On Tue, Jul 17, 2018 at 6:25 AM, Michal Hocko <mhocko@xxxxxxxxxx> wrote: > Yes this is really unfortunate. One thing that could help would be to > consider a trashing level during the reclaim (get_scan_count) to simply > forget about LRUs which are constantly refaulting pages back. We already > have the infrastructure for that. We just need to plumb it in. Can you go into a bit more detail about that infrastructure and how we might detect which pages are being constantly refaulted? I'm interested in spending a few hours on this topic to see if I can come up with anything. Thanks Daniel