> In your original post you said it was stopping on pg_class so now I am > confused. No need to be confused. The vacuum thing is a bit tricky for laymen like myself. The "pg_class" seemed to be associated to this table. Anyway, even before the upgrade, the vacuum was stopping at this table and taking forever. The question is: what now. Where can I give you information from? IOSTAT I've already shared. Will the work_mem settings affect the manual REINDEX that's still running? What can I do to speed up the REINDEX? Should I change my autovacuum settings for this table specifcally (it's the only mammoth table in the DB, and our main one)? Thanks.