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

From: Avi Kivity
Date: Thu Aug 06 2009 - 09:44:57 EST


On 08/06/2009 04:13 PM, Rik van Riel wrote:
Avi Kivity wrote:
On 08/06/2009 01:59 PM, Wu Fengguang wrote:

As a refinement, the static variable 'recent_all_referenced' could be
moved to struct zone or made a per-cpu variable.

Definitely this should be made part of the zone structure, consider the original report where the problem occurs in a 128MB zone (where we can expect many pages to have their referenced bit set).

The problem did not occur in a 128MB zone, but in a 128MB cgroup.

Putting it in the zone means that the cgroup, which may have
different behaviour from the rest of the zone, due to excessive
memory pressure inside the cgroup, does not get the right
statistics.


Well, it should be per inactive list, whether it's a zone or a cgroup. What's the name of this thing? ("inactive list"?)

error compiling committee.c: too many arguments to function

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