From owner-freebsd-net@FreeBSD.ORG Sat May 7 09:35:23 2005 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 012B316A4DA for ; Sat, 7 May 2005 09:35:23 +0000 (GMT) Received: from us.svf.stuba.sk (us.svf.stuba.sk [147.175.16.9]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3E42E43D70 for ; Sat, 7 May 2005 09:35:22 +0000 (GMT) (envelope-from md@us.svf.stuba.sk) Received: from us.svf.stuba.sk (localhost [127.0.0.1]) by us.svf.stuba.sk (8.13.3/8.13.3) with ESMTP id j479ZGkg082789; Sat, 7 May 2005 11:35:21 +0200 (CEST) (envelope-from md@us.svf.stuba.sk) Received: (from md@localhost) by us.svf.stuba.sk (8.13.3/8.13.3/Submit) id j479ZA8M082788; Sat, 7 May 2005 11:35:10 +0200 (CEST) (envelope-from md) Date: Sat, 7 May 2005 11:35:10 +0200 From: Marian Durkovic To: Kris Kennaway Message-ID: <20050507093510.GA82158@us.svf.stuba.sk> References: <20050505133250.GA73885@us.svf.stuba.sk> <20050506065950.GA1999@us.svf.stuba.sk> <20050507043712.GB28373@xor.obsecurity.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050507043712.GB28373@xor.obsecurity.org> User-Agent: Mutt/1.4.2.1i X-Virus-Scanned: ClamAV 0.83/871/Thu May 5 15:50:45 2005 on us.svf.stuba.sk X-Virus-Status: Clean X-Spam-Status: No, score=-2.8 required=5.0 tests=ALL_TRUSTED autolearn=failed version=3.0.2 X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on us.svf.stuba.sk cc: freebsd-net@freebsd.org Subject: Re: SOLVED: Degraded TCP performace on Intel PRO/1000 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 May 2005 09:35:23 -0000 > > To achieve wirespeed performance, the TX FIFO must be large enough to > > accomodate 2 jumbo packets (not just 1 as the driver was assuming). > > There was also a typo in the driver, causing the PBA tuning on most > > cards to be non-functional. > > > > Please be sure to use em driver version 1.7.41 or newer, either from > > the CVS (branch RELENG_4_11) or from Intel's downloads. > > Does this also apply to 5.x and above? If no-one else responds in the > next few days, can you please submit the patch in PR so it does not > get lost? > > Kris All the CVS branches of if_em.c have the same bugs in the packet buffer (PBA) code, so yes, the patch applies to all releases. M.