.141 with SMTP id j13mr3544643qap.84.1260846872982; Mon, 14 Dec 2009 19:14:32 -0800 (PST) Received: from pyunyh@gmail.com ([174.35.1.224]) by mx.google.com with ESMTPS id 7sm13581886qwb.2.2009.12.14.19.14.26 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 14 Dec 2009 19:14:31 -0800 (PST) Received: by pyunyh@gmail.com (sSMTP sendmail emulation); Mon, 14 Dec 2009 19:14:16 -0800 From: Pyun YongHyeon Date: Mon, 14 Dec 2009 19:14:16 -0800 To: Carey Jones Message-ID: <20091215031416.GE1122@michelle.cdnetworks.com> References: <200912142238.nBEMcbT4080874@freefall.freebsd.org> <77e6ee410912141536i7731618xe8ec0553ac5c4956@mail.gmail.com> <20091215010641.GD1122@michelle.cdnetworks.com> <77e6ee410912141858w2395cefcrcd689ba0f028aec6@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <77e6ee410912141858w2395cefcrcd689ba0f028aec6@mail.gmail.com> User-Agent: Mutt/1.4.2.3i Cc: freebsd-net@freebsd.org, yongari@freebsd.org Subject: Re: kern/141276: [vge] Strange behavior with vge gigabit ethernet adapter X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: pyunyh@gmail.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Dec 2009 03:14:35 -0000 On Mon, Dec 14, 2009 at 08:58:19PM -0600, Carey Jones wrote: > Hello, > > The version from HEAD seems to work better than any of the previous patches > I've tried, though it still doesn't seem to get quite the throughput that > the adapter managed under RELENG_7. Unfortunately I don't have any > quantitative data for you. However, the symptoms from my pr are definitely > gone. > Glad to hear that. I have strong evidence that the vge(4) can't saturate the link for any frame size. I still have no idea why it shows poor TX performance(about 650Mbps) compared to RX(about 930Mbps). The best performance number I can get from my local patch was about 800Mbps which is still very lower than any other gigabit controllers. I'm working on it with various scenarios but I couldn't find clue. > Thanks,