At 2014-04-02 20:10:54 -0400, robertmh...@gmail.com wrote: > > I think it might underestimate free space relative to tuples because > the free space map isn't guaranteed to be completely correct. But I > guess you knew that already...
Yes, and tuple_len is already a slight overestimate (because it counts the line pointer array as live tuple space for skipped pages). But for the speedup it provides, I believe the result is still useful. I'll mention the potential for free-space inaccuracy in the README. -- Abhijit -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
