Computer Science – Networking and Internet Architecture
Scientific paper
2007-05-03
Computer Science
Networking and Internet Architecture
Sophia Antipolis, France, 03 May 2007
Scientific paper
We study Batch Processor-Sharing (BPS) queuing model with hyper-exponential service time distribution and Poisson batch arrival process. One of the main goals to study BPS is the possibility of its application in size-based scheduling, which is used in differentiation between Short and Long flows in the Internet. In the case of hyper-exponential service time distribution we find an analytical expression of the expected conditional response time for the BPS queue. We show, that the expected conditional response time is a concave function of the service time. We apply the received results to the Two Level Processor-Sharing (TLPS) model with hyper-exponential service time distribution and find the expression of the expected response time for the TLPS model. TLPS scheduling discipline can be applied to size-based differentiation in TCP/IP networks and Web server request handling.
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