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Abstract

A method for resource management in a real-time data processing system. Multiple tasks having potentially different resource data processing resource requirements are scheduled to run concurrently. A first subset of tasks are defined as reservation activities, each having specified parameters for determining priority among other reservation activities. Specified reservation activity parameters may include a resource consumption amount, execution time period, deadline, start time and/or reservation lifetime. The system also supports resource allocation among fixed-priority activities, such as may be legacy interrupt-driven or operating system tasks. The fixed-priority activities may themselves have fixed priorities with respect to other fixed priority activities. The fixed priority activities may themselves execute importantly at collective priority which is less than those allocated for at least one of the reservation activities. The co-existence of fixed-priority activities with reserves is also applicable to dynamic-priority activities. Finally, reservations can be created inside parent reservations.

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First Claim