linux-kernel - Re: [PATCH v13 06/23] perf config: Document 'hist.percentage' variable in man page

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Date:	Thu, 21 Jan 2016 11:54:03 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Taeung Song <treeze.taeung@...il.com>
Cc:	linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH v13 06/23] perf config: Document 'hist.percentage'
 variable in man page

Em Fri, Jan 08, 2016 at 08:39:36PM +0900, Taeung Song escreveu:
> Explain 'hist.percentage' variable.
> 
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Jiri Olsa <jolsa@...nel.org>
> Signed-off-by: Taeung Song <treeze.taeung@...il.com>
> ---
>  tools/perf/Documentation/perf-config.txt | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
> index aaf1791..b9892e5 100644
> --- a/tools/perf/Documentation/perf-config.txt
> +++ b/tools/perf/Documentation/perf-config.txt
> @@ -282,6 +282,23 @@ help.*::
>  	help.format::
>  		A format of manual page can be 'man' that is default.
>  
> +hist.*::
> +	hist.percentage::
> +		This option control the way to calculate overhead of filtered entries -
> +		that means the value of this option is effective only if there's a
> +		filter (by comm, dso or symbol name). Suppose a following example:
> +
> +		       Overhead  Symbols
> +		       ........  .......
> +		        33.33%     foo
> +		        33.33%     bar
> +		        33.33%     baz
> +
> +	       This is an original overhead and we'll filter out the first 'foo'
> +	       entry. The value of 'relative' would increase the overhead of 'bar'
> +	       and 'baz' to 50.00% for each, while 'absolute' would show their
> +	       current overhead (33.33%).

Ditto, this one can be toggled interactively using 'F'

- Arnaldo