From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: balbir@linux.vnet.ibm.com,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] Add file based RSS accounting for memory resource controller (v2)
Date: Fri, 17 Apr 2009 09:17:37 +0900 [thread overview]
Message-ID: <20090417091737.27d71ab7.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <20090417091459.dac2cc39.kamezawa.hiroyu@jp.fujitsu.com>
On Fri, 17 Apr 2009 09:14:59 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> page_cgroup->mem_cgroup != try_get_mem_cgroup_from_mm(mm); in many many cases.
>
> For example, libc and /bin/*** is tend to be loaded into default cgroup at boot but
> used by many cgroups. But mapcount of page caches for /bin/*** is 0 if not running.
>
> Then, File_Mapped can be greater than Cached easily if you use mm->owner.
>
> I can't estimate RSS in *my* cgroup if File_Mapped includes pages which is under
> other cgroups. It's meaningless.
> Especially, when Cached==0 but File_Mapped > 0, I think "oh, the kernel leaks somehing..hmm..."
>
> By useing page_cgroup->mem_cgroup, we can avoid above mess.
>
And, if pc->mem_cgroup is used, we can ignore "task move".
Thanks,
-Kame
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next prev parent reply other threads:[~2009-04-17 0:19 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-15 12:05 Balbir Singh
2009-04-16 0:53 ` KAMEZAWA Hiroyuki
2009-04-16 1:59 ` Balbir Singh
2009-04-16 2:02 ` KAMEZAWA Hiroyuki
2009-04-16 7:40 ` KAMEZAWA Hiroyuki
2009-04-16 8:15 ` KAMEZAWA Hiroyuki
2009-04-16 12:03 ` Balbir Singh
2009-04-17 0:14 ` KAMEZAWA Hiroyuki
2009-04-17 0:17 ` KAMEZAWA Hiroyuki [this message]
2009-04-17 1:40 ` Balbir Singh
2009-04-17 2:03 ` KAMEZAWA Hiroyuki
2009-04-17 3:45 ` Balbir Singh
2009-04-17 3:49 ` KAMEZAWA Hiroyuki
2009-04-17 4:56 ` Balbir Singh
2009-04-17 5:17 ` KAMEZAWA Hiroyuki
2009-04-17 6:47 ` Balbir Singh
2009-04-17 6:56 ` KAMEZAWA Hiroyuki
2009-04-17 14:18 ` [PATCH] Add file based RSS accounting for memory resource controller (v3) Balbir Singh
2009-04-17 16:30 ` KAMEZAWA Hiroyuki
2009-04-21 3:00 ` Balbir Singh
2009-04-21 20:25 ` Andrew Morton
2009-04-22 0:02 ` KAMEZAWA Hiroyuki
2009-04-22 3:16 ` [PATCH] memcg: remove trylock_page_cgroup KAMEZAWA Hiroyuki
2009-04-22 3:41 ` Andrew Morton
2009-04-22 4:41 ` KAMEZAWA Hiroyuki
2009-04-22 6:01 ` Andrew Morton
2009-04-22 6:13 ` KAMEZAWA Hiroyuki
2009-04-22 3:19 ` [PATCH] Add file based RSS accounting for memory resource controller (v3) Balbir Singh
2009-04-16 12:14 ` [PATCH] Add file based RSS accounting for memory resource controller (v2) Balbir Singh
2009-04-16 23:57 ` KAMEZAWA Hiroyuki
2009-04-16 3:59 ` Bharata B Rao
2009-04-16 4:34 ` Balbir Singh
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