[jcrawfordor]

GitLab should run fine on a machine with 4GB memory - this is the smallest recommended memory allocation, spec'd for up to 500 users. 2GB tends to work okay for testing but 1GB is indeed probably too small for all of the services to start. Postgres actually tends to be the long pole in the tent on small systems.

[deng]

Sorry, but the recommended system requirements are an absolute joke. They might be OK if you really only do pure code hosting and don't use CI, container/package registries, project planning features and whatnot, but on our instance with 400 users, the sidekiq background jobs alone easily eat 12GB RAM (I had to extend sidekiq to 4 processes just to deal with the load, otherwise GitLab would become unresponsive).