linux-kernel - Re: [PATCH 2/9] perf, tools, stat: Support up-scaling of events

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Date:	Tue, 11 Aug 2015 19:13:41 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Andi Kleen <ak@...ux.intel.com>, acme@...nel.org, jolsa@...nel.org,
	linux-kernel@...r.kernel.org, eranian@...gle.com,
	namhyung@...nel.org, peterz@...radead.org, mingo@...nel.org
Subject: Re: [PATCH 2/9] perf, tools, stat: Support up-scaling of events

On Tue, Aug 11, 2015 at 07:00:37PM +0200, Andi Kleen wrote:
> > how about existing scale attributes, like in rapl code
> 
> I'm using the existing scale attribute, but I need a multiplication,
> not a division. That is why negative scale was redefined to mean
> multiplication.

your new perf tool code (perf/top-down-2 branch) over the rapl counter:

[root@...va perf]# ./perf stat -e 'power/energy-cores/' -I 1000 -a
#           time             counts   unit events
     1.000096151 21606019212309954560.00 Joules power/energy-cores/                                         
     2.000284710 3411476717733150720.00 Joules power/energy-cores/                                         
     3.000455216 12621337955705815040.00 Joules power/energy-cores/                                         
     4.000543075 6444651066767179776.00 Joules power/energy-cores/                                         
^C     4.144246923 1705738358866575360.00 Joules power/energy-cores/   


jirka
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