Hello. On Mon, Mar 20, 2023 at 03:06:48AM +0000, Cai Xinchen <caixinchen1@xxxxxxxxxx> wrote: > When memcg C is offllined, its pages are reparented to memcg P, > so far P->vmstats (hierarchical) have those pages, and > P->vmstats_percpu (non-hierarchical) don't. When those pages get > uncharged, P->vmstats (hierachical) decreases, which is correct, > but P->vmstats_percpu (non-hierarchical) also decreases, which > is wrong, as those stats were never added to P->vmstats_percpu to > begin with. I was wondering why ->vmstats_percpu matters (in the end all is summed in ->vmstats) -- do you mean this is a cgroup v1 only issue? As only that exposes the non-hieararchical stats. Thanks, Michal
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