3. The following data constitutes a stream of virtual addresses as seen on a system:1793, 5632, 7168, and 5089. Assume 1 KB pages, a 2-entry fully associative TLB, and true LRU replacement denoted by a bit called LRU where LRU bit 1 signifies most recently used entry. If pages must be brought in from disk, increment the next largest page number. Following are the binary representation of the virtual addresses: 1793 → 11100000001 5632 → 1011000000000 (20 points) 7168 → 1110000000000 5089 → 1001111100001 a) Given the address stream mentioned above, and the initial TLB and Page Table states provided below, show the different states of the TLB as the address are referenced in the table provided. List for each reference if it is a hit in the TLB, a hit in the page table, or a page fault in the relevant field. Page Table PP or Disk Disk Valid TLB 1 8 Valid Tag PPN LRU Disk 1 1 1 1 1 4 1 6 Disk 1 2 VA VPN PPN H/M TLB TLB TLB TLB Valid Tag PPN LRU 1793 5632 7168 5089
3. The following data constitutes a stream of virtual addresses as seen on a system:1793, 5632, 7168, and 5089. Assume 1 KB pages, a 2-entry fully associative TLB, and true LRU replacement denoted by a bit called LRU where LRU bit 1 signifies most recently used entry. If pages must be brought in from disk, increment the next largest page number. Following are the binary representation of the virtual addresses: 1793 → 11100000001 5632 → 1011000000000 (20 points) 7168 → 1110000000000 5089 → 1001111100001 a) Given the address stream mentioned above, and the initial TLB and Page Table states provided below, show the different states of the TLB as the address are referenced in the table provided. List for each reference if it is a hit in the TLB, a hit in the page table, or a page fault in the relevant field. Page Table PP or Disk Disk Valid TLB 1 8 Valid Tag PPN LRU Disk 1 1 1 1 1 4 1 6 Disk 1 2 VA VPN PPN H/M TLB TLB TLB TLB Valid Tag PPN LRU 1793 5632 7168 5089
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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