From: Ying Han <yinghan@google.com>
To: Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
Balbir Singh <balbir@linux.vnet.ibm.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-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [patch 7/8] vmscan: memcg-aware unevictable page rescue scanner
Date: Thu, 2 Jun 2011 14:02:31 -0700 [thread overview]
Message-ID: <BANLkTimvuwLYwzRT-6k_oVwKBzBEo500s-rXETerTskYHfontQ@mail.gmail.com> (raw)
In-Reply-To: <BANLkTi=cHVZP+fZwHNM3cXVyw53kJ2HQmw@mail.gmail.com>
On Thu, Jun 2, 2011 at 6:27 AM, Hiroyuki Kamezawa
<kamezawa.hiroyuki@gmail.com> 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...
Hmm. Are we suggesting to keep one un-evictable LRU list for all
memcgs? So we will have
exclusive lru only for file and anon. If so, we are not done to make
all the lru list being exclusive
which is critical later to improve the zone->lru_lock contention
across the memcgs
Sorry If i misinterpret the suggestion here
--Ying
> Thanks,
> -Kame
>
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next prev parent reply other threads:[~2011-06-02 21:02 UTC|newest]
Thread overview: 110+ 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 ` [patch 1/8] memcg: remove unused retry signal from reclaim Johannes Weiner
2011-06-01 6:25 ` [patch 2/8] mm: memcg-aware global reclaim Johannes Weiner
2011-06-02 13:59 ` Hiroyuki Kamezawa
2011-06-02 15:01 ` Johannes Weiner
2011-06-02 16:14 ` Hiroyuki Kamezawa
2011-06-02 17:29 ` Johannes Weiner
2011-06-09 14:01 ` Michal Hocko
2011-06-07 12:25 ` Christoph Hellwig
2011-06-08 9:30 ` Johannes Weiner
2011-06-09 9:26 ` Christoph Hellwig
2011-06-09 16:57 ` Johannes Weiner
2011-06-09 13:12 ` Michal Hocko
2011-06-09 13:45 ` Johannes Weiner
2011-06-09 15:48 ` Minchan Kim
2011-06-09 17:23 ` Johannes Weiner
2011-06-09 23:41 ` Minchan Kim
2011-06-09 23:47 ` Minchan Kim
2011-06-10 0:34 ` Johannes Weiner
2011-06-10 0:48 ` Minchan Kim
2011-08-11 20:39 ` Ying Han
2011-08-11 21:09 ` Johannes Weiner
2011-08-29 7:15 ` Ying Han
2011-08-29 7:22 ` Ying Han
2011-08-29 7:57 ` Johannes Weiner
2011-08-30 6:08 ` Ying Han
2011-08-29 19:04 ` Johannes Weiner
2011-08-29 20:36 ` Ying Han
2011-08-29 21:05 ` Johannes Weiner
2011-08-30 7:07 ` Ying Han
2011-08-30 15:14 ` Johannes Weiner
2011-08-31 22:58 ` Ying Han
2011-09-21 8:44 ` 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 ` [patch 4/8] memcg: rework soft limit reclaim Johannes Weiner
2011-06-02 5:37 ` Ying Han
2011-06-02 21:55 ` Ying Han
2011-06-03 5:25 ` Ying Han
2011-06-09 15:00 ` Michal Hocko
2011-06-10 7:36 ` Michal Hocko
2011-06-15 22:57 ` Ying Han
2011-06-16 0:33 ` Ying Han
2011-06-16 11:45 ` Michal Hocko
2011-06-15 22:48 ` Ying Han
2011-06-16 11:41 ` Michal Hocko
2011-06-01 6:25 ` [patch 5/8] memcg: remove unused soft limit code Johannes Weiner
2011-06-13 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
2011-06-02 13:30 ` Hiroyuki Kamezawa
2011-06-02 14:28 ` Johannes Weiner
2011-06-13 9:29 ` Michal Hocko
2011-06-01 6:25 ` [patch 7/8] vmscan: memcg-aware unevictable page rescue scanner Johannes Weiner
2011-06-02 13:27 ` Hiroyuki Kamezawa
2011-06-02 14:27 ` Johannes Weiner
2011-06-02 21:02 ` Ying Han [this message]
2011-06-02 22:01 ` Hiroyuki Kamezawa
2011-06-02 22:19 ` Johannes Weiner
2011-06-02 23:15 ` Hiroyuki Kamezawa
2011-06-03 5:08 ` Ying Han
2011-06-13 9:42 ` Michal Hocko
2011-06-13 10:30 ` Johannes Weiner
2011-06-13 11:18 ` Michal Hocko
2011-07-19 22:47 ` Ying Han
2011-07-20 0:36 ` Johannes Weiner
2011-08-29 7:28 ` Ying Han
2011-08-29 7:59 ` Johannes Weiner
2011-06-01 6:25 ` [patch 8/8] mm: make per-memcg lru lists exclusive Johannes Weiner
2011-06-02 13:16 ` Hiroyuki Kamezawa
2011-06-02 14:24 ` Johannes Weiner
2011-06-02 15:54 ` Hiroyuki Kamezawa
2011-06-02 17:57 ` Johannes Weiner
2011-06-08 15:04 ` Michal Hocko
2011-06-07 12:42 ` Christoph Hellwig
2011-06-08 8:54 ` Johannes Weiner
2011-06-09 9:23 ` Christoph Hellwig
2011-08-11 20:33 ` Ying Han
2011-08-12 8:34 ` Johannes Weiner
2011-08-12 17:08 ` Ying Han
2011-08-12 19:17 ` Johannes Weiner
2011-08-15 3:01 ` Ying Han
2011-08-15 1:34 ` Ying Han
2011-08-15 9:39 ` Johannes Weiner
2011-06-01 23:52 ` [patch 0/8] mm: memcg naturalization -rc2 Hiroyuki Kamezawa
2011-06-02 0:35 ` Greg Thelen
2011-06-09 1:13 ` Rik van Riel
2011-06-02 4:05 ` Ying Han
2011-06-02 7:50 ` Johannes Weiner
2011-06-02 15:51 ` Ying Han
2011-06-02 17:51 ` Johannes Weiner
2011-06-08 3:45 ` Ying Han
2011-06-08 3:53 ` Ying Han
2011-06-08 15:32 ` Johannes Weiner
2011-06-09 3:52 ` Ying Han
2011-06-09 8:35 ` Johannes Weiner
2011-06-09 17:36 ` Ying Han
2011-06-09 18:36 ` Johannes Weiner
2011-06-09 21:38 ` Ying Han
2011-06-09 22:30 ` Ying Han
2011-06-09 23:31 ` Johannes Weiner
2011-06-10 0:17 ` Ying Han
2011-06-02 7:33 ` Johannes Weiner
2011-06-02 9:06 ` Hiroyuki Kamezawa
2011-06-02 10:00 ` Johannes Weiner
2011-06-02 12:59 ` Hiroyuki Kamezawa
2011-06-09 1:15 ` Rik van Riel
2011-06-09 8:43 ` Johannes Weiner
2011-06-09 9:31 ` Christoph Hellwig
2011-06-13 9:47 ` Michal Hocko
2011-06-13 10:35 ` Johannes Weiner
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