From: Rik van Riel <riel@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux-foundation.org>
Subject: Re: [PATCH 2/4] vmscan: drop PF_SWAPWRITE from zone_reclaim
Date: Wed, 13 May 2009 09:35:38 -0400 [thread overview]
Message-ID: <4A0ACCAA.4020505@redhat.com> (raw)
In-Reply-To: <20090513120627.587F.A69D9226@jp.fujitsu.com>
KOSAKI Motohiro wrote:
> Subject: [PATCH] vmscan: drop PF_SWAPWRITE from zone_reclaim
>
> PF_SWAPWRITE mean ignore write congestion. (see may_write_to_queue())
>
> foreground reclaim shouldn't ignore it because to write congested device cause
> large IO lantency.
> it isn't better than remote node allocation.
It might be on NUMAQ (which is no longer manufactured), but
your change looks right for every other vaguely modern NUMA
architecture that I know of.
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Cc: Christoph Lameter <cl@linux-foundation.org>
> Cc: Rik van Riel <riel@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
--
All rights reversed.
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux-foundation.org>
Subject: Re: [PATCH 2/4] vmscan: drop PF_SWAPWRITE from zone_reclaim
Date: Wed, 13 May 2009 09:35:38 -0400 [thread overview]
Message-ID: <4A0ACCAA.4020505@redhat.com> (raw)
In-Reply-To: <20090513120627.587F.A69D9226@jp.fujitsu.com>
KOSAKI Motohiro wrote:
> Subject: [PATCH] vmscan: drop PF_SWAPWRITE from zone_reclaim
>
> PF_SWAPWRITE mean ignore write congestion. (see may_write_to_queue())
>
> foreground reclaim shouldn't ignore it because to write congested device cause
> large IO lantency.
> it isn't better than remote node allocation.
It might be on NUMAQ (which is no longer manufactured), but
your change looks right for every other vaguely modern NUMA
architecture that I know of.
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Cc: Christoph Lameter <cl@linux-foundation.org>
> Cc: Rik van Riel <riel@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
--
All rights reversed.
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next prev parent reply other threads:[~2009-05-13 13:37 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-13 3:06 [PATCH 0/4] various zone_reclaim cleanup KOSAKI Motohiro
2009-05-13 3:06 ` KOSAKI Motohiro
2009-05-13 3:06 ` [PATCH 1/4] vmscan: change the number of the unmapped files in zone reclaim KOSAKI Motohiro
2009-05-13 3:06 ` KOSAKI Motohiro
2009-05-13 13:31 ` Rik van Riel
2009-05-13 13:31 ` Rik van Riel
2009-05-14 19:52 ` Christoph Lameter
2009-05-14 19:52 ` Christoph Lameter
2009-05-18 3:15 ` Wu Fengguang
2009-05-18 3:15 ` Wu Fengguang
2009-05-18 3:35 ` KOSAKI Motohiro
2009-05-18 3:35 ` KOSAKI Motohiro
2009-05-18 3:53 ` Wu Fengguang
2009-05-18 3:53 ` Wu Fengguang
2009-05-19 1:11 ` KOSAKI Motohiro
2009-05-19 1:11 ` KOSAKI Motohiro
2009-05-13 3:06 ` [PATCH 2/4] vmscan: drop PF_SWAPWRITE from zone_reclaim KOSAKI Motohiro
2009-05-13 3:06 ` KOSAKI Motohiro
2009-05-13 13:35 ` Rik van Riel [this message]
2009-05-13 13:35 ` Rik van Riel
2009-05-14 19:57 ` Christoph Lameter
2009-05-14 19:57 ` Christoph Lameter
2009-05-18 3:33 ` Wu Fengguang
2009-05-18 3:33 ` Wu Fengguang
2009-05-13 3:07 ` [PATCH 3/4] vmscan: zone_reclaim use may_swap KOSAKI Motohiro
2009-05-13 3:07 ` KOSAKI Motohiro
2009-05-13 11:26 ` Johannes Weiner
2009-05-13 11:26 ` Johannes Weiner
2009-05-13 14:43 ` Rik van Riel
2009-05-13 14:43 ` Rik van Riel
2009-05-14 19:59 ` Christoph Lameter
2009-05-14 19:59 ` Christoph Lameter
2009-05-18 3:35 ` Wu Fengguang
2009-05-18 3:35 ` Wu Fengguang
2009-05-13 3:08 ` [PATCH 4/4] zone_reclaim_mode is always 0 by default KOSAKI Motohiro
2009-05-13 3:08 ` KOSAKI Motohiro
2009-05-13 14:47 ` Rik van Riel
2009-05-13 14:47 ` Rik van Riel
2009-05-14 8:20 ` KOSAKI Motohiro
2009-05-14 8:20 ` KOSAKI Motohiro
2009-05-14 11:48 ` Robin Holt
2009-05-14 11:48 ` Robin Holt
2009-05-14 12:02 ` KOSAKI Motohiro
2009-05-14 12:02 ` KOSAKI Motohiro
2009-05-13 15:22 ` Robin Holt
2009-05-13 15:22 ` Robin Holt
2009-05-14 20:05 ` Christoph Lameter
2009-05-14 20:05 ` Christoph Lameter
2009-05-14 20:23 ` Rik van Riel
2009-05-14 20:23 ` Rik van Riel
2009-05-14 20:31 ` Christoph Lameter
2009-05-14 20:31 ` Christoph Lameter
2009-05-15 1:02 ` KOSAKI Motohiro
2009-05-15 1:02 ` KOSAKI Motohiro
2009-05-15 10:51 ` Robin Holt
2009-05-15 10:51 ` Robin Holt
2009-05-19 2:53 ` KOSAKI Motohiro
2009-05-19 2:53 ` KOSAKI Motohiro
2009-05-20 14:00 ` Robin Holt
2009-05-20 14:00 ` Robin Holt
2009-05-21 2:44 ` KOSAKI Motohiro
2009-05-21 2:44 ` KOSAKI Motohiro
2009-05-21 13:31 ` Christoph Lameter
2009-05-21 13:31 ` Christoph Lameter
2009-05-21 13:57 ` Robin Holt
2009-05-21 13:57 ` Robin Holt
2009-05-24 13:44 ` KOSAKI Motohiro
2009-05-24 13:44 ` KOSAKI Motohiro
2009-05-15 18:01 ` Christoph Lameter
2009-05-15 18:01 ` Christoph Lameter
2009-05-18 3:49 ` Wu Fengguang
2009-05-18 3:49 ` Wu Fengguang
2009-05-19 1:16 ` Zhang, Yanmin
2009-05-19 1:16 ` Zhang, Yanmin
2009-05-19 2:53 ` KOSAKI Motohiro
2009-05-19 2:53 ` KOSAKI Motohiro
2009-05-19 2:57 ` KOSAKI Motohiro
2009-05-19 2:57 ` KOSAKI Motohiro
2009-05-19 3:38 ` Zhang, Yanmin
2009-05-19 3:38 ` Zhang, Yanmin
2009-05-19 4:30 ` KOSAKI Motohiro
2009-05-19 4:30 ` KOSAKI Motohiro
2009-05-19 5:06 ` Zhang, Yanmin
2009-05-19 5:06 ` Zhang, Yanmin
2009-05-19 7:09 ` KOSAKI Motohiro
2009-05-19 7:09 ` KOSAKI Motohiro
2009-05-19 7:15 ` Zhang, Yanmin
2009-05-19 7:15 ` Zhang, Yanmin
2009-05-18 9:09 ` Wu Fengguang
2009-05-18 9:09 ` Wu Fengguang
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