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Q4. Consider a paging system with the page table stored in memory. Answer and explain the following. a. If a memory reference takes 75 nanoseconds, how long does a paged memory reference take? b. If we add TLBs, and if 80 percent of all page-table references are found in the TLBs, what is the effective memory reference time? (Assume that finding a page-table entry in the TLBs takes 4 ns)

Q4. Consider a paging system with the page table stored in memory. Answer and explain the following. a. If a memory reference takes 75 nanoseconds, how long does a paged memory reference take? b. If we add TLBs, and if 80 percent of all page-table references are found in the TLBs, what is the effective memory reference time? (Assume that finding a page-table entry in the TLBs takes 4 ns)

Database System Concepts
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
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Please help me with this Operating Systems Principles homework:

Q4. Consider a paging system with the page table stored in memory. Answer and explain the following. a. If a memory reference takes 75 nanoseconds, how long does a paged memory reference take? b. If we add TLBs, and if 80 percent of all page-table references are found in the TLBs, what is the effective memory reference time? (Assume that finding a page-table entry in the TLBs takes 4 ns)
Transcribed Image Text:Q4. Consider a paging system with the page table stored in memory. Answer and explain the following. a. If a memory reference takes 75 nanoseconds, how long does a paged memory reference take? b. If we add TLBs, and if 80 percent of all page-table references are found in the TLBs, what is the effective memory reference time? (Assume that finding a page-table entry in the TLBs takes 4 ns)
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