> This fear is overplayed, I think. It can be difficult to separate the effects on the system from the loader and the server. I think if it's overplayed it's b

> This fear is overplayed, I think. It can be difficult to separate the effects on the system from the loader and the server. I think if it's overplayed it's because it's trying to convince people to not make it hard. Even doing them both on the same box is valuable, though. Functional tests aren't going to catch concurrency issues but load testing however you want to do it just might.