Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932346AbVISHKp (ORCPT ); Mon, 19 Sep 2005 03:10:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932348AbVISHKp (ORCPT ); Mon, 19 Sep 2005 03:10:45 -0400 Received: from noname.neutralserver.com ([70.84.186.210]:41169 "EHLO noname.neutralserver.com") by vger.kernel.org with ESMTP id S932346AbVISHKo (ORCPT ); Mon, 19 Sep 2005 03:10:44 -0400 Date: Mon, 19 Sep 2005 10:13:58 +0300 From: Dan Aloni To: Francois Romieu Cc: Linux Kernel List , netdev@vger.kernel.org, Nick Piggin Subject: Re: workaround large MTU and N-order allocation failures Message-ID: <20050919071358.GA7107@localdomain> References: <20050918143526.GA24181@localdomain> <20050918230822.GA5440@electric-eye.fr.zoreil.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050918230822.GA5440@electric-eye.fr.zoreil.com> User-Agent: Mutt/1.5.10i X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - noname.neutralserver.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - monatomic.org X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 943 Lines: 24 On Mon, Sep 19, 2005 at 01:08:22AM +0200, Francois Romieu wrote: > Dan Aloni : > [...] > > The problem with large MTU is external memory fragmentation in > > the buddy system following high workload, causing alloc_skb() to > > fail. > > If the issue hits the Rx path, it is probably the responsibility of > the device driver. Which kind of hardware do you use ? We are using a SuperMicro board and the network driver is e1000. The revision of the chipset is 82546GB-copper (maps to e1000_82546_rev_3). This particular chipset does not support packet splitting, so we are looking for a hack on the skb layer. -- Dan Aloni da-x@monatomic.org, da-x@colinux.org, da-x@gmx.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/