Peter,
> This is normal. Postgres is said to have a multi-process architecture > (which is often contrasted with a multi threaded architecture). The > number of processes isn't very predictable. > > you are right, it is normal. But the number of processes is quite predictable: on default PostgreSQL starts up with 5 processes: one background-writer one postmaster who masters the startup of additional progresses one autovacuum-daemon two processes which I have not leveled up enough to know what they are doing And then there is one additional process for every client connection. Harald -- GHUM GmbH Harald Armin Massa Spielberger Straße 49 70435 Stuttgart 0173/9409607 Amtsgericht Stuttgart, HRB 734971 - persuadere. et programmare