On Tue, Dec 10, 2013 at 5:05 PM, John Melesky <john.mele...@rentrakmail.com>wrote:
> It seems clear that there were dead tuples, since the table size shrank to > an eighth of its previous size. Why did analyze not pick that up? > Am I missing something? > This is a very large database, so we want to introspect against live/dead > tuple percentage to minimize the tables we run a VACUUM FULL against. > If you willing to install the pgstattuple[1] extension, what does the output say? Note, there is some overhead on larger tables (disk I/O primarily) select * from pgstattuple('your table'); Also, check the output from bloat query at https://wiki.postgresql.org/wiki/Show_database_bloat [1] http://www.postgresql.org/docs/current/static/pgstattuple.html