Testbook test series- how can P2 block P1?

Consider the following synchronization construct used by the processes P1, P2, and P3. The S1, S2 and S3 are counting semaphore variables:S1 = 3, S2 = 2, S3 = 1;P(S1);P(S...

syncronizing

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syncronizing asked Jan 6, 2019

Operating System
made-easy-test-series
semaphore
operating-system

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Sanjay Sharma asked Mar 26, 2016

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A set of processors P1, P2, ……, Pk can execute in parallel if Bernstein’s conditions
A set of processors P1, P2, ……, Pk can execute in parallel if Bernstein’s conditions are satisfied on a pairwise basis; that is P1 || P2 || P3 || ….. || Pk if and only if : (A) Pi || Pj for all i ≠ j (B) Pi || Pj for all i = j+1 (C) Pi || Pj for all i < j (D) Pi || Pj for all i > j

A set of processors P1, P2, ……, Pk can execute in parallel if Bernstein’s conditions are satisfied on a pairwise basis; that is P1 || P2 || P3 || ….. || Pk if and...

Sanjay Sharma

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Sanjay Sharma asked Mar 26, 2016

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1 answer

kamogelommoyane asked Mar 10

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Three process P1, P2 and P3 arrive at time zero. Their total execution time is 10ms, 20ms, and 30ms respectively. They spent first 20% of their execution time in doing I/O, next 70% in CPU processing and the last 10% again doing I/O. For what percentage of time was the CPU free? Using SRTF algorithm

kamogelommoyane

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kamogelommoyane asked Mar 10

Operating System
operating-system

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1 answer

Mukesh_Kumar asked Dec 30, 2023

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Let there are 4 processes P1, P2, P3 and P4 whose arrival time is 0 milliseconds and CPU burst time are 6, 8, 7 and 3 milliseconds respectively. If the operating system uses shortest job first scheduling algorithm, then the difference between waiting time of process P3 and P₁ is 1) 3 milliseconds 2) 6 milliseconds 3) 9 milliseconds 4) 12 milliseconds

Mukesh_Kumar

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Mukesh_Kumar asked Dec 30, 2023

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