Those are notes taken from the talk “PostgreSQL when it is not your job” by Christophe Pettus from PostgreSQL Experts Inc. at DjangoCon Europe 2012.
This article describes how to make a basic PostgreSQL configuration:
logging, memory, checkpoints, planner. Note: this article is mostly a transcript from the talk by Christophe Pettus: so send all the cookies to him. Thanks !
That's around 12 configuration options and you're done.