Virtual computers-a new paradigm for distributed operating systems

The virtual computers (VC) paradigm enables the incorporation of predictability and choice into the design of an operating system. Predictability refers to the ability of the system to provide each user with a computing environment whose performance is independent of the behavior of other users. Choice refers to the ability of a user to select a computer system that meets that user´s specifications, needs or budget. In this paper, we introduce this new paradigm and show how the VC paradigm can be incorporated into the processor scheduling, and how the on-line schedulers can be effectively implemented