A Lower Bound for Two-Server Balancing Algorithms
نویسنده
چکیده
We consider the class of balancing algorithms for two servers. Such algorithms have appeared in a number of the early papers on this problem; they are so named because they seek to \balance" the distance traveled evenly among the servers. In this paper, we show a universal lower bound on the competitive ratio of any balancing algorithm for two servers. The lower bound is equal to (5 + p 7)=2 (3:82), and consequently shows that no optimal on-line algorithm for two servers can be expressed as a balancing algorithm.
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عنوان ژورنال:
- Inf. Process. Lett.
دوره 52 شماره
صفحات -
تاریخ انتشار 1994