linux-kernel - Re: [RFC/PATCHSET 00/14] perf report: Add support to accumulate hist periods (v2)

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Date:	Mon, 11 Nov 2013 14:01:19 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Namhyung Kim <namhyung@...nel.org>,
	Pekka Enberg <penberg@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Rodrigo Campos <rodrigo@...g.com.ar>,
	Arun Sharma <asharma@...com>
Subject: Re: [RFC/PATCHSET 00/14] perf report: Add support to accumulate hist
 periods (v2)

On Mon, Nov 11, 2013 at 01:12:12PM +0100, Ingo Molnar wrote:
> > I'm not sure why you want to add a new -F that adds news way to display 
> > fields. Isn't -s enough for that?
> 
> Well, -s implies sorting.
> 
> With -F we could decouple sorting from display order, and allow output 
> like:
> 
>   # Symbol   Command    Shared Object   Overhead
> 
> Where we still sort by 'overhead', yet display things by having 'overhead' 
> last.
> 
> So basically have maximum flexibility of output and sorting - into which 
> the new 'total' field for accumulated stats would fit automatically.

Ok, I haven't followed the details on why we want this to display the cumulated
overhead.

But reordering the columns should be ok as long as we have the same fields present in -F and -s.
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