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Evaluating the impacts of dynamic reconfiguration on the QoS of running systems

journal contribution
posted on 06.12.2017, 00:00 authored by Wei LiWei Li
A major challenge in dynamic reconfiguration of a running system is to understand in advance the impact on the system's Quality of Service (QoS). For some systems, any unexpected change to QoS is unacceptable. In others, the possibility of dissatisfaction increases due to the impaired performance of the running system or unpredictable errors in the resulting system. In general it is difficult to choose a reasonable reconfiguration approach to satisfy a particular domain application. Our investigation on this issue for dynamic approaches is four-fold. First, we define a set of QoS characteristics to identify the evaluation criteria. Second, we design a set of abstract reconfiguration strategies bringing existing and new approaches into a unified evaluation context. Third, we design a reconfiguration benchmark to expose a rich set of QoS problems. Finally, we test the reconfiguration strategies against the benchmark and evaluate the test results. The analysis of acquired results helps to understand dynamic reconfiguration approaches in terms of their impact on the QoS of running systems and possible enhancements for newer QoS capability.

History

Volume

84

Issue

12

Start Page

2123

End Page

2138

Number of Pages

16

ISSN

0164-1212

Location

Netherlands

Publisher

Elsevier

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Faculty of Arts, Business, Informatics and Education; Not affiliated to a Research Institute;

Era Eligible

Yes

Journal

Journal of systems and software.