Performance Study of a Distributed Web Server: An Analytical Approach

Abstract

With the rapid expansion of the Internet, Web servers have played a major role in accessing the enormous mass of Web pages to find the information needed by the user. Despite the exponential growth of the WWW, a very negligible amount of research has been conducted in Web server performance analysis with a view to improve the time a Web server takes to connect, receive, and analyze a request sent by the client and then sending the answer back to client. In this paper, we propose a multi-layer analytical approach to study the web server performance. A simple client-server model is used to represent the WWW server in order to demonstrate how to apply the proposed approach. We developed a systematic, analytical methodology to quantify the communication delay and queuing overhead in a distributed web server system. The approach uses the Computation Structure Model to derive server processing time required to process a request sent from a client and queueing model to analyze the communication between the clients and the server

The Brazilian Soil Spectral Service (BraSpecS): A User-Friendly System for Global Soil Spectra Communication

“…For the web server, a workstation was acquired with 2 XEON 5120T processor hardware, with 14 cores each, and a video card with 4000 GPU's, which are essential for the application of the predictive models. The web server was created using the Apache software [44] and PHP programming language [45,46]. Apache is an open-source Hypertext Transfer Protocol (HTTP) server project to provide a secure, efficient, and extensible web server on HTTP standards.…”