Execution and Resource Management in QoS-Aware Virtualized Infrastructures

Execution and Resource Management in QoS-Aware Virtualized Infrastructures

Dominik Lamp (University of Stuttgart, Germany), Sören Berger (University of Stuttgart, Germany), Manuel Stein (Alcatel-Lucent Bell Labs, Germany), Thomas Voith (Alcatel-Lucent Bell Labs, Germany), Tommaso Cucinotta (Scuola Superiore Sant’Anna, Italy) and Marko Bertogna (Scuola Superiore Sant’Anna, Italy)
Copyright: © 2012 |Pages: 18
DOI: 10.4018/978-1-60960-827-9.ch011
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Abstract

Both real-time systems and virtualization have been important research topics for quite some time now. Having competing goals, research on the correlation of these topics has started only recently. This chapter overviews recent results in the research literature on virtualized large-scale systems and soft real-time systems. These concepts constitute the fundamental background over which the execution environment of any large-scale service-oriented real-time architecture for highly interactive, distributed, and virtualized applications will be built in the future. While many aspects covered in this chapter have already been adopted in commercial products, others are still under intensive investigation in research labs all over the world.
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Real-Time Scheduling

Real-time theory and methodologies are gaining applicability in the field of soft real-time systems. In this domain, applications possess precise timing and performance requirements, but occasional failures in meeting them may be easily tolerated by the system, causing a graceful degradation in the quality of the provided service.

The real-time literature on soft real-time technologies for General purpose operating systems (GPOSes) is growing, and the major research branches are those in relation to: multiprocessor scheduling, soft real-time scheduling, QoS control in distributed real-time applications and adaptive QoS control, as detailed below.

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