From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kelvin Ku Subject: Re: RX performance degradation with e1000e in Linux 2.6.31 / F12 Date: Wed, 10 Feb 2010 17:13:20 -0500 Message-ID: <20100210221320.GA7373@ti94.telemetry-investments.com> References: <20100210182404.GB6160@ti94.telemetry-investments.com> <4B73016F.5050106@cchtml.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: e1000-devel@lists.sourceforge.net, netdev@vger.kernel.org To: Community support for Fedora users Return-path: Received: from gw1a.telemetry-investments.com ([64.20.161.180]:48684 "EHLO sv1.telemetry-investments.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756586Ab0BJWNV (ORCPT ); Wed, 10 Feb 2010 17:13:21 -0500 Content-Disposition: inline In-Reply-To: <4B73016F.5050106@cchtml.com> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, Feb 10, 2010 at 12:56:47PM -0600, Michael Cronenworth wrote: > Kelvin Ku wrote: > > After upgrading from Linux 2.6.30 (Fedora Core 11) to 2.6.31 (F12), I am > > experiencing significant packet loss on an Intel 82574L NIC running on the > > e1000e driver. I was not experiencing this with kernel 2.6.30. I notice 2.6.30 > > uses e1000e version 0.3.3.4-k4 whereas 2.6.31 uses version 1.0.2-k2. > > And the driver version would be the significance. It appears there are > (very) serious issues with the e1000e driver and the 82574L chip. I'm > having to use 2.6.30 on a F12 server with an 82574L to have network > connectivity at all. The issue has been reported[1] and it is being > investigated. We had a hard time convincing Intel it wasn't a > motherboard manufacturer problem. > > [1] > http://sourceforge.net/tracker/?func=detail&aid=2908463&group_id=42302&atid=447449 > -- > users mailing list > users@lists.fedoraproject.org > To unsubscribe or change subscription options: > https://admin.fedoraproject.org/mailman/listinfo/users > Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines > Note that my RX performance issue arises with the latest Intel e1000e driver, 1.1.2-NAPI, and an older Intel driver, 0.5.18.3-NAPI, as well. I can't get an even older version of the driver, 0.4.1.7, to compile on Linux 2.6.31, probably because the kernel API has changed since that driver was released. - Kelvin