linux-kernel - Re: [BUG] perf report --pid not reporting correctly

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Date:   Thu, 22 Sep 2016 07:57:23 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...hat.com>,
        Stephane Eranian <eranian@...gle.com>,
        Jiri Olsa <jolsa@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        "mingo@...e.hu" <mingo@...e.hu>,
        Vince Weaver <vincent.weaver@...ne.edu>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: [BUG] perf report --pid not reporting correctly

> If not, I suggest to use --hierarchy mode with including the sort key
> as the first one.  In this case.  It'll still show absolute
> percentages of global total period, but you can see the desired result
> easily IMHO.  Please try something like this:
> 
>   $ perf report --hierarchy -s pid,cpu

It would be nice if there was a way from scripts with a command line option
to ask hierarchy mode to only show a subset of the tree (e.g. with some
kind of pattern)

Then options like --pid could be obsoleted, but it would be far more
flexible and scale for all the sort keys which are supported, without
adding a lot of new command line options.

-Andi