Why do you say that lxc (and cgroups) are less powerful than FreeBSD jails? From what I read in https://wiki.freebsd.org/Jails https://wiki.freebsd.org/Jails,

Why do you say that lxc (and cgroups) are less powerful than FreeBSD jails? From what I read in https://wiki.freebsd.org/Jails https://wiki.freebsd.org/Jails, jails don't yet have support for: * separate PID space * IO isolation cgroups provide extremely fine grained isolation, including among other things: * per-container OOM handler (userspace) * per-container swap * per-container disk I/O scheduling * per-container memory reclaim * per-container dirty page (write throttling) limit. These are very important features if you want to increase your utilization by mixing workload on shared machines.