Hi guys, >>FWIW you still haven't explained how the upgrade was performed. That might be a very important piece of information, because the 9.4 cluster might have hint bits set and/or the data may be mostly frozen, but the >>9.6 cluster may not have that yet, resulting in higher CPU usage. We upgraded the database with a pg_dumpall from 8.4.22 and then a psql < BACKUP.SAV command! Thank you again! Francesco -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general