Hi, Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> wrote: > > > I think I must support dirty-ratio in memcg layer. But not yet. > > > > We need to add this to the TODO list. > > > OR...I'll add a bufferred-write-cgroup to track bufferred writebacks. > > And add a control knob as > > bufferred_write.nr_dirty_thresh > > to limit the number of dirty pages generetad via a cgroup. > > > > Because memcg just records a owner of pages but not records who makes them > > dirty, this may be better. Maybe I can reuse page_cgroup and Ryo's blockio > > cgroup code. > > Very good point, this is crucial for shared pages. > > > > > But I'm not sure how I should treat I/Os generated out by kswapd. > > > > Account them to process 0 :) How about accounting them to processes who make pages dirty? I think that a process which consumes more memory should get penalty. However, this allows a page request process to use other's bandwidth, but If a user doesn't want to swap-out the memory, the user should allocate enough memory for the process by using memcg in advance. Thanks, Ryo Tsuruta -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
