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Design and Application of Intelligent Control Schemes for the Performance Enhancement of a Web Server

Authors

  • Malik Loudini

    Ecole Nationale Superieure d'Informatique (ESI), Laboratoire de Communication dans les Systemes Informatiques (LCSI), B.P 68M, 16270 Oued Smar, El Harrach, Algiers, Algeria

  • Sawsen Rezig

    Ecole Nationale Superieure d'Informatique (ESI), Laboratoire de Communication dans les Systemes Informatiques (LCSI),B.P 68M, 16270 Oued Smar, El Harrach, Algiers, Algeria

  • Walid-Khaled Hidouci

    Ecole Nationale Superieure d'Informatique (ESI), Laboratoire de Communication dans les Systemes Informatiques (LCSI),B.P 68M, 16270 Oued Smar, El Harrach, Algiers, Algeria

  • Yahia Salhi

    Ecole Nationale Superieure d'Informatique (ESI), Laboratoire de Communication dans les Systemes Informatiques (LCSI),B.P 68M, 16270 Oued Smar, El Harrach, Algiers, Algeria

DOI:
https://doi.org/10.61416/ceai.v15i2.1923
Abstract
This paper considers the design problem of efficient feedback control schemes to enhance the quality of service (QoS) of a web server (WS) whose input/output dynamic behavior is modeled by discrete mathematical representations. Discrete models allowing the digital simulation of the WS responses to different scenarios of client requests are adopted. The capabilities to guarantee performing service delays, under dynamic workload variations, are the main investigations of this work. To try to provide prospective solutions, advanced feedback control strategies are proposed. First, a fuzzy logic controller (FLC) is implemented as a regulating solution in a closed-loop control architecture. Then, the tabu search (TS) algorithm (TSA) is used to optimize the FLC parameters with innovative tuning procedures. The TS optimized FLC (TSOFLC) is also implemented and applied to attempt to improve the WS QoS. To demonstrate the effectiveness of the adopted closed-loop intelligent control strategies, digital simulation experiments are carried out and examined.
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Published
2013-06-22
Issue
Vol. 15 No. 2 (2013)
Section
Articles