[ADMIN] Question about maintenance_work_mem and shared_buffer

[Rodrigo Barboza]

Hi, everyone.
I have a doubt.
I have a 32-bit postrgesql running with 2.5gb of shared_buffer.
And I have maintenance_work_mem = 1gb and autovacuum_max_workers = 3.
How maintenance_work_mem is related to shared_buffer?
If the 3 workers uses 1gb, will the database crash?
Or their memory usage are separated from each other?