From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755232AbbEUMEK (ORCPT ); Thu, 21 May 2015 08:04:10 -0400 Received: from mail-oi0-f52.google.com ([209.85.218.52]:36564 "EHLO mail-oi0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753041AbbEUMEH (ORCPT ); Thu, 21 May 2015 08:04:07 -0400 MIME-Version: 1.0 In-Reply-To: <87bnhej159.fsf@tassilo.jf.intel.com> References: <20150520070057.GK3644@twins.programming.kicks-ass.net> <20150520092842.GF18673@twins.programming.kicks-ass.net> <20150520135209.GI18673@twins.programming.kicks-ass.net> <20150520152534.GJ18673@twins.programming.kicks-ass.net> <20150520160802.GL18673@twins.programming.kicks-ass.net> <20150520162811.GN18673@twins.programming.kicks-ass.net> <87bnhej159.fsf@tassilo.jf.intel.com> Date: Thu, 21 May 2015 05:04:07 -0700 Message-ID: Subject: Re: perf: odd event scheduling issue From: Stephane Eranian To: Andi Kleen Cc: Peter Zijlstra , Vince Weaver , LKML , Arnaldo Carvalho de Melo , Jiri Olsa , Ingo Molnar , Paul Mackerras Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 20, 2015 at 4:10 PM, Andi Kleen wrote: > Peter Zijlstra writes: >> >> Secondly, we should only enforce this limit if and when there are >> exclusive events on the system I suppose. > > That's the key part really and absolutely needed. > Are you talking about the N/2 counters? If so, they, yes I agree. > -Andi > > -- > ak@linux.intel.com -- Speaking for myself only