Download - Scheduling Selective
![Page 1: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/1.jpg)
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7
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
Arrival Processing
Process Time Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
![Page 2: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/2.jpg)
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8
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 3: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/3.jpg)
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9
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
Arrival Times of the Jobs
![Page 4: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/4.jpg)
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10
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 5: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/5.jpg)
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11
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 6: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/6.jpg)
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12
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 7: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/7.jpg)
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13
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 8: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/8.jpg)
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14
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 9: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/9.jpg)
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15
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 10: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/10.jpg)
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16
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 11: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/11.jpg)
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17
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 12: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/12.jpg)
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18
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 13: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/13.jpg)
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19
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 14: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/14.jpg)
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20
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 15: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/15.jpg)
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21
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Total time taken,from submission to
completion
![Page 16: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/16.jpg)
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22
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3 0
2 2 6 1
3 4 4 5
4 6 5 7
5 8 2 10
Total time taken,from submission to
completion
![Page 17: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/17.jpg)
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23
First-Come, First-Served (FIFO) Start jobs in the order they arrive (FIFO queue) Run each job until completion
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3 0 3
2 2 6 1 7
3 4 4 5 9
4 6 5 7 12
5 8 2 10 12
Total time taken,from submission to
completion
![Page 18: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/18.jpg)
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Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
![Page 19: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/19.jpg)
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25
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
Same Job Mix
![Page 20: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/20.jpg)
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26
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround
Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
![Page 21: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/21.jpg)
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27
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
![Page 22: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/22.jpg)
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Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
![Page 23: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/23.jpg)
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29
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 5
5 8 2
![Page 24: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/24.jpg)
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30
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 25: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/25.jpg)
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31
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 26: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/26.jpg)
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32
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 27: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/27.jpg)
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Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 28: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/28.jpg)
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34
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 29: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/29.jpg)
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35
Shortest Job First Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 30: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/30.jpg)
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36
Shortest Job First
Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 31: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/31.jpg)
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37
Shortest Job First
Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 32: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/32.jpg)
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38
Shortest Job First
Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3 0
2 2 6 1
3 4 4 7
4 6 5 95 8 2 1
![Page 33: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/33.jpg)
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39
Shortest Job First
Select the job with the shortest (expected) running time Non-Preemptive
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3 0 3
2 2 6 1 7
3 4 4 7 11
4 6 5 9 145 8 2 1 3
![Page 34: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/34.jpg)
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40
Shortest Remaining Time
Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
Same Job Mix
![Page 35: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/35.jpg)
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41
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 36: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/36.jpg)
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42
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 37: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/37.jpg)
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43
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 38: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/38.jpg)
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44
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 39: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/39.jpg)
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45
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 40: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/40.jpg)
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46
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 41: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/41.jpg)
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47
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 42: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/42.jpg)
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48
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 43: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/43.jpg)
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49
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 44: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/44.jpg)
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50
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 45: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/45.jpg)
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51
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 46: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/46.jpg)
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52
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 47: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/47.jpg)
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53
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3
2 2 6
3 4 4
4 6 55 8 2
![Page 48: Scheduling Selective](https://reader030.vdocuments.mx/reader030/viewer/2022021118/577d1e7d1a28ab4e1e8e9d34/html5/thumbnails/48.jpg)
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54
Shortest Remaining Time
• Preemptive version of SJF
0 5 10 15 20
Arrival Processing Turnaround Process Time Time Delay Time
1 0 3 0
2 2 6 7
3 4 4 0
4 6 5 95 8 2 0
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Shortest Remaining Time
• Preemptive version of SJF
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3 4 4 0 4
4 6 5 9 145 8 2 0 2
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Round-Robin Scheduling
Goal: Enable interactivity Limit the amount of CPU that a process can have at
one time.
Time quantum Amount of time the OS gives a process beforeintervention The “time slice” Typically: 1 to 100ms
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ound ob n Schedul ng
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1 0 3 1 4
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