On Thu, Jun 08, 2006 at 06:03:23PM -0400, Alex Turner wrote: > I hope I'm reading this query wrong: > > trend=# select relname, relpages*8192/reltuples from pg_class where > reltuples>0 order by relpages desc limit 10; > relname | ?column? > -------------------------------+------------------ > property | 19935.4468376195 > result_entry_pkey | 1611.15654062026 > result_entry | 1417.71707157196 > person | 7107.41684585612 > property_feature_pkey | 98.7810833557521 > property_feature | 60.2035684051268 > person_name_i | 3358.93641334398 > property_price_i | 1978.89907374882 > property_mls_listing_number_i | 1923.61833274788 > property_spatial | 1784.73493686332 > (10 rows) > > If I have this query right in my head, this means that the average tuple in > the property relation is taking up 19k? and the average tuple in the > result_entry_pkey index is take 1.5k?! > > Is there a way I can get the database to coalesce free space? A vacuum > verbose shows that I have enough entries in the free space map...
A lazy vacuum won't reclaim empty space, only a VACUUM FULL will.
If that drops the size of the relations substantially, you'll probably want to REINDEX everything to reclaim lost space in the indexes as well. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
