Re: [PATCH 0/7] Per-cgroup page stat accounting

From: Sha Zhengju
Date: Mon Jul 02 2012 - 03:51:13 EST

On 06/29/2012 04:23 PM, Kamezawa Hiroyuki wrote:
> (2012/06/28 19:54), Sha Zhengju wrote:
>> This patch series provide the ability for each memory cgroup to have independent
>> dirty/writeback page stats. This can provide some information for per-cgroup direct
>> reclaim. Meanwhile, we add more detailed dump messages for memcg OOMs.
>> Three features are included in this patch series:
>> (0).prepare patches for page accounting
>> 1. memcg dirty page accounting
>> 2. memcg writeback page accounting
>> 3. memcg OOMs dump info
>> In (0) prepare patches, we have reworked vfs set page dirty routines to make "modify
>> page info" and "dirty page accouting" stay in one function as much as possible for
>> the sake of memcg bigger lock.
>> These patches are cooked based on Andrew's akpm tree.
> Thank you !, it seems good in general. I'll review in detail, later.
> Do you have any performance comparison between before/after the series ?
> I mean, set_page_dirty() is the hot-path and we should be careful to add a new accounting.

Not yet, I sent it out as soon as I worked out this solution to check
whether it's okay.
I can test the series after most of people agree with it.


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