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本文用统计平均法导出了磁盘存贮器与CPU交换数据时CPU利用率的计算式。可以利用导出的算式,从系统的角度评价并选择与CPU相匹配的磁盘存贮器,以便能收到既缩短运行时间又节约设备费用的技术经济效果。通过对影响CPU利用率诸因素的分析,还可以明确提高磁盘存贮器技术性能的努力方向,避免在选择技术参数时的盲目性。
In this paper, statistical averaging method is derived from the disk memory and CPU data exchange CPU utilization formula. The derived formula can be used to evaluate and select the disk memory that matches the CPU from the system point of view so as to receive the technical and economic benefits of reducing operating costs and equipment costs. By analyzing the factors that affect CPU utilization, you can also clearly improve the direction of hard disk storage technology performance, to avoid blindness in the selection of technical parameters.