Messages in this thread | | | Date | Tue, 18 Dec 2012 09:56:21 +0000 | From | Mel Gorman <> | Subject | Re: [patch 1/7] mm: memcg: only evict file pages when we have plenty |
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On Mon, Dec 17, 2012 at 01:12:31PM -0500, Johannes Weiner wrote: > e986850 "mm, vmscan: only evict file pages when we have plenty" makes > a point of not going for anonymous memory while there is still enough > inactive cache around. > > The check was added only for global reclaim, but it is just as useful > to reduce swapping in memory cgroup reclaim: > > 200M-memcg-defconfig-j2 > > vanilla patched > Real time 454.06 ( +0.00%) 453.71 ( -0.08%) > User time 668.57 ( +0.00%) 668.73 ( +0.02%) > System time 128.92 ( +0.00%) 129.53 ( +0.46%) > Swap in 1246.80 ( +0.00%) 814.40 ( -34.65%) > Swap out 1198.90 ( +0.00%) 827.00 ( -30.99%) > Pages allocated 16431288.10 ( +0.00%) 16434035.30 ( +0.02%) > Major faults 681.50 ( +0.00%) 593.70 ( -12.86%) > THP faults 237.20 ( +0.00%) 242.40 ( +2.18%) > THP collapse 241.20 ( +0.00%) 248.50 ( +3.01%) > THP splits 157.30 ( +0.00%) 161.40 ( +2.59%) > > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> > Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Mel Gorman <mgorman@suse.de>
-- Mel Gorman SUSE Labs
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