> Free space map details
> ----------------------
>
> Accesses to the FSM could create contention problems if we're not careful.
Another quick thought for handling FSM contention problems. A backend could
give up waiting for access to the FSM after a short period of time, and just
append it's data to the end of the file the same way it's done now. Dunno
if that is feasable but it seemed like an idea to me.
Other than that, I would just like to say this will be a great improvement
for pgsql. Tom, you and several other on this list continue to impress the
hell out of me.