Description of problem: The auto vacuum scripts that have been implemented via the appliance console are causing the postgres wal sender process memory to balloon. This is happening every Saturday at 3:00am when the vacuum full tables is run. VACUUM FULL VERBOSE vim_performance_states; INFO: vacuuming "public.vim_performance_states" INFO: "vim_performance_states": found 0 removable, 74842405 nonremovable row versions in 5479519 pages DETAIL: 0 dead row versions cannot be removed yet. CPU 106.67s/114.74u sec elapsed 685.80 sec. VACUUM Time: 1631870.671 ms periodic vacuum full completed at Sat Feb 18 03:27:36 PST 2017 Top output of the wal process: 20890 postgres 20 0 13.561g 4.084g 6456 S 0.0 26.3 118:53.65 postgres Version-Release number of selected component (if applicable): 5.7.0.17 How reproducible: Always Steps to Reproduce: 1. Run "VACUUM FULL VERBOSE vim_performance_states;" on the vmdb 2. 3. Actual results: Expected results: Additional info: