Re: [RFC] respect the referenced bit of KVM guest pages?

[Balbir Singh]

* Rik van Riel <riel@xxxxxxxxxx> [2009-08-15 23:56:39]:

> Wu Fengguang wrote:
>
>> Right, but I meant busty page allocations and accesses on them, which
>> can make a large continuous segment of referenced pages in LRU list,
>> say 50MB.  They may or may not be valuable as a whole, however a local
>> algorithm may keep the first 4MB and drop the remaining 46MB.
>
> I wonder if the problem is that we simply do not keep a large
> enough inactive list in Jeff's test.  If we do not, pages do
> not have a chance to be referenced again before the reclaim
> code comes in.
>
> The cgroup stats should show how many active anon and inactive
> anon pages there are in the cgroup.
>

Yes, we do show active and inactive anon pages in the mem cgroup
controller in the memory.stat file.


-- 
	Balbir
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