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Proceedings Paper

Load balancing techniques for scalable web servers
Author(s): Haakon Bryhni; Espen Klovning; Oivind Kure
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Paper Abstract

Scalable web servers can be built using a Network of Workstations (NOW) where server capability can be added by adding new workstations as the workload increases. The task of load balancing Hyper Text Transfer Protocol traffic to scalable web servers is the topic of this paper. We present a classification framework for scalable web servers, and present simulations of a clustered web server. The cluster communication is modeled using a detailed, verified model of TCP/IP processing over Asynchronous Transfer Mode. The simulator is a trace driven discrete even simulator, and the traces are obtained from the proxy server of a large Internet Service Provider in Norway. Various load balancing schemes are simulated for Robin load balancing policy implemented in a modified router gives better average response time and better load balancing than the Rotating Nameserver method used in current scalable web servers.

Paper Details

Date Published: 7 October 1998
PDF: 14 pages
Proc. SPIE 3530, Performance and Control of Network Systems II, (7 October 1998); doi: 10.1117/12.325864
Show Author Affiliations
Haakon Bryhni, Univ. of Oslo (Norway)
Espen Klovning, Telenor Research and Development (Norway)
Oivind Kure, Telenor Research and Development (Norway)


Published in SPIE Proceedings Vol. 3530:
Performance and Control of Network Systems II
Wai Sum Lai; Robert B. Cooper, Editor(s)

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