April 17, 2017

Stimulus-based Sandbox for Learning Resource Dependencies in Virtualized Distributed Applications

  • Aghasaryan A.
  • Bouzid M.
  • Kostadinov D.

In this paper, we describe a profiling sandbox for cloud-based distributed applications where the dependencies on available computing resources can be methodically elucidated by dynamically applying a series of unitary perturbations on the underlying computing resources. Each such perturbation applied to an application node acts as a stimulus which propagates to performance meters of dependent nodes and reveals correlations and causal relations between the respective entities. The prime application of the sandbox is to learn the behavior of a distributed application under various resource insufficiency or fault conditions and to build dependency models for Quality of Service management and Root Cause Analysis.

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Recent Publications

May 22, 2017

Multidimensional Resource Allocation in NFV Cloud

  • Goldstein M.
  • Raz D.
  • Segall I.

Network Function Virtualization (NFV) is a new networking paradigm in which network functionality is implemented on top of virtual infrastructure deployed over COTS servers. One of the main motivations for the shift of telco operators into this paradigm is cost reduction, thus the efficient use of resources is an important ...

May 20, 2017

The Actual Cost of Software Switching for NFV Chaining

  • Caggiani Luizelli M.
  • Raz D.
  • Saar Y.
  • Yallouz J.

Network Function Virtualization (NFV) is a novel paradigm allowing flexible and scalable implementation of network services on cloud infrastructure. An important enabler for the NFV paradigm is software switching, which needs to satisfy rigid network requirements such as high throughput and low latency. Despite recent research activities in the field ...

May 08, 2017

Coexistence-aware dynamic channel allocation for 3.5 GHz shared spectrum systems

The paradigm of shared spectrum allows secondary devices to opportunistically access spectrum bands underutilized by primary owners. As the first step, the FCC targeted sharing the 3.5 GHz (3550–3700 MHz) federal spectrum with commercial systems. The proposed rules require a Spectrum Access System to implement a three-tiered spectrum management framework, ...