How does CPU know how much time a process take to complete?
Question
I studying various CPU scheduling algorithm in OS, I was asked this question once I was not able to answer it. Can anyone explain me?
1 answers
solution1
1 ACCPTED 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). There is a weighted average CPI for each job. I hope this answers the question. But if you are talking about burst time then there is a default value to those unknown processes.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.
Related Question
How much time sync() can take at max?
How does a kernel come to know that the CPU is idle?
How does the CPU know that it needs to start executing the context of a new thread?
How does the OS keep interrupted process always running on specified CPU?
How does process switch take place in full virtualized VM?
How does OS know to which process send a keyboard interrupt?
First for loop take much time
How to dedicate a single CPU for a specified child process?
How does an operating system know the time without an internet connection?
How does DMA affect CPU?
Related Tags