The sarcastic irony is, Solaris engineers implemented a fully functional systemd(8) long before systemd(8) by designing and implementing SMF, which went on to break world records with startup and shutdown speed, on what is now an ancient AMD Opteron system (I think it was either v20z or a v40z). I wanted to include the reference to the slashdot's then-article, but try as I might, I can't find it any more.