ACE: Abstracting, Characterizing and Exploiting Peaks and Valleys in Datacenter Power Consumption

Peak power management of datacenters has tremendous cost implications. While numerous mechanisms have been pro-posed to cap power consumption, real datacenter power con-sumption data is scarce. To address this gap, we collect power demands at multiple spatial and fine-grained tempo-ral resolutions from the load of geo-distributed datacenters of Microsoft over 6 months. We conduct aggregate analysis of this data, to study its statistical properties. With work-load characterization a key ingredient for systems design and evaluation, we note the importance of better abstractions for capturing power demands, in the form of peaks and valleys. We identify and characterize attributes for peaks and val-leys, and important correlations across these attributes that can influence the choice and effectiveness of different power capping techniques. With the wide scope of exploitability of such characteristics for power provisioning and optimiza-tions, we illustrate its benefits with two specific case studies