Hi Tejun, We have couple of cgroup enhancement which we want to contribute to upstream cgroup2. But when seeking a usage module of cgroup2, I didn't find a workable APP for cgroup2, like a issue on lxc which failed to boot with "cgroup_no_v1=all" in cmdline (https://github.com/lxc/lxc/issues/2991) Which APP are you using to test cgroup2? or is there some recommend testcase/benchmark except the selftest in kernel tree? Sorry if it was answered. Thank Alex