Using virtual storage technology in Linux Operating System

apage fault is triggered when the requested page is not in memory

which results in uncertain delay that cannot meet the requirements of real-time application.In addition

with the case of large amounts of data transmission between user mode and kernel mode

the generic Linux system cannot meet the demand of real-time applications.To solve these problems

this paper studies the Linux memory management firstly

and then using memory-mapped technology to solve the page fault problem in virtual memory management and to share a physical memory for user mode and kernel mode

which aim at meeting the requirements of real-time application.In the last part

this study will test and compare the performance of the memory mapping techniques to achieve real-time memory.The test results show that the technology can provide real-time memory for real-time applications effectively.