“…Other schemes extend those heuristics by adding specific attributes (e.g., CPU usage, network and disk controller usage, and memory usage), summarized into a weighted value used to order PMs or to assign categories (e.g., star ratings [15]) that can be used to order PMs. In some schemes, attributes used to order PMs are determined by individual VM users [23,30,31], while in other schemes attributes are determined by the provider [13,14,19,27], or user and provider attributes are combined [21,22,23,26]. To limit our study, we elected to use heuristics based on those found in online bin-packing literature.…”