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On the Evaluation of x86 Web Servers Using Simics: Limitations and Trade-Offs

Summary: On the Evaluation of x86 Web Servers Using Simics:
Limitations and Trade-Offs
Francisco J. Villa, Manuel E. Acacio, and Jos´e M. Garc´ia
Universidad de Murcia, Departamento de Ingenier´ia y Tecnolog´ia de Computadores
30071 Murcia (Spain)
Abstract. In this paper, we present our first experiences using Simics, a simulator
which allows full-system simulation of multiprocessor architectures. We carry out
a detailed performance study of a static web content server, showing how changes
in some architectural parameters affect final performance. The results we have
obtained corroborate the intuition of increasing performance of a dual-processor
web server opposite to a single-processor one, and at the same time, allow us to
check out Simics limitations. Finally, we compare these results with those that are
obtained on real machines.
1 Introduction
Multiprocessor systems are increasingly being used for executing commercial applica-
tions, among which we can find web servers or On-Line Transaction Processing (OLTP)
applications. As a consequence of the use of multiprocessors in these fields, simulating
multiprocessor architectures running commercial applications accurately becomes im-
portant. Opposite to scientific applications, there are some characteristics of commercial


Source: Acacio, Manuel - Departamento de Ingenieria y Tecnologia de Computadores, Universidad de Murcia


Collections: Computer Technologies and Information Sciences