From: "Jared Hulbert" <jaredeh@gmail.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: "Jacky(GuangXiang Lee)" <gxli@arca.com.cn>,
climeter@sgi.com, linux-mm@kvack.org
Subject: Re: about page migration on UMA
Date: Fri, 9 Nov 2007 11:31:05 -0800 [thread overview]
Message-ID: <6934efce0711091131n1acd2ce1h7bb17f9f3cb0f235@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0710181825520.4272@schroedinger.engr.sgi.com>
On 10/18/07, Christoph Lameter <clameter@sgi.com> wrote:
> On Wed, 17 Oct 2007, Jacky(GuangXiang Lee) wrote:
>
> > seems page migration is used mostly for NUMA platform to improve
> > performance.
> > But in a UMA architecture, Is it possible to use page migration to move
> > pages ?
>
> Yes. Just one up with a usage for it. The page migration mechanism itself
> is not NUMA dependent.
For extreme low power systems it would be possible to shut down banks
in SDRAM chips that were not full thereby saving power. That would
require some defraging and migration to empty them prior to powering
down those banks.
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next prev parent reply other threads:[~2007-11-09 19:31 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-16 10:19 [PATCH] memory cgroup enhancements [0/5] intro KAMEZAWA Hiroyuki
2007-10-16 10:23 ` [PATCH] memory cgroup enhancements [1/5] force_empty for memory cgroup KAMEZAWA Hiroyuki
2007-10-17 4:17 ` David Rientjes
2007-10-17 5:05 ` Balbir Singh
2007-10-17 5:26 ` KAMEZAWA Hiroyuki
2007-10-17 5:16 ` KAMEZAWA Hiroyuki
2007-10-17 5:38 ` David Rientjes
2007-10-17 5:50 ` KAMEZAWA Hiroyuki
2007-10-17 7:09 ` about page migration on UMA Jacky(GuangXiang Lee)
2007-10-17 6:44 ` KAMEZAWA Hiroyuki
2007-10-19 1:26 ` Christoph Lameter
2007-11-09 19:31 ` Jared Hulbert [this message]
2007-11-09 19:36 ` Christoph Lameter
2007-11-09 19:54 ` Jared Hulbert
2007-11-09 19:58 ` Christoph Lameter
2007-11-09 21:30 ` Dave Hansen
2007-11-12 0:50 ` KAMEZAWA Hiroyuki
2007-11-14 4:31 ` Jacky(GuangXiang Lee)
2007-11-14 17:05 ` Jared Hulbert
2007-10-16 10:25 ` [PATCH] memory cgroup enhancements [2/5] remember charge as cache KAMEZAWA Hiroyuki
2007-10-16 10:26 ` [PATCH] memory cgroup enhancements [3/5] record pc is on active list KAMEZAWA Hiroyuki
2007-10-17 4:17 ` David Rientjes
2007-10-17 5:16 ` KAMEZAWA Hiroyuki
2007-10-16 10:27 ` [PATCH] memory cgroup enhancements [4/5] memory cgroup statistics KAMEZAWA Hiroyuki
2007-10-16 10:28 ` [PATCH] memory cgroup enhancements [5/5] show statistics by memory.stat file per cgroup KAMEZAWA Hiroyuki
2007-10-16 18:20 ` [PATCH] memory cgroup enhancements [0/5] intro Balbir Singh
2007-10-16 18:28 ` Andrew Morton
2007-10-16 18:40 ` Balbir Singh
2007-10-17 5:19 ` KAMEZAWA Hiroyuki
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