From: Balbir Singh <balbir-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Daisuke Nishimura
<nishimura-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
Cc: Linux Containers
<containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org>,
minoura-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org,
yamamoto-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org,
Hugh Dickins <hugh-DTz5qymZ9yRBDgjK7y7TUQ@public.gmane.org>,
Linux MM <linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>
Subject: Re: [RFC][PATCH] another swap controller for cgroup
Date: Mon, 24 Mar 2008 17:52:08 +0530 [thread overview]
Message-ID: <47E79CF0.6040308@linux.vnet.ibm.com> (raw)
In-Reply-To: <47E79A26.3070401-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
Daisuke Nishimura wrote:
> Daisuke Nishimura wrote:
>> Hi, Yamamoto-san.
>>
>> I'm reviewing and testing your patch now.
>>
>
> In building kernel infinitely(in a cgroup of
> memory.limit=64M and swap.limit=128M, with swappiness=100),
> almost all of the swap (1GB) is consumed as swap cache
> after a day or so.
> As a result, processes are occasionally OOM-killed even when
> the swap.usage of the group doesn't exceed the limit.
>
> I don't know why the swap cache uses up swap space.
> I will test whether a similar issue happens without your patch.
> Do you have any thoughts?
>
>
> BTW, I think that it would be better, in the sence of
> isolating memory resource, if there is a framework
> to limit the usage of swap cache.
We had this earlier, but dropped it later due to issues related to swap
readahead and assigning the pages to the correct cgroup.
--
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: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: yamamoto@valinux.co.jp, minoura@valinux.co.jp,
Linux MM <linux-mm@kvack.org>,
Linux Containers <containers@lists.osdl.org>,
Hugh Dickins <hugh@veritas.com>
Subject: Re: [RFC][PATCH] another swap controller for cgroup
Date: Mon, 24 Mar 2008 17:52:08 +0530 [thread overview]
Message-ID: <47E79CF0.6040308@linux.vnet.ibm.com> (raw)
In-Reply-To: <47E79A26.3070401@mxp.nes.nec.co.jp>
Daisuke Nishimura wrote:
> Daisuke Nishimura wrote:
>> Hi, Yamamoto-san.
>>
>> I'm reviewing and testing your patch now.
>>
>
> In building kernel infinitely(in a cgroup of
> memory.limit=64M and swap.limit=128M, with swappiness=100),
> almost all of the swap (1GB) is consumed as swap cache
> after a day or so.
> As a result, processes are occasionally OOM-killed even when
> the swap.usage of the group doesn't exceed the limit.
>
> I don't know why the swap cache uses up swap space.
> I will test whether a similar issue happens without your patch.
> Do you have any thoughts?
>
>
> BTW, I think that it would be better, in the sence of
> isolating memory resource, if there is a framework
> to limit the usage of swap cache.
We had this earlier, but dropped it later due to issues related to swap
readahead and assigning the pages to the correct cgroup.
--
Warm Regards,
Balbir Singh
Linux Technology Center
IBM, ISTL
--
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next prev parent reply other threads:[~2008-03-24 12:22 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-17 2:04 [RFC][PATCH] another swap controller for cgroup YAMAMOTO Takashi
2008-03-17 2:04 ` YAMAMOTO Takashi
[not found] ` <20080317020407.8512E1E7995-Pcsii4f/SVk@public.gmane.org>
2008-03-17 5:11 ` Balbir Singh
2008-03-17 5:11 ` Balbir Singh
2008-03-17 8:15 ` Daisuke Nishimura
2008-03-17 8:15 ` Daisuke Nishimura
[not found] ` <47DE2894.6010306-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
2008-03-17 8:50 ` YAMAMOTO Takashi
2008-03-17 8:50 ` YAMAMOTO Takashi
[not found] ` <20080317085003.EA4511E7A77-Pcsii4f/SVk@public.gmane.org>
2008-04-29 22:50 ` YAMAMOTO Takashi
2008-04-29 22:50 ` YAMAMOTO Takashi
[not found] ` <20080429225047.EC4645A04-Pcsii4f/SVk@public.gmane.org>
2008-04-30 4:09 ` Daisuke Nishimura
2008-04-30 4:09 ` Daisuke Nishimura
[not found] ` <4817F108.40806-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
2008-05-22 4:46 ` YAMAMOTO Takashi
2008-05-22 4:46 ` YAMAMOTO Takashi
[not found] ` <20080522044656.2FB695A0A-Pcsii4f/SVk@public.gmane.org>
2008-05-22 4:54 ` Daisuke Nishimura
2008-05-22 4:54 ` Daisuke Nishimura
2008-05-05 6:11 ` Balbir Singh
2008-05-05 6:11 ` Balbir Singh
[not found] ` <20080505061142.GA13834-SINUvgVNF2CyUtPGxGje5AC/G2K4zDHf@public.gmane.org>
2008-05-07 5:50 ` YAMAMOTO Takashi
2008-05-07 5:50 ` YAMAMOTO Takashi
[not found] ` <20080507055045.4ACBD5A0A-Pcsii4f/SVk@public.gmane.org>
2008-05-08 15:43 ` Balbir Singh
2008-05-08 15:43 ` Balbir Singh
[not found] ` <48231FB6.7000206-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2008-05-14 3:21 ` YAMAMOTO Takashi
2008-05-14 3:21 ` YAMAMOTO Takashi
[not found] ` <20080514032125.46F7D5A07-Pcsii4f/SVk@public.gmane.org>
2008-05-14 3:27 ` Paul Menage
2008-05-14 3:27 ` Paul Menage
2008-05-14 8:44 ` Paul Menage
2008-05-14 8:44 ` Paul Menage
[not found] ` <6599ad830805140144k583f7426k4024dd17a6cd3eb8-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-05-15 6:23 ` YAMAMOTO Takashi
2008-05-15 6:23 ` YAMAMOTO Takashi
[not found] ` <20080515062318.5F1BA5A07-Pcsii4f/SVk@public.gmane.org>
2008-05-15 7:19 ` Paul Menage
2008-05-15 7:19 ` Paul Menage
[not found] ` <6599ad830805150019v5ba23fe1xe5a6e8b80bc194f5-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-05-15 8:56 ` YAMAMOTO Takashi
2008-05-15 8:56 ` YAMAMOTO Takashi
[not found] ` <20080515085606.7239D5A07-Pcsii4f/SVk@public.gmane.org>
2008-05-15 12:01 ` Daisuke Nishimura
2008-05-15 12:01 ` Daisuke Nishimura
[not found] ` <482C2631.1030600-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
2008-05-19 4:14 ` YAMAMOTO Takashi
2008-05-19 4:14 ` YAMAMOTO Takashi
2008-03-24 12:10 ` Daisuke Nishimura
2008-03-24 12:10 ` Daisuke Nishimura
[not found] ` <47E79A26.3070401-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
2008-03-24 12:22 ` Balbir Singh [this message]
2008-03-24 12:22 ` Balbir Singh
[not found] ` <47E79CF0.6040308-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2008-03-25 6:46 ` Daisuke Nishimura
2008-03-25 6:46 ` Daisuke Nishimura
2008-03-25 3:10 ` YAMAMOTO Takashi
2008-03-25 3:10 ` YAMAMOTO Takashi
[not found] ` <20080325031039.549831E9292-Pcsii4f/SVk@public.gmane.org>
2008-03-25 4:35 ` Daisuke Nishimura
2008-03-25 4:35 ` Daisuke Nishimura
[not found] ` <47E88129.1010705-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
2008-03-25 8:57 ` YAMAMOTO Takashi
2008-03-25 8:57 ` YAMAMOTO Takashi
[not found] ` <20080325085723.698C11E936D-Pcsii4f/SVk@public.gmane.org>
2008-03-25 12:35 ` Daisuke Nishimura
2008-03-25 12:35 ` Daisuke Nishimura
[not found] ` <47E8F1A0.5080209-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
2008-03-27 6:28 ` YAMAMOTO Takashi
2008-03-27 6:28 ` YAMAMOTO Takashi
[not found] ` <20080327062834.DAB7E5A02-Pcsii4f/SVk@public.gmane.org>
2008-03-28 9:00 ` Daisuke Nishimura
2008-03-28 9:00 ` Daisuke Nishimura
[not found] ` <47ECB3B1.6040500-YQH0OdQVrdy45+QrQBaojngSJqDPrsil@public.gmane.org>
2008-04-08 3:29 ` YAMAMOTO Takashi
2008-04-10 7:40 ` YAMAMOTO Takashi
2008-04-10 7:40 ` YAMAMOTO Takashi
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