linux-kernel - Re: [PATCH 2/3] perf tools: Spare double comparison of callchain first entry

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Date:	Fri, 17 Jan 2014 16:56:18 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>, acme@...stprotocols.net
Subject: Re: [PATCH 2/3] perf tools: Spare double comparison of callchain first entry

Hi Arnaldo and Frederic,

On Thu, 16 Jan 2014 17:47:34 -0200, Arnaldo Carvalho de Melo wrote:
> Em Thu, Jan 16, 2014 at 06:34:58PM +0100, Frederic Weisbecker escreveu:
>> On Thu, Jan 16, 2014 at 10:17:53AM +0900, Namhyung Kim wrote: 
>> > I think if the sort key doesn't contain "symbol", unmatch case would be
>> > increased as more various callchains would go into a same entry.
>> 
>> You mean -g fractal,0.5,callee,address ?
>> 
>> Hmm, actually I haven't seen much difference there.
>
> I guess he will, but will wait for Namhyung's final ack here, ok?

I meant sorting of hist entry like "-s cpu".   So as your number said
it's not an issue IMHO.  Arnaldo, I'm good with this change please merge
it. :)

Thanks,
Namhyung
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