Research Article
Fuzzy control for guaranteeing absolute delays in Web servers
@INPROCEEDINGS{10.1109/QSHINE.2005.26, author={ Yaya Wei and Chuang Lin and T. Voigt and Fengyua Ren }, title={Fuzzy control for guaranteeing absolute delays in Web servers}, proceedings={2nd International ICST Conference on Quality of Service in Heterogeneous Wired/Wireless Networks}, publisher={IEEE}, proceedings_a={QSHINE}, year={2005}, month={12}, keywords={}, doi={10.1109/QSHINE.2005.26} }- Yaya Wei
Chuang Lin
T. Voigt
Fengyua Ren
Year: 2005
Fuzzy control for guaranteeing absolute delays in Web servers
QSHINE
IEEE
DOI: 10.1109/QSHINE.2005.26
Abstract
This paper presents a fuzzy control approach that guarantees absolute delays in Web servers. Previous work has proposed the use of classical PI controllers for delay guarantees. However, a disadvantage of the classical PI controller is that the system model, which is obtained by system identification, mismatches the real system and inevitably degrades the performance of the Web system. In contrast with classical PI controllers, fuzzy controllers are nonlinear and therefore independent of the accurate model of the plant, i.e. the controlled system. Hence, fuzzy controllers seem to be very suitable for Web servers. Our experiments show that fuzzy controllers indeed perform better than PI controllers presented in earlier papers