On Tue, Jan 16, 2018 at 3:04 PM Tom Lane <t...@sss.pgh.pa.us> wrote: > Daniel Farina <dan...@fdr.io> writes: > > I am looking at a database with a wide (~500G) divergence between the > total > > space expended by the database directory and the result of select > > sum(pg_relation_size(oid)) from pg_class;. > > Odd. > > > I located about 280G of apparent extra space by performing an anti-join > > between files on disk and files in the catalog via the > pg_class.relfilenode > > field. > > Umm ... are you accounting for catalogs that have zeroes in > pg_class.relfilenode? It's generally better to rely on the > pg_relation_filenode(oid) function than the raw column contents. >
Yeah, the catalogs are not considered here (oids < 10000). The oids in question are rather high. Let me re-run the antijoin with the function though.... Indeed, same result.
