NDLI: A greedy I/O scheduling method in the storage system of clusters

Content Provider	IEEE Xplore Digital Library
Author	Xinrong Zhou Tong Wei
Copyright Year	2003
Description	Author affiliation: Turku Centre for Comput. Sci., Finland (Xinrong Zhou)
Abstract	As the size of cluster becomes larger, the process ability of a cluster increases rapidly. Users will exploit this increased power to run scientific, physical and multimedia applications. These kinds of data-intensive applications require high performance storage subsystem. Parallel storage system such as RAID is widely used in today's clusters. In this paper, we bring out a "greedy" I/O scheduling method that utilizes Scatter and Gather operations inside the PCI-SCSI adapter to combine as many I/O operations within the same disk as possible. In this way we reduce the numbers of I/O operations and improve the performance of the whole storage system. After analyzing RAID control strategy, we find out that I/O commands' combination may also bring up data movement in memory and this kind of movement will increase the system's overhead. The experiment results in our real time operating environment show that a better performance can be achieved. The longer the data length is, the better improvement we can get, in some case, we can even get over 40% enhancement.
Sponsorship	IEEE Comput. Soc
Starting Page	712
Ending Page	717
File Size	413400
Page Count	6
File Format	PDF
ISBN	0769519199
DOI	10.1109/CCGRID.2003.1199437
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-12
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Grid computing
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