You missed the whole section where he compared unikernals on Xen vs. Linux (or Solaris) on metal. Unikernals have to run on Xen so either way, the best you're g

You missed the whole section where he compared unikernals on Xen vs. Linux (or Solaris) on metal. Unikernals have to run on Xen so either way, the best you're going to do is have one-level of abstraction (OS or Hypervisor) between you and your application.