Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Chapter 9.3, Problem 9.2PP
Program Plan Intro
Page table entries (PTEs):
A page table is a collection of page table entries. In the virtual address space, each page has a page table entries at a fixed offset.
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Students have asked these similar questions
Problem 0. The following table gives some of the parameters for a number of different hardware
caches. Fill in the table with the values of the missing parameters. Recall that m is the number of
physical address bits, C is the cache size in bytes, B is the block size in bytes, E is the associativity,
i.e., lines per set, S is the number of sets, t is the number of tag bits, s is the number of set index
bits, and b is the number of block offset bits.
Cache m
48
32030
(b)
48
32
24
24
C
B
E
16384 32 16
32768 64
65536 128
512 32
1024
8
8
4
14
1
4
S
b
S
t
5. Suppose that a machine has 38-bit virtual addresses and 32-bit physical addresses.
a) What is the main advantage of a multilevel page table over a single-level one?
b) With a two-level page table, 16KB pages, and 4-byte entries,
i.
How many bits should be allocated for the top-level page table field?
ii.
How many bits should be allocated for the next level page table field?
Q.No.8: In paging (given
diagram), for CPU request
there are two access time one
for accessing page table and
one for physical memory
access.
physical
address f0000..0000
logical
address
CPU
a) How should we minimize
this access time? Redraw
1111...1111
the figure.
b) Formulate the formula for
Effective Access Time.
c) Calculate
Access Time (EAT) by
assuming the Hit ratio (a )
the Effective
physical
memory
85% and 95%. Cache
page table
Access Time (ɛ) is 20
microsecond and Memory
Access Time (T) is 100
microsecond.
Chapter 9 Solutions
Computer Systems: A Programmer's Perspective (3rd Edition)
Ch. 9.2 - Prob. 9.1PPCh. 9.3 - Prob. 9.2PPCh. 9.6 - Prob. 9.3PPCh. 9.6 - Prob. 9.4PPCh. 9.8 - Practice Problem 9.5 (solution page 882) Write a C...Ch. 9.9 - Prob. 9.6PPCh. 9.9 - Prob. 9.7PPCh. 9.9 - Prob. 9.8PPCh. 9.9 - Prob. 9.9PPCh. 9.9 - Prob. 9.10PP
Ch. 9 - Prob. 9.11HWCh. 9 - Repeat Problem 9.11 for the following address....Ch. 9 - Repeat Problem 9.11 for the following address....Ch. 9 - Given an input file hello.txt that consists of the...Ch. 9 - Determine the block sizes and header values that...Ch. 9 - Prob. 9.16HWCh. 9 - Prob. 9.17HWCh. 9 - Prob. 9.18HWCh. 9 - Prob. 9.19HWCh. 9 - Write your own version of malloc and free, and...
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