Matt,
> It should be fastest because it is the least overhead, and safe because
> postgres does it's own write-order guaranteeing through fsync(). You
> should also mount the FS with the 'noatime' option.
This, of course, assumes that PostgreSQL is the only thing on the partition.
Which is a good idea in general, but not to be taken for granted ...
--
Josh Berkus
Aglio Database Solutions
San Francisco