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Leitourgika Ian 2011
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2011
1. 7
:
5: P1 315: P5 18: P7 320: P3 224: P5 328: P5 (process swap)33: interrupt 2. P3 36: interrupt 3. P1 38: P8 40: interrupt 3, P5 44: P5 48: interrupt 3, P7
31, 39, 49.
, .
2. 10 4 (frames) KM. page trace :
1 0 2 2 1 7 6 7 6 7 0 1 2 0 3 4 5 1 8 2 4 5 6 7 6 7 2 4 9 7 3 3 2 3 LRU . hit ratio . .
1 0 2 2 1 7 6 7 6 7 0 1 2 0 3 4 5 1 8 2 4 5 6 7 6 7 2 4 9 7 3 3 2 3
1
2
3
4
Fault
3. 4 8 . 4kb. ? ? .
4. 3 :
1. roundRobin Q1=4ms2. roundRobin Q2=6ms3. SJF
.
Processes Start Time Run Time Priority
A 0 13 1
B 2 7 1
C 4 15 2
D 7 3 3
5. 4000 (tracks). 0 3999, 315 201. FIFO:
120 1470 91 2888 948 1678 1001 130
( ) :a) SSTF C-SCAN b) 4-step SCAN
6. , . video , . .
n Pandora Robot. . Pandora Robot , () . n . ( ) .
n Pandora Robots .
: 5 pc CPU ready running