处理机调度算法的设计需要考虑系统的设计目标，而且通常算法设计不能复杂，否则会带来过大的系统开销，因为处理机切换发生非常频繁。也正因为此，通常将调度与上下文切换过程以汇编语言书写-processor scheduling algorithm design need to consider the design goals, but usually not complex algorithm design. it will bring too much system overhead, as pro