进程调度算法性能测试主要性能指标为：周转时间,带权周转时间等。给出对以下算法的评价：

①先来先服务调度算法

②短作业(进程)优先调度算法

③抢占式的高优先权优先调度算法

④时间片轮转调度算法

注意：测试的对象是作业(进程)个体或同一类型的作业(进程)。

如短作业(进程)优先调度算法应考虑对不同的进程的周转时间有何影响？

-The progress adjust one degree calculate way performance test

The main function index sign is:Turnover time, take power to turnover time etc..Give to the following the evaluation of the calculate way:

　 ① First come first the service adjust one degree calculate way

　 The ② short homework(progress) has the initiative to adjust one degree calculate way

　 The ③ rob the Gao priority of share type to have the initiative to adjust one degree calculate way

　 ④ Time the slice rotate to adjust one degree calculate way

Attention:The object of test is homework(progress) individual or same homework(progress) of type.

　　　Having the initiative to adjust one degree calculate way such as the short homework(progress) should consideration to dissimilarity of progress of turnover does time have influence?