Hello Yun. On Fri, Jul 12, 2019 at 06:10:24PM +0800, 王贇 <yun.wang@xxxxxxxxxxxxxxxxx> wrote: > Forgive me but I have no idea on how to combined this > with memory cgroup's locality hierarchical update... > parent memory cgroup do not have influence on mems_allowed > to it's children, correct? I'd recommend to look at the v2 of the cpuset controller that implements the hierarchical behavior among configured memory node sets. (My comment would better fit to [PATCH 3/4] numa: introduce numa group per task group IIUC, you could use cpuset controller to constraint memory nodes.) For the second part (accessing numa statistics, i.e. this patch), I wonder wheter this information wouldn't be better presented under the cpuset controller too. HTH, Michal