This paper aims at the above-mentioned problem and extends the original DPM architecture by adding two modules, namely, the system workload detecting and policy optimizing modules.

• 文中在原有DPM框架中加入了系统负载检测和策略优化两个模块，对原有框架进行了扩展，得到了一个更为完整的DPM框架，并给出了应用该框架实现策略优化算法的实例。