From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755552Ab2BFU2B (ORCPT ); Mon, 6 Feb 2012 15:28:01 -0500 Received: from s15943758.onlinehome-server.info ([217.160.130.188]:58687 "EHLO mail.x86-64.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754629Ab2BFU2A (ORCPT ); Mon, 6 Feb 2012 15:28:00 -0500 Date: Mon, 6 Feb 2012 21:27:22 +0100 From: Borislav Petkov To: Peter Zijlstra Cc: Stephane Eranian , linux-kernel@vger.kernel.org, acme@redhat.com, mingo@elte.hu, robert.richter@amd.com, eric.dumazet@gmail.com, Andreas Herrmann Subject: Re: [BUG] perf: perf sched warning possibly due to clock granularity on AMD Message-ID: <20120206202722.GA556@aftab> References: <20120206132546.GA30854@quad> <1328538403.2482.4.camel@laptop> <20120206153408.GA31237@aftab> <1328546246.2482.10.camel@laptop> <20120206164626.GA31704@aftab> <1328547259.2482.11.camel@laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1328547259.2482.11.camel@laptop> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 06, 2012 at 05:54:19PM +0100, Peter Zijlstra wrote: > On Mon, 2012-02-06 at 17:46 +0100, Borislav Petkov wrote: > > > across all CPUs in the entire system. > > > > Right, by the "entire system" you mean consistent across cores and > > sockets but not necessarily across cabinets, as in the comment above, > > correct? > > > > If so, let me ask around if this holds true too. > > Every CPU available to the kernel. So if you run a single system image > across your cabinets, then yes those too. Ok, but what about that sentence "(but not across cabinets - we turn it off in that case explicitly.)" - I don't see any place where it is turned off explicitly... Maybe a stale comment? -- Regards/Gruss, Boris. Advanced Micro Devices GmbH Einsteinring 24, 85609 Dornach GM: Alberto Bozzo Reg: Dornach, Landkreis Muenchen HRB Nr. 43632 WEEE Registernr: 129 19551