linux-kernel - Re: [RFC 0/3] perf tools: Show time info (v1)

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Date:	Mon, 2 Dec 2013 18:04:48 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jiri Olsa <jolsa@...hat.com>, David Ahern <dsahern@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <andi@...stfloor.org>,
	Pekka Enberg <penberg@...nel.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [RFC 0/3] perf tools: Show time info (v1)

On Mon, Dec 02, 2013 at 03:53:16PM +0900, Namhyung Kim wrote:
> Hi,
> 
> Sometimes users might want to see time information along with the
> performance result but the perf cannot provide it currently.
> 
> In this patchset, I added such feature using sample->time.  When the
> perf processes sample events, it calculate time info and update last
> timestamp.  It keeps the last timestamp for each evsel (and for each
> cpu if it's a per-cpu session).

Does the sorting on arbitary fields work now?

I believe to make use of this you totally want to sort on it too,
but traditionally perf report could only sort on a single field.

Without sorting adding more and more fields is just confusing. 

-Andi
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