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As described in Section 5.7, virtual memory uses a page table to track the mapping of virtual addresses to physical addresses. This exercise shows how this table must be updated as addresses are accessed. The following data constitute a stream of virtual byte addresses as seen on a system. Assume 4 KiB pages, a fourentry fully associative TLB, and true LRU replacement. If pages must be brought in from disk, increment the next largest page number. Decimal 4669 hex |2227 |13916 34587 |48870 | 12608 |49225 | Ox123d |0x08b3 0x365c 0x871b| 0xbee6 | 0x3140 |Oxc049 | TLB Physical Page Number Time Since Last Valid Tag Access 12 Ox7 4 Ox3 On4 Page table Physical Page or ln Disk Index Vald Disk Disk 4. 11 Disk Disk Disk 12 [10] <§5.7> For each access shown above, list • whether the access is a hit or miss in the TLB, • whether the access is a hit or miss in the page table, • whether the access is a page fault, • the updated state of the TLB.

As described in Section 5.7, virtual memory uses a page table to track the mapping of virtual addresses to physical addresses. This exercise shows how this table must be updated as addresses are accessed. The following data constitute a stream of virtual byte addresses as seen on a system. Assume 4 KiB pages, a fourentry fully associative TLB, and true LRU replacement. If pages must be brought in from disk, increment the next largest page number. Decimal 4669 hex |2227 |13916 34587 |48870 | 12608 |49225 | Ox123d |0x08b3 0x365c 0x871b| 0xbee6 | 0x3140 |Oxc049 | TLB Physical Page Number Time Since Last Valid Tag Access 12 Ox7 4 Ox3 On4 Page table Physical Page or ln Disk Index Vald Disk Disk 4. 11 Disk Disk Disk 12 [10] <§5.7> For each access shown above, list • whether the access is a hit or miss in the TLB, • whether the access is a hit or miss in the page table, • whether the access is a page fault, • the updated state of the TLB.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Chapter 5.16, Problem 1E Bookmarked Show all steps: ON As described in Section 5.7, virtual memory uses a page table to track the mapping of virtual addresses to physical addresses. This exercise shows how this table must be updated as addresses are accessed. The following data constitute a stream of virtual byte addresses as seen on a system. Assume 4 KiB pages, a fourentry fully associative TLB, and true LRU replacement. If pages must be brought in from disk, increment the next largest page number. Decimal 4669 49225 0x123d 0x08b3 0x365c |0x871b | 0xbee6 |0x3140 |0xc049 2227 13916 34587 48870 12608 hex TLB Physical Page Time Since Last Valid Tag Number Access 1. Oxb 12 1. Ox7 Ox3 6 3 Ox4 Page table Index Valid Physical Page or in Disk 1 Disk Disk 1. 4 1. 9 11 Disk 7 1. 4 Disk Disk 1. by 1 12 [10] <§5.7> For each access shown above, list • whether the access is a hit or miss in the TLB, • whether the access is a hit or miss in the page table, • whether the access is a page fault, • the updated state of the TLB. !!!
Transcribed Image Text:Chapter 5.16, Problem 1E Bookmarked Show all steps: ON As described in Section 5.7, virtual memory uses a page table to track the mapping of virtual addresses to physical addresses. This exercise shows how this table must be updated as addresses are accessed. The following data constitute a stream of virtual byte addresses as seen on a system. Assume 4 KiB pages, a fourentry fully associative TLB, and true LRU replacement. If pages must be brought in from disk, increment the next largest page number. Decimal 4669 49225 0x123d 0x08b3 0x365c |0x871b | 0xbee6 |0x3140 |0xc049 2227 13916 34587 48870 12608 hex TLB Physical Page Time Since Last Valid Tag Number Access 1. Oxb 12 1. Ox7 Ox3 6 3 Ox4 Page table Index Valid Physical Page or in Disk 1 Disk Disk 1. 4 1. 9 11 Disk 7 1. 4 Disk Disk 1. by 1 12 [10] <§5.7> For each access shown above, list • whether the access is a hit or miss in the TLB, • whether the access is a hit or miss in the page table, • whether the access is a page fault, • the updated state of the TLB. !!!
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