[PERFORM] 8.0.1 much slower than 7.4.2?

Hi, I have just upgraded our db from 7.4.2 to 8.0.1 and we are doing some testing. For some reason, we have discovered that our application performs much slower on 8.0.1. My initial reaction was to turn on log_min_duration_statement to see what's happening. However,

[PERFORM] What is the max number of database I can create in an instance of pgsql?

Hi, We want to create a database for each one of our departments, but we only want to have one instance of postgresql running. There are about 10-20 departments. I can easily use createdb to create these databases. However, what is the max number of database I can create before