JackTrip/SoundWIRE Meets Server Farm

Coordinated DVS for QoS Control in Energy-efficient Web Clusters

The design of energy-efficient computing systems involves seeking any slack that the system can offer. With real-time modeling, one avenue is to design the system’s resource management to control the quality of service (QoS) at the lowest level that still meets the real-time specification, avoiding overprovisioning of the system, and thus saving energy. To achieve QoS control, we obtain dynamic...

JackTrip: Under the Hood of an Engine for Network Audio

The design of a platform for bi-directional musical performance using modern WAN networks poses several challenges that are different from related applications, e.g., synchronous LAN studio systems or uni-directional WAN streaming. The need to minimize as much as possible audio latency and also maximize audio quality requires specific strategies which are informed, in part, by musical decisions...

Issues in Server Farm Design for Real Time E-commerce Transactions

Feasibility of Eliminating IDPS Devices from a Web Server Farm

Current web security systems need Intrusion Detection and Prevention Systems (IDPS), web proxies and firewalls to protect the websites from malicious network traffic. All these functions come at a cost for a web farm and add to power costs. Our previous work has concluded that the web server detection of application layer DDoS attacks is far more power efficient than an equivalent IDPS. This pa...

Adapting eFinance Web Server Farms to Changing Market Demands

The evolution of the eFinance Market presents new and changing requirements on web server farm architecture. Web server farms built during the boom years of the web were designed to provide service to a very large number of users, where each request however placed relatively little load on the system. Further, the requests displayed a large amount of statistical similarity, so that caching mech...