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Date: Mon, 11 Nov 2013 14:08:45 +0100
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>, Pekka Enberg <penberg@kernel.org>,
        Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
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        Stephane Eranian <eranian@google.com>, Jiri Olsa <jolsa@redhat.com>,
        Rodrigo Campos <rodrigo@sdfg.com.ar>, Arun Sharma <asharma@fb.com>
Subject: Re: [RFC/PATCHSET 00/14] perf report: Add support to accumulate hist
 periods (v2)
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On Mon, Nov 11, 2013 at 01:13:52PM +0100, Ingo Molnar wrote:
> 
> It's not an irrelevant feature at all! :-)
> 
> It's just that for any sort of longer profile it was pretty 
> difficult/frustrating to use, which I think held back adoption.
> 
> That performance problem got fixed now by you and Namhyung, so I think 
> we'll see even wider adoption of call-graph profiling...

Ah I see now. At the time Linus reported his issue, I had the feeling his
usecase was a bit "extreme", but I actually have no idea how far perf can be
used given that I'm mostly used to short benchmarks, typically hackbench,
perf bench sched messaging et al. Thing is I don't use it enough for my
real usecases :)