> The hierarchical nature of memcg makes that a bit complicated. We have > something similar for memcg stats which is rstat infra where the stats are > saved per-memcg per-cpu and get accumulated hierarchically every 2 > seconds. This works fine for stats but for limits there would be a need for > some additional restrictions. > > Also sometime ago Andrew asked me to explore replacing the atomic counter > in page_counter with percpu_counter. Intuition is that most of the time the > usage is not hitting the limit, so we can use __percpu_counter_compare for > enforcement. > > Let me spend some time to explore per-memcg per-cpu cache or if > percpu_counter would be better. Greetings Shakeel, Hope this message finds you well. I want to inquiry about the current status of the fixing. Have you completed the evaluation and started working on the final solution? > > For now, this patch is more like an RFC.
