Best-Effort Power Model Serving for Energy Quantification of Cloud Instances

Quantifying energy consumption is a fundamental element of green computing. Power models trained by resource utilization allow quantifying the energy number and enable energy-efficient resource management systems without raising the concerns of complexity, cost, and security. However, energy consuming behavior on different machines varies by several factors. In this paper, we address the challenges of power modeling for cloud instances where information about these factors is obscured or unseen in the training set, and propose a best-effort method to train and serve a power model as precise as possible by leveraging a large, industry-standard power database. The proposed method prioritizes the modeling precision, and offers similarity and uncertainty indicators to elucidate the confidence level when serving an unseen instance. The results have demonstrated feasibility and precision of the proposed method against comparable approaches.