linux-kernel - Re: [PATCH] powercap/rapl: handle domain energy unit

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Message-ID: <5502182C.90304@gmail.com>
Date:	Thu, 12 Mar 2015 17:50:20 -0500
From:	kazutomo <kazutomo.yoshii@...il.com>
To:	Jacob Pan <jacob.jun.pan@...ux.intel.com>
CC:	Linux PM <linux-pm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Rafael Wysocki <rafael.j.wysocki@...el.com>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Len Brown <len.brown@...el.com>
Subject: Re: [PATCH] powercap/rapl: handle domain energy unit

On 03/12/2015 05:05 PM, Jacob Pan wrote:
> On Thu, 12 Mar 2015 16:59:43 -0500
> kazutomo <kazutomo.yoshii@...il.com> wrote:
>
>>> according to the document, future DRAM energy unit will always be
>>> hardcoded to 15.3uJ, no enumeration since there is no domain
>>> specific MSR for energy unit.  
>> Which document are you referring to?
> Intel DocID:330784-001 Sept 2014
> Intel Xeon Processor E5-1600 and E5-2600 V2 of 2.

I think V2 is Ivy Bridge.  Is this typo?
 
By googling, I found a datasheet titled:
"Intel Xeon Processor E5-1600 and E5-2600 v3 Product Families, Volume 2
of 2. Datasheet, September 2014, Reference Number: 330784-001 "

It clearly says "ENERGY_UNIT for DRAM domain is 15.3uJ."

- kaz

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