An efficient method to maintain resource availability information for scheduling applications
نویسنده
چکیده
It is vital for a scheduler to efficiently determine when a resource is unassigned to some previously scheduled operation. Efficient algorithms are needed for calculating, querying, and updating this information. This paper presents an approach for using height-balanced trees for storing resource availablity information. We show that availibility queries are then efficient and that updates can be done in time logarithmic in the size of the availability information. Further, we present an algorithm for calculating the availability of sets of resources which is linear in the number of previously scheduled operations and show that this is optimal.
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