On Sat, Oct 6, 2018 at 7:47 AM John Naylor <jcnay...@gmail.com> wrote: > A while back, Robert Haas noticed that the space taken up by very > small tables is dominated by the FSM [1]. Tom suggested that we could > prevent creation of the FSM until the heap has reached a certain > threshold size [2]. Attached is a WIP patch to implement that. I've > also attached a SQL script to demonstrate the change in behavior for > various scenarios.
Hi John, You'll need to tweak the test in contrib/pageinspect/sql/page.sql, because it's currently asserting that there is an FSM on a small table so make check-world fails. -- Thomas Munro http://www.enterprisedb.com
