[Devel] Re: [RFC PATCH 0/5] memcg: VM overcommit accounting and handling

[Balbir Singh]

KAMEZAWA Hiroyuki wrote:
> On Tue, 10 Jun 2008 01:32:58 +0200
> Andrea Righi <righi.andrea at gmail.com> wrote:
> 
>> Provide distinct cgroup VM overcommit accounting and handling using the memory
>> resource controller.
>>
> 
> Could you explain the benefits of this even when we have memrlimit controller ?
> (If unsure, see 2.6.26-rc5-mm1 and search memrlimit controller.)
> 
> And this kind of virtual-address-handling things should be implemented on
> memrlimit controller (means not on memory-resource-controller.).
> It seems this patch doesn't need to handle page_group.
> 
> Considering hierarchy, putting several kinds of features on one controller is
> not good, I think. Balbir, how do you think ?
> 

I would tend to agree. With the memrlimit controller, can't we do this in user
space now? Figure out the overcommit value and based on that setup the memrlimit?


-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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