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From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Cc: svaidy@linux.vnet.ibm.com, akpm@linux-foundation.org,
	xemul@openvz.org, a.p.zijlstra@chello.nl,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	ebiederm@xmission.com, containers@lists.osdl.org,
	menage@google.com
Subject: Re: [-mm PATCH 6/8] Memory controller add per container LRU and reclaim (v2)
Date: Tue, 10 Jul 2007 21:08:59 +0530	[thread overview]
Message-ID: <4693A813.7090005@linux.vnet.ibm.com> (raw)
In-Reply-To: <20070710084153.C07D91BF6B5@siro.lan>

YAMAMOTO Takashi wrote:
>> Add the meta_page to the per container LRU. The reclaim algorithm has been
>> modified to make the isolate_lru_pages() as a pluggable component. The
>> scan_control data structure now accepts the container on behalf of which
>> reclaims are carried out. try_to_free_pages() has been extended to become
>> container aware.
>>
>> Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
> 
> it seems that the number of pages to scan (nr_active/nr_inactive
> in shrink_zone) is calculated from NR_ACTIVE and NR_INACTIVE of the zone,
> even in the case of per-container reclaim.  is it intended?
> 
> YAMAMOTO Takashi

Good catch again! We do that for now since the per zone LRU is a superset
of the container LRU. I see this as an important TODO item for us -- to
move to reclaim statistics based on per container nr_active and nr_inactive
(to be added).

-- 
	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: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Cc: svaidy@linux.vnet.ibm.com, akpm@linux-foundation.org,
	xemul@openvz.org, a.p.zijlstra@chello.nl,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	ebiederm@xmission.com, containers@lists.osdl.org,
	menage@google.com
Subject: Re: [-mm PATCH 6/8] Memory controller add per container LRU and reclaim (v2)
Date: Tue, 10 Jul 2007 21:08:59 +0530	[thread overview]
Message-ID: <4693A813.7090005@linux.vnet.ibm.com> (raw)
In-Reply-To: <20070710084153.C07D91BF6B5@siro.lan>

YAMAMOTO Takashi wrote:
>> Add the meta_page to the per container LRU. The reclaim algorithm has been
>> modified to make the isolate_lru_pages() as a pluggable component. The
>> scan_control data structure now accepts the container on behalf of which
>> reclaims are carried out. try_to_free_pages() has been extended to become
>> container aware.
>>
>> Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
> 
> it seems that the number of pages to scan (nr_active/nr_inactive
> in shrink_zone) is calculated from NR_ACTIVE and NR_INACTIVE of the zone,
> even in the case of per-container reclaim.  is it intended?
> 
> YAMAMOTO Takashi

Good catch again! We do that for now since the per zone LRU is a superset
of the container LRU. I see this as an important TODO item for us -- to
move to reclaim statistics based on per container nr_active and nr_inactive
(to be added).

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL

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  reply	other threads:[~2007-07-10 15:41 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-06  5:20 [-mm PATCH 0/8] Memory controller introduction (v2) Balbir Singh
2007-07-06  5:20 ` Balbir Singh
2007-07-06  5:20 ` [-mm PATCH 1/8] Memory controller resource counters (v2) Balbir Singh
2007-07-06  5:20   ` Balbir Singh
2007-07-06 17:24   ` Dave Hansen
2007-07-06 17:24     ` Dave Hansen
2007-07-06 21:03     ` Balbir Singh
2007-07-06 21:03       ` Balbir Singh
2007-07-06 21:10       ` Dave Hansen
2007-07-06 21:10         ` Dave Hansen
2007-07-06 21:24         ` Balbir Singh
2007-07-06 21:24           ` Balbir Singh
2007-07-09  7:16     ` Pavel Emelianov
2007-07-09  7:16       ` Pavel Emelianov
2007-07-09 19:56       ` Dave Hansen
2007-07-09 19:56         ` Dave Hansen
2007-07-06  5:21 ` [-mm PATCH 2/8] Memory controller containers setup (v2) Balbir Singh
2007-07-06  5:21   ` Balbir Singh
2007-07-06 17:30   ` Dave Hansen
2007-07-06 17:30     ` Dave Hansen
2007-07-06 21:07     ` Balbir Singh
2007-07-06 21:07       ` Balbir Singh
2007-07-06  5:21 ` [-mm PATCH 3/8] Memory controller accounting " Balbir Singh
2007-07-06  5:21   ` Balbir Singh
2007-07-06  5:21 ` [-mm PATCH 4/8] Memory controller memory accounting (v2) Balbir Singh
2007-07-06  5:21   ` Balbir Singh
2007-07-10  7:26   ` YAMAMOTO Takashi
2007-07-10  7:26     ` YAMAMOTO Takashi
2007-07-10  8:41     ` Balbir Singh
2007-07-10  8:41       ` Balbir Singh
2007-07-10  8:44       ` YAMAMOTO Takashi
2007-07-10  8:44         ` YAMAMOTO Takashi
2007-07-10 15:42         ` Balbir Singh
2007-07-10 15:42           ` Balbir Singh
2007-07-06  5:21 ` [-mm PATCH 5/8] Memory controller task migration (v2) Balbir Singh
2007-07-06  5:21   ` Balbir Singh
2007-07-06  5:22 ` [-mm PATCH 6/8] Memory controller add per container LRU and reclaim (v2) Balbir Singh
2007-07-06  5:22   ` Balbir Singh
2007-07-06  7:05   ` Balbir Singh
2007-07-06  7:05     ` Balbir Singh
2007-07-10  8:41   ` YAMAMOTO Takashi
2007-07-10  8:41     ` YAMAMOTO Takashi
2007-07-10 15:38     ` Balbir Singh [this message]
2007-07-10 15:38       ` Balbir Singh
2007-07-06  5:22 ` [-mm PATCH 7/8] Memory controller OOM handling (v2) Balbir Singh
2007-07-06  5:22   ` Balbir Singh
2007-07-06  5:22 ` [-mm PATCH 8/8] Add switch to control what type of pages to limit (v2) Balbir Singh
2007-07-06  5:22   ` Balbir Singh
2007-07-06  5:55 ` [-mm PATCH 0/8] Memory controller introduction (v2) Balbir Singh
2007-07-06  7:09   ` Balbir Singh
2007-07-06  7:09     ` Balbir Singh

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