Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763437AbXFRR1g (ORCPT ); Mon, 18 Jun 2007 13:27:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751107AbXFRR13 (ORCPT ); Mon, 18 Jun 2007 13:27:29 -0400 Received: from e36.co.us.ibm.com ([32.97.110.154]:49752 "EHLO e36.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751235AbXFRR12 (ORCPT ); Mon, 18 Jun 2007 13:27:28 -0400 Date: Mon, 18 Jun 2007 23:05:58 +0530 From: Srivatsa Vaddagiri To: Christoph Lameter Cc: "Paul E. McKenney" , Ingo Molnar , Thomas Gleixner , Dinakar Guniguntala , Dmitry Adamushko , suresh.b.siddha@intel.com, pwil3058@bigpond.net.au, linux-kernel@vger.kernel.org, akpm@linux-foundation.org Subject: Re: v2.6.21.4-rt11 Message-ID: <20070618173558.GA17865@linux.vnet.ibm.com> Reply-To: vatsa@linux.vnet.ibm.com References: <20070613185522.GA27335@elte.hu> <20070613233910.GJ8125@linux.vnet.ibm.com> <20070615144535.GA12078@elte.hu> <20070615151452.GC9301@linux.vnet.ibm.com> <20070615195545.GA28872@elte.hu> <20070616011605.GH9301@linux.vnet.ibm.com> <20070616084434.GG2559@linux.vnet.ibm.com> <20070616161213.GA2994@linux.vnet.ibm.com> <20070618151215.GA9750@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 877 Lines: 21 On Mon, Jun 18, 2007 at 09:54:18AM -0700, Christoph Lameter wrote: > The nodes-level domain looks for internode balances between up to 16 > nodes. It is not restricted to a single node. I was mostly speaking with the example system in mind (4-node 4-cpu box), but yes, node-level domain does look for imbalance across max 16 nodes as you mention. Both node and all-node domains don't have SD_BALANCE_NEWIDLE set, which means idle_balance() will stop looking for imbalance beyonds its own node. Based on the observed balance within its own node, IMO, idle_balance() should not cause ->next_balance to be reset. -- Regards, vatsa - 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/