嵌入式操作系统多策略调度模型

Multi-Policy Scheduling Model for Embedded Operation System

分析了目前嵌入式操作系统调度策略的现状,指出了传统调度方法的不足之处,给出了多策略调度模型,该模型根据进程的属性参数决定采用哪种调度算法。多策略调度模型采用两级调度方案,即在原传统调度方法的基础上增加一级调度。一级调度确定多个调度算法的优先顺序;二级调度确定同一种调度算法中,的进程优先顺序。该模型使进程调度更加灵活和高效,应用范围更广。

Analyzing the existing scheduling algorithm of embedded operation system, this paper tells the shortcomings of traditional scheduling model, such then, sets up a multi-policy scheduling model which selects corresponding scheduling algorithms according to the attribute of process, This model adopts two-level scheduling, namely, adding another scheduling based on traditional scheduling model, The first level scheduling decides the priority of many scheduling algorithms, and the second one decides the priority of process among the same scheduling algorithm, It orovides more flexible and effective scheduling for wider application,