> Thing is, not sure I use cgroups either, unless it is on by default. o_O
Cgroups (control groups) are a kernel feature, SystemD just provides a convenient interface for them if you're using it. They form the basis of containerisation iirc.
Bit of info on Wikipedia: https://en.m.wikipedia.org/wiki/Cgroups
You certainly can do all of the cgroups things while running OpenRC (even if it's not using OpenRC to do any of it) I'm just not familiar with how you accomplish that. There's some info on the wiki, but it's not specific to what you're doing, still maybe you can look into that to create a memory limit group without having to manually touch `/sys/fs/cgroup`.
Good luck!
