PostgreSQL
Performance Tuning
BRUCE MOMJIAN (Senior Database Architect in EnterpriseDB)
Source: http://momjian.us/main/presentations/overview.html
There is lot's of other interesting stuff also.
Copy on Google: https://docs.google.com/open?id=0B1Mh3B-dAA04NXcyOVZJSEtUZ0M0c0FFMkF0T0hKQQ
