From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
YAMAMOTO Takashi <yamamoto@valinux.co.jp>,
Paul Menage <menage@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [RFC 5/5] Memory controller soft limit reclaim on contention
Date: Mon, 30 Jun 2008 13:41:19 +0530 [thread overview]
Message-ID: <48689527.7070403@linux.vnet.ibm.com> (raw)
In-Reply-To: <20080630165125.37E6.KOSAKI.MOTOHIRO@jp.fujitsu.com>
KOSAKI Motohiro wrote:
> yes, memcg used only one page.
> but mem_cgroup_reclaim_on_contention() reclaim for generic alloc_pages(), instead for memcg.
> we can't assume memcg usage.
> isn't it?
Yes, but the reclaim is from memcg pages (memcg groups that are over their soft
limit). I am not sure if I understand your point? If your claim is that we don't
free up pages of at-least order (as desired by __alloc_pages_internal()), that
is correct. We can ensure that we do a pass over memcg and generic zone LRU.
--
Warm Regards,
Balbir Singh
Linux Technology Center
IBM, ISTL
WARNING: multiple messages have this Message-ID (diff)
From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
YAMAMOTO Takashi <yamamoto@valinux.co.jp>,
Paul Menage <menage@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [RFC 5/5] Memory controller soft limit reclaim on contention
Date: Mon, 30 Jun 2008 13:41:19 +0530 [thread overview]
Message-ID: <48689527.7070403@linux.vnet.ibm.com> (raw)
In-Reply-To: <20080630165125.37E6.KOSAKI.MOTOHIRO@jp.fujitsu.com>
KOSAKI Motohiro wrote:
> yes, memcg used only one page.
> but mem_cgroup_reclaim_on_contention() reclaim for generic alloc_pages(), instead for memcg.
> we can't assume memcg usage.
> isn't it?
Yes, but the reclaim is from memcg pages (memcg groups that are over their soft
limit). I am not sure if I understand your point? If your claim is that we don't
free up pages of at-least order (as desired by __alloc_pages_internal()), that
is correct. We can ensure that we do a pass over memcg and generic zone LRU.
--
Warm Regards,
Balbir Singh
Linux Technology Center
IBM, ISTL
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next prev parent reply other threads:[~2008-06-30 8:12 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-27 15:18 [RFC 0/5] Memory controller soft limit introduction (v3) Balbir Singh
2008-06-27 15:18 ` Balbir Singh
2008-06-27 15:18 ` [RFC 1/5] Memory controller soft limit documentation Balbir Singh
2008-06-27 15:18 ` Balbir Singh
2008-06-27 15:18 ` [RFC 2/5] Add delete max to prio heap Balbir Singh
2008-06-27 15:18 ` Balbir Singh
2008-06-27 15:18 ` [RFC 3/5] Replacement policy on heap overfull Balbir Singh
2008-06-27 15:18 ` Balbir Singh
2008-06-27 15:37 ` Paul Menage
2008-06-27 15:37 ` Paul Menage
2008-06-30 3:46 ` Balbir Singh
2008-06-30 3:46 ` Balbir Singh
2008-06-27 15:18 ` [RFC 4/5] Memory controller soft limit resource counter additions Balbir Singh
2008-06-27 15:18 ` Balbir Singh
2008-06-27 15:19 ` [RFC 5/5] Memory controller soft limit reclaim on contention Balbir Singh
2008-06-27 15:19 ` Balbir Singh
2008-06-27 16:09 ` Paul Menage
2008-06-27 16:09 ` Paul Menage
2008-06-29 4:48 ` Balbir Singh
2008-06-29 4:48 ` Balbir Singh
2008-06-30 3:42 ` Balbir Singh
2008-06-30 3:42 ` Balbir Singh
2008-06-28 4:22 ` KAMEZAWA Hiroyuki
2008-06-28 4:22 ` KAMEZAWA Hiroyuki
2008-06-30 7:33 ` KOSAKI Motohiro
2008-06-30 7:33 ` KOSAKI Motohiro
2008-06-30 7:48 ` Balbir Singh
2008-06-30 7:48 ` Balbir Singh
2008-06-30 7:56 ` KOSAKI Motohiro
2008-06-30 7:56 ` KOSAKI Motohiro
2008-06-30 8:11 ` Balbir Singh [this message]
2008-06-30 8:11 ` Balbir Singh
2008-06-30 8:17 ` KOSAKI Motohiro
2008-06-30 8:17 ` KOSAKI Motohiro
2008-06-28 4:36 ` [RFC 0/5] Memory controller soft limit introduction (v3) KAMEZAWA Hiroyuki
2008-06-28 4:36 ` KAMEZAWA Hiroyuki
2008-06-29 5:02 ` Balbir Singh
2008-06-29 5:02 ` Balbir Singh
2008-06-30 1:20 ` KAMEZAWA Hiroyuki
2008-06-30 1:20 ` KAMEZAWA Hiroyuki
2008-06-30 1:50 ` KAMEZAWA Hiroyuki
2008-06-30 1:50 ` KAMEZAWA Hiroyuki
2008-06-30 2:02 ` KAMEZAWA Hiroyuki
2008-06-30 2:02 ` KAMEZAWA Hiroyuki
2008-06-30 3:41 ` Balbir Singh
2008-06-30 3:41 ` Balbir Singh
2008-06-30 3:57 ` KAMEZAWA Hiroyuki
2008-06-30 3:57 ` KAMEZAWA Hiroyuki
2008-06-30 4:00 ` Balbir Singh
2008-06-30 4:00 ` Balbir Singh
2008-06-30 4:19 ` KAMEZAWA Hiroyuki
2008-06-30 4:19 ` KAMEZAWA Hiroyuki
2008-06-30 4:40 ` Balbir Singh
2008-06-30 4:40 ` Balbir Singh
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