From: Anton Vorontsov <anton.vorontsov@linaro.org>
To: David Rientjes <rientjes@google.com>
Cc: "Michal Hocko" <mhocko@suse.cz>,
"KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com>,
"Arve Hjønnevåg" <arve@android.com>,
"Rik van Riel" <riel@redhat.com>, "Pavel Machek" <pavel@ucw.cz>,
"Greg Kroah-Hartman" <gregkh@suse.de>,
"Andrew Morton" <akpm@linux-foundation.org>,
"John Stultz" <john.stultz@linaro.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"Johannes Weiner" <hannes@cmpxchg.org>,
"KAMEZAWA Hiroyuki" <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: Android low memory killer vs. memory pressure notifications
Date: Tue, 20 Dec 2011 18:56:54 +0400 [thread overview]
Message-ID: <20111220145654.GA26881@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <alpine.DEB.2.00.1112191110060.19949@chino.kir.corp.google.com>
On Mon, Dec 19, 2011 at 11:12:09AM -0800, David Rientjes wrote:
> On Mon, 19 Dec 2011, Michal Hocko wrote:
>
> > page_cgroup is 16B per page and with the current Johannes' memcg
> > naturalization work (in the mmotm tree) we are down to 8B per page (we
> > got rid of lru). Kamezawa has some patches to get rid of the flags so we
> > will be down to 4B per page on 32b. Is this still too much?
> > I would be really careful about a yet another lowmem notification
> > mechanism.
> >
>
> There was always general interest in a low memory notification mechanism
> even prior to memcg, see http://lwn.net/Articles/268732/ from Marcelo and
> KOSAKI-san. The desire is not only to avoid the metadata overhead of
> memcg, but also to avoid cgroups entirely.
Hm, assuming that metadata is no longer an issue, why do you think avoiding
cgroups would be a good idea?
Thanks,
--
Anton Vorontsov
Email: cbouatmailru@gmail.com
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next prev parent reply other threads:[~2011-12-20 14:57 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-19 2:53 Android low memory killer vs. memory pressure notifications Anton Vorontsov
2011-12-19 7:48 ` Minchan Kim
2011-12-19 19:05 ` David Rientjes
2011-12-19 10:39 ` Alan Cox
2011-12-19 16:16 ` KOSAKI Motohiro
2011-12-19 16:24 ` Rik van Riel
2011-12-19 12:12 ` Michal Hocko
2011-12-19 19:12 ` David Rientjes
2011-12-20 14:56 ` Anton Vorontsov [this message]
2011-12-20 21:36 ` David Rientjes
2011-12-21 0:28 ` Anton Vorontsov
2011-12-21 1:14 ` Frank Rowand
2011-12-21 2:07 ` Anton Vorontsov
2011-12-21 2:30 ` Frank Rowand
2011-12-21 23:41 ` Anton Vorontsov
2011-12-22 1:16 ` KOSAKI Motohiro
2011-12-22 18:53 ` Frank Rowand
2011-12-21 2:50 ` David Rientjes
2011-12-20 2:16 ` Anton Vorontsov
2011-12-19 16:11 ` KOSAKI Motohiro
2011-12-20 0:30 ` Hiroyuki Kamezawa
2011-12-19 17:30 ` KOSAKI Motohiro
2011-12-19 17:34 ` KOSAKI Motohiro
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