Suspend-to-PCM: A New Power-Aware Strategy for Operating System's Rapid Suspend and Resume

摘要

Modern data centers provide good performance and many kinds of services accompanying considerable power consumption. Reducing power consumption becomes essential for decreasing the operating costs. Unlike conventional ways, authors propose the novel Suspend-to-PCM hibernation strategy to provide rapid suspending and resuming of the operating system (OS). Characterized by its low access latency and low energy consumption, Phase change memory (PCM) is a kind of non-volatile flash media. Strategy in the paper is to suspend OS from memory to PCM rather than disk, and vice versa for the resuming. Since PCM owns much better property of access speed and power utilization than traditional storage media, the Suspend-to-PCM strategy is able to achieve improved performance of system suspending and low power consumption.