>Does this mean that each run of autovacuum will vacuum/analyze all tables
>that need work in the database that autovacuum is looking at?
Yes, it will do all tables that satisfy the criteria.
>Also, with over 200 databases, does this mean that a database will only get
>checked once about every 3.5 hours, or does autovacuum run on the database
>that needs the vacuuming the most?
If, you have it set to 60 seconds, then yes. It hits one db each minute. Actually, to be more clear, it sleeps 1 minute between each check. So, if, on average, it takes 60 seconds to perform the necessary vacuum/analyzes, then it there will be, on average, 2 minutes between each db, or 400 minutes to get through all 200 dbs.
