From: Johannes Weiner <hannes@cmpxchg.org>
To: Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Ying Han <yinghan@google.com>, Michal Hocko <mhocko@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Rik van Riel <riel@redhat.com>,
Minchan Kim <minchan.kim@gmail.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Mel Gorman <mgorman@suse.de>, Greg Thelen <gthelen@google.com>,
Michel Lespinasse <walken@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [patch 7/8] vmscan: memcg-aware unevictable page rescue scanner
Date: Thu, 2 Jun 2011 16:27:38 +0200 [thread overview]
Message-ID: <20110602142738.GC28684@cmpxchg.org> (raw)
In-Reply-To: <BANLkTi=cHVZP+fZwHNM3cXVyw53kJ2HQmw@mail.gmail.com>
On Thu, Jun 02, 2011 at 10:27:15PM +0900, Hiroyuki Kamezawa wrote:
> 2011/6/1 Johannes Weiner <hannes@cmpxchg.org>:
> > Once the per-memcg lru lists are exclusive, the unevictable page
> > rescue scanner can no longer work on the global zone lru lists.
> >
> > This converts it to go through all memcgs and scan their respective
> > unevictable lists instead.
> >
> > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
>
> Hm, isn't it better to have only one GLOBAL LRU for unevictable pages ?
> memcg only needs counter for unevictable pages and LRU is not necessary
> to be per memcg because we don't reclaim it...
That's true, and I will look into it. But keep in mind that it needs
special-casing that one list type from all the others, so maybe it's
just easier to keep it like this.
WARNING: multiple messages have this Message-ID (diff)
From: Johannes Weiner <hannes@cmpxchg.org>
To: Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Ying Han <yinghan@google.com>, Michal Hocko <mhocko@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Rik van Riel <riel@redhat.com>,
Minchan Kim <minchan.kim@gmail.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Mel Gorman <mgorman@suse.de>, Greg Thelen <gthelen@google.com>,
Michel Lespinasse <walken@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [patch 7/8] vmscan: memcg-aware unevictable page rescue scanner
Date: Thu, 2 Jun 2011 16:27:38 +0200 [thread overview]
Message-ID: <20110602142738.GC28684@cmpxchg.org> (raw)
In-Reply-To: <BANLkTi=cHVZP+fZwHNM3cXVyw53kJ2HQmw@mail.gmail.com>
On Thu, Jun 02, 2011 at 10:27:15PM +0900, Hiroyuki Kamezawa wrote:
> 2011/6/1 Johannes Weiner <hannes@cmpxchg.org>:
> > Once the per-memcg lru lists are exclusive, the unevictable page
> > rescue scanner can no longer work on the global zone lru lists.
> >
> > This converts it to go through all memcgs and scan their respective
> > unevictable lists instead.
> >
> > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
>
> Hm, isn't it better to have only one GLOBAL LRU for unevictable pages ?
> memcg only needs counter for unevictable pages and LRU is not necessary
> to be per memcg because we don't reclaim it...
That's true, and I will look into it. But keep in mind that it needs
special-casing that one list type from all the others, so maybe it's
just easier to keep it like this.
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next prev parent reply other threads:[~2011-06-02 14:28 UTC|newest]
Thread overview: 214+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-01 6:25 [patch 0/8] mm: memcg naturalization -rc2 Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-01 6:25 ` [patch 1/8] memcg: remove unused retry signal from reclaim Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-01 6:25 ` [patch 2/8] mm: memcg-aware global reclaim Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-02 13:59 ` Hiroyuki Kamezawa
