From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: "Jacky(GuangXiang Lee)" <gxli@arca.com.cn>
Cc: climeter@sgi.com, linux-mm@kvack.org
Subject: Re: about page migration on UMA
Date: Wed, 17 Oct 2007 15:44:03 +0900 [thread overview]
Message-ID: <20071017154403.7712262c.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <02f001c8108c$a3818760$3708a8c0@arcapub.arca.com>
On Wed, 17 Oct 2007 15:09:19 +0800
"Jacky(GuangXiang Lee)" <gxli@arca.com.cn> 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 ?
>
Currently no usage. but someone (Mel ?) will use migration code to do
page defragmentation. In that case, migration will be used.
For memory hot remove, we will need to enable migration on UMA.
(but I don't hear requests to do that...)
But, sys_move_pages() will not work on UMA.
Thanks,
-Kame
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next prev parent reply other threads:[~2007-10-17 6:44 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 [this message]
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)
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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