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Date: Fri, 2 Dec 2011 19:06:22 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: [RFC][PATCH] memcg: remove PCG_ACCT_LRU.
Message-Id: <20111202190622.8e0488d6.kamezawa.hiroyu@jp.fujitsu.com>
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To: "hannes@cmpxchg.org" <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>, Balbir Singh <bsingharora@gmail.com>, "linux-mm@kvack.org" <linux-mm@kvack.org>, cgroups@vger.kernel.org

I'm now testing this patch, removing PCG_ACCT_LRU, onto mmotm.
How do you think ?

Here is a performance score at running page fault test.
==
[Before]
    11.20%   malloc  [kernel.kallsyms]  [k] clear_page_c
    ....
     1.80%   malloc  [kernel.kallsyms]  [k] __mem_cgroup_commit_charge
     0.94%   malloc  [kernel.kallsyms]  [k] mem_cgroup_lru_add_list
     0.87%   malloc  [kernel.kallsyms]  [k] mem_cgroup_lru_del_list

[After]
    11.66%   malloc  [kernel.kallsyms]  [k] clear_page_c
    2.17%   malloc  [kernel.kallsyms]  [k] __mem_cgroup_commit_charge
    0.56%   malloc  [kernel.kallsyms]  [k] mem_cgroup_lru_add_list
    0.25%   malloc  [kernel.kallsyms]  [k] mem_cgroup_lru_del_list

==

seems attractive to me.

==