Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750785Ab3JNEif (ORCPT ); Mon, 14 Oct 2013 00:38:35 -0400 Received: from mga02.intel.com ([134.134.136.20]:36004 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750722Ab3JNEie convert rfc822-to-8bit (ORCPT ); Mon, 14 Oct 2013 00:38:34 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.93,489,1378882800"; d="scan'208";a="418679772" From: Andi Kleen To: Neil Horman Cc: linux-kernel@vger.kernel.org, sebastien.dugue@bull.net, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org Subject: Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's References: <1381510298-20572-1-git-send-email-nhorman@tuxdriver.com> Date: Sun, 13 Oct 2013 21:38:33 -0700 In-Reply-To: <1381510298-20572-1-git-send-email-nhorman@tuxdriver.com> (Neil Horman's message of "Fri, 11 Oct 2013 12:51:38 -0400") Message-ID: <87siw4xy9i.fsf@tassilo.jf.intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 712 Lines: 19 Neil Horman writes: > Sébastien Dugué reported to me that devices implementing ipoib (which don't have > checksum offload hardware were spending a significant amount of time computing Must be an odd workload, most TCP/UDP workloads do copy-checksum anyways. I would rather investigate why that doesn't work. That said the change looks reasonable, but may not fix the root cause. -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/