From: Tejun Heo <tj@kernel.org>
To: Anton Vorontsov <anton.vorontsov@linaro.org>
Cc: David Rientjes <rientjes@google.com>,
Pekka Enberg <penberg@kernel.org>, Mel Gorman <mgorman@suse.de>,
Glauber Costa <glommer@parallels.com>,
Michal Hocko <mhocko@suse.cz>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Luiz Capitulino <lcapitulino@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Greg Thelen <gthelen@google.com>,
Leonid Moiseichuk <leonid.moiseichuk@nokia.com>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Minchan Kim <minchan@kernel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
John Stultz <john.stultz@linaro.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linaro-kernel@lists.linaro.org, patches@linaro.org,
kernel-team@android.com
Subject: Re: [PATCH 1/2] Add mempressure cgroup
Date: Wed, 9 Jan 2013 12:39:45 -0800 [thread overview]
Message-ID: <20130109203945.GB20454@htj.dyndns.org> (raw)
In-Reply-To: <20130109203731.GA20454@htj.dyndns.org>
On Wed, Jan 09, 2013 at 12:37:31PM -0800, Tejun Heo wrote:
> Hello,
>
> Can you please cc me too when posting further patches? I kinda missed
> the whole discussion upto this point.
>
> On Fri, Jan 04, 2013 at 12:29:11AM -0800, Anton Vorontsov wrote:
> > This commit implements David Rientjes' idea of mempressure cgroup.
> >
> > The main characteristics are the same to what I've tried to add to vmevent
> > API; internally, it uses Mel Gorman's idea of scanned/reclaimed ratio for
> > pressure index calculation. But we don't expose the index to the userland.
> > Instead, there are three levels of the pressure:
> >
> > o low (just reclaiming, e.g. caches are draining);
> > o medium (allocation cost becomes high, e.g. swapping);
> > o oom (about to oom very soon).
> >
> > The rationale behind exposing levels and not the raw pressure index
> > described here: http://lkml.org/lkml/2012/11/16/675
> >
> > For a task it is possible to be in both cpusets, memcg and mempressure
> > cgroups, so by rearranging the tasks it is possible to watch a specific
> > pressure (i.e. caused by cpuset and/or memcg).
>
> So, cgroup is headed towards single hierarchy. Dunno how much it
> would affect mempressure but it probably isn't wise to design with
> focus on multiple hierarchies.
Also, how are you implementing hierarchical behavior? All controllers
should support hierarchy. Can you please explain how the interface
would work in detail?
Thanks.
--
tejun
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2013-01-09 20:39 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-04 8:27 [PATCH 0/2] Mempressure cgroup Anton Vorontsov
2013-01-04 8:29 ` [PATCH 1/2] Add mempressure cgroup Anton Vorontsov
2013-01-04 15:05 ` Kirill A. Shutemov
2013-01-07 8:51 ` Kamezawa Hiroyuki
2013-01-08 7:29 ` Anton Vorontsov
2013-01-08 7:57 ` leonid.moiseichuk
2013-01-08 8:24 ` Kamezawa Hiroyuki
2013-01-08 8:49 ` Minchan Kim
2013-01-09 22:14 ` Anton Vorontsov
2013-01-11 5:12 ` Minchan Kim
2013-01-11 5:38 ` Anton Vorontsov
2013-01-11 5:56 ` Minchan Kim
2013-01-11 6:09 ` Anton Vorontsov
2013-01-08 21:44 ` Andrew Morton
2013-01-09 14:10 ` Glauber Costa
2013-01-09 20:28 ` Andrew Morton
2013-01-09 8:56 ` Glauber Costa
2013-01-09 9:15 ` Andrew Morton
2013-01-09 13:43 ` Glauber Costa
2013-01-09 20:37 ` Tejun Heo
2013-01-09 20:39 ` Tejun Heo [this message]
2013-01-09 21:20 ` Glauber Costa
2013-01-09 21:36 ` Anton Vorontsov
2013-01-09 21:55 ` Tejun Heo
2013-01-09 22:04 ` Tejun Heo
2013-01-09 22:06 ` Anton Vorontsov
2013-01-09 22:21 ` Tejun Heo
2013-01-10 7:18 ` Glauber Costa
2013-01-13 8:50 ` Simon Jeons
2013-01-13 8:52 ` Wanpeng Li
2013-01-13 8:52 ` Wanpeng Li
2013-01-04 8:29 ` [PATCH 2/2] Add shrinker interface for " Anton Vorontsov
2013-01-11 19:13 ` [PATCH 0/2] Mempressure cgroup Luiz Capitulino
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130109203945.GB20454@htj.dyndns.org \
--to=tj@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=anton.vorontsov@linaro.org \
--cc=b.zolnierkie@samsung.com \
--cc=glommer@parallels.com \
--cc=gthelen@google.com \
--cc=john.stultz@linaro.org \
--cc=kernel-team@android.com \
--cc=kirill@shutemov.name \
--cc=kosaki.motohiro@gmail.com \
--cc=lcapitulino@redhat.com \
--cc=leonid.moiseichuk@nokia.com \
--cc=linaro-kernel@lists.linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=mhocko@suse.cz \
--cc=minchan@kernel.org \
--cc=patches@linaro.org \
--cc=penberg@kernel.org \
--cc=rientjes@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).