2011-06-02 13:59 ` Hiroyuki Kamezawa
2011-06-02 15:01 ` Johannes Weiner
2011-06-02 15:01 ` Johannes Weiner
2011-06-02 16:14 ` Hiroyuki Kamezawa
2011-06-02 16:14 ` Hiroyuki Kamezawa
2011-06-02 17:29 ` Johannes Weiner
2011-06-02 17:29 ` Johannes Weiner
2011-06-09 14:01 ` Michal Hocko
2011-06-09 14:01 ` Michal Hocko
2011-06-07 12:25 ` Christoph Hellwig
2011-06-07 12:25 ` Christoph Hellwig
2011-06-08 9:30 ` Johannes Weiner
2011-06-08 9:30 ` Johannes Weiner
2011-06-09 9:26 ` Christoph Hellwig
2011-06-09 9:26 ` Christoph Hellwig
2011-06-09 16:57 ` Johannes Weiner
2011-06-09 16:57 ` Johannes Weiner
2011-06-09 13:12 ` Michal Hocko
2011-06-09 13:12 ` Michal Hocko
2011-06-09 13:45 ` Johannes Weiner
2011-06-09 13:45 ` Johannes Weiner
2011-06-09 15:48 ` Minchan Kim
2011-06-09 15:48 ` Minchan Kim
2011-06-09 17:23 ` Johannes Weiner
2011-06-09 17:23 ` Johannes Weiner
2011-06-09 23:41 ` Minchan Kim
2011-06-09 23:41 ` Minchan Kim
2011-06-09 23:47 ` Minchan Kim
2011-06-09 23:47 ` Minchan Kim
2011-06-10 0:34 ` Johannes Weiner
2011-06-10 0:34 ` Johannes Weiner
2011-06-10 0:48 ` Minchan Kim
2011-06-10 0:48 ` Minchan Kim
2011-08-11 20:39 ` Ying Han
2011-08-11 21:09 ` Johannes Weiner
2011-08-11 21:09 ` Johannes Weiner
2011-08-29 7:15 ` Ying Han
2011-08-29 7:15 ` Ying Han
2011-08-29 7:22 ` Ying Han
2011-08-29 7:22 ` Ying Han
2011-08-29 7:57 ` Johannes Weiner
2011-08-29 7:57 ` Johannes Weiner
2011-08-30 6:08 ` Ying Han
2011-08-30 6:08 ` Ying Han
2011-08-29 19:04 ` Johannes Weiner
2011-08-29 19:04 ` Johannes Weiner
2011-08-29 20:36 ` Ying Han
2011-08-29 21:05 ` Johannes Weiner
2011-08-29 21:05 ` Johannes Weiner
2011-08-30 7:07 ` Ying Han
2011-08-30 7:07 ` Ying Han
2011-08-30 15:14 ` Johannes Weiner
2011-08-30 15:14 ` Johannes Weiner
2011-08-31 22:58 ` Ying Han
2011-08-31 22:58 ` Ying Han
2011-09-21 8:44 ` Johannes Weiner
2011-09-21 8:44 ` Johannes Weiner
2011-08-29 8:07 ` Johannes Weiner
2011-08-29 8:07 ` Johannes Weiner
2011-06-01 6:25 ` [patch 3/8] memcg: reclaim statistics Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-01 6:25 ` [patch 4/8] memcg: rework soft limit reclaim Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-02 5:37 ` Ying Han
2011-06-02 5:37 ` Ying Han
2011-06-02 21:55 ` Ying Han
2011-06-02 21:55 ` Ying Han
2011-06-03 5:25 ` Ying Han
2011-06-03 5:25 ` Ying Han
2011-06-09 15:00 ` Michal Hocko
2011-06-09 15:00 ` Michal Hocko
2011-06-10 7:36 ` Michal Hocko
2011-06-10 7:36 ` Michal Hocko
2011-06-15 22:57 ` Ying Han
2011-06-15 22:57 ` Ying Han
2011-06-16 0:33 ` Ying Han
2011-06-16 0:33 ` Ying Han
2011-06-16 11:45 ` Michal Hocko
2011-06-16 11:45 ` Michal Hocko
2011-06-15 22:48 ` Ying Han
2011-06-15 22:48 ` Ying Han
2011-06-16 11:41 ` Michal Hocko
2011-06-16 11:41 ` Michal Hocko
2011-06-01 6:25 ` [patch 5/8] memcg: remove unused soft limit code Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-13 9:26 ` Michal Hocko
2011-06-13 9:26 ` Michal Hocko
2011-06-01 6:25 ` [patch 6/8] vmscan: change zone_nr_lru_pages to take memcg instead of scan control Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-02 13:30 ` Hiroyuki Kamezawa
2011-06-02 13:30 ` Hiroyuki Kamezawa
2011-06-02 14:28 ` Johannes Weiner
2011-06-02 14:28 ` Johannes Weiner
2011-06-13 9:29 ` Michal Hocko
2011-06-13 9:29 ` Michal Hocko
2011-06-01 6:25 ` [patch 7/8] vmscan: memcg-aware unevictable page rescue scanner Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-02 13:27 ` Hiroyuki Kamezawa
2011-06-02 13:27 ` Hiroyuki Kamezawa
2011-06-02 14:27 ` Johannes Weiner [this message]
2011-06-02 14:27 ` Johannes Weiner
