教材全解_《操作系统概念》

题目	题型
Give an example that illustrates the problem with restarting the block move instruction (MVC) on the IBM 360/370 when the source	问答
Discuss the hardware support required to support demand paging.	问答
What is the copy-on-write feature and under what circumstances is it beneficial to use this feature? What is the hardware suppor	问答
A certain computer provides its users with a virtual-memory space of 232 bytes. The computer has 218 bytes of physical memory. T	问答
Assume we have a demand-paged memory. The page table is held in registers. It takes 8 milliseconds to service a page fault if an	问答
Assume that you are monitoring the rate at which the pointer in the clock algorithm (which indicates the candidate page for repl	问答
Discuss situations under which the least frequently used page-replacement algorithm generates fewer page faults than the least r	问答
Discuss situations under which the most frequently used page-replacement algorithm generates fewer page faults than the least re	问答
The VAX/ VMS system uses a FIFO replacement algorithm for resident pages and a free-frame pool of recently used pages. Assume th	问答
Consider a demand-paging system with the following time-measured utilizations: CPU utilization 20% Paging disk 9	问答
Suppose that a machine provides instructions that can access memory locations using the one-level indirect addressing scheme. Wh	问答
Suppose that your replacement policy (in a paged system) is to examine each page regularly and to discarding that page if it has	问答
A page-replacement algorithm should minimize the number of page faults. We can do this minimization by distributing heavily u	问答
Consider a demand-paging system with a paging disk that has an average access and transfer time of 20 milliseconds. Addresses ar	问答
What is the cause of thrashing? How does the system detect thrashing? Once it detects thrashing, what can the system do to elim	问答
Is it possible for a process to have two working sets? One representing data and another representing code? Explain.	问答
Consider the parameter A used to define the working-set window in the working-set model. What is the effect of setting A to a sm	问答
Assume there is an initial 1024 KB segment where memory is allocated using the Buddy System. Using Figure 9.27 as a guide, draw	问答
The slab allocation algorithm uses a separate cache for each different object type. Assuming there is one cache per object type,	问答
Consider a system that allocates pages of different sizes to its processes. What are the advantages of such a paging scheme? Wha	问答

题目

题型

Give an example that illustrates the problem with restarting the block move instruction (MVC) on the IBM 360/370 when the source

问答

Discuss the hardware support required to support demand paging.

问答

What is the copy-on-write feature and under what circumstances is it beneficial to use this feature? What is the hardware suppor

问答

A certain computer provides its users with a virtual-memory space of 232 bytes. The computer has 218 bytes of physical memory. T

问答

Assume we have a demand-paged memory. The page table is held in registers. It takes 8 milliseconds to service a page fault if an

问答