linux-kernel - Re: [PATCH 3/5] perf report: Add --percentage option

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Date:	Wed, 15 Jan 2014 11:18:23 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Andi Kleen <andi@...stfloor.org>,
	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>
Subject: Re: [PATCH 3/5] perf report: Add --percentage option

On Tue, 14 Jan 2014 18:25:55 -0300, Arnaldo Carvalho de Melo wrote:
> Em Tue, Jan 14, 2014 at 01:07:00PM -0800, Andi Kleen escreveu:
>> Namhyung Kim <namhyung@...nel.org> writes:
>> >  
>> > +--percentage::
>> > +	Determine how to display the overhead percentage of filtered
>> > entries.
>> 
>> This should describe also what a "filtered entry" exactly is. It's not clear
>> even to me.
>
> Yeah, the text should give some context, mentioning the "Zoom"
> operations that can be done in the TUI (DSO, thread, etc) that allows
> applying what he is calling "filters".`

Ah, okay.

How about this:


-c::
--comms=::
	Only consider symbols in these comms. CSV that understands
	file://filename entries.  This option will affect the percentage of
	overhead column.  See --percentage for more info.
-d::
--dsos=::
	Only consider symbols in these dsos. CSV that understands
	file://filename entries.  This option will affect the percentage of
	overhead column.  See --percentage for more info.
-S::
--symbols=::
	Only consider these symbols. CSV that understands
	file://filename entries.  This option will affect the percentage of
	overhead column.  See --percentage for more info.

--percentage::
	Determine how to display the overhead percentage of filtered entries.
	Filters can be applied by --comms, --dsos and/or --symbols options and
	Zoom operations on the TUI (thread, dso, etc).

	"relative" means it's relative to filtered entries only so that the
	sum of shown entries will be always 100%.  "absolute" means it retains
	original value before and after the filter applied.


Thanks,
Namhyung
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