Operating Systems - David Vernon

More documents

Recommendations

Info

Processes Process Scheduling – Priority Scheduling » Some OS have priority classes » and do round robin scheduling within a class » Note: if priorities are not reassigned from time to time, some low priority processes will starve Copyright © 2007 David Vernon (www.vernon.eu)
Processes Process Scheduling – ‘Shortest Job First’ Scheduling » Designed for batch systems » Scheduler runs the shortest job first » It minimizes the overall response time » How to estimate the length of a job? Estimate based on previous runs E.g. take weighted average of runs at time t i and t i-1 t i+1 = w 1 i-1 t i-1 + w 1 i t i This is called aging Copyright © 2007 David Vernon (www.vernon.eu)
Page 1 and 2:
Operating Systems David Vernon Copy
Page 3 and 4:
Course Content Historical overview
Page 5 and 6:
Course Content Device management -
Page 7 and 8:
Course Content Networking issues -
Page 9 and 10:
Course Textbook “Modern Operating
Page 11 and 12:
Assessment of Performance First exa
Page 13 and 14:
The Need for Operating Systems Why
Page 15 and 16:
The Need for Operating Systems Comp
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
The Need for Operating Systems Exam
Page 25 and 26:
Load B DR ← M(AR) A B C 11111111
Page 27 and 28:
Load B Increment PC A B C 11111111
Page 29 and 30:
Load B AR ← DR(address) A B C 111
Page 31 and 32:
Load B AC ← DR A B 11111111 01001
Page 33 and 34:
The Need for Operating Systems Mach
Page 35 and 36:
Page 37 and 38:
What is an Operating System There a
Page 39 and 40:
What is an Operating System OS as a
Page 41 and 42:
History of Operating Systems First
Page 43 and 44:
History of Operating Systems Second
Page 45 and 46:
History of Operating Systems Third
Page 47 and 48:
History of Operating Systems Third
Page 49 and 50:
History of Operating Systems Fourth
Page 51 and 52:
Operating System Concepts System ca
Page 53 and 54:
Operating System Concepts Processes
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Operating System Concepts Files - O
Page 61 and 62:
Operating System Concepts Copyright
Page 63 and 64:
Operating System Concepts Files -Pr
Page 65 and 66:
Operating System Concepts Files - O
Page 67 and 68:
Operating System Concepts System Ca
Page 69 and 70:
Operating System Concepts The Shell
Page 71 and 72:
Operating System Structure Monolith
Page 73 and 74:
Operating System Structure Monolith
Page 75 and 76:
Operating System Structure Virtual
Page 77 and 78:
Operating System Structure Virtual
Page 79 and 80:
Operating System Structure Client-S
Page 81 and 82:
Operating System Structure Client-S
Page 83 and 84:
Processes All modern computer syste
Page 85 and 86:
Processes Single program counter Fo
Page 87 and 88:
Processes Because the OS schedules
Page 89 and 90:
Processes Process Hierarchies - pro
Page 91 and 92:
Processes Running 1 Blocked 4 3 2 R
Page 93 and 94:
Processes Device I/O … the differ
Page 95 and 96:
Processes Interrupts and device I/
Page 97 and 98:
Processes InterProcess Communicatio
Page 99 and 100:
Processes Process A Spooler directo
Page 101 and 102:
Processes Process A Process B Print
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Processes /* process 0 */ main () {
Page 115 and 116:
Processes /* process 0 */ main () {
Page 117 and 118: while (turn == process && intereste
Page 119 and 120: while (turn == process && intereste
Page 121 and 122: Processes /* process 0 */ main () {
Page 123 and 124: Processes InterProcess Communicatio
Page 131 and 132: Processes void consumer(void) { int
Page 141 and 142: Processes #include “prototypes.h
Page 157 and 158: Processes void consumer(void) { int
Page 161 and 162: Processes void writer(void) { while
Page 163 and 164: Processes Process Scheduling - Crit
Page 165 and 166: Processes Process Scheduling - Roun
Page 167: Processes Process Scheduling - Prio
Page 171 and 172: Processes Process Scheduling - Two
Page 173 and 174: Memory Management The part of the o
Page 175 and 176: Memory Management Memory management
Page 181 and 182: Memory Management Swapping - memory
Page 189 and 190: Memory Management Virtual Memory -
Page 191 and 192: Memory Management Disk Page 1 Proce
Page 193 and 194: Memory Management Disk Page 1 Proce
Page 199 and 200: Memory Management Virtual Address S
Page 205 and 206: Memory Management Second-level page
Page 219 and 220:
Memory Management Virtual Memory -
Page 221 and 222:
Memory Management Virtual Memory -
Page 223 and 224:
Memory Management Segmentation - Th
Page 225 and 226:
Memory Management Segmentation - To
Page 227 and 228:
Memory Management Segmentation » O
Page 229 and 230:
Memory Management Segmentation - It
show all

Operating Systems - David Vernon

Create successful ePaper yourself

Delete template?

Save as template?