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Re: [PATCH V7 6/8] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY% in report -D

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On Fri, Aug 28, 2015 at 05:48:07AM -0400, Kan Liang wrote:
> From: Kan Liang <kan.liang@intel.com>
> 
> The group read results from cycles/ref-cycles/TSC/ASTATE/MSTATE event
> can be used to calculate the frequency, CPU Utilization and percent
> performance during each sampling period.
> This patch shows them in report -D.
> 
> Here is an example:
> 
> $ perf record -e
> '{cycles,ref-cycles,msr/tsc/,msr/mperf/,msr/aperf/}:S' ~/tchain_edit

so this perf cord set of events is set when you want to get
the freq data/ratios.. I think we should not force user to
specify this on command line and provide short option for
that like

  $ perf record --freq ~/tchain_edit

we already do this in perf stat for transactions.. you
can also check the existence of particular events and warn
user appropriatelly if any is missing

jirka
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[PATCH V7 0/8] Freq/CPU%/CORE_BUSY% support Kan Liang <kan.liang@intel.com> - 2015-08-28 19:10 +0200
  [PATCH V7 4/8] perf,tools: add backpointer for perf_env to evlist Kan Liang <kan.liang@intel.com> - 2015-08-28 19:10 +0200
    Re: [PATCH V7 4/8] perf,tools: add backpointer for perf_env to evlist Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-08-28 19:50 +0200
    [tip:perf/core] perf evlist:   Add backpointer for perf_env to evlist tip-bot for Kan Liang <tipbot@zytor.com> - 2015-08-31 10:40 +0200
  [PATCH V7 6/8] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY% in report -D Kan Liang <kan.liang@intel.com> - 2015-08-28 19:10 +0200
    Re: [PATCH V7 6/8] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY%  in report -D Jiri Olsa <jolsa@redhat.com> - 2015-08-31 13:20 +0200
      RE: [PATCH V7 6/8] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY%  in report -D "Liang, Kan" <kan.liang@intel.com> - 2015-08-31 21:20 +0200
    Re: [PATCH V7 6/8] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY%  in report -D Jiri Olsa <jolsa@redhat.com> - 2015-08-31 13:20 +0200
      Re: [PATCH V7 6/8] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY%  in report -D Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-08-31 22:40 +0200
  [PATCH V7 3/8] perf,tools: rename perf_session_env to perf_env Kan Liang <kan.liang@intel.com> - 2015-08-28 19:10 +0200
    Re: [PATCH V7 3/8] perf,tools: rename perf_session_env to perf_env Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-08-28 19:50 +0200
    [tip:perf/core] perf tools: Rename perf_session_env to perf_env tip-bot for Kan Liang <tipbot@zytor.com> - 2015-08-31 10:40 +0200
  [PATCH V7 5/8] perf evsel: Add a backpointer to the evlist a evsel is in Kan Liang <kan.liang@intel.com> - 2015-08-28 19:10 +0200
    Re: [PATCH V7 5/8] perf evsel: Add a backpointer to the evlist a  evsel is in Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-08-28 19:50 +0200
  [PATCH V7 8/8] perf,tools: Show freq/CPU%/CORE_BUSY% in perf report --stdio Kan Liang <kan.liang@intel.com> - 2015-08-28 19:10 +0200
  [PATCH V7 1/8] perf,tools: introduce generic FEAT for CPU attributes Kan Liang <kan.liang@intel.com> - 2015-08-28 19:10 +0200
    Re: [PATCH V7 1/8] perf,tools: introduce generic FEAT for CPU  attributes Jiri Olsa <jolsa@redhat.com> - 2015-08-31 11:50 +0200

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