Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757987AbZGCTzF (ORCPT ); Fri, 3 Jul 2009 15:55:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755150AbZGCTy4 (ORCPT ); Fri, 3 Jul 2009 15:54:56 -0400 Received: from one.firstfloor.org ([213.235.205.2]:51793 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754508AbZGCTyz (ORCPT ); Fri, 3 Jul 2009 15:54:55 -0400 Date: Fri, 3 Jul 2009 21:54:58 +0200 From: Andi Kleen To: Matthew Wilcox Cc: Jens Axboe , Andi Kleen , linux-kernel@vger.kernel.org, "Styner, Douglas W" , Chinang Ma , "Prickett, Terry O" , Matthew Wilcox , Eric.Moore@lsi.com, DL-MPTFusionLinux@lsi.com Subject: Re: >10% performance degradation since 2.6.18 Message-ID: <20090703195458.GK2041@one.firstfloor.org> References: <20090703025607.GK5480@parisc-linux.org> <87skhdaaub.fsf@basil.nowhere.org> <20090703185414.GP23611@kernel.dk> <20090703191321.GO5480@parisc-linux.org> <20090703192235.GV23611@kernel.dk> <20090703194557.GQ5480@parisc-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090703194557.GQ5480@parisc-linux.org> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 603 Lines: 16 > That would seem to be a fruitful avenue of > investigation -- whether limiting the cards to a single RX/TX interrupt > would be advantageous, or whether spreading the eight interrupts out > over the CPUs would be advantageous. The kernel should really do the per cpu binding of MSIs by default. -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/