Dynamic capacity provisioning is a useful technique for handling the multi-time-scale
variations seen in Internet workloads. In this article, we propose a novel dynamic …

Performance models are used increasingly throughout the phases of the software
engineering lifecycle of distributed component-based systems. However, as systems grow in …

Since many Internet applications employ a multitier architecture, in this article, we focus on
the problem of analytically modeling the behavior of such applications. We present a model …

The adoption of virtualization and Cloud Computing technologies promises a number of
benefits such as increased flexibility, better energy efficiency and lower operating costs for IT …

The queueing Petri net (QPN) paradigm provides a number of benefits over conventional
modeling paradigms such as queueing networks and generalized stochastic Petri nets …

Nowadays, software systems have to fulfill increasingly stringent requirements for
performance and scalability. To ensure that a system meets its performance requirements …

The effort required to create performance models for enterprise applications is often out of
proportion compared to their benefits. This work aims to reduce this effort by introducing an …

In this article, we present techniques for provisioning CPU and network resources in shared
Internet hosting platforms running potentially antagonistic third-party applications. The …

In this paper, we define and study a new class of capacity planning models called MAP
queueing networks. MAP queueing networks provide the first analytical methodology to …

Assuring high quality of web services, especially regarding service reliability, performance
and availability of e-commerce systems (unified under the term performability), has turned …