About "Cost-based Vacuum Delay"

Hi Guys,

I have some questions about "cost-based vacuum delay".

Q1. How can I know/check if the autovacuum is actually paused periodically
according to autovacuum_vacuum_cost_limit and autovacuum_vacuum_cost_delay?

I cannot find such an information from log files.

Q2. Is there any way to manually pause a running vacuum process?

If so, is there also any way to manually resume the paused vacuum process?


Best,
Ilyeop Yi.