CPU如何知道一个进程需要多少时间才能完成？
[英]How does CPU know how much time a process take to complete?
问题描述
I studying various CPU scheduling algorithm in OS, I was asked this question once I was not able to answer it.
我研究了操作系统中的各种 CPU 调度算法，一旦我无法回答，我就被问到这个问题。 Can anyone explain me?谁能解释我？
1 个解决方案
解决方案1
1 已采纳 2019-10-31 15:09:28
OS can compute the total needed time for each task, by means of first calculating its CPI (cycles per instruction).操作系统可以通过首先计算其 CPI（每条指令的周期）来计算每个任务所需的总时间。 There is a weighted average CPI for each job.每项工作都有一个加权平均 CPI。 I hope this answers the question.我希望这能回答这个问题。 But if you are talking about burst time then there is a default value to those unknown processes.但是，如果您谈论的是突发时间，那么这些未知进程就有一个默认值。
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.