Today the main limit to Cloud adoption is related to the perception of a security loss the users have. Indeed, the existing solutions to provide security are mainly focused on Cloud service provider prospective in order to securely integrate frameworks and Infrastructures as a Services in a Cloud datacenter. Customer could not monitor and evaluate the security mechanisms enforced by service pro...

Data center networks are considered to make use of the computing and storage resources in data centers, which include intra-datacenter and inter-datacenter networks. Both of them will depend on the optical networking due to its advantages, such as low latency, high bandwidth, and low energy consumption. Data center interconnected by flexi-grid optical networks is a promising scenario to allocat...

TCP is a low cost and easy-to-use transport layer protocol widely used in datacenter based applications and web services. Many TCP congestion control algorithms have been proposed to improve the performance of TCP in datacenter networks. However, the emerging wireless technologies in datacenter networks create new problems for TCP congestion control. On the one hand, TCP algorithms must suit th...

Replay Debugging for the Datacenter by Gautam Deepak Altekar Doctor of Philosophy in Computer Science University of California, Berkeley Professor Ion Stoica, Chair Debugging large-scale, data-intensive, distributed applications running in a datacenter (“datacenter applications”) is complex and time-consuming. The key obstacle is non-deterministic failures—hard-to-reproduce program misbehaviors...

......Parthasarathy (Partha) Ranganathan received the 2013 Maurice Wilkes Award “for contributions to the design of power-efficient microblade servers and pioneering work in disaggregated system designs.” Partha has been a leading advocate for new system designs to improve energy efficiency and total cost of ownership (TCO) in large-scale datacenters. The technology inflection point of the last...

Problem statement: Task scheduling is the main factor that determines the performance of any distributed system. Cloud computing comes with a paradigm of distributed datacenters. Each datacenter consists of physical machines that host virtual machines to execute customers’ tasks. Resources allocation on the cloud is different from other paradigms and the mapping algorithms need to be adapted to...

Enterprises are increasingly deploying their applications in the cloud given the cost-saving advantages, and the potential to geo-distribute applications to ensure resilience and better service experience. However, a key unknown is whether it it is feasible to meet the stringent response time requirements of enterprise applications using the cloud. We make several contributions. First, we show ...

Cloud computing is gaining popularity as a way to virtualize the datacenter and increase flexibility in the use of computation resources. This type of system is best exemplified by Amazon’s Elastic Compute Cloud and related products. Recently, a new open-source framework called Eucalyptus has been released that allows users to create private cloud computing grids that are API-compatible with th...

In this paper, we address the problem of reducing Cloud datacenter high energy consumption with minimal Service Level Agreement (SLA) violation. Although there are many energy-aware resource management solutions for Cloud datacenters, existing approaches focus on minimizing energy consumption while ignoring the SLA violation at the time of virtual machine (VM) deployment. Also, they do not cons...