If you're currently waiting for a long-running vacuum (or autovacuum) to finish, go straight to the How to do it... section.
If you've just had a long-running vacuum complete, then you may want to think about setting a few parameters.
If you're currently waiting for a long-running vacuum (or autovacuum) to finish, go straight to the How to do it... section.
If you've just had a long-running vacuum complete, then you may want to think about setting a few parameters.
autovacuum_max_workers should always be set to more than 2. Setting it too high may not be very useful, and so you need to be careful.
Setting vacuum_cost_delay too high is counterproductive. VACUUM is your friend, not your enemy, so delaying it until it doesn't happen at all just makes things worse.
maintenance_work_mem should be set to anything up to 1 GB, according to how much memory you can allocate to this task at this time...