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

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