Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756160AbZCSNp2 (ORCPT ); Thu, 19 Mar 2009 09:45:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754272AbZCSNpK (ORCPT ); Thu, 19 Mar 2009 09:45:10 -0400 Received: from one.firstfloor.org ([213.235.205.2]:54268 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752311AbZCSNpJ (ORCPT ); Thu, 19 Mar 2009 09:45:09 -0400 Date: Thu, 19 Mar 2009 14:45:40 +0100 From: Andi Kleen To: Sven-Thorsten Dietrich Cc: David Miller , ghaskins@novell.com, vernux@us.ibm.com, andi@firstfloor.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, pmullaney@novell.com Subject: Re: High contention on the sk_buff_head.lock Message-ID: <20090319134540.GW11935@one.firstfloor.org> References: <49C16D7C.3080003@novell.com> <20090318.180355.228447835.davem@davemloft.net> <1237425191.8204.41.camel@quadrophenia.thebigcorporation.com> <20090318.181713.62394874.davem@davemloft.net> <1237427007.8204.55.camel@quadrophenia.thebigcorporation.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1237427007.8204.55.camel@quadrophenia.thebigcorporation.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 608 Lines: 15 > Do we have to rule-out per-CPU queues, that aggregate into a master > queue in a batch-wise manner? TSO/GSO/USO is that actually in a very specific way. It batches packets into larger packets and then less per packet locks need to be taken. It was unclear if that was used in this workload or not. -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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/