节能服务速率控制机制的设计:Linux下的CPU频率控制

2013 24th Tyrrhenian International Workshop on Digital Communications - Green ICT (TIWDC) Pub Date : 2013-09-01 DOI:10.1109/TIWDC.2013.6664216

M. Karpowicz

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引用次数: 6

摘要

提出了一个简单的服务率控制系统模型，该模型可用于设计能量感知控制规则，使处理机能够根据观察到的工作负载调整其运行能力。该模型利用了一个双目标处理性能指标，该指标综合了能源消耗成本和服务交付成本。给出了相关随机最优控制问题的近似解。在此基础上，设计并实现了一套Linux内核的CPU频率控制调控器。接下来，将所设计控制器的性能与Linux cpufreq_ondemand调控器的性能进行实验比较。所得结果为提高Linux内核CPU频率控制机制的效率提供了建议。对实验环境作了简要描述。

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On the design of energy-efficient service rate control mechanisms: CPU frequency control for Linux

A simple model of service rate control system is presented that may be used to design energy-aware control rules for the processors capable of adjusting their operating capabilities to the observed workload. The model exploits a bi-objective processing performance index aggregating the cost of energy consumption and the cost of service delivery. An approximate solution to the related stochastic optimal control problem is presented. Based on the obtained results a collection of CPU frequency control governors for the Linux kernel was designed and implemented. Performance of the designed controllers was next experimentally compared to the performance of the Linux cpufreq_ondemand governor. The obtained results suggest ways to improve efficiency of the Linux kernel CPU frequency control mechanisms. A brief description of the experimental environment is given.

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来源期刊

2013 24th Tyrrhenian International Workshop on Digital Communications - Green ICT (TIWDC)

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