On Tue, 25 Jun 2024 01:53:06 +0800 Kairui Song <ryncsn@xxxxxxxxx> wrote: > Currently, every list_lru has a per-node lock that protects adding, > deletion, isolation, and reparenting of all list_lru_one instances > belonging to this list_lru on this node. This lock contention is heavy > when multiple cgroups modify the same list_lru. > > This can be alleviated by splitting the lock into per-cgroup scope. I'm wavering over this. We're at -rc5 and things generally feel a bit unstable at present. The performance numbers are nice for extreme workloads, but can you suggest how much benefit users will see in more typical workloads? Anyway, opinions are sought and I'd ask people to please review this work promptly if they feel is it sufficiently beneficial.
