From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f52.google.com (mail-pb0-f52.google.com [209.85.160.52]) by kanga.kvack.org (Postfix) with ESMTP id 6EEEF6B00B5 for ; Tue, 12 Nov 2013 13:54:03 -0500 (EST) Received: by mail-pb0-f52.google.com with SMTP id rr4so7292807pbb.25 for ; Tue, 12 Nov 2013 10:54:03 -0800 (PST) Received: from psmtp.com ([74.125.245.150]) by mx.google.com with SMTP id hb3si20908168pac.7.2013.11.12.10.53.59 for ; Tue, 12 Nov 2013 10:54:02 -0800 (PST) Received: from /spool/local by e28smtp03.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 13 Nov 2013 00:23:56 +0530 Received: from d28relay04.in.ibm.com (d28relay04.in.ibm.com [9.184.220.61]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id 24C44125803F for ; Wed, 13 Nov 2013 00:24:43 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay04.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id rACIrp3u47317226 for ; Wed, 13 Nov 2013 00:23:51 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id rACIrrpx020328 for ; Wed, 13 Nov 2013 00:23:54 +0530 Message-ID: <52827839.80904@linux.vnet.ibm.com> Date: Wed, 13 Nov 2013 00:19:29 +0530 From: "Srivatsa S. Bhat" MIME-Version: 1.0 Subject: Re: [Results] [RFC PATCH v4 00/40] mm: Memory Power Management References: <20130925231250.26184.31438.stgit@srivatsabhat.in.ibm.com> <52437128.7030402@linux.vnet.ibm.com> <20130925164057.6bbaf23bdc5057c42b2ab010@linux-foundation.org> <52442F6F.5020703@linux.vnet.ibm.com> <5281E09B.3060303@linux.vnet.ibm.com> In-Reply-To: <5281E09B.3060303@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: mgorman@suse.de, dave@sr71.net, hannes@cmpxchg.org, tony.luck@intel.com, matthew.garrett@nebula.com, riel@redhat.com, arjan@linux.intel.com, srinivas.pandruvada@linux.intel.com, willy@linux.intel.com, kamezawa.hiroyu@jp.fujitsu.com, lenb@kernel.org, rjw@sisk.pl, gargankita@gmail.com, paulmck@linux.vnet.ibm.com, svaidy@linux.vnet.ibm.com, andi@firstfloor.org, isimatu.yasuaki@jp.fujitsu.com, santosh.shilimkar@ti.com, kosaki.motohiro@gmail.com, linux-pm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, maxime.coquelin@stericsson.com, loic.pallardy@stericsson.com, amit.kachhap@linaro.org, thomas.abraham@linaro.org, markgross@thegnar.org On 11/12/2013 01:32 PM, Srivatsa S. Bhat wrote: > On 09/26/2013 06:28 PM, Srivatsa S. Bhat wrote: >> On 09/26/2013 05:10 AM, Andrew Morton wrote: >>> On Thu, 26 Sep 2013 04:56:32 +0530 "Srivatsa S. Bhat" wrote: >>> >>>> Experimental Results: >>>> ==================== >>>> >>>> Test setup: >>>> ---------- >>>> >>>> x86 Sandybridge dual-socket quad core HT-enabled machine, with 128GB RAM. >>>> Memory Region size = 512MB. >>> >>> Yes, but how much power was saved ;) >>> >> >> I don't have those numbers yet, but I'll be able to get them going forward. >> > > Hi, > > I performed experiments on an IBM POWER 7 machine and got actual power-savings > numbers (upto 2.6% of total system power) from this patchset. I presented them > at the Kernel Summit but forgot to post them on LKML. So here they are: > And here is a recent LWN article that highlights the important design changes in this version and gives a good overview of this patchset as a whole: http://lwn.net/Articles/568891/ And here is the link to the patchset (v4): http://lwn.net/Articles/568369/ Regards, Srivatsa S. Bhat -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org