A computer system consists of hardware, system programs, and application programs figs 4

A computer system consists of hardware, system programs, and application programs figs 1

A computer system consists of hardware, system programs, and application programs figs 1

... program and data User program and data Operating System Address 0xFFFFFFFF Limit Base 0 (a) User-2 data User-1 data User program Operating System Base-2 Limit-2 Limit-2 Limit-1 Base-2 Base-1 (b) Limit-1 Base-1 ... model in a distributed system. Banking system Airline reservation Operating system Web browser Compilers Editors Application programs Hardware System progr...
Ngày tải lên : 28/04/2014, 16:35
  • 30
  • 388
  • 0
A computer system consists of hardware, system programs, and application programs figs 2

A computer system consists of hardware, system programs, and application programs figs 2

... of a global vari- able. Thread 1's code Thread 2's code Thread 1's stack Thread 2's stack Thread 1's globals Thread 2's globals Fig. 2-17. Threads can have private ... equal. Now we are engaged in a great civil war testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battlefield of t...
Ngày tải lên : 28/04/2014, 16:35
  • 45
  • 346
  • 0
A computer system consists of hardware, system programs, and application programs figs 3

A computer system consists of hardware, system programs, and application programs figs 3

... Demonstration that the state in (a) is safe. A B C 3 2 2 9 4 7 Free: 3 (a) A B C 4 2 2 9 4 7 Free: 2 (b) A B C 4 4 4 2 9 7 Free: 0 (c) A B C 4 — 2 9 7 Free: 4 (d) Has Max Has Max Has Max Has Max Fig. ... A B C 3 2 2 9 4 7 Free: 3 (a) A B C 3 4 2 9 4 7 Free: 1 (b) A B C 3 0 –– 2 9 7 Free: 5 (c) A B C 3 0 7 9 7 Free: 0 (d) – A B C 3 0 0 9 – Free: 7 (e) Has...
Ngày tải lên : 28/04/2014, 16:35
  • 15
  • 306
  • 0
A computer system consists of hardware, system programs, and application programs figs 4

A computer system consists of hardware, system programs, and application programs figs 4

... page fault rate from the distance string. (a) The C vector. (b) F vector. (a) (b) (c) A0 A1 A2 A3 A4 A5 B0 B1 B2 B3 B4 B5 B6 C1 C2 C3 A0 A1 A2 A3 A4 A6 B0 B1 B2 B3 B4 B5 B6 C1 C2 C3 A0 A1 A2 A3 A4 A5 B0 B1 B2 A6 B4 B5 B6 C1 C2 C3 Age 10 7 5 4 6 3 9 4 6 2 5 6 12 3 5 6 Fig. ... function of the number of page frames assigned. Single address space 2 32 0 Data Progr...
Ngày tải lên : 28/04/2014, 16:35
  • 48
  • 291
  • 0
A computer system consists of hardware, system programs, and application programs figs 5

A computer system consists of hardware, system programs, and application programs figs 5

... 16 Data 2 048 288 ECC Mode 1 sector (2352 bytes) Frames of 588 bits, each containing 24 data bytes Symbols of 14 bits each 42 Symbols make 1 frame 98 Frames make 1 sector … … Fig. 5-21. Logical data ... 7 P0-3 Fig. 5-19. RAID levels 0 through 5. Backup and parity drives are shown shaded. Spiral groove Pit Land 2K block of user data Fig. 5-20. Recording structure of a compact d...
Ngày tải lên : 28/04/2014, 16:35
  • 52
  • 404
  • 0
A computer system consists of hardware, system programs, and application programs figs 6

A computer system consists of hardware, system programs, and application programs figs 6

... 1K 2K 4K 8K 16K Disk space utilization (percent) Data rate (KB/sec) Disk space utilization Data rate Block size (bytes) Fig. 6-20. The solid curve (left-hand scale) gives the data rate of a disk. ... block containing additional disk addresses Fig. 6-15. An example i-node. (a) games mail news work attributes attributes attributes attributes Data structure containing the attributes (b) ga...
Ngày tải lên : 28/04/2014, 16:35
  • 40
  • 324
  • 0
A computer system consists of hardware, system programs, and application programs figs 7

A computer system consists of hardware, system programs, and application programs figs 7

... processes, each displaying a movie. The frame rates and processing requirements per frame are different for each movie. A1 A1 A1 B1 B1 A2 A2 A2 A3 A3 B3 A4 A3 B3 A4 A5 B4 A5 B4 A4 A5 B1 B2 B2 B2 B3 B4 0 ... video server A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 (a) A0 A4 B0 B4 C0 C4 D0 D4 A1 A5 B1 B5 C1...
Ngày tải lên : 28/04/2014, 16:35
  • 26
  • 244
  • 0
A computer system consists of hardware, system programs, and application programs figs 8

A computer system consists of hardware, system programs, and application programs figs 8

... 2 Run-time system Operating system Shared memory Application Hardware Run-time system Operating system Application Hardware (b) Machine 1 Machine 2 Run-time system Operating system Shared memory Application Hardware Run-time system Operating system Application Hardware (c) Machine ... memory Application Hardware Run-time system Operating system Application Hard...
Ngày tải lên : 28/04/2014, 16:35
  • 44
  • 285
  • 0
A computer system consists of hardware, system programs, and application programs figs 9

A computer system consists of hardware, system programs, and application programs figs 9

... A cryptographically-protected capability. Goal Threat Data confidentiality Exposure of data Data integrity Tampering with data System availability Denial of service Fig. 9-1. Security goals and ... (b) After the procedure A has been called. (c) Buffer overflow shown in gray. (a) First page (in memory) Second page (not in memory) Page boundary A A A A A A (b) B A A A A...
Ngày tải lên : 28/04/2014, 16:35
  • 36
  • 348
  • 0
A computer system consists of hardware, system programs, and application programs figs 10

A computer system consists of hardware, system programs, and application programs figs 10

... parent Allocate child's stack and user area Fill child's user area from parent Allocate PID for child Set up child to share parent's text Copy page tables for data and stack Set up sharing ... fd is a file descriptor, and offset is a file offset. Page frame 3 Page frame 2 Page frame 1 Page frame 0 4. 3 BSD kernel Two-handed clock scans core map Main memory Core map e...
Ngày tải lên : 28/04/2014, 16:35
  • 40
  • 304
  • 0

Xem thêm

Từ khóa: