From: Andrew Morton <akpm@osdl.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: kravetz@us.ibm.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, magnus.damm@gmail.com,
marcelo.tosatti@cyclades.com
Subject: Re: [PATCH 0/4] Swap migration V3: Overview
Date: Thu, 20 Oct 2005 16:06:38 -0700 [thread overview]
Message-ID: <20051020160638.58b4d08d.akpm@osdl.org> (raw)
In-Reply-To: <20051020225935.19761.57434.sendpatchset@schroedinger.engr.sgi.com>
Christoph Lameter <clameter@sgi.com> wrote:
>
> Page migration is also useful for other purposes:
>
> 1. Memory hotplug. Migrating processes off a memory node that is going
> to be disconnected.
>
> 2. Remapping of bad pages. These could be detected through soft ECC errors
> and other mechanisms.
It's only useful for these things if it works with close-to-100% reliability.
And there are are all sorts of things which will prevent that - mlock,
ongoing direct-io, hugepages, whatever.
So before we can commit ourselves to the initial parts of this path we'd
need some reassurance that the overall scheme addresses these things and
that the end result has a high probability of supporting hot unplug and
remapping sufficiently well.
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next prev parent reply other threads:[~2005-10-20 23:06 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-20 22:59 Christoph Lameter
2005-10-20 22:59 ` [PATCH 1/4] Swap migration V3: LRU operations Christoph Lameter
2005-10-21 6:06 ` Dave Hansen
2005-10-21 6:27 ` Magnus Damm
2005-10-21 6:56 ` Dave Hansen
2005-10-21 7:25 ` Magnus Damm
2005-10-21 15:42 ` Christoph Lameter
2005-10-21 11:49 ` Nikita Danilov
2005-10-20 22:59 ` [PATCH 2/4] Swap migration V3: Page Eviction Christoph Lameter
2005-10-22 1:06 ` Marcelo Tosatti
2005-10-20 22:59 ` [PATCH 3/4] Swap migration V3: MPOL_MF_MOVE interface Christoph Lameter
2005-10-20 22:59 ` [PATCH 4/4] Swap migration V3: sys_migrate_pages interface Christoph Lameter
2005-10-21 2:55 ` KAMEZAWA Hiroyuki
2005-10-21 7:07 ` Simon Derr
2005-10-21 7:20 ` KAMEZAWA Hiroyuki
2005-10-21 7:39 ` Simon Derr
2005-10-21 7:46 ` KAMEZAWA Hiroyuki
2005-10-21 15:22 ` Paul Jackson
2005-10-21 15:15 ` Paul Jackson
2005-10-21 15:21 ` Kamezawa Hiroyuki
2005-10-21 18:10 ` Paul Jackson
2005-10-21 18:26 ` Christoph Lameter
2005-10-21 18:57 ` Paul Jackson
2005-10-21 15:47 ` Christoph Lameter
2005-10-21 16:18 ` Ray Bryant
2005-10-21 16:33 ` Christoph Lameter
2005-10-21 15:18 ` Paul Jackson
2005-10-21 16:27 ` Christoph Lameter
2005-10-21 16:59 ` Kamezawa Hiroyuki
2005-10-21 17:03 ` Paul Jackson
2005-10-21 17:06 ` Christoph Lameter
2005-10-21 18:17 ` Paul Jackson
2005-10-20 23:06 ` Andrew Morton [this message]
2005-10-20 23:46 ` [PATCH 0/4] Swap migration V3: Overview mike kravetz
2005-10-21 3:22 ` KAMEZAWA Hiroyuki
2005-10-21 3:32 ` mike kravetz
2005-10-21 3:56 ` KAMEZAWA Hiroyuki
2005-10-21 4:22 ` mike kravetz
2005-10-21 5:13 ` KAMEZAWA Hiroyuki
2005-10-21 15:28 ` Paul Jackson
2005-10-21 16:00 ` mike kravetz
2005-10-21 5:59 ` KAMEZAWA Hiroyuki
2005-10-22 1:16 ` Marcelo Tosatti
2005-10-21 15:54 ` Christoph Lameter
2005-10-21 1:57 ` Magnus Damm
2005-10-22 0:50 ` Marcelo Tosatti
2005-10-23 12:50 ` Magnus Damm
2005-10-24 7:44 ` Marcelo Tosatti
2005-10-25 11:37 ` Magnus Damm
2005-10-25 14:37 ` Marcelo Tosatti
2005-10-26 7:04 ` Magnus Damm
2005-10-27 15:01 ` Marcelo Tosatti
2005-10-27 20:43 ` Andrew Morton
2005-10-27 21:35 ` Marcelo Tosatti
2005-10-28 3:07 ` Andrew Morton
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