Robert Haas <robertmhaas(at)gmail(dot)com> writes: > Yikes! A table with 4 bytes of useful data is consuming 40kB on disk > - 8kB in the main form, 8kB in the VM fork, and 24kB in the FSM fork. > Ouch!
Yeah, ouch. Why is the FSM fork eating so much space --- I'd have expected 8k there, but 24?
Also, if VACUUM is going to cause the FSM to be created anyway, there may not be a lot of point to refraining from creating the first page right away.