Lattice scheduler method for reducing the impact of covert-chann

Details Lattice scheduler method for reducing the impact of covert-chann Lattice scheduler method for reducing the impact of covert-chann

1990-05-04

1996-11-12

Amsbury, Wayne

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Patent

active

055749127

ABSTRACT:
A method for scheduling processes for execution in a computer system organizes the processes into run queues in accordance with the respective secrecy classes of the processes. A CPU time slot is assigned to each run queue. If all processes in a run queue give up the CPU before the expiration of the run queue's assigned time slot, the leftover time is given to a run queue whose secrecy class dominates that of the previous run queue. Covert-channel countermeasures are not taken in between two run queues if the secrecy class of the second run queue dominates the secrecy class of the first run queue.

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