Optimization of Open Queuing Networks with Batch Services

Modeling Short-Lived TCP Connections with Open Multiclass Queuing Networks

In this paper we develop an open multiclass queuing network model to describe the behavior of short-lived TCP connections sharing a common IP network for the transfer of TCP segments. The queuing network model is paired with a simple model of the IP network, and the two models are solved through an iterative procedure. The combined model needs as inputs only the primitive network parameters, an...

Project:  Batch Queuing System Arborescent  (BQS Arborescent) .

Queuing for Expert Services

We consider a monopolist expert offering a service with a ‘credence’ characteristic. A credence service is one where the customer cannot verify, even after a purchase, whether the amount of prescribed service was appropriate or not; examples include legal, medical or consultancy services and car repair. This creates an incentive for the expert to ‘induce service’, that is, to provide unnecessar...

Multi-Class Queuing Networks Models for Energy Optimization

The increase of energy consumption and the related costs in large data centers has stimulated new researches on techniques to optimize the power consumption of the servers. In this paper we focus on systems that should process a peak workload consisting of different classes of applications. The objective is to implement a policy of load control which allows an efficient use of the power deploye...

Metastability of Queuing Networks with Mobile Servers

We study symmetric queuing networks with moving servers and FIFO service discipline. The mean-field limit dynamics demonstrates unexpected behavior which we attribute to the metastability phenomenon. Large enough finite symmetric networks on regular graphs are proved to be transient for arbitrarily small inflow rates. However, the limiting non-linear Markov process possesses at least two statio...