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Date: Wed, 6 Jan 2016 15:38:53 +0100
From: Jiri Olsa <jolsa@redhat.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>, Andi Kleen <andi@firstfloor.org>,
        Ulrich Drepper <drepper@gmail.com>, Will Deacon <will.deacon@arm.com>,
        Stephane Eranian <eranian@google.com>, Don Zickus <dzickus@redhat.com>,
        lkml <linux-kernel@vger.kernel.org>, David Ahern <dsahern@gmail.com>,
        Ingo Molnar <mingo@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        "Liang, Kan" <kan.liang@intel.com>
Subject: Re: [PATCHv9 0/3] perf stat: Add scripting support
Message-ID: <20160106143853.GA6431@krava.brq.redhat.com>
References: <1452077397-31958-1-git-send-email-jolsa@kernel.org>
 <20160106141802.GA10415@kernel.org>
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On Wed, Jan 06, 2016 at 11:18:02AM -0300, Arnaldo Carvalho de Melo wrote:
> Em Wed, Jan 06, 2016 at 11:49:54AM +0100, Jiri Olsa escreveu:
> > hi,
> > sending another version of stat scripting.
>  
> > v9 changes:
> >   - rebased on top of accepted patches
> >   - desribed CPI metric in changelog [Arnaldo]
> >   - fixed cpu conversion [Arnaldo]
> 
> Thanks, applied. Testing the cpi script with an endless:
> 
> perf stat record -I 1000 -a | perf script -s ~acme/git/linux/tools/perf/scripts/python/stat-cpi.py
>      187.151796: cpu -1, thread -1 -> cpi 0.797917 (2568467461/3218963700)
>      188.151979: cpu -1, thread -1 -> cpi 0.734628 (2714373371/3694892981)
>      189.152212: cpu -1, thread -1 -> cpi 0.753332 (2958819204/3927644236)
>      190.152975: cpu -1, thread -1 -> cpi 1.587754 (202360895/127451009)
>      191.153486: cpu -1, thread -1 -> cpi 1.558219 (290557309/186467579)
> 
> in one monitor while trying various workloads in another, to see how it reacts,
> and after a while those raw numbers at the end of each line become just noise,
> I think they should be shown only under 'stat-cpy -v' (I think we can pass args
> to the 'perf script' scripts, right?
> 
> Also the 'cpu', 'thread' and '-> cpi' could be turned into headers, like 'perf
> stat' does?
> 
> Anyway, you called it 'example script' and we can improve it on top of what I
> pushed to perf/core, i.e. this patchkit, unchanged, thanks!

yep, it's just noise and it's just an example to show
how the stat scripting works.. we can tune it up with
more ratios ;-)

jirka