@article{(Open Science Index):https://publications.waset.org/pdf/9736, title = {Performance Trade-Off of File System between Overwriting and Dynamic Relocation on a Solid State Drive}, author = {Choulseung Hyun and Hunki Kwon and Jaeho Kim and Eujoon Byun and Jongmoo Choi and Donghee Lee and Sam H. Noh}, country = {}, institution = {}, 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.}, journal = {International Journal of Computer and Information Engineering}, volume = {2}, number = {3}, year = {2008}, pages = {701 - 706}, ee = {https://publications.waset.org/pdf/9736}, url = {https://publications.waset.org/vol/15}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 15, 2008}, }