NDLI: Vector Read: Exploiting the Read Performance of Hybrid NAND Flash

Content Provider	IEEE Xplore Digital Library
Author	Seunghwan Hyun Sehwan Lee Sungyong Ahn Hyokyung Bahn Kern Koh
Copyright Year	2008
Description	Author affiliation: Sch. of Comput. Sci. & Eng., Seoul Nat. Univ., Seoul (Seunghwan Hyun; Sehwan Lee; Sungyong Ahn)
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%.
Starting Page	177
Ending Page	184
File Size	586360
Page Count	8
File Format	PDF
ISBN	9780769533490
ISSN	15332306
DOI	10.1109/RTCSA.2008.47
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-08-25
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance evaluation Flash memory Driver circuits Linux Memory architecture Mobile handsets Data structures
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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