3,488 research outputs found
Limits To Certainty in QoS Pricing and Bandwidth
Advanced services require more reliable bandwidth than currently provided by
the Internet Protocol, even with the reliability enhancements provided by TCP.
More reliable bandwidth will be provided through QoS (quality of service), as
currently discussed widely. Yet QoS has some implications beyond providing
ubiquitous access to advance Internet service, which are of interest from a
policy perspective. In particular, what are the implications for price of
Internet services? Further, how will these changes impact demand and universal
service for the Internet. This paper explores the relationship between
certainty of bandwidth and certainty of price for Internet services over a
statistically shared network and finds that these are mutually exclusive goals.Comment: 29th TPRC Conference, 200
Dynamic Resource Management in Clouds: A Probabilistic Approach
Dynamic resource management has become an active area of research in the
Cloud Computing paradigm. Cost of resources varies significantly depending on
configuration for using them. Hence efficient management of resources is of
prime interest to both Cloud Providers and Cloud Users. In this work we suggest
a probabilistic resource provisioning approach that can be exploited as the
input of a dynamic resource management scheme. Using a Video on Demand use case
to justify our claims, we propose an analytical model inspired from standard
models developed for epidemiology spreading, to represent sudden and intense
workload variations. We show that the resulting model verifies a Large
Deviation Principle that statistically characterizes extreme rare events, such
as the ones produced by "buzz/flash crowd effects" that may cause workload
overflow in the VoD context. This analysis provides valuable insight on
expectable abnormal behaviors of systems. We exploit the information obtained
using the Large Deviation Principle for the proposed Video on Demand use-case
for defining policies (Service Level Agreements). We believe these policies for
elastic resource provisioning and usage may be of some interest to all
stakeholders in the emerging context of cloud networkingComment: IEICE Transactions on Communications (2012). arXiv admin note:
substantial text overlap with arXiv:1209.515
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