On Wed, Mar 19, 2025 at 1:06 PM Siraj G <tosira...@gmail.com> wrote:
> Hello! > > I have a PG (v16) instance which is occupying around 1TB of storage. Out > of this, around 350GB is occupied by the table pg_catalog.pg_attribute. > Why is the catalog table's size so big? > > Here are the sizes: > > pg_attribute > 338 GB > pg_attribute_relid_attnam_index > 117 GB > pg_attribute_relid_attnum_index > 69 GB > > I think this table must have tons of dead tuples. Please suggest to me if > we can purge any data/shrink the size of this table. > > Run pgstattuple and pgstatindex on them. They'll tell you how much bloat you have. And tune your autovacuum parameters to be more aggressive. These, for example, are my settings: autovacuum_analyze_scale_factor = 0.015 autovacuum_vacuum_scale_factor = 0.015 autovacuum_vacuum_insert_scale_factor = 0.015 autovacuum_vacuum_insert_threshold = 250 -- Death to <Redacted>, and butter sauce. Don't boil me, I'm still alive. <Redacted> lobster!
