I'm currently studying about Linux in general and what it is. I see that Linux is a high-performance operating system that breathes life to old hardware. Ubuntu is a distribution of Linux.
But I'm uncertain whether Ubuntu is an embedded system. Embedded systems execute applications without an overhead kernel, and Android is a prime example in the mobile world. Is Ubuntu an embedded system as well?
Whether it is or is not, how does this fact account for the high performance of the system?