> Is there a way to detect where is memory hold ?
Look at postgis code. We constructed rtree_gist index over 1e9 rows (on 8.0 pgsql).
>
> Is there an index-specific memory context for use
> to early release memory blocks allocated during
> operations (didn't see any use of memory contexts
> in the contrib/rtree_gist) ?
8.1 pgsql has short lived memory context during index creation which resets
after every insert. 8.0 hasn't this feature, so user-defined function (GiST
interfface) should carefully clean memory.
--
Teodor Sigaev E-mail: teodor@sigaev.ru
WWW: http://www.sigaev.ru/