Vacuum operations on several tables are taking much longer than they previously were.We currently have 3 autovacuum processes that have been running more than 3 days each.
The tables are large (between 40 and 90GB each). Postgresql version is 8.3.1 maintenance_work_mem is 512MB (on a 32GB server). Any ideas what would make vacuum take so long? What can I do to speed things up? thanks, - Mason
