Self-Paging in the Nemesis Operating System

Summary: Combines paging with QoS constraints by giving applications
control over paging.

Overview:

* Each appliation has a number of guaranteed frames, and a number of
  optimistic frames.
  - the sum of all guaranteed frames must be less than main memory
  - optimistic frames can be taken away under heavy load

* Each application maintains a list of frames ordered by importance;
  the paging system always takes away the least important page.

* All paging code is implemented in user-level libraries to avoid "QoS
  crosstalk" 

* Disk bandwidth is monitored by a complementary mechanism.


Comments:

* The use of guaranteed pages amounts to a form of admission control

* Obviously, this approach requires significant application involvement