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Vectored read: Exploiting the read performance of hybrid NAND flash

Title
Vectored read: Exploiting the read performance of hybrid NAND flash
Authors
Seunghwan H.Sehwan L.Sungyong A.Hyokyung B.Kern K.
Ewha Authors
반효경
SCOPUS Author ID
반효경scopus
Issue Date
2008
Journal Title
Proceedings - 14th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2008
Indexed
SCOPUS scopus
Abstract
OneNAND flash is a NAND based hybrid flash memory which offers much better read/write performance and other functionalities than standard NAND flash memory. Because of its superior read performance, OneNAND flash became the most promising storage solution for implementing high performance mobile device which adopts demand paging memory architecture. However, unfortunately, existing general purpose operating systems, such as Linux, fail to exploit the read performance of OneNAND flash because of a restriction imposed by their I/O architecture and device driver interface. This paper investigated the cause of such inability, and proposed the design of vectored read scheme for solving that problem. Implementation studies on Linux kernel shows that vectored read scheme reduces the block level read latency of OneNAND flash by up to 41% compared with commercial FTL device. It also proved its effectiveness in real-world applications by reducing page fault handling time by 28%. © 2008 IEEE.
DOI
10.1109/RTCSA.2008.47
ISBN
9780769533490
Appears in Collections:
엘텍공과대학 > 컴퓨터공학과 > Journal papers
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