Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754070AbXFKPjW (ORCPT ); Mon, 11 Jun 2007 11:39:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752590AbXFKPjM (ORCPT ); Mon, 11 Jun 2007 11:39:12 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:39322 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752567AbXFKPjK (ORCPT ); Mon, 11 Jun 2007 11:39:10 -0400 Date: Mon, 11 Jun 2007 17:38:55 +0200 From: Ingo Molnar To: "Paul E. McKenney" Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Thomas Gleixner , Dinakar Guniguntala Subject: Re: v2.6.21.4-rt11 Message-ID: <20070611153855.GA21136@elte.hu> References: <20070609210507.GA29194@elte.hu> <20070611011954.GG27982@linux.vnet.ibm.com> <20070611073634.GB32446@elte.hu> <20070611144401.GA9102@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070611144401.GA9102@linux.vnet.ibm.com> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.0.3 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 751 Lines: 19 * Paul E. McKenney wrote: > > hm, what affinity do they start out with? Could they all be pinned > > to CPU#0 by default? > > They start off with affinity masks of 0xf on a 4-CPU system. I would > expect them to load-balance across the four CPUs, but they stay all on > the same CPU until long after I lose patience (many minutes). ugh. Would be nice to figure out why this happens. I enabled rcutorture on a dual-core CPU and all the threads are spread evenly. Ingo - 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/