Autopause++ (process hibernation or container management)

[Victoare]

Hi all.

I have a small home server with a couple minecraft worlds playing with my family. Most of the time they are just sitting there auto-paused, consuming 2G memory each. Wondering if it is technically possible to hibernate the server process as such windows hibernate its whole system, writing out the memory content to a file and read back when the server is waking up.
I know (if it would be possible) there would be a much greater startup delay, but would be more resource friendly (at least in my case).

Another way would be to automatically shut down / restart the container.
In my case I use mc_router as well and maybe that or a similar container could monitor each instance (and client connections) and start/stop the containers accordingly.

[itzg]

I think I was reading docker has or it will have a feature to suspend a container with its memory state to disk. It would be nice to have mc-router invoke an API on docker to manage that.

[Victoare]

Found this docker command: https://docs.docker.com/reference/cli/docker/checkpoint which will save the memory to disk and load back from there on startup. Although it is an experimental feature for now, but maybe worth a shot.