From: Rik van Riel <riel@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: lwoodman@redhat.com, akpm@linux-foundation.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
minchan.kim@gmail.com
Subject: Re: [PATCH 6/8] Stop reclaim quickly when the task reclaimed enough lots pages
Date: Mon, 14 Dec 2009 09:45:11 -0500 [thread overview]
Message-ID: <4B264F77.6040603@redhat.com> (raw)
In-Reply-To: <20091214213103.BBC0.A69D9226@jp.fujitsu.com>
On 12/14/2009 07:31 AM, KOSAKI Motohiro wrote:
>
> From latency view, There isn't any reason shrink_zones() continue to
> reclaim another zone's page if the task reclaimed enough lots pages.
IIRC there is one reason - keeping equal pageout pressure
between zones.
However, it may be enough if just kswapd keeps evening out
the pressure, now that we limit the number of concurrent
direct reclaimers in the system.
Since kswapd does not use shrink_zones ...
> Signed-off-by: KOSAKI Motohiro<kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
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next prev parent reply other threads:[~2009-12-14 14:45 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-11 21:46 [PATCH v2] vmscan: limit concurrent reclaimers in shrink_zone Rik van Riel
2009-12-14 0:14 ` Minchan Kim
2009-12-14 4:09 ` Rik van Riel
2009-12-14 4:19 ` Minchan Kim
2009-12-14 4:29 ` Rik van Riel
2009-12-14 5:00 ` Minchan Kim
2009-12-14 12:22 ` KOSAKI Motohiro
2009-12-14 12:23 ` [cleanup][PATCH 1/8] vmscan: Make shrink_zone_begin/end helper function KOSAKI Motohiro
2009-12-14 14:34 ` Rik van Riel
2009-12-14 22:39 ` Minchan Kim
2009-12-14 12:24 ` [PATCH 2/8] Mark sleep_on as deprecated KOSAKI Motohiro
2009-12-14 13:03 ` Christoph Hellwig
2009-12-14 16:04 ` Arjan van de Ven
2009-12-14 14:34 ` Rik van Riel
2009-12-14 22:44 ` Minchan Kim
2009-12-14 12:29 ` [PATCH 3/8] Don't use sleep_on() KOSAKI Motohiro
2009-12-14 14:35 ` Rik van Riel
2009-12-14 22:46 ` Minchan Kim
2009-12-14 12:30 ` [PATCH 4/8] Use prepare_to_wait_exclusive() instead prepare_to_wait() KOSAKI Motohiro
2009-12-14 14:33 ` Rik van Riel
2009-12-15 0:45 ` KOSAKI Motohiro
2009-12-15 5:32 ` Mike Galbraith
2009-12-15 8:28 ` Mike Galbraith
2009-12-15 14:36 ` Mike Galbraith
2009-12-15 14:58 ` Rik van Riel
2009-12-15 18:17 ` Mike Galbraith
2009-12-15 18:43 ` Mike Galbraith
2009-12-15 19:33 ` Rik van Riel
2009-12-16 0:48 ` KOSAKI Motohiro
2009-12-16 2:44 ` Rik van Riel
2009-12-16 5:43 ` Mike Galbraith
2009-12-14 23:03 ` Minchan Kim
2009-12-14 12:30 ` [PATCH 5/8] Use io_schedule() instead schedule() KOSAKI Motohiro
2009-12-14 14:37 ` Rik van Riel
2009-12-14 23:46 ` Minchan Kim
2009-12-15 0:56 ` KOSAKI Motohiro
2009-12-15 1:13 ` Minchan Kim
2009-12-14 12:31 ` [PATCH 6/8] Stop reclaim quickly when the task reclaimed enough lots pages KOSAKI Motohiro
2009-12-14 14:45 ` Rik van Riel [this message]
2009-12-14 23:51 ` KOSAKI Motohiro
2009-12-15 0:11 ` Minchan Kim
2009-12-15 0:35 ` KOSAKI Motohiro
2009-12-14 12:32 ` [PATCH 7/8] Use TASK_KILLABLE instead TASK_UNINTERRUPTIBLE KOSAKI Motohiro
2009-12-14 14:47 ` Rik van Riel
2009-12-14 23:52 ` Minchan Kim
2009-12-14 12:32 ` [PATCH 8/8] mm: Give up allocation if the task have fatal signal KOSAKI Motohiro
2009-12-14 14:48 ` Rik van Riel
2009-12-14 23:54 ` Minchan Kim
2009-12-15 0:50 ` KOSAKI Motohiro
2009-12-15 1:03 ` Minchan Kim
2009-12-15 1:16 ` KOSAKI Motohiro
2009-12-14 12:40 ` [PATCH v2] vmscan: limit concurrent reclaimers in shrink_zone KOSAKI Motohiro
2009-12-14 17:08 ` Larry Woodman
2009-12-15 0:49 ` KOSAKI Motohiro
[not found] ` <20091217193818.9FA9.A69D9226@jp.fujitsu.com>
2009-12-17 12:23 ` FWD: " Larry Woodman
2009-12-17 14:43 ` Rik van Riel
2009-12-17 19:55 ` Rik van Riel
2009-12-17 21:05 ` Hugh Dickins
2009-12-17 22:52 ` Rik van Riel
2009-12-18 16:23 ` Andrea Arcangeli
2009-12-18 17:43 ` Rik van Riel
2009-12-18 10:27 ` KOSAKI Motohiro
2009-12-18 14:09 ` Rik van Riel
2009-12-18 13:38 ` Avi Kivity
2009-12-18 14:12 ` Rik van Riel
2009-12-18 14:13 ` Avi Kivity
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