Does Sudospawner support Spawner.mem_limit?

[radumas]

Per the JupyterHub documentation

c.Spawner.mem_limit: A limit specifies the maximum amount of memory that may be allocated, though there is no promise that the maximum amount will be available. In supported spawners, you can set c.Spawner.mem_limit to limit the total amount of memory that a single-user notebook server can allocate. Attempting to use more memory than this limit will cause errors. The single-user notebook server can discover its own memory limit by looking at the environment variable MEM_LIMIT, which is specified in absolute bytes.

In the configuration file, there is a caveat though:

This is a configuration setting. Your spawner must implement support for the limit to work. The default spawner, LocalProcessSpawner, does not implement this support.

So does SudoSpawner implement this? Can it?

[yuvipanda]

AFAICT, it does not.

Implementing it would require wrapping the spawned processes in something that does cgroups (like systemd or firejail), or using ulimits.

[yuvipanda]

There's already a systemd spawner, but it'll be great to have ulimit support built somewhere.

[radumas]

Thanks for the answer @yuvipanda, this is not my area of expertise, but would be willing to help contribute if pointed in the right direction.