From: Anton Vorontsov <anton-9xeibp6oKSgdnm+yROfE0A@public.gmane.org>
To: Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
Cc: Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org,
handai.szj-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
Mel Gorman <mgorman-l3A5Bk7waGM@public.gmane.org>
Subject: Re: [PATCH v2 2/5] memcg: provide root figures from system totals
Date: Wed, 20 Mar 2013 09:40:48 -0700 [thread overview]
Message-ID: <20130320164047.GA22177@lizard.fhda.edu> (raw)
In-Reply-To: <51496E71.5010707-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
On Wed, Mar 20, 2013 at 12:08:17PM +0400, Glauber Costa wrote:
[...]
> >> The fact that I keep bypassing when hierarchy is present, it is
> >> more of a reuse of the infrastructure since it's there anyway.
> >>
> >> Also, I would like the root memcg to be usable, albeit cheap, for
> >> projects like memory pressure notifications.
> >
> > root memcg without any childre, right?
> >
> yes, of course.
Just want to raise a voice of support for this one. Thanks to Glauber's
efforts, we might not need another memory pressure interface for
CONFIG_MEMCG=n case, since we might have CONFIG_MEMCG=y that will be super
cheap when used with just a root memcg w/o children, and still usable for
mem pressure. So this particular scenario is actually in demand[1].
Thanks!
Anton
[1] http://lkml.indiana.edu/hypermail/linux/kernel/1302.2/03173.html
WARNING: multiple messages have this Message-ID (diff)
From: Anton Vorontsov <anton@enomsg.org>
To: Glauber Costa <glommer@parallels.com>
Cc: Michal Hocko <mhocko@suse.cz>,
linux-mm@kvack.org, cgroups@vger.kernel.org,
Tejun Heo <tj@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
kamezawa.hiroyu@jp.fujitsu.com, handai.szj@gmail.com,
Johannes Weiner <hannes@cmpxchg.org>,
Mel Gorman <mgorman@suse.de>
Subject: Re: [PATCH v2 2/5] memcg: provide root figures from system totals
Date: Wed, 20 Mar 2013 09:40:48 -0700 [thread overview]
Message-ID: <20130320164047.GA22177@lizard.fhda.edu> (raw)
In-Reply-To: <51496E71.5010707@parallels.com>
On Wed, Mar 20, 2013 at 12:08:17PM +0400, Glauber Costa wrote:
[...]
> >> The fact that I keep bypassing when hierarchy is present, it is
> >> more of a reuse of the infrastructure since it's there anyway.
> >>
> >> Also, I would like the root memcg to be usable, albeit cheap, for
> >> projects like memory pressure notifications.
> >
> > root memcg without any childre, right?
> >
> yes, of course.
Just want to raise a voice of support for this one. Thanks to Glauber's
efforts, we might not need another memory pressure interface for
CONFIG_MEMCG=n case, since we might have CONFIG_MEMCG=y that will be super
cheap when used with just a root memcg w/o children, and still usable for
mem pressure. So this particular scenario is actually in demand[1].
Thanks!
Anton
[1] http://lkml.indiana.edu/hypermail/linux/kernel/1302.2/03173.html
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next prev parent reply other threads:[~2013-03-20 16:40 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-05 13:10 [PATCH v2 0/5] bypass root memcg charges if no memcgs are possible Glauber Costa
2013-03-05 13:10 ` Glauber Costa
[not found] ` <1362489058-3455-1-git-send-email-glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-05 13:10 ` [PATCH v2 1/5] memcg: make nocpu_base available for non hotplug Glauber Costa
2013-03-05 13:10 ` Glauber Costa
[not found] ` <1362489058-3455-2-git-send-email-glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-06 0:04 ` Kamezawa Hiroyuki
2013-03-06 0:04 ` Kamezawa Hiroyuki
2013-03-19 11:07 ` Michal Hocko
2013-03-05 13:10 ` [PATCH v2 2/5] memcg: provide root figures from system totals Glauber Costa
2013-03-05 13:10 ` Glauber Costa
2013-03-06 0:27 ` Kamezawa Hiroyuki
[not found] ` <51368D80.20701-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2013-03-06 8:30 ` Glauber Costa
