Title :
Modeling user perceived unavailability due to long response times
Author :
Martinello, Magnos ; Kaâniche, Mohamed ; Kanoun, Karama ; Melchor, Carlos Aguilar
Author_Institution :
LAAS-CNRS, Toulouse
Abstract :
In this paper, we introduce a simple analytical modeling approach for computing service unavailability due to long response time, for infinite and finite single-server systems as well as for multi-server systems. Closed-form equations of system unavailability based on the conditional response time distributions are derived and sensitivity analyses are carried out to analyze the impact of long response time on service unavailability. The evaluation provides practical quantitative results that can help distributed system developers in design decisions
Keywords :
distributed processing; modelling; queueing theory; closed-form equations of system unavailability; computing service unavailability; conditional response time distributions; distributed system; finite single-server systems; infinite single-server systems; multiserver systems; user perceived unavailability; Analytical models; Availability; Delay; Equations; Mathematical model; Queueing analysis; Sensitivity analysis; Steady-state; Time factors; Time measurement;
Conference_Titel :
Parallel and Distributed Processing Symposium, 2006. IPDPS 2006. 20th International
Conference_Location :
Rhodes Island
Print_ISBN :
1-4244-0054-6
DOI :
10.1109/IPDPS.2006.1639671
