"Milen A. Radev" <milen@radev.net> writes:
> The same test programme has grown (after ~1 million iterations) from 2KB to
> around 40MB used physical memory (as reported by "top").
I couldn't duplicate any such leak using your test program here.
What authentication method is being selected by your pg_hba.conf
file, and what are your pg_config settings?
regards, tom lane