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SubjectRe: [rfc patch 3/6] mm: memcg-aware global reclaim
On Thu 12-05-11 16:53:55, Johannes Weiner wrote:
> A page charged to a memcg is linked to a lru list specific to that
> memcg. At the same time, traditional global reclaim is obvlivious to
> memcgs, and all the pages are also linked to a global per-zone list.
> This patch changes traditional global reclaim to iterate over all
> existing memcgs, so that it no longer relies on the global list being
> present.

At LSF we have discussed that we should keep a list of over-(soft)limit
cgroups in a list which would be the first target for reclaiming (in
round-robin fashion). If we are note able to reclaim enough from those
(the list becomes empty) we should fallback to the all groups reclaim
(what you did in this patchset).

Michal Hocko
Lihovarska 1060/12
190 00 Praha 9
Czech Republic

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