Re: [RFC PATCH 0/4] memcg: revisit soft_limit reclaim on contention

[Ying Han <yinghan@google.com>]

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On Thu, May 12, 2011 at 5:40 PM, Rik van Riel <riel@redhat.com> wrote:

> On 05/12/2011 02:47 PM, Ying Han wrote:
>
>  TODO:
>> a) there was a question on how to do zone balancing w/o global LRU. This
>> could be
>> solved by building another cgroup list per-zone, where we also link
>> cgroups under
>> their soft_limit. We won't scan the list unless the first list being
>> exhausted and
>> the free pages is still under the high_wmark.
>>
>
>  b). one of the tricky part is to calculate the target nr_to_scan for each
>> cgroup,
>> especially combining the current heuristics with soft_limit exceeds. it
>> depends how
>> much weight we need to put on the second. One way is to make the ratio to
>> be user
>> configurable.
>>
>
> Johannes addresses these in his patch series.


That would be great, I am reading through his patch and apparently not
getting there yet :)

>
>
>  Ying Han (4):
>>   Disable "organizing cgroups over soft limit in a RB-Tree"
>>   Organize memcgs over soft limit in round-robin.
>>   Implementation of soft_limit reclaim in round-robin.
>>   Add some debugging stats
>>
>
> Looks like you also have some things Johannes doesn't have.
>
> It may be good for the two patch series you have to get
> merged into one series, before stuff gets merged upstream.
>
> Yes, that is my motivation here to post the patch here :)

--Ying

> --
> All rights reversed
>

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