Cluster-level feedback power control for performance optimization

Power control is becoming a key challenge for effectively operating a modern data center. In addition to reducing operating costs, precisely controlling power consumption is an essential way to avoid system failures caused by power capacity overload or overheating due to increasing high server density. Control-theoretic techniques have recently shown a lot of promise on power management thanks to their better control performance and theoretical guarantees on control accuracy and system stability. However, existing work oversimplifies the problem by controlling a single server independently from others. As a result, at the cluster level where multiple servers are correlated by common workloads and share common power supplies, power cannot be shared to improve application performance. In this paper, we propose a cluster-level power controller that shifts power among servers based on their performance needs, while controlling the total power of the cluster to be lower than a constraint. ...

• Type: Conference
• Year: 2008
• Where: HPCA
• Authors: Xiaorui Wang, Ming Chen
• Keywords: Accurate Power Control, Cluster-level Power Controller, Computer Architecture, HPCA 2008, Power Capacity Overload