2013-03-06 8:30 ` Glauber Costa
[not found] ` <5136FEC2.2050004-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-06 10:45 ` Kamezawa Hiroyuki
2013-03-06 10:45 ` Kamezawa Hiroyuki
[not found] ` <51371E4A.7090807-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2013-03-06 10:52 ` Glauber Costa
2013-03-06 10:52 ` Glauber Costa
[not found] ` <51371FEF.3020507-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-06 10:59 ` Kamezawa Hiroyuki
2013-03-06 10:59 ` Kamezawa Hiroyuki
[not found] ` <513721A5.6080401-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2013-03-13 6:58 ` Sha Zhengju
2013-03-13 6:58 ` Sha Zhengju
[not found] ` <CAFj3OHWm_GjLFwNEE=D69DR-YSF25AZvKTLHpyHq7aYDi12b0g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-03-13 9:15 ` Kamezawa Hiroyuki
2013-03-13 9:15 ` Kamezawa Hiroyuki
2013-03-13 9:59 ` Sha Zhengju
2013-03-14 0:03 ` Kamezawa Hiroyuki
2013-03-14 0:03 ` Kamezawa Hiroyuki
2013-03-06 10:50 ` Kamezawa Hiroyuki
2013-03-06 10:50 ` Kamezawa Hiroyuki
[not found] ` <1362489058-3455-3-git-send-email-glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-19 12:46 ` Michal Hocko
2013-03-19 12:46 ` Michal Hocko
[not found] ` <20130319124650.GE7869-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2013-03-19 12:55 ` Michal Hocko
2013-03-19 12:55 ` Michal Hocko
2013-03-20 7:03 ` Glauber Costa
[not found] ` <51495F35.9040302-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-20 8:03 ` Michal Hocko
2013-03-20 8:03 ` Michal Hocko
2013-03-20 8:08 ` Glauber Costa
[not found] ` <51496E71.5010707-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-20 8:18 ` Michal Hocko
2013-03-20 8:18 ` Michal Hocko
2013-03-20 8:34 ` Glauber Costa
2013-03-20 8:58 ` Michal Hocko
2013-03-20 9:30 ` Glauber Costa
[not found] ` <514981C3.8070304-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-21 6:08 ` Kamezawa Hiroyuki
2013-03-21 6:08 ` Kamezawa Hiroyuki
2013-03-20 16:40 ` Anton Vorontsov [this message]
2013-03-20 16:40 ` Anton Vorontsov
2013-03-20 7:04 ` Glauber Costa
2013-03-05 13:10 ` [PATCH v2 3/5] memcg: make it suck faster Glauber Costa
2013-03-05 13:10 ` Glauber Costa
[not found] ` <1362489058-3455-4-git-send-email-glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-06 0:46 ` Kamezawa Hiroyuki
2013-03-06 0:46 ` Kamezawa Hiroyuki
2013-03-06 8:38 ` Glauber Costa
[not found] ` <5137007E.7030004-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-06 10:54 ` Kamezawa Hiroyuki
2013-03-06 10:54 ` Kamezawa Hiroyuki
2013-03-13 8:08 ` Sha Zhengju
2013-03-13 8:08 ` Sha Zhengju
[not found] ` <CAFj3OHU6f3o5GmbFyUsqtSWqHruSS4Yyodx=s=Vh8mO7GfTE8w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-03-20 7:13 ` Glauber Costa
2013-03-20 7:13 ` Glauber Costa
2013-03-19 13:58 ` Michal Hocko
2013-03-19 13:58 ` Michal Hocko
2013-03-20 7:00 ` Glauber Costa
[not found] ` <51495E73.8090409-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-20 8:13 ` Michal Hocko
2013-03-20 8:13 ` Michal Hocko
2013-03-05 13:10 ` [PATCH v2 4/5] memcg: do not call page_cgroup_init at system_boot Glauber Costa
2013-03-05 13:10 ` Glauber Costa
[not found] ` <1362489058-3455-5-git-send-email-glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-06 1:07 ` Kamezawa Hiroyuki
2013-03-06 1:07 ` Kamezawa Hiroyuki
[not found] ` <513696C1.3090301-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2013-03-06 8:22 ` Glauber Costa
2013-03-06 8:22 ` Glauber Costa
2013-03-19 14:06 ` Michal Hocko
2013-03-05 13:10 ` [PATCH v2 5/5] memcg: do not walk all the way to the root for memcg Glauber Costa
2013-03-05 13:10 ` Glauber Costa
[not found] ` <1362489058-3455-6-git-send-email-glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2013-03-06 1:08 ` Kamezawa Hiroyuki
2013-03-06 1:08 ` Kamezawa Hiroyuki
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