Process Scheduling

Question

Consider the following table:

l

Using the shortest remaining time first, find the completion time of a process P₂ , if the context switching overhead is 1 unit ?

Answer 1

Here 2 assumption has to be made

1) All process arrive at the same time

2) I/O can be done in a maximum overlapping fashion

$_{0}P0_{6}//_{7}P1_{10}//_{11}P0_{12}//_{13}P1_{16}//_{17}P2_{22}//_{23}P1_{24}//_{25}P2_{30}//_{38}//_{39}P2_{41}$

Completion time of P2 is 47 units

Comments

why are you executing p2 from 19 to 24 .i think its execute from 19 to 25 because till 25 p1 busy with i/o .correct me if i wrong

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correct answer poor explaination

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@akharatgate actually I wrote this answer through my mobile phone so it's kind bad if you can write with better explanation it will be really helpful to everyone l