linux-kernel - Re: [PATCH v2 1/2] perf tools: add event modifier to request exclusive PMU access

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Message-ID: <1350921565.2768.105.camel@twins>
Date:	Mon, 22 Oct 2012 17:59:25 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	Andi Kleen <ak@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH v2 1/2] perf tools: add event modifier to request
 exclusive PMU access

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.

The avg user wants time domain measurements, like what's the most
expensive function, or most expensive cache-miss etc..


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