Title :
Study on Garbage Collection Schemes for Flash-Based Linux Swap System
Author :
Ko, Sohyang ; Jun, Seonsoo ; Kim, Kiyong ; Ryu, Yeonseung
Author_Institution :
Dept. of Comput. Software, Myongji Univ., Yongin
Abstract :
NAND flash memory based SSDs (solid state disks) have become an alternative storage device for future computer systems. Legacy operating system functionalities like file system and virtual memory system should be carefully re-designed since flash memory cannot be overwritten unless erased in advance. In this paper, we study the performance of garbage collection schemes when flash memory is used as the Linux swap storage. We have collected swap I/O traces from Linux kernel and performed trace-driven simulation. We found that Linux swap system must be re-designed in order to use flash memory as swap storage.
Keywords :
Linux; NAND circuits; flash memories; operating system kernels; virtual storage; Linux kernel; NAND flash memory; flash-based Linux swap system; garbage collection schemes; operating system functionalities; solid state disks; virtual memory system; Application software; Cleaning; Costs; File systems; Flash memory; Kernel; Linux; Operating systems; Software engineering; Solid state circuits; Flash memory; Garbage collection; linux swap system;
Conference_Titel :
Advanced Software Engineering and Its Applications, 2008. ASEA 2008
Conference_Location :
Hainan Island
Print_ISBN :
978-0-7695-3432-9
DOI :
10.1109/ASEA.2008.55
