|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| n | Each process
is allocated a fixed number of pages |
|||||||||||||||
| u | determined at
load time and depends on |
|||||||||||||||
| application type |
||||||||||||||||
| n | When a page
fault occurs: page frames |
|||||||||||||||
| considered
for replacement are local to the page- |
||||||||||||||||
| fault process |
||||||||||||||||
| u | the number of
frames allocated is thus constant |
|||||||||||||||
| u | previous
replacement algorithms can be used |
|||||||||||||||
| n | Problem:
difficult to determine ahead of time a |
|||||||||||||||
| good number
for the allocated frames |
||||||||||||||||
| u | if too low: page
fault rate will be high |
|||||||||||||||
| u | if too large:
multiprogramming level will be too low |
|||||||||||||||
