On Fri, Apr 16, 2010 at 11:59:38AM +0200, Szymon Guz wrote: > File pages are not fully filled from the start as that could result in bad > performance of queries later.
The manual page you linked to says something else: "The fillfactor for a table is a percentage between 10 and 100. 100 (complete packing) is the default."
However, the index has a default fill factor of 90, so I guess I can tweak that to 100 to shave off another few percent. (there will be no updates nor extra inserts on these tables)
Thanks for the tip! I hope there are more ways to tweak it, though because this doesn't save that much.
I thought that the default fillfactor was much smaller (and haven't checked that now)... sorry for messing that up.
But let's think of it from the other side: what do you want to do with that data? Maybe PostgreSQL with it's MVCC's overhead isn't the best solution for your needs.