Date: Fri, 11 Dec 2015 09:11:41 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Namhyung Kim <namhyung@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>, Jiri Olsa <jolsa@redhat.com>,
        LKML <linux-kernel@vger.kernel.org>, David Ahern <dsahern@gmail.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Andi Kleen <andi@firstfloor.org>,
        Stephane Eranian <eranian@google.com>,
        Adrian Hunter <adrian.hunter@intel.com>
Subject: Re: [PATCHSET 00/16] perf top: Add multi-thread support (v1)
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* Namhyung Kim <namhyung@gmail.com> wrote:

> IIRC David said that thread per cpu seems too much especially on a large system 
> (like ~1024 cpu). [...]

Too much in what fashion? For recording I think it's the fastest, most natural 
model - anything else will create cache line bounces.

For perf report, I suspect you are right, it would depend on the actual possible 
parallelism - which with time would improve I suspect.

Thanks,

	Ingo
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