Amortized efficiency of list update and paging rules
Communications of the ACM
Online computation and competitive analysis
Online computation and competitive analysis
Competitve buffer management for shared-memory switches
Proceedings of the thirteenth annual ACM symposium on Parallel algorithms and architectures
Competitive queueing policies for QoS switches
SODA '03 Proceedings of the fourteenth annual ACM-SIAM symposium on Discrete algorithms
Buffer Overflow Management in QoS Switches
SIAM Journal on Computing
Harmonic buffer management policy for shared memory switches
Theoretical Computer Science - Special issue: Online algorithms in memoriam, Steve Seiden
An optimal online algorithm for packet scheduling with agreeable deadlines
SODA '05 Proceedings of the sixteenth annual ACM-SIAM symposium on Discrete algorithms
Competitive queue policies for differentiated services
Journal of Algorithms
On the Performance of Greedy Algorithms in Packet Buffering
SIAM Journal on Computing
Lower and upper bounds on FIFO buffer management in QoS switches
ESA'06 Proceedings of the 14th conference on Annual European Symposium - Volume 14
Maximizing throughput in multi-queue switches
Algorithmica
Packet buffering: randomization beats deterministic algorithms
STACS'05 Proceedings of the 22nd annual conference on Theoretical Aspects of Computer Science
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The online buffer management problem formulates the problem of queueing policies of network switches supporting QoS (Quality of Service) guarantee. For this problem, several models are considered. In this paper, we focus on shared memory switches with preemption. We prove that the competitive ratio of the Longest Queue Drop (LQD) policy is 4M-4/3M-2 in the case of N = 2, where N is the number of output ports in a switch and M is the size of the buffer. This matches the lower bound given by Hahne, Kesselman and Mansour. Also, in the case of arbitrary N, we improve the competitive ratio of LQD from 2 to 2-1/M minK = 1, 2, ₀, N { ⌊M/K⌋ + K-1}.