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From: Rik van Riel <riel@redhat.com>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: Greg Thelen <gthelen@google.com>, Jan Kara <jack@suse.cz>,
	"bsingharora@gmail.com" <bsingharora@gmail.com>,
	Hugh Dickins <hughd@google.com>, Michal Hocko <mhocko@suse.cz>,
	linux-mm@kvack.org, Mel Gorman <mgorman@suse.de>,
	Ying Han <yinghan@google.com>,
	"hannes@cmpxchg.org" <hannes@cmpxchg.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Minchan Kim <minchan.kim@gmail.com>
Subject: Re: reclaim the LRU lists full of dirty/writeback pages
Date: Sat, 11 Feb 2012 09:55:38 -0500	[thread overview]
Message-ID: <4F36816A.6030609@redhat.com> (raw)
In-Reply-To: <20120211124445.GA10826@localhost>

On 02/11/2012 07:44 AM, Wu Fengguang wrote:

> Note that it's data for XFS. ext4 seems to have some problem with the
> workload: the majority pages are found to be writeback pages, and the
> flusher ends up blocking on the unconditional wait_on_page_writeback()
> in write_cache_pages_da() from time to time...
>
> XXX: commit NFS unstable pages via write_inode()
> XXX: the added congestion_wait() may be undesirable in some situations

Even with these caveats, this seems to be the right way forward.

> CC: Jan Kara<jack@suse.cz>
> CC: Mel Gorman<mgorman@suse.de>
> CC: Rik van Riel<riel@redhat.com>
> CC: Greg Thelen<gthelen@google.com>
> CC: Minchan Kim<minchan.kim@gmail.com>
> Signed-off-by: Wu Fengguang<fengguang.wu@intel.com>

Acked-by: Rik van Riel <riel@redhat.com>

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  reply	other threads:[~2012-02-11 14:55 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-08  7:55 memcg writeback (was Re: [Lsf-pc] [LSF/MM TOPIC] memcg topics.) Greg Thelen
2012-02-08  9:31 ` Wu Fengguang
2012-02-08 20:54   ` Ying Han
2012-02-09 13:50     ` Wu Fengguang
2012-02-13 18:40       ` Ying Han
2012-02-10  5:51   ` Greg Thelen
2012-02-10  5:52     ` Greg Thelen
2012-02-10  9:20       ` Wu Fengguang
2012-02-10 11:47     ` Wu Fengguang
2012-02-11 12:44       ` reclaim the LRU lists full of dirty/writeback pages Wu Fengguang
2012-02-11 14:55         ` Rik van Riel [this message]
2012-02-12  3:10           ` Wu Fengguang
2012-02-12  6:45             ` Wu Fengguang
2012-02-13 15:43             ` Jan Kara
2012-02-14 10:03               ` Wu Fengguang
2012-02-14 13:29                 ` Jan Kara
2012-02-16  4:00                   ` Wu Fengguang
2012-02-16 12:44                     ` Jan Kara
2012-02-16 13:32                       ` Wu Fengguang
2012-02-16 14:06                         ` Wu Fengguang
2012-02-17 16:41                     ` Wu Fengguang
2012-02-20 14:00                       ` Jan Kara
2012-02-14 10:19         ` Mel Gorman
2012-02-14 13:18           ` Wu Fengguang
2012-02-14 13:35             ` Wu Fengguang
2012-02-14 15:51             ` Mel Gorman
2012-02-16  9:50               ` Wu Fengguang
2012-02-16 17:31                 ` Mel Gorman
2012-02-27 14:24                   ` Fengguang Wu
2012-02-16  0:00             ` KAMEZAWA Hiroyuki
2012-02-16  3:04               ` Wu Fengguang
2012-02-16  3:52                 ` KAMEZAWA Hiroyuki
2012-02-16  4:05                   ` Wu Fengguang

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