Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754276AbYKDOp6 (ORCPT ); Tue, 4 Nov 2008 09:45:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751915AbYKDOpu (ORCPT ); Tue, 4 Nov 2008 09:45:50 -0500 Received: from netops-testserver-3-out.sgi.com ([192.48.171.28]:36769 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751193AbYKDOpu (ORCPT ); Tue, 4 Nov 2008 09:45:50 -0500 Date: Tue, 4 Nov 2008 08:45:49 -0600 From: Dimitri Sivanich To: Peter Zijlstra Cc: Gregory Haskins , linux-kernel@vger.kernel.org, Ingo Molnar Subject: Re: RT sched: cpupri_vec lock contention with def_root_domain and no load balance Message-ID: <20081104144549.GC30855@sgi.com> References: <20081103210748.GC9937@sgi.com> <1225751603.7803.1640.camel@twins> <490FC735.1070405@novell.com> <49105D84.8070108@novell.com> <1225809393.7803.1669.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1225809393.7803.1669.camel@twins> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 654 Lines: 14 On Tue, Nov 04, 2008 at 03:36:33PM +0100, Peter Zijlstra wrote: > Or are folks disabling load-balance bottom-up, instead of top-down? > > In that case, I think we should dis-allow that. If what you mean by "disabling load-balance bottom-up" is disabling load-balance in the root cpuset before disabling it in the leaves, in the end it does not matter which way you do it, the setup winds up being the same. -- 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/