NDLI: The performance of protocols based on locks with ordered sharing

Content Provider	IEEE Xplore Digital Library
Author	Agrawal, D. El Abbadi, A. Lang, A.E.
Copyright Year	1989
Abstract	There is growing evidence that for a wide variety of database workloads and system configurations, locking-based concurrency control outperforms other types of concurrency control strategies. However, in the presence of increased data contention, locking protocols such as two-phase locking perform poorly. In this paper, we analyze a family of locking-based protocols that employ a new relationship between locks called ordered sharing. Using a centralized database simulation model, we demonstrate that these protocols exhibit comparable performance to that of traditional locking-based protocols when data contention is low, and they exhibit superior performance when data contention is high. Furthermore, we show that the performance of these protocols improves as resources become more plentiful. This is particularly significant because the performance of two-phase locking degrades as a result of data contention, not resource contention. Thus, introducing additional resources improves the performance of the proposed protocols, though it does not benefit two-phase locking significantly.<>
Sponsorship	IEEE IEEE Comput. Soc. Tech. Committee on Data Eng IEEE Computer Society
Starting Page	805
Ending Page	818
Page Count	14
File Size	1296293
File Format	PDF
ISSN	10414347
Volume Number	6
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protocols Transaction databases Concurrency control Database systems Concurrent computing Analytical models Degradation Control systems Laser mode locking Computer science
Content Type	Text
Resource Type	Article
Subject	Information Systems Computational Theory and Mathematics Computer Science Applications

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

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