linux-kernel - Re: [RFC/PATCHSET 00/15] perf report: Add support to accumulate hist periods

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Date:	Tue, 30 Oct 2012 10:01:10 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Namhyung Kim <namhyung@...nel.org>, Arun Sharma <asharma@...com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Paul Mackerras <paulus@...ba.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...hat.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [RFC/PATCHSET 00/15] perf report: Add support to accumulate hist
 periods


* Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> On Tue, 2012-10-30 at 15:59 +0900, Namhyung Kim wrote:

> > Yes, the callchain part needs to be improved.  Peter's idea 
> > indeed looks good to me too.
> 
> FWIW, I think this is exactly what sysprof does, except that 
> tool isn't usable for other reasons.. You might want to look 
> at it though.

I always found the fundamental sysprof system-wide call graph 
profiling output/view superior - and so do many Xorg developers 
who are using SysProf that I talked to - so I'd strongly 
encourage to use that ordering and grouping for the default perf 
call-graph profiling output/view.

Thanks,

	Ingo
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