from 7.1 release notes:
> Store tables as files named by OID (Vadim)
until i upgraded to 7.1(.3), i used to track table sizes simply with ls
-l. is there a simple way to see how much space a table takes on disk,
short of
select 'ln -s ' || oid || ' ' || relname from pg_class
where relname not like 'pg%';
ari.