The last time I checked docker was libcontainer and not running lxc any longer. Libcontaier lxc all use the same api calls to the kernel... so in effect your s

The last time I checked docker was libcontainer and not running lxc any longer. Libcontaier lxc all use the same api calls to the kernel... so in effect your still correct (mostly) They all have overhead, if you're starting to use their features... cgroups can have some very funny impacts on app performance more so if your running containers ontop of a linux install over a hypervisor vs nix on hardware.