Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755569Ab2JVQIN (ORCPT ); Mon, 22 Oct 2012 12:08:13 -0400 Received: from mail-la0-f46.google.com ([209.85.215.46]:51747 "EHLO mail-la0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751211Ab2JVQIM (ORCPT ); Mon, 22 Oct 2012 12:08:12 -0400 MIME-Version: 1.0 In-Reply-To: <1350921565.2768.105.camel@twins> References: <1350912052-10066-1-git-send-email-eranian@google.com> <1350912052-10066-2-git-send-email-eranian@google.com> <20121022135358.GJ2095@tassilo.jf.intel.com> <20121022153952.GM2095@tassilo.jf.intel.com> <1350921565.2768.105.camel@twins> Date: Mon, 22 Oct 2012 18:08:10 +0200 Message-ID: Subject: Re: [PATCH v2 1/2] perf tools: add event modifier to request exclusive PMU access From: Stephane Eranian To: Peter Zijlstra Cc: Andi Kleen , LKML , "mingo@elte.hu" , Arnaldo Carvalho de Melo , Jiri Olsa Content-Type: text/plain; charset=UTF-8 X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 834 Lines: 20 On Mon, Oct 22, 2012 at 5:59 PM, Peter Zijlstra wrote: > On Mon, 2012-10-22 at 17:44 +0200, Stephane Eranian wrote: >> >> I know the answer, because I know what's going on under the >> hood. But what about the average user? > > I'm still wondering if the avg user really thinks 'instructions' is a > useful metric for other than obtaining ipc measurements. > Yeah, for many users CPI (or IPC) is a useful metric. > The avg user wants time domain measurements, like what's the most > expensive function, or most expensive cache-miss etc.. > Yes, you have those too. -- 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/