Thursday, September 1, 2011
SPEAKER: Anshul Gandhi, CMU
TITLE: AutoScale: Dynamic Power Management for Multi-Tier Data Centers
We introduce a power management algorithm, AutoScale, that greatly reduces power costs in data centers driven by unpredictable, time- varying load, while meeting response time SLAs. AutoScale scales the data center capacity, turning servers on and off as needed.
We evaluate our power-management approach via implementation on a 38- server multi-tier data center, serving a web site of the type seen in Facebook or Amazon, with a key-value store workload. We find that AutoScale improves upon the current static power management used in data centers by up to 50% with respect to power, and furthermore, vastly improves upon existing dynamic power management policies with respect to meeting SLAs and robustness.