EDIT: Misread
Also, better kernel polling, DTrace, better schedulers, integrated OS, ZFS, Jails. Those are options you don’t find in the GNU/Linux world. The network stack is faster and more reliable (as others have pointed out).
I run FreeBSD on my laptop, on my workstation and on my deploy servers. We run FreeBSD at work in production and we deploy Elixir and Erlang applications with a breeze. We are now moving forward to containers using http://www.tredly.com/
