[man8alexd]

cgroups have nothing to do with overcommit and memory allocation. They limit actual memory usage for a specific program or group of programs. If this program tries to use more memory than the cgroup memory limit, the program gets OOM killed.

[leononame]

Ok, got it, thanks. The wording in the comment I was responding to confused me and made me think it was possible to also change the overcommit behavior for a cgroup, not just the limits.