On 29th of June, Andres Freund committed patch: Add cluster_name GUC which is included in process titles if set. When running several postgres clusters on one OS instance it's often inconveniently hard to identify which "postgres" process belongs to which postgres instance. Add the cluster_name ...

On 6th of December, Alvaro Herrera committed patch: Background worker processes Background workers are postmaster subprocesses that run arbitrary user-specified code. They can request shared memory access as well as backend database connections; or they can just use plain libpq frontend database connections. Modules listed ...