There are newer/commercial databases that use that sort of microbenchmarking approach. My guess is that no one has implemented it for Postgres, or there's a for

There are newer/commercial databases that use that sort of microbenchmarking approach. My guess is that no one has implemented it for Postgres, or there's a fork that does it, or it's somehow pluggable. I'm not sure if there's been any discussion of it in the developer communications, but its worth a look.