WattApp: An Application Aware Power Meter for Shared Data Centers

The increasing heterogeneity between applications in emerging vir-tualized data centers like clouds introduce significant challenges in estimating the power drawn by the data center. In this work, we present WattApp: an application-aware power meter for shared data centers that addresses this challenge. In order to deal with hetero-geneous applications, WattApp introduces application parameters (e.g, throughput) in the power modeling framework. WattApp is based on a carefully designed set of experiments on a mix of di-verse applications: power benchmarks, web-transaction workloads, HPC workloads and I/O-intensive workloads. Given a set of N ap-plications and M server types, WattApp runs in O(N) time, uses O(N ×M) calibration runs, and predicts the power drawn by any arbitrary placement within 5 % of the real power for the applications studied