I just have a couple of quick questions about 8.3 and Autovacuum.
1. When autovacuum chooses to vacuum a table, the entire table is vacuumed, and not just a specified percentage of the table. Correct?
2. There is no way, without turning autovacuum off, of excluding vacuum/analyze during a specific period of time (say during a known peak usage period).
3. If I have a PostgreSQL cluster with 10 databases, does autovacuum_max_workers=3 mean I have a possibility of 3 total workers or 30 workers (i.e. autovacuum_max_workers * number of db's)?