NDLI: DAFT: Disk geometry-Aware File system Traversal

Content Provider	IEEE Xplore Digital Library
Author	Fanglu Guo Tzi-cker Chiueh
Copyright Year	2009
Description	Author affiliation: Symantec Research Labs, Culver City, CA 90230 (Fanglu Guo; Tzi-cker Chiueh)
Abstract	Bulk file access is a read access to a large number of files in a file system. Example applications that use bulk file access extensively are anti-virus (AV) scanner, file-level data back-up agent, file system defragmentation tool, etc. This paper describes the design, implementation, and evaluation of an optimization to modern file systems that is designed to improve the read efficiency of bulk file accesses. The resulting scheme, called DAFT (Disk geometry-Aware File system Traversal), provides a bulk file access application with individual files while fetching these files into memory in a way that respects the disk geometry and thus is as efficient as it can be. We have successfully implemented a fully operational DAFT prototype, and tested it with commercial AV scanners and data back-up agents. Empirical measurements on this prototype demonstrate that it can reduce the elapsed time of enumerating all files in a file system by a factor of 5 to 15 for both fragmented and non-fragmented file systems on fast and slow disks.
Starting Page	1
Ending Page	10
File Size	169164
Page Count	10
File Format	PDF
ISBN	9781424449279
ISSN	15267539
DOI	10.1109/MASCOT.2009.5366627
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-21
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	File systems Prototypes Design optimization Geometry Assembly Cities and towns Testing Time measurement Insulation Information retrieval
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Daft: disk geometry-aware file system traversal.

NAMBA: location-aware collaboration system for shopping and meeting

Optimized compensation transaction for mobile telecommunication systems

Virtual traditional Japanese crafting system using JGNII in collaborative work environment

Distributed heterogeneous information systems

Networked portfolio with real time learning monitoring system

A real time talking port entrance current monitoring system

A real-time retrieval system using change aware distributed file system

Tourism service system based on ubiquitous location aware infrastructure

DAFT: Disk geometry-Aware File system Traversal

Similar Documents

Daft: disk geometry-aware file system traversal.

NAMBA: location-aware collaboration system for shopping and meeting

Optimized compensation transaction for mobile telecommunication systems

Virtual traditional Japanese crafting system using JGNII in collaborative work environment

Distributed heterogeneous information systems

Networked portfolio with real time learning monitoring system

A real time talking port entrance current monitoring system

A real-time retrieval system using change aware distributed file system

Tourism service system based on ubiquitous location aware infrastructure

DAFT: Disk geometry-Aware File system Traversal