The huge_pages parameter is try. How can I know the huge page is used for shared buffers?
Also, I would like to say one more thing. Some queries have high planning time of explain analyze output. However, I run vacuumdb analyze command every day. I am a little bit confused about this.
Agreed. The "perf top" output produced by Kenny definitely indicates that. That's precisely why I concentrated on JIT. Anything else would give us a slim chance of increasing the query speed.
When I come to think of it, are you using huge pages for shared buffers? Huge pages tend to decrease page tables and lessen the impact of paging.