Performance
The advantage of this algorithm is that the time to register a new resource reservation depends only on the calendar size (it does not depend on the total number of reservations).
Let "n" be the number of elementary periods in the calendar.
The maximal number of "top-nodes" for a given reservation is 2.log n.
- to check if an amount of resource is available during a specific period of time : O(log n)
- to reserve an amount of resource for a specific period of time : O(log n)
- to delete a previous reservation : O(log n)
- to move the calendar forward : O(log n + M.log n)
where M is the number of reservations that are active during the added calendar periods.
(M = 0 if reservations are not allowed after the end of the calendar.)
Read more about this topic: Top-nodes Algorithm
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