Amortized efficiency of list update and paging rules
Communications of the ACM
A model for hierarchical memory
STOC '87 Proceedings of the nineteenth annual ACM symposium on Theory of computing
Competitive algorithms for server problems
Journal of Algorithms
Competitive algorithms for the weighted server problem
Theoretical Computer Science - Special issue on dynamic and on-line algorithms
Competitive algorithms for relaxed list update and multilevel caching
Journal of Algorithms
Trackless online algorithms for the server problem
Information Processing Letters - Special issue analytical theory of fuzzy control with applications
Limited bookmark randomized online algorithms for the paging problem
Information Processing Letters
Theoretical Computer Science - Special issue: Online algorithms in memoriam, Steve Seiden
Paging with connections: FIFO strikes again
Theoretical Computer Science
Hi-index | 5.23 |
We consider a generalized two-server problem on the uniform space in which servers have different costs. Previous work focused on the case where the ratio between these costs was very large. We give results for varying ratios. For ratios below 2.2, we present a best possible algorithm which is trackless. We present a general lower bound for trackless algorithms depending on the cost ratio, proving that our algorithm is the best possible trackless algorithm up to a constant factor for any cost ratio. The results are extended for the case where we have two sets of servers with different costs.