What is the difference between Completion time and response time when dealing with scheduling policies

Question

I've been looking online for a while now, trying to find definitions and examples on these two terms but I cannot seem to get a straight answer and I am simply getting more confused.

Could someone explain the difference to me. A nice and descriptive article would help.

score 13 · Accepted Answer · answered Nov 22 '15 at 20:48

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I haven't found any link containing the description of "Completion time", nor I read that in my OS course. I think you are inquiring about the Turnaround time.

Turnaround time - Time required for a particular process to complete, from submission time to completion. It is equal to the sum total of Waiting time and Execution time.

Response time - The time taken in a program from the issuance of a command to the commence of a response to that command.(i.e., the time-interval between submission of a request, and the first response to that request, not the output .)

answered Nov 22 '15 at 20:48

Am_I_Helpful

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Those this mean that **Response time is the difference between first execution time and Arrival time.** according to @sudipSarker? – booluw May 08 '19 at 21:49
@jayB - I didn't get whether you're asking a question, or making a point here! Would you clarify please? – Am_I_Helpful May 09 '19 at 17:15
not to worry much. Asked for clarity if sudipSarker's answer was same as yours. Thanks anyway. – booluw May 10 '19 at 14:16
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@jayB - Yes, just the wording difference! – Am_I_Helpful May 10 '19 at 20:32
Completion time is the point in time when the process terminates or finishes execution. – Mahi Jan 20 '20 at 04:10

score 4 · Answer 2 · edited Nov 13 '16 at 17:01

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Completion Time Completion time Can be found from Gantt Chart When a process stop executing That is completion time.

Response Time Response time is the difference between first execution time and Arrival time.

edited Nov 13 '16 at 17:01

Ormoz

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answered Nov 13 '16 at 15:30

sudip sarker

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score 1 · Answer 3 · edited May 10 '18 at 02:51

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In case of scheduling policies:

COMPLETION TIME

The time when a job or process is completed.
RESPONSE TIME

Time interval between the submission of a job, process or sub- request (the moment it enters a ready state/arrives to the scheduler) and the first response received from it.

edited May 10 '18 at 02:51

Filippos Zofakis

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answered Sep 08 '17 at 13:50

Abhipsa Mishra

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Meenakshi · Answer 4 · 2018-10-24T02:20:39.860

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Completion time : this is the time when process arrives the cpu means arrival time and + cpu execution time +any other interrupt time till the complete execution of the process. Arrival time is not added if process arrives before the execution of earlier process. Response time : it is the time when process gets cpu response for first time after arriving the queue. Same as waiting time.

edited Oct 24 '18 at 02:20

answered Oct 24 '18 at 01:58

Meenakshi

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score 0 · Answer 5 · answered Feb 20 '18 at 08:02

The time taken by the system to respond to an input and display of required updated information is termed as the response time.

The time taken from submission of the job to the time completion of the job is TurnAround Time. Sum of Burst time and the waiting Time

score -2 · Answer 6 · answered May 25 '18 at 18:02

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Response Time: Time between job’s arrival in the ready queue and job’s completion for example - Time to echo a keystroke in editor - Time to compile a program

Response Time = Waiting Time + COMPLETION TIME Time

COMPLETION TIME: The time when a job or process is completed.

answered May 25 '18 at 18:02

fasil

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The accepted answer has given the right definition of Response Time – Mahi Jan 20 '20 at 04:17

What is the difference between Completion time and response time when dealing with scheduling policies

6 Answers6