On 02/03/2011 10:54 AM, Oleg Bartunov wrote: > Mark, > > you could try gevel module to get structure of GIST index and look if > items distributed more or less homogenous (see different levels). You > can visualize index like http://www.sai.msu.su/~megera/wiki/Rtree_Index > Also, if your searches are neighbourhood searches, them you could try > knn, available > in 9.1 development version. Oleg, Those are interesting details to consider. I read more about KNN here: http://www.depesz.com/index.php/2010/12/11/waiting-for-9-1-knngist/ Will I be able to use it improve the performance of finding nearby zipcodes? It sounds like KNN has great potential for performance improvements! Mark -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
