Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758067AbXEYIh2 (ORCPT ); Fri, 25 May 2007 04:37:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752427AbXEYIhV (ORCPT ); Fri, 25 May 2007 04:37:21 -0400 Received: from holomorphy.com ([66.93.40.71]:55881 "EHLO holomorphy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752321AbXEYIhT (ORCPT ); Fri, 25 May 2007 04:37:19 -0400 Date: Fri, 25 May 2007 01:38:13 -0700 From: William Lee Irwin III To: Ingo Molnar Cc: Andi Kleen , Satyam Sharma , Andrew Morton , linux-kernel@vger.kernel.org, Peter Zijlstra Subject: Re: [patch] i386, numaq: enable TSCs again Message-ID: <20070525083813.GA19966@holomorphy.com> References: <20070525071005.GA6431@elte.hu> <20070525073158.GB8094@one.firstfloor.org> <20070525073957.GA15207@elte.hu> <20070525074316.GA16821@elte.hu> <20070525074915.GA18400@elte.hu> <20070525075446.GA20140@elte.hu> <20070525080827.GA22399@elte.hu> <20070525081944.GZ31925@holomorphy.com> <20070525083153.GA27236@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070525083153.GA27236@elte.hu> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 960 Lines: 22 * William Lee Irwin III wrote: >> I remember. It was far beyond "slightly async;" they would drift >> minutes apart during reasonable amounts of uptime, though it would >> take at least several days to drift so far (I don't recall how long it >> took). On Fri, May 25, 2007 at 10:31:53AM +0200, Ingo Molnar wrote: > yes, that's what i meant under 'slightly async'. Some AMD CPUs are like > that too and sched_clock() now handles that fine. So we should try my > patch. Sorry, then. I took slight to mean something else. In any event I was only quantifying things. I've no opinion whatsoever on the impact of the code on NUMA-Q, only some recall of its operating characteristics. -- wli - 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/