linux-kernel - Re: [PATCH V8 0/7] Freq/CPU%/CORE

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Message-ID: <20150907113630.GC5806@krava.brq.redhat.com>
Date:	Mon, 7 Sep 2015 13:36:30 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	kan.liang@...el.com
Cc:	acme@...nel.org, jolsa@...nel.org, a.p.zijlstra@...llo.nl,
	luto@...nel.org, mingo@...hat.com, eranian@...gle.com,
	ak@...ux.intel.com, mark.rutland@....com, adrian.hunter@...el.com,
	namhyung@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V8 0/7] Freq/CPU%/CORE_BUSY% support

On Thu, Sep 03, 2015 at 08:30:56AM -0400, kan.liang@...el.com wrote:
> From: Kan Liang <kan.liang@...el.com>
> 
> This patch set supports per-sample freq/CPU%/CORE_BUSY% print in perf
> report -D and --stdio.
> For printing these information, the perf.data file must have been obtained
> by group read and using special events cycles, ref-cycles, msr/tsc/,
> msr/aperf/ or msr/mperf/.
> 
>  - Freq (MHz): The frequency during the sample interval. Needs cycles
>    ref-cycles event.
>  - CPU%: CPU utilization during the sample interval. Needs ref-cycles and
>    msr/tsc/ events.
>  - CORE_BUSY%: actual percent performance (APERF/MPERF%) during the
>    sample interval. Needs msr/aperf/ and msr/mperf/ events.
> 
> Here is an example:

other than my latest 2 comments, I'm ok with the patchset

jirka
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