Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964867AbWBMU6z (ORCPT ); Mon, 13 Feb 2006 15:58:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964870AbWBMU6z (ORCPT ); Mon, 13 Feb 2006 15:58:55 -0500 Received: from dsl027-180-168.sfo1.dsl.speakeasy.net ([216.27.180.168]:7135 "EHLO sunset.davemloft.net") by vger.kernel.org with ESMTP id S964867AbWBMU6x (ORCPT ); Mon, 13 Feb 2006 15:58:53 -0500 Date: Mon, 13 Feb 2006 12:57:58 -0800 (PST) Message-Id: <20060213.125758.42483359.davem@davemloft.net> To: mingo@elte.hu Cc: heiko.carstens@de.ibm.com, hare@suse.de, linux-kernel@vger.kernel.org Subject: Re: calibrate_migration_costs takes ages on s390 From: "David S. Miller" In-Reply-To: <20060213105421.GB17173@elte.hu> References: <20060213102634.GA4677@osiris.boeblingen.de.ibm.com> <20060213.023430.126649129.davem@davemloft.net> <20060213105421.GB17173@elte.hu> X-Mailer: Mew version 4.2.53 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 662 Lines: 14 From: Ingo Molnar Date: Mon, 13 Feb 2006 11:54:21 +0100 > Do things get better if you fill out include/asm-sparc64/system.h's > sched_cacheflush() function, to flush the L2 cache? That should at least > make the cache state more or less reproducable across runs. Yes, I tried to implement that, and it makes the migration cost calculation take 4 to 5 times longer, so I'm leaving it unimplemented. - 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/