Exploiting Exclusive Higher Resolution to Enhance Response Time of Embedded Flash Storage

Jung-Hoon Kim, Young-Sik Lee

2020

Abstract

NAND flash-based embedded storage may spend a long time on responding to a host storage system. Most of the flash translation layers (FTLs) of the embedded flash storage utilize a granular page-mapping level. However, they did not pay heed to page mapping management that causes the internal overhead of the page-level FTL. This overhead might damage the response time, especially after the random writes to the embedded flash storage. In this paper, we propose a novel method to reduce the internal overhead related to the page mapping write. This method exploits a virtually-shrunk segment exclusively to the page mapping table, which is implemented by our mapping-segmented flash translation layer (MSFTL). One mapping segment is intrinsically composed of consecutive page mappings smaller in size than a logical page of the host system. As a result, MSFTL drastically reduces the amount of page mapping data written and therefore improves both the average and worst response time compared with the fine-granularity page-level FTLs.

Paper Citation

in Harvard Style

Kim J. and Lee Y. (2020). Exploiting Exclusive Higher Resolution to Enhance Response Time of Embedded Flash Storage.In Proceedings of the 15th International Conference on Software Technologies - Volume 1: ICSOFT, ISBN 978-989-758-443-5, pages 470-477. DOI: 10.5220/0009859804700477

in Bibtex Style

@conference{icsoft20,
author={Jung-Hoon Kim and Young-Sik Lee},
title={Exploiting Exclusive Higher Resolution to Enhance Response Time of Embedded Flash Storage},
booktitle={Proceedings of the 15th International Conference on Software Technologies - Volume 1: ICSOFT,},
year={2020},
pages={470-477},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0009859804700477},
isbn={978-989-758-443-5},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 15th International Conference on Software Technologies - Volume 1: ICSOFT,
TI - Exploiting Exclusive Higher Resolution to Enhance Response Time of Embedded Flash Storage
SN - 978-989-758-443-5
AU - Kim J.
AU - Lee Y.
PY - 2020
SP - 470
EP - 477
DO - 10.5220/0009859804700477