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Performance Trade-Off of File System between Overwriting and Dynamic Relocation on a Solid State Drive
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hyun, Choulseung Kwon, Hunki Kim, Jaeho Byun, Eujoon Choi, Jongmoo Lee, Donghee |
| Copyright Year | 2008 |
| Abstract | Most file systems overwrite modified file data and metadata in their original locations, while the Log-structured File System (LFS) dynamically relocates them to other locations. We design and implement the Evergreen file system that can select between overwriting or relocation for each block of a file or metadata. Therefore, the Evergreen file system can achieve superior write performance by sequentializing write requests (similar to LFS-style relocation) when space utilization is low and overwriting when utilization is high. Another challenging issue is identifying performance benefits of LFS-style relocation over overwriting on a newly introduced SSD (Solid State Drive) which has only Flash-memory chips and control circuits without mechanical parts. Our experimental results measured on a SSD show that relocation outperforms overwriting when space utilization is below 80% and vice versa. Keywords—Evergreen File System, Overwrite, Relocation, Solid State Drive. |
| Starting Page | 701 |
| Ending Page | 706 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| Volume Number | 2 |
| Alternate Webpage(s) | http://waset.org/publications/9736/performance-trade-off-of-file-system-between-overwriting-and-dynamic-relocation-on-a-solid-state-drive |
| Alternate Webpage(s) | http://www.waset.org/journals/waset/v39/v39-68.pdf |
| Alternate Webpage(s) | http://www.waset.org/journals/waset/v15/v15-68.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
