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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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[PATCHSET 00/16] perf top: Add multi-thread support (v1) Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
  [PATCH/RFC 03/16] perf top: Factor out warnings about kernel addresses and symbols Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
    Re: [PATCH/RFC 03/16] perf top: Factor out warnings about kernel  addresses and symbols Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-10 20:10 +0100
  [PATCH/RFC 14/16] perf top: Separate struct perf_top_stats Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
  [PATCH/RFC 11/16] perf top: Implement basic parallel processing Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
  [PATCH/RFC 01/16] perf top: Delete half-processed hist entries when exit Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
    RE: [PATCH/RFC 01/16] perf top: Delete half-processed hist entries  when exit 平松雅巳 / HIRAMATU，MASAMI   <masami.hiramatsu.pt@hitachi.com> - 2015-12-10 11:00 +0100
      Re: [PATCH/RFC 01/16] perf top: Delete half-processed hist entries  when exit Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-10 20:00 +0100
  [PATCH/RFC 10/16] perf hist: Add events_stats__add() and hists__add_stats() Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
  [PATCH/RFC 16/16] perf tools: Skip dso front cache for multi-threaded lookup Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
  [PATCH/RFC 04/16] perf top: Factor out warnings in perf_top__record_precise_ip() Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
  [PATCH/RFC 15/16] perf top: Add --num-thread option Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
  [PATCH/RFC 09/16] perf tools: Update hist entry's hists pointer Namhyung Kim <namhyung@kernel.org> - 2015-12-10 09:00 +0100
  Re: [PATCHSET 00/16] perf top: Add multi-thread support (v1) Ingo Molnar <mingo@kernel.org> - 2015-12-10 09:10 +0100
    Re: [PATCHSET 00/16] perf top: Add multi-thread support (v1) Namhyung Kim <namhyung@gmail.com> - 2015-12-10 09:50 +0100
      Re: [PATCHSET 00/16] perf top: Add multi-thread support (v1) Ingo Molnar <mingo@kernel.org> - 2015-12-11 09:20 +0100
        Re: [PATCHSET 00/16] perf top: Add multi-thread support (v1) David Ahern <dsahern@gmail.com> - 2015-12-11 16:10 +0100

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