Seems like a great place to look.
I installed via Ansible, so the config doesn't include the pool_size by default.
I can see that the default value is 5
I'll go straight ahead and fiddle with this, but do you (or anyone else) have any recommendations, based on how postgres is working and memory/cpu loads?
(I'm not about to bump it to 100, but maybe someone has already found the "natural limit")
Allright, so this is isn't the parameter that'll speed things up by itself.
I set it to 10 (a bit more cautious than you, but this is somewhat new ground for me) and didn't record more req/s, but it feels like the instance is a bit slower in terms of loading times. After I have tucked the kids in tonight I'll snoop around netdata (where I'm monitoring the servers) to see what (or if something) has changed.