COMM

The goal of data center network is to interconnect the massive number of data center servers, and provide efficient and fault-tolerant routing service to upper-layer applications. To overcome the problem of tree architecture in current practice, many ...

Data centers are a major consumer of electricity and a significant fraction of their energy use is devoted to cooling the data center. Recent prototype deployments have investigated the possibility of using outside air for cooling and have shown large ...

Energy consumption is a major and costly problem in data centers. A large fraction of this energy goes to powering idle machines that are not doing any useful work. We identify two causes of this inefficiency: low server utilization and a lack of power-...

Compression enables us to shift resource bottlenecks between IO and CPU. In modern datacenters, where energy efficiency is a growing concern, the benefits of using compression have not been completely exploited. As MapReduce represents a common ...

In backbone networks, the line cards that drive the links between neighboring routers consume a large amount of energy. Since these networks are typically overprovisioned, selectively shutting down links during periods of low demand seems like a good ...

Several powerful forces are gathering to make fundamental and irrevocable changes to the century-old grid. The next-generation grid, often called the 'smart grid,' will feature distributed energy production, vastly more storage, tens of millions of ...

Reducing the energy consumption of a wireless cellular network is an important and urgent problem. This paper studies the effect of cell sizes on the energy consumed by the network, assuming base station technologies of today and the future. Making cell ...

IPTV services are the fastest growing television services in the world today. This is a bandwidth intensive service, requiring low latency and tight control of jitter. To guarantee the quality of service required, service providers opt to multicast all ...

Energy efficiency is becoming increasingly important in the operation of networking infrastructure, especially in enterprise and data center networks. While strategies for lowering the energy consumption of network devices have been proposed, what is ...

Streaming movies over the Internet has become increasingly popular in recent years as an alternative to mailing DVDs to a customer. In this paper we investigate the environmental- and energy-related impacts of these two methods of movie content ...

This paper looks at optimising the energy costs for storing user-generated content when accesses are highly skewed towards a few "popular" items, but the popularity ranks vary dynamically. Using traces from a video-sharing website and a social news ...

With constantly increasing costs of energy, we ask ourselves what we can say about the energy efficiency of existing VoIP systems. To answer that question, we gather information about the existing client-server and peer-to-peer VoIP systems, build ...