linux-kernel - Re: [PATCH 13/16] perf callchain: Switch default to 'graph,0.5,caller'

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Date:	Sat, 10 Oct 2015 11:07:33 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Brendan Gregg <brendan.d.gregg@...il.com>
Cc:	Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Borislav Petkov <bp@...e.de>,
	Chandler Carruth <chandlerc@...il.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [PATCH 13/16] perf callchain: Switch default to
 'graph,0.5,caller'


* Brendan Gregg <brendan.d.gregg@...il.com> wrote:

> On Sat, Oct 10, 2015 at 12:09 AM, Ingo Molnar <mingo@...nel.org> wrote:
> >
> > * Brendan Gregg <brendan.d.gregg@...il.com> wrote:
> >
> >> On Fri, Oct 9, 2015 at 2:56 PM, Arnaldo Carvalho de Melo
> >> <arnaldo.melo@...il.com> wrote:
> >> >
> >> > Em Fri, Oct 09, 2015 at 01:34:33PM -0700, Brendan Gregg escreveu:
> >> > > On Mon, Oct 5, 2015 at 2:03 PM, Arnaldo Carvalho de Melo
> >> > > <acme@...nel.org> wrote:
> >> > > >
> >> > > > From: Arnaldo Carvalho de Melo <acme@...hat.com>
> >> > > >
> >> > > > Which is the most common default found in other similar tools.
> >> > >
> >> > > Interactive tools, sure, like the perf report TUI.
> >> >
> >> > > But this also changes the ordering of the non-interactive tools which
> >> > > dump stacks: "perf report -n --stdio" and "perf script". The most
> >> > > common default for dumping stacks is caller. Eg:
> >> >
> >> > And you use that for scripting?
> >>
> >> Yes; how I typically CPU profile:
> >>
> >> git clone https://github.com/brendangregg/FlameGraph
> >> cd FlameGraph
> >> perf record -F 99 -a -g -- sleep 60
> >> perf script | ./stackcollapse-perf.pl | /flamegraph.pl > flame.svg
> >>
> >> Then open flame.svg in a browser and click around. Try it. :)
> >
> > So I tried it:
> >
> >  triton:~/s/FlameGraph> ls -l flame.svg
> >  -rw-rw-r-- 1 mingo mingo 1022870 Oct 10 09:06 flame.svg
> >
> > but when I tried to view it via ImageMagick, it first showed an empty screen:
> >
> >  triton:~/s/FlameGraph> display flame.svg
> >
> > then when exiting it said:
> >
> >  display: non-conforming drawing primitive definition `text-anchor' @ error/draw.c/DrawImage/3182.
> >
> > although I guess that latter is an unrealted ImageMagick problem, not caused by
> > the SVG.
> >
> 
> Sorry, I should have said to open it in a browser (Chrome/Firefox);
> the SVG contains some (entirely embedded) JavaScript to provide
> interactivity (click to zoom, Ctrl-F to search).

aw, very nice output!

Thanks,

	Ingo
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