Hello, On Tue, Jul 12, 2022 at 08:25:24AM -0700, Shakeel Butt wrote: > Another very obvious example is the filesystem shared between multiple > jobs. We had a similar discussion [1] on LRU reparenting patch series. Hmm... if I'm understanding correctly, what's discussed in [1] can be solved with proper reparenting and nesting, right? > For this use-case internally we have a memcg= mount option where the > given memcg is the common ancestor (think of pod in k8s environment) > of the jobs who are sharing the filesystem. Can you elaborate a bit more on this? We've never really supported correctly accounting pages shared across cgroups because it can be very complicating and the use cases aren't that wide-spread. What's being shared? How big is the shared portion in relation to total memory usage? What's the cgroup topology like? Thanks. -- tejun
