Ebook Operating system concept (8th edition) Part 1

... 10 .2 10 .3 10 .4 10 .5 File Concept 373 Access Methods 382 Directory Structure 385 File-System Mounting 395 File Sharing 397 Chapter 11 11 .1 11. 2 11 .3 11 .4 11 .5 11 .6 11 .7 File-System Interface 10 .6 ... Chapter 21 The Linux System 21. 1 21. 2 21. 3 21. 4 21. 5 21. 6 21. 7 21. 8 21. 9 21. 10 21. 11 21. 12 Linux History 737 Design Principles 742 Kernel Modules 745 Proce...

Ngày tải lên: 12/08/2014, 22:21

... processes as p2 Pi 10 p3 20 23 p2 Ps P4 30 40 Ps 50 52 p2 61 The waiting time is milliseconds for process Pi, 32 milliseconds for process P2, 20 milliseconds for process P3, 23 milliseconds for process ... 27) /3 = 17 milliseconds If the processes arrive in the order Pi, P3, Pi, however, the results will be as showrn in the following Gantt chart: 30 The average waiting time is now (6 +...

Ngày tải lên: 12/08/2014, 22:21

... of memory "operating"";:' : : jsystenn; :;; 25600 process 300 04

Ngày tải lên: 12/08/2014, 22:21

... interrupt every 5, 000 references When we get a timer interrupt, we copy and clear the reference-bit values for page reference table 26 157 77 751 623412344434344413234443444 WS(f,) = {1,2 ,5, 6,7} WS(f2) ... CloseHandle (hMapFile) ,• Figure 9. 25 Producer writing to shared memory using the Win32 API  352 Chapter Virtual Memory sequence in the program shown in Figure 9. 25 (We eliminate m...

Ngày tải lên: 12/08/2014, 22:21

... 14, 124, 65 , 67 head starts at 53 14 37 5 365 67 98 122124 183199 I—_J LJJ _J LJ , H >** Figure 12.7 C-SCAN disk scheduling I I 12.4 Disk Scheduling 461 queue 98, 183, 37, 122, 14, 124, 65 , 67 head ... idea of the next algorithm  460 Chapter 12 Mass-Storage Structure queue = 98, 183, 37, 122, 14 124, 65 , 67 head starts at 53 14 37 5 365 67 98 122124 183199 Figure 12 .6 SCAN disk sc...

Ngày tải lên: 12/08/2014, 22:21

... Walker [1 977 ] Organick [1 972 ] discussed the MULTICS ring protection system Revocation was discussed by Redell and Fabry [1 974 ], Cohen and Jefferson [1 975 ], and Ekanadham and Bernstein [1 979 ] The ... by Lampson [1969] and Lampson [1 971 ] Popek [1 974 ] and Saltzer and Schroeder [1 975 ] provided excellent surveys on the subject of protection Harrison et al [1 976 ] used a formal ver...

Ngày tải lên: 12/08/2014, 22:21

... Wood and Kochan [1 985 ], FarrowJ[1 986 b], Farrow [1 986 a], Filipski and Hanko [1 986 ], Hecht et al [1 988 ], Kramer [1 988 ], and Garfinkel et al [2003] Bershad and Pinkerton [1 988 ] present the watchdog ... Lehmann [1 987 ] and by Reid [1 987 ] Issues related to trusting computer programs are discussed in Thompson [1 984 ] Discussions concerning UNIX security are offered by Grampp and M...

Ngày tải lên: 12/08/2014, 22:21

... [ 197 3] Other scheduling algorithms and extensions to previous algorithms were presented in Jensen et al [ 198 5], Lehoczky et al [ 198 9], Audsley et al [ 199 1], Mok [ 198 3], and Stoica et al [ 199 6] ... Steinmetz [ 199 5] and Leslie et al [ 199 6] Resource management for resources such as processing capability and memory buffers are discussed in Mercer et al [ 199 4] and Druschel and Pe...

Ngày tải lên: 12/08/2014, 22:21

... 64 bits, so a page still contains only 1,024 (10 bits' worth) of PDEs or PTEs Therefore, with 10 bits of top-level PDEs, 10 bits of second-level, 10 bits of page table, and 13 bits of page offset, ... |.||.:;f • : \ / pagetabte entry page ;: tabled:; :• ,,\ pagetable entry 102 3 : pagetable entry : page; : table 102 3 pagetable entry 102 3 • 4K page 4K page Figure 22.3 4K page Page...

Ngày tải lên: 12/08/2014, 22:21

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