> The truth is usually there are tradeoffs and the defaults fit a broad general case. Part of the problem is that reasonable defaults for performance is a some

> The truth is usually there are tradeoffs and the defaults fit a broad general case. Part of the problem is that reasonable defaults for performance is a somewhat new phenomenon. It used to be that the defaults for Linux kernel settings, Apache, MySQL, etc... were terrible for production use. So there's a lot of history that "you have to change them" burned into people minds, documents, etc.