원문정보
초록
영어
The mobile computing paradigm is becoming a reality due to the advent of mobile devices
such as, PDA and Smart Phones having wireless interface to WWW. As a result, the high-end
applications related to mobile multimedia and distributed digital contents have gained much
attention. However, the existing distributed and mobile file systems are not adequately
suitable to support such applications handling the challenges offered by mobile computing
systems. In this paper, the concept, design architecture and consistency model of Virtual
memory based Mobile Distributed File System (VMDFS) are proposed based on thin-mobileclient/
fat-server model. VMDFS creates the migrate-able virtual memory based mobile file
system on top of the disk file systems of remote servers employing dynamic frame-lock to
reduce network latency and to attain high-performance. An abstract mathematical model of
VMDFS is constructed and associated properties are evaluated. The kernel-level
implementation framework of VMDFS is illustrated based on Linux 2.4.22. The network
paging latencies for LAN, Wireless VPN and 2.5G GPRS are measured experimentally. The
results indicate that VMDFS is realizable.
목차
1. Introduction
2. Related Works
3. The VMDFS Architecture
3.1. File System Structure
4. The VMDFS Model
4.1. Definition of ◊
4.2. Definition of ⊥
4.3. Definition of ||
4.4. Definition of ci ||πVij
4.5. Definition of VMDFS
4.6. Properties of VMDFS Model
4.7. VMDFS Consistency Model
5. Implementation
5.1. Components of VMDFS
5.2. Network Paging Latency
6. Conclusions
7. References