On 2023/10/3 15:50, Michal Hocko wrote: > On Thu 28-09-23 11:03:23, Haifeng Xu wrote: > [...] >>>> for example, we want to run processes in the group but those parametes related to >>>> memory allocation is hard to decide, so use the notifications to inform us that we >>>> need to adjust the paramters automatically and we don't need to create the new processes >>>> manually. >>> >>> I do understand that but OOM is just way too late to tune anything >>> upon. Cgroup v2 has a notion of high limit which can throttle memory >>> allocations way before the hard limit is set and this along with PSI >>> metrics could give you a much better insight on the memory pressure >>> in a memcg. >>> >> >> Thank you for your suggestion. We will try to use memory.high instead. > > OK, is the patch still required? Yes As I've said I am not strongly opposed, > it is just that the justification is rather weak. >
