Virtualization Techniques in Network Emulation Systems

Distributed system emulators provide a paramount platform for testing of network protocols and distributed applications in clusters and networks of workstations. However, to allow testers to benefit from these systems, it is necessary an efficient and automatic mapping of hundreds, or even thousands, of virtual nodes to physical hosts-and the mapping of the virtual links between guests to physical paths in the physical environment. In this paper we present a heuristic to map both virtual machines to hosts and virtual links between virtual machines to paths in the real system. We define the problem we are addressing, present the solution for it and evaluate it in different usage scenarios.

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“…NEPTUNE [5] considers the same topology than V-DS. However, no specific solution is proposed for the mapping problem.…”

Section: Related Workmentioning

confidence: 99%

“…To overcome such limitations, several distributed system emulators built upon virtualization technology were proposed [1,[4][5][6]11]. These projects aim at delivering a scalable and controlled testbed where a tester can evaluate the behavior of the actual system.…”

Section: Introductionmentioning

confidence: 99%

A Heuristic for Mapping Virtual Machines and Links in Emulation Testbeds

Calheiros

Buyya

Rose

2009

2009 International Conference on Parallel Processing

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“…However, it does not support tools for running applications inside virtual machines. Other approaches, such as NEPTUNE [5] and V-eM [1] does not support automatic configuration of the environment, so this task is delegated to testers. TestGrid [7] relies on GridBuilder [6] to deploy the system.…”

Section: Related Workmentioning

confidence: 99%

“…To overcome such limitations of tests in real environments, several distributed system emulators built upon virtualization technology were proposed [1,4,5,7,9,12]. These projects aim at delivering a scalable and controlled testbed where a tester can evaluate the behavior of the actual system.…”

Section: Introductionmentioning

confidence: 99%

Towards self-managed adaptive emulation of grid environments

Calheiros

Alexandre

Carmo

et al. 2009

2009 IEEE Symposium on Computers and Communications

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Distributed systems emulators built with the aid of virtualization tools allow testing of systems in a testbed whose number of real elements are orders of magnitude smaller than the number of virtual elements being tested. However, to allow testers to benefit from these systems, operation of the virtual environment should be hidden from them and performed automatically by the emulator. Moreover, testers may be unsure on the exact needs of their environment, and thus can request an environment that does not fit the experiment. In this paper we present our achievements in providing an emulation framework able to provide environment reconfiguration if the requested one does not comply with experiment's demands. Also, it supplies services such as execution log, environment monitoring, and automatic management of applications running in the virtual environment.

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“…Several projects apply VMM to support emulation of grids and other distributed systems in a distributed environment, such as V-DS [18], V-eM [2], TestGrid [7], and NEP-TUNE [5]. However, all of them lack in offer either automatic mapping of guests in hosts with arbitrary topology or automatic building and execution of arbitrary experiments.…”

Section: Related Workmentioning

confidence: 99%

Applying Virtualization and System Management in a Cluster to Implement an Automated Emulation Testbed for Grid Applications

Calheiros

Storch

Alexandre

et al. 2008

2008 20th International Symposium on Computer Architecture and High Performance Computing

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Although grid systems have evolved in such a way that they are largely used both in industry and academy, techniques to test and evaluate them, such as simulation and emulation, have limitations on both their applicability and their reliability. We are investigating the utilization of paravirtualization techniques merged with systems management tools to build an automated emulation framework for grid experiments. This framework accesses standard network resources to manage communication among virtual nodes, allowing virtual machines to behave like a real grid environment. The development of this framework involves the mapping of virtual machines to physical hosts, automatic deployment and management of virtual machines, automatic configuration of virtual network and experiment control. In this paper, we address these issues and present results demonstrating the feasibility and advantages of our approach. * This work was developed in collaboration with HP Brazil R&D.

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Virtualization Techniques in Network Emulation Systems

Cited by 7 publications

References 4 publications

A Heuristic for Mapping Virtual Machines and Links in Emulation Testbeds

A Heuristic for Mapping Virtual Machines and Links in Emulation Testbeds

Towards self-managed adaptive emulation of grid environments

Applying Virtualization and System Management in a Cluster to Implement an Automated Emulation Testbed for Grid Applications

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