> I can hardly imagine that the backend started working with 9mb of
> memory. what did you do that PostgreSQL needed so much memory from the
> beginning??? are you using the default settings? usually the postmaster
> does not need more than 3mb at startup (in this scenario).
On FreeBSD, every one of my backends appears to occupy 20MB. That's because
the SHM is added to _each_ process.
Chris