Message-ID: <4FC4F42D.6060601@parallels.com>
Date: Tue, 29 May 2012 20:07:09 +0400
From: Glauber Costa <glommer@parallels.com>
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To: Christoph Lameter <cl@linux.com>
CC: <linux-kernel@vger.kernel.org>, <cgroups@vger.kernel.org>,
        <linux-mm@kvack.org>, <kamezawa.hiroyu@jp.fujitsu.com>,
        Tejun Heo <tj@kernel.org>, Li Zefan <lizefan@huawei.com>,
        Greg Thelen <gthelen@google.com>,
        Suleiman Souhlal <suleiman@google.com>, Michal Hocko <mhocko@suse.cz>,
        Johannes Weiner <hannes@cmpxchg.org>, <devel@openvz.org>,
        David Rientjes <rientjes@google.com>,
        Pekka Enberg <penberg@cs.helsinki.fi>
Subject: Re: [PATCH v3 19/28] slab: per-memcg accounting of slab caches
References: <1337951028-3427-1-git-send-email-glommer@parallels.com> <1337951028-3427-20-git-send-email-glommer@parallels.com> <alpine.DEB.2.00.1205290951520.4666@router.home>
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On 05/29/2012 06:52 PM, Christoph Lameter wrote:
> On Fri, 25 May 2012, Glauber Costa wrote:
>
>> >  This patch charges allocation of a slab object to a particular
>> >  memcg.
> Ok so a requirement is to support tracking of individual slab
> objects to cgroups? That is going to be quite expensive since it will
> touch the hotpaths.
>

No, we track pages. But all the objects in the page belong to the same 
cgroup.


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