engleski

Implications of Web resource composite for Web server workload characteristics

This paper discusses the effects of serving different types of Web content for Web server workload. Two different Web servers have been studied: one serving “ classical” Web content, consisting mainly of Hypertext Markup Language (HTML) files and images (GIF, JPEG, etc), and the other serving a 3D virtual community environment mainly based on Virtual Reality Modeling Language (VRML) files. The workload parameters studied include: file size distribution, server response size, and concentration of references. The results obtained for prevalently HTML-based site demonstrate that both the file size distribution and the server response size distribution are heavy-tailed, which is consistent with results reported in literature. The results obtained for the VRML-based site show that the file size distribution is also heavy-tailed, while for the server response size this could not be established for the whole range of server response sizes due to a relatively small number of unique files. Both servers have been shown to exhibit a strong concentration of references, but with significant differences in terms of server transfer and disk storage.

World Wide Web; Web server workload; workload characterization; self-similarity; 3D virtual environment

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