CPU scheduler will decide which process should be given the CPU for its execution. For this it uses different algorithm to choose among the process. One among that algorithm is FCFS algorithm. In this algorithm the process which arrives first is given the CPU after finishing its request only it will allow the CPU to execute another process. Write a c program to implement the first come first serve CPU scheduling algorithm Sample output: Enter number of processes:3 Enter the burst times: Gantt chartPi P2 P3 Process Burst Time Waiting Time Turnaround Time 8 5 9 P1 P2 P3 13 Average Waiting Time is 7.000000 Average Turn around Time is 14.333333 8 22

CPU scheduler will decide which process should be given the CPU for its execution. For this it uses different algorithm to choose among the process. One among that algorithm is FCFS algorithm. In this algorithm the process which arrives first is given the CPU after finishing its request only it will allow the CPU to execute another process. Write a c program to implement the first come first serve CPU scheduling algorithm Sample output: Enter number of processes:3 Enter the burst times: Gantt chartPi P2 P3 Process Burst Time Waiting Time Turnaround Time 8 5 9 P1 P2 P3 13 Average Waiting Time is 7.000000 Average Turn around Time is 14.333333 8 22

Name: CPU scheduler will decide which processshould be given the CPU for it
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Description: CPU scheduler will decide which processshould be given the CPU for itsexecution. For this it uses differentalgorithm to choose among the process.One among that algorithm is FCFSalgorithm. In this algorithm the processwhich arrives first is given the

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Chapter1: Introduction

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Question

CPU scheduler will decide which process
should be given the CPU for its
execution. For this it uses different
algorithm to choose among the process.
One among that algorithm is FCFS
algorithm. In this algorithm the process
which arrives first is given the CPU after
finishing its request only it will allow the
CPU to execute another process. Write a
c program to implement the first come
first serve CPU scheduling algorithm
Sample output:
Enter number of processes:3
Enter the burst times:
Gantt chartPL P2
P3
Process Burst Time Waiting Time Turnaround Time
8
5
P1
P2
P3
0
13
Average Waiting Time is 7.000000
Average Turn around Time is 14.333333
8
22

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CPU scheduler will decide which process should be given the CPU for its execution. For this it uses different algorithm to choose among the process. One among that algorithm is FCFS algorithm. In this algorithm the process which arrives first is given the CPU after finishing its request only it will allow the CPU to execute another process. Write a c program to implement the first come first serve CPU scheduling algorithm Sample output: Enter number of processes:3 Enter the burst times: Gantt chartPi 92 P3 Process Burst Time Waiting Time Turnaround Time 8 5 P1 P2 P3 0 13 Average Waiting Time is 7.000000 Average Turn around Time is 14.333333 8 22
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2. a) Your colleague has invented a new scheduling algorithm using the multilevel queue approach. This list of processes showing CPU burst times is below. There are three queues used in the application. The processes all start on the first queue and receive upto 10ms of burst time. Once the process has received the 10ms on the first queue, if the process still requires burst time it is passed to the second queue where it receives upto 20ms. Once the process has received the 20ms on the second queue, if the process still requires burst time it is passed to the third queue where it receives CPU time until it is completed. The operating system will only start allocating CPU time to processes on the second queue when queue 1 is empty. The operating system will only start allocating CPU time to processes on the third queue when queue 2 is empty. Process Number P1 P2 P3 P4 Burst time (ms) 21 8 35 50 i) Does this algorithm give higher priority to any queue over the others and any processes…
Assume a computer system has a main memory of 256 Bytes. The following is a memory byte-access trace history of a program run on this system. For example, as it is shown, the program first accesses memory address 0000 0000, and then it accesses memory address 0000 0001 and so on. Note the memory addresses are represented in binary: 00000000, 00000001, 00000010, 00000011, 00001000, 00010000, 00010001, 00000100, 00000101, 00000110, 00000111, 00001001, 00001010, 00001011, 00001100, 00001000, 00001001, 00001010, 00011100, 00011101.