2011-06-02 21:02 ` Ying Han
2011-06-02 21:02 ` Ying Han
2011-06-02 22:01 ` Hiroyuki Kamezawa
2011-06-02 22:01 ` Hiroyuki Kamezawa
2011-06-02 22:19 ` Johannes Weiner
2011-06-02 22:19 ` Johannes Weiner
2011-06-02 23:15 ` Hiroyuki Kamezawa
2011-06-02 23:15 ` Hiroyuki Kamezawa
2011-06-03 5:08 ` Ying Han
2011-06-03 5:08 ` Ying Han
2011-06-13 9:42 ` Michal Hocko
2011-06-13 9:42 ` Michal Hocko
2011-06-13 10:30 ` Johannes Weiner
2011-06-13 10:30 ` Johannes Weiner
2011-06-13 11:18 ` Michal Hocko
2011-06-13 11:18 ` Michal Hocko
2011-07-19 22:47 ` Ying Han
2011-07-20 0:36 ` Johannes Weiner
2011-07-20 0:36 ` Johannes Weiner
2011-08-29 7:28 ` Ying Han
2011-08-29 7:28 ` Ying Han
2011-08-29 7:59 ` Johannes Weiner
2011-08-29 7:59 ` Johannes Weiner
2011-06-01 6:25 ` [patch 8/8] mm: make per-memcg lru lists exclusive Johannes Weiner
2011-06-01 6:25 ` Johannes Weiner
2011-06-02 13:16 ` Hiroyuki Kamezawa
2011-06-02 13:16 ` Hiroyuki Kamezawa
2011-06-02 14:24 ` Johannes Weiner
2011-06-02 14:24 ` Johannes Weiner
2011-06-02 15:54 ` Hiroyuki Kamezawa
2011-06-02 15:54 ` Hiroyuki Kamezawa
2011-06-02 17:57 ` Johannes Weiner
2011-06-02 17:57 ` Johannes Weiner
2011-06-08 15:04 ` Michal Hocko
2011-06-08 15:04 ` Michal Hocko
2011-06-07 12:42 ` Christoph Hellwig
2011-06-07 12:42 ` Christoph Hellwig
2011-06-08 8:54 ` Johannes Weiner
2011-06-08 8:54 ` Johannes Weiner
2011-06-09 9:23 ` Christoph Hellwig
2011-06-09 9:23 ` Christoph Hellwig
2011-08-11 20:33 ` Ying Han
2011-08-12 8:34 ` Johannes Weiner
2011-08-12 8:34 ` Johannes Weiner
2011-08-12 17:08 ` Ying Han
2011-08-12 19:17 ` Johannes Weiner
2011-08-12 19:17 ` Johannes Weiner
2011-08-15 3:01 ` Ying Han
2011-08-15 3:01 ` Ying Han
2011-08-15 1:34 ` Ying Han
2011-08-15 1:34 ` Ying Han
2011-08-15 9:39 ` Johannes Weiner
2011-08-15 9:39 ` Johannes Weiner
2011-06-01 23:52 ` [patch 0/8] mm: memcg naturalization -rc2 Hiroyuki Kamezawa
2011-06-01 23:52 ` Hiroyuki Kamezawa
2011-06-02 0:35 ` Greg Thelen
2011-06-02 0:35 ` Greg Thelen
2011-06-09 1:13 ` Rik van Riel
2011-06-09 1:13 ` Rik van Riel
2011-06-02 4:05 ` Ying Han
2011-06-02 4:05 ` Ying Han
2011-06-02 7:50 ` Johannes Weiner
2011-06-02 7:50 ` Johannes Weiner
2011-06-02 15:51 ` Ying Han
2011-06-02 15:51 ` Ying Han
2011-06-02 17:51 ` Johannes Weiner
2011-06-02 17:51 ` Johannes Weiner
2011-06-08 3:45 ` Ying Han
2011-06-08 3:53 ` Ying Han
2011-06-08 3:53 ` Ying Han
2011-06-08 15:32 ` Johannes Weiner
2011-06-08 15:32 ` Johannes Weiner
2011-06-09 3:52 ` Ying Han
2011-06-09 3:52 ` Ying Han
2011-06-09 8:35 ` Johannes Weiner
2011-06-09 8:35 ` Johannes Weiner
2011-06-09 17:36 ` Ying Han
2011-06-09 17:36 ` Ying Han
2011-06-09 18:36 ` Johannes Weiner
2011-06-09 18:36 ` Johannes Weiner
2011-06-09 21:38 ` Ying Han
2011-06-09 21:38 ` Ying Han
2011-06-09 22:30 ` Ying Han
2011-06-09 22:30 ` Ying Han
2011-06-09 23:31 ` Johannes Weiner
2011-06-09 23:31 ` Johannes Weiner
2011-06-10 0:17 ` Ying Han
2011-06-10 0:17 ` Ying Han
2011-06-02 7:33 ` Johannes Weiner
2011-06-02 7:33 ` Johannes Weiner
2011-06-02 9:06 ` Hiroyuki Kamezawa
2011-06-02 9:06 ` Hiroyuki Kamezawa
2011-06-02 10:00 ` Johannes Weiner
2011-06-02 10:00 ` Johannes Weiner
2011-06-02 12:59 ` Hiroyuki Kamezawa
2011-06-02 12:59 ` Hiroyuki Kamezawa
2011-06-09 1:15 ` Rik van Riel
2011-06-09 1:15 ` Rik van Riel
2011-06-09 8:43 ` Johannes Weiner
2011-06-09 8:43 ` Johannes Weiner
2011-06-09 9:31 ` Christoph Hellwig
2011-06-09 9:31 ` Christoph Hellwig
2011-06-13 9:47 ` Michal Hocko
2011-06-13 9:47 ` Michal Hocko
2011-06-13 10:35 ` Johannes Weiner
2011-06-13 10:35 ` Johannes Weiner
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