Heiko,
First, what does this have to do with pgPool?
> Filter: (create_time < ((((timenow())::integer - 3000))::abstime)::time
> stamp with time zone)
> Total runtime: 2019.371 ms
Looks like you don't have a usable index on create_time.
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com