Когда начнёте щупать 9.3, обратите внимание на новую опцию у pg_dump --jobs:
--jobs=njobs
Run the dump in parallel by dumping njobs tables simultaneously. This option reduces the time of the dump but it also increases the load on the database server. You can only use this option with the directory output format because this is the only output format where multiple processes can write their data at the same time.
