Non-Uniform Power Distribution in Data Centers for Safely Overprovisioning Circuit Capacity and Boosting Throughput
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Date
2005-04-06
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Abstract
Management of power in data centers is driven by the need to not exceed circuit capacity. Such techniques are evolving from ad hoc methods based on maximum node power usage to systematic methods that employ power-scalable components. These components allow for dynamically controlling power consumption with an accompanying effect on performance. Because the incremental performance gain from operating in a higher performance state is less than the increase in power, it is possible to overprovision the hardware infrastructure to increase throughput and yet still remain below an aggregate power limit. In overprovisioning, if each component operates at maximum power the limit would be exceeded with disastrous results.
However, safe overprovisioning regulates power consumption locally to meet the global power budget. This research work presents PICLE, the Power Infrastructure Controller for Limited Environments. This framework is designed for boosting throughput through intelligent monitoring of server clusters by load-balancing available aggregate power under a set of operating constraints. The solution is useful for data centers that cannot expand the number of power circuits or seek effective usage of the available power budget due to power fluctuations. The framework is also ideally suited for environments with a heterogeneous workload and hence, a non-uniform power allocation requirement. Synthetic benchmarks indicate overprovisioning throughput gains of nearly 6% from a staticly assigned, power managed environment and over 30% from an unmanaged environment. In addition, based on a representative workload for a two minute period, a non-uniform power allocation scheme is shown to increase throughput by over 16% versus a uniform power allocation mechanism.
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safe overprovisioning, server cluster power, feedback, dvs
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Degree
MS
Discipline
Computer Science
