In my experience DB connections are overwhelmingly idle. Even if you omit the obvious dead times between requests and consider only actively executing connectio

In my experience DB connections are overwhelmingly idle. Even if you omit the obvious dead times between requests and consider only actively executing connections, a request will spend most of the time waiting for a resource or another (read IO, commit flush, latches, locks). It takes an extraordinarily well tuned app to be able to drive all connections to be anywhere near 100% CPU bound and never conflict or wait.