From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Li Zefan <lizf@cn.fujitsu.com>, Paul Menage <menage@google.com>
Subject: Re: [PATCH -mmotm 0/8] memcg: recharge at task move
Date: Mon, 9 Nov 2009 10:38:06 +0530 [thread overview]
Message-ID: <20091109050806.GB3042@balbir.in.ibm.com> (raw)
In-Reply-To: <20091106141011.3ded1551.nishimura@mxp.nes.nec.co.jp>
* nishimura@mxp.nes.nec.co.jp <nishimura@mxp.nes.nec.co.jp> [2009-11-06 14:10:11]:
> Hi.
>
> In current memcg, charges associated with a task aren't moved to the new cgroup
> at task move. These patches are for this feature, that is, for recharging to
> the new cgroup and, of course, uncharging from old cgroup at task move.
>
> Current virsion supports only recharge of non-shared(mapcount == 1) anonymous pages
> and swaps of those pages. I think it's enough as a first step.
>
What is the motivation? Is to provide better accountability? I think
it is worthwhile to look into it, provided the cost of migration is
not too high. It was on my list of things to look at, but I found that
if cpu/memory are mounted together and the cost of migration is high,
it can be a bottleneck in some cases. I'll review the patches a bit
more.
--
Balbir
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next prev parent reply other threads:[~2009-11-09 5:08 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-06 5:10 Daisuke Nishimura
2009-11-06 5:11 ` [PATCH -mmotm 1/8] cgroup: introduce cancel_attach() Daisuke Nishimura
2009-11-09 6:57 ` Balbir Singh
2009-11-09 7:18 ` Li Zefan
2009-11-09 7:23 ` Daisuke Nishimura
2009-11-09 7:23 ` Li Zefan
2009-11-09 7:38 ` Daisuke Nishimura
2009-11-06 5:11 ` [PATCH -mmotm 2/8] memcg: move memcg_tasklist mutex Daisuke Nishimura
2009-11-06 5:54 ` KAMEZAWA Hiroyuki
2009-11-06 7:49 ` Daisuke Nishimura
2009-11-06 8:02 ` KAMEZAWA Hiroyuki
2009-11-10 19:14 ` Balbir Singh
2009-11-10 23:44 ` Daisuke Nishimura
2009-11-06 5:12 ` [PATCH -mmotm 3/8] memcg: add mem_cgroup_cancel_charge() Daisuke Nishimura
2009-11-06 5:13 ` [PATCH -mmotm 4/8] memcg: cleanup mem_cgroup_move_parent() Daisuke Nishimura
2009-11-06 5:56 ` KAMEZAWA Hiroyuki
2009-11-06 5:14 ` [PATCH -mmotm 5/8] memcg: add interface to recharge at task move Daisuke Nishimura
2009-11-06 6:06 ` KAMEZAWA Hiroyuki
2009-11-06 5:14 ` [PATCH -mmotm 6/8] memcg: recharge charges of anonymous page Daisuke Nishimura
2009-11-06 6:35 ` KAMEZAWA Hiroyuki
2009-11-09 0:31 ` Daisuke Nishimura
2009-11-06 5:15 ` [PATCH -mmotm 7/8] memcg: avoid oom during recharge at task move Daisuke Nishimura
2009-11-06 6:39 ` KAMEZAWA Hiroyuki
2009-11-06 5:16 ` [PATCH -mmotm 8/8] memcg: recharge charges of anonymous swap Daisuke Nishimura
2009-11-06 6:45 ` [PATCH -mmotm 0/8] memcg: recharge at task move KAMEZAWA Hiroyuki
2009-11-09 1:44 ` Daisuke Nishimura
2009-11-09 5:16 ` KAMEZAWA Hiroyuki
2009-11-09 5:08 ` Balbir Singh [this message]
2009-11-09 8:24 ` Daisuke Nishimura
2009-11-11 1:35 ` [PATCH -mmotm 0/3] some cleanups for memcg Daisuke Nishimura
2009-11-11 1:36 ` [PATCH -mmotm 1/3] memcg: add mem_cgroup_cancel_charge() Daisuke Nishimura
2009-11-11 4:24 ` Balbir Singh
2009-11-11 1:37 ` [PATCH -mmotm 2/3] memcg: cleanup mem_cgroup_move_parent() Daisuke Nishimura
2009-11-11 14:40 ` Balbir Singh
2009-11-11 15:16 ` Daisuke Nishimura
2009-11-11 1:39 ` [PATCH -mmotm 3/3] memcg: remove memcg_tasklist Daisuke Nishimura
2009-11-11 1:49 ` KAMEZAWA Hiroyuki
2009-11-11 16:01 ` Balbir Singh
2009-11-12 8:05 ` Daisuke Nishimura
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