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Priority scheduling in parallel I/O systems

DSpace at IIT Bombay

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Title Priority scheduling in parallel I/O systems
 
Creator VENUGOPAL, CR
RAO, SSSP
PATKAR, S
 
Subject priority queues
i/o systems
event-driven simulator
analytical model
priority scheduling
skewness
 
Description Performance of I/O intensive applications on a multiprocessor system depends mostly on the variety of disk access delays encountered in the I/O system. With increasing processor speeds and multiprocessor organization, the demands on the I/O subsystem have been steadly growing. To obtain a better system performance it is necessary to improve the I/O performance. An event-driven parallel I/O simulator has been developed to evaluate the impact of delays in the parallel I/O system. Many I/O intensive applications have more read access than the write. We have proposed read priority I/O scheduling algorithm to such application programs. We have found 3% to 10% improvement in the I/O system performance. The results of the I/O simulator has been validated by an analytical model that we have developed. Analytical model results fairly agrees with simulator. Our results indicated that priority based I/O scheduling could be benificial to overall performance.
 
Publisher C S R E A PRESS
 
Date 2011-10-27T09:04:38Z
2011-12-15T09:12:29Z
2011-10-27T09:04:38Z
2011-12-15T09:12:29Z
1999
 
Type Proceedings Paper
 
Identifier INTERNATIONAL CONFERENCE ON PARALLEL AND DISTRIBUTED PROCESSING TECHNIQUES AND APPLICATIONS, VOLS I-V, PROCEEDINGS,2554-2560
1-892512-15-7
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16244
http://hdl.handle.net/100/2697
 
Source International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 99),LAS VEGAS, NV