Interactivity-Constrained Server Provisioning in Large-Scale Distributed Virtual Environments
2012 (English)In: IEEE Transactions on Parallel and Distributed Systems, ISSN 1045-9219, E-ISSN 1558-2183, Vol. 23, no 2, 304-312 p.Article in journal (Refereed) Published
Maintaining interactivity is one of the key challenges in distributed virtual environments (DVEs). In this paper, we consider a new problem, termed the interactivity-constrained server provisioning problem, whose goal is to minimize the number of distributed servers needed to achieve a prespecified level of interactivity. We identify and formulate two variants of this new problem and show that they are both NP-hard via reductions to the set covering problem. We then propose several computationally efficient approximation algorithms for solving the problem. The main algorithms exploit dependencies among distributed servers to make provisioning decisions. We conduct extensive experiments to evaluate the performance of the proposed algorithms. Specifically, we use both static Internet latency data available from prior measurements and topology generators, as well as the most recent, dynamic latency data collected via our own large-scale deployment of a DVE performance monitoring system over PlanetLab. The results show that the newly proposed algorithms that take into account interserver dependencies significantly outperform the well-established set covering algorithm for both problem variants.
Place, publisher, year, edition, pages
2012. Vol. 23, no 2, 304-312 p.
Distributed virtual environments, server provisioning, interactivity
IdentifiersURN: urn:nbn:se:kth:diva-63231DOI: 10.1109/TPDS.2011.107ISI: 000298381100013ScopusID: 2-s2.0-84855357086OAI: oai:DiVA.org:kth-63231DiVA: diva2:484920
QC 201201272012-01-272012-01-232014-01-27Bibliographically approved