원문정보
초록
영어
Modern cloud data centers are virtualized for resource multiplexing and services consolidations. Virtual machines (VMs) residing in the same server cluster share the same hardware resources and power supply while they may have different QoS requirements for their services and applications. Moreover, the power consumption of the server cluster is highly dynamic since different virtual machines have different workloads due to different services requests. Cluster level power and QoS coordination is crucial for data center level energy efficiency coordination as well as high quality service provisioning. In this paper we propose the power and QoS aware multi-level resource coordination and scheduling in virtualized servers, i.e., the cluster-level power control layer, the VMs resource allocation layer, and the QoS optimization layer. This three-level controlling framework schedules and allocates hardware resource for QoS guarantee and cluster level power management. We use dynamic frequency scaling for QoS mitigating when power budget changes. The experiment results show that the proposed multi-level coordinated control architecture consumes 5.36% and 6.96% less power for web servers and computing intensive virtual machines, respectively while it can guarantee the response time of web server and execution time of computing tasks no more than those without the proposed controlling approach.
목차
1. Introduction
2. Multi-level Control Architecture
2.1. Cluster Level Power Control Layer
2.2 VMs Resource Allocation Layer
2.3 QoS Optimization Layer
2.4. Multi-level Control Coordination
3. Performance Evaluation
3.1 Experimental Setup
3.2 Control Verification for Real-time Tasks
3.3 Control Verification for Computing Intensive Tasks
4. Conclusion
References