Markov Modulated Posson Process (MMPP) is a good model of Internet traffic. We take an IP trace and fit an MMPP to it using an algorithm recently published in a Journal. It is observed that trace generated using the MMPP model of the original trace has a distribution similar to the original trace. This is seen in the form of a linear quantile-quantile plot. Average queuing delay with data trace...

A queuing model is introduced for estimating container flow times through port terminals as a function of infrastructure, staffing, and import volume. The model is statistically calibrated on industry data. Flow-time estimates of the model are aggregated with estimates from models previously developed for rail networks to develop estimates of the total container flow times from West Coast ports...

In this paper we study the relations between multiclass BCMP-like service stations and generalized stochastic Petri nets (GSPN). Representing queuing discipline with GSPN models is not easy. We focus on representing multi-class queuing systems with different queuing disciplines by defining appropriate finite GSPN models. Note that queuing discipline in general affects performance measures in mu...

We consider queuing systems as models of distance learning system we analyze how characteristics of business process in the system affect on throughput and on learning outcomes. The processes of executing tasks and tasks validation process are the key processes in the distance learning. A model of the process performed by a student is a queuing system with refusals. A model of the process perfo...

Two common approaches for predicting the response times of distributed enterprise applications on new server architectures are solving queuing models and extrapolating from previously gathered performance data. The dynamic recalibration of a layered queuing model and a historical model is investigated experimentally using the IBM Websphere Performance Sample benchmark. It is found that these mo...

This paper studies and gives an analysis of a particular queuing model. It considers a non-preemptive priority queuing system with K ( ≥ 2 ) classes of jobs. The system consists of a single processor. It represents the model of discrete dynamic scheduling problems associated with M k / Gk / 1 / ∞ endogenous priority queues. The processor schedule jobs arriving according to a Markov arrival proc...

In real-time multimedia applications, the delivery of multimedia information over ad hoc wireless networks has presented difficult challenges requiring considerable research efforts to overcome. To analyze the delivering multimedia packets between mobile nodes with low end-to-end delay and less bandwidth overhead while ensuring high throughput, we propose a queuing network model based on our ad...