linux-kernel - Re: [RFC/PATCHSET 00/17] perf tools: Add support for hierachy view (v2)

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Date:	Wed, 20 Jan 2016 09:19:31 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
CC:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Jiri Olsa <jolsa@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <andi@...stfloor.org>,
	Wang Nan <wangnan0@...wei.com>,
	Don Zickus <dzickus@...hat.com>,
	Pekka Enberg <penberg@...nel.org>,
	Moinuddin Quadri <moin18@...il.com>
Subject: Re: [RFC/PATCHSET 00/17] perf tools: Add support for hierachy view
 (v2)

Hi Arnaldo,

On Tue, Jan 19, 2016 at 05:52:26PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, Jan 17, 2016 at 01:03:00AM +0900, Namhyung Kim escreveu:
> > Hello,
> > 
> > This is v2 attempt of my earlier patchset [1].  This patchset
> > implements a new feature that collects hist entries in a hierachical
> > manner.  That means lower-level entries belong to an upper-level
> > entry.  The entry hierachy is built on the sort keys given, so users
> > can set it whatever they want.  It only shows top-level entries first,
> > and user can expand/collapse it dynamically.
> > 
> > This time I implemented it for every output browser including TUI.
> > A screenshot on TUI looks like below:
> > 
> > For normal output:
> > 
> >   $ perf report --tui
> >   Samples: 3K of event 'cycles:pp', Event count (approx.): 1695979674
> >     Overhead  Command        Shared Object         Symbol
> >   ------------------------------------------------------------------------
> >   -    7.57%  swapper        [kernel.vmlinux]      [k] intel_idle
> >        intel_idle
> >        cpuidle_enter_state
> >        cpuidle_enter
> >        call_cpuidle
> >      + cpu_startup_entry
> >   +    1.16   firefox        firefox               [.] 0x00000000000019433
> >   +    0.97%  firefox        libpthread-2.22.so    [.] pthread_mutex_lock
> >   ...
> > 
> > 
> > With hierarchy view,
> > 
> >   $ perf report --tui --hierarchy
> >   Samples: 3K of event 'cycles:pp', Event count (approx.): 1695979674
> >    Overhead        Command / Shared Object / Symbol
> >   -------------------------------------------------------------------
> >   +  76.30%        firefox
> >   -   9.95%        swapper
> >      -   9.51%        [kernel.vmlinux]
> >         -   7.57         [k] intel_idle
> > 	     intel_idle
> > 	     cpuidle_enter_state
> > 	     cpuidle_enter
> > 	     call_cpuidle
> > 	   + cpu_startup_entry
> > 	+   0.15%        [k] __schedule
> > 	+   0.12%        [k] menu_select
> > 	...
> >      +   0.34%        [sdhci]
> >      +   0.06%        [e1000e]
> >      ...
> >  +    5.65%        Xorg
> >  +    5.42%        Socket Thread
> >  ...
> > 
> > As you can see, overhead of an upper level entry is the sum of
> > overhead of lower level entries.  The entries are aligned by its order
> > of matching sort keys.
> > 
> > This is available from 'perf/hierarchy-v2' branch in my tree:
> > 
> >   git://git.kernel.org/pub/scm/linux/kernel/git/namhyung-perf.git
> 
> Didn't work:
> 
> [acme@...et linux]$ git remote add namhyung git://git.kernel.org/pub/scm/linux/kernel/git/namhyung-perf.git
> [acme@...et linux]$ git remote update namhyung
> Fetching namhyung
> fatal: remote error: access denied or repository not exported: /pub/scm/linux/kernel/git/namhyung-perf.git
> error: Could not fetch namhyung
> [acme@...et linux]$
> 
> I looked it up and this one works:
> 
>     git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git
> 
> Doing a test merge to test this.

Oops, sorry about that.  I should not type it manually..

Thanks,
Namhyung