From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751876AbYJSRGU (ORCPT ); Sun, 19 Oct 2008 13:06:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751508AbYJSRGM (ORCPT ); Sun, 19 Oct 2008 13:06:12 -0400 Received: from electric-eye.fr.zoreil.com ([213.41.134.224]:50573 "EHLO electric-eye.fr.zoreil.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751475AbYJSRGL (ORCPT ); Sun, 19 Oct 2008 13:06:11 -0400 Date: Sun, 19 Oct 2008 19:05:11 +0200 From: Francois Romieu To: Joe Harvell Cc: linux-kernel@vger.kernel.org Subject: Re: sw-iommu leak with Ethernet jumbo frames and nfs Message-ID: <20081019170511.GA21266@electric-eye.fr.zoreil.com> References: <48FA5BDC.6070108@dogpad.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48FA5BDC.6070108@dogpad.net> X-Organisation: Land of Sunshine Inc. User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Joe Harvell : > I noticed a problem with SW-IOMMU allocation failures when using NFS over > my PCI Ethernet network interface using jumbo frames. I think it's a leak, > rather than under-engineered because the problem only happens when using > NFS and jumbo frames. When I run netperf at a much higher data rate over > the NIC, I don't see any problems. Also, I think it's a leak because the > problem still occurrs very quickly even when I double the SW-IOMMU heap [...] > The Ethernet controller is an on-board Realtek R8110SC using driver r8169. This was fixed before 2.6.27 as commit a866bbf6aacf95f849810079442a20be118ce905. Thanks for the detailled bug report. -- Ueimor