Pack Up Cloud: Recursive Datacenter Resource Management and Experimental Studies

Today's virtualized resource management in datacenters is typically VM-centric, which has serious problems in scalability. We propose a shift from the traditional flat, fine-grained model towards a hierarchical, abstract model that facilitates decomposition of the complex resource allocation problem in a divide-and-conquer approach. In particular, this paper elaborates a pack-centric framework in datacenter resource management, provides a case study with a recursive algorithm, and presents detailed results from experimental studies on VM-PM mapping through recursive resource allocation, which demonstrates the performance and scalability of the pack-centric framework.