linux-kernel - Re: [RFC 00/12] perf diff: Factor diff command

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Message-ID: <1346956869.18408.66.camel@twins>
Date:	Thu, 06 Sep 2012 20:41:09 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andi Kleen <andi@...stfloor.org>,
	David Ahern <dsahern@...il.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: Re: [RFC 00/12] perf diff: Factor diff command

On Thu, 2012-09-06 at 17:46 +0200, Jiri Olsa wrote:
> The 'perf diff' and 'std/hist' code is now changed to allow computations
> mentioned in the paper. Two of them are implemented within this patchset:
>   1) ratio differential profiling
>   2) weighted differential profiling

Seems like a useful thing indeed, the explanation of the weighted diff
method doesn't seem to contain a why. I know I could go read the paper
but... :-)
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