From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx138.postini.com [74.125.245.138]) by kanga.kvack.org (Postfix) with SMTP id 7D5666B0044 for ; Fri, 9 Nov 2012 11:14:46 -0500 (EST) Received: from /spool/local by e7.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 9 Nov 2012 11:13:44 -0500 Received: from d01relay07.pok.ibm.com (d01relay07.pok.ibm.com [9.56.227.147]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id 5FE4C6E8062 for ; Fri, 9 Nov 2012 11:13:25 -0500 (EST) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by d01relay07.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id qA9GDODA63701236 for ; Fri, 9 Nov 2012 11:13:24 -0500 Received: from d01av01.pok.ibm.com (loopback [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id qA9GDNH3021098 for ; Fri, 9 Nov 2012 11:13:24 -0500 Message-ID: <509D2B9B.4090305@linux.vnet.ibm.com> Date: Fri, 09 Nov 2012 08:13:15 -0800 From: Dave Hansen MIME-Version: 1.0 Subject: Re: [RFC PATCH 0/8][Sorted-buddy] mm: Linux VM Infrastructure to support Memory Power Management References: <20121106195026.6941.24662.stgit@srivatsabhat.in.ibm.com> <20121108180257.GC8218@suse.de> <20121109051247.GA499@dirshya.in.ibm.com> <20121109090052.GF8218@suse.de> <509D185D.8070307@linux.vnet.ibm.com> <509D200F.2000908@linux.vnet.ibm.com> In-Reply-To: <509D200F.2000908@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: "Srivatsa S. Bhat" Cc: Mel Gorman , Vaidyanathan Srinivasan , akpm@linux-foundation.org, mjg59@srcf.ucam.org, paulmck@linux.vnet.ibm.com, maxime.coquelin@stericsson.com, loic.pallardy@stericsson.com, arjan@linux.intel.com, kmpark@infradead.org, kamezawa.hiroyu@jp.fujitsu.com, lenb@kernel.org, rjw@sisk.pl, gargankita@gmail.com, amit.kachhap@linaro.org, thomas.abraham@linaro.org, santosh.shilimkar@ti.com, linux-pm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org On 11/09/2012 07:23 AM, Srivatsa S. Bhat wrote: > FWIW, kernbench is actually (and surprisingly) showing a slight performance > *improvement* with this patchset, over vanilla 3.7-rc3, as I mentioned in > my other email to Dave. > > https://lkml.org/lkml/2012/11/7/428 > > I don't think I can dismiss it as an experimental error, because I am seeing > those results consistently.. I'm trying to find out what's behind that. The only numbers in that link are in the date. :) Let's see the numbers, please. If you really have performance improvement to the memory allocator (or something else) here, then surely it can be pared out of your patches and merged quickly by itself. Those kinds of optimizations are hard to come by! -- 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