From: "Jacky(GuangXiang Lee)" <gxli@arca.com.cn>
To: Jared Hulbert <jaredeh@gmail.com>
Cc: Christoph Lameter <clameter@sgi.com>,
climeter@sgi.com, linux-mm@kvack.org
Subject: Re: about page migration on UMA
Date: Wed, 14 Nov 2007 12:31:07 +0800 [thread overview]
Message-ID: <473A7A0B.5030300@arca.com.cn> (raw)
In-Reply-To: <6934efce0711091131n1acd2ce1h7bb17f9f3cb0f235@mail.gmail.com>
Jared Hulbert a??e??:
> 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.
>
>
what is the way to shut down banks in SDRAM chips?
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next prev parent reply other threads:[~2007-11-14 4:31 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
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) [this message]
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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