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b. Assume a system that uses virtual memory with a single level page table and a translation lookaside buffer (TLB): i. Briefly explain the functionality of the TLB. ii. Assuming that the memory access time is 90ns, the time the operating system takes to search the TLB is 15ns, the TLB hit rate is 98%, the page fault rate is 20% and the time to fetch a page from the drive is 8ms. What is the average expected access time to main memory?

b. Assume a system that uses virtual memory with a single level page table and a translation lookaside buffer (TLB): i. Briefly explain the functionality of the TLB. ii. Assuming that the memory access time is 90ns, the time the operating system takes to search the TLB is 15ns, the TLB hit rate is 98%, the page fault rate is 20% and the time to fetch a page from the drive is 8ms. What is the average expected access time to main memory?

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
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b. Assume a system that uses virtual memory with a single level page table and a translation lookaside buffer (TLB): i. Briefly explain the functionality of the TLB. ii. Assuming that the memory access time is 90ns, the time the operating system takes to search the TLB is 15ns, the TLB hit rate is 98%, the page fault rate is 20% and the time to fetch a page from the drive is 8ms. What is the average expected access time to main memory?
Transcribed Image Text:b. Assume a system that uses virtual memory with a single level page table and a translation lookaside buffer (TLB): i. Briefly explain the functionality of the TLB. ii. Assuming that the memory access time is 90ns, the time the operating system takes to search the TLB is 15ns, the TLB hit rate is 98%, the page fault rate is 20% and the time to fetch a page from the drive is 8ms. What is the average expected access time to main memory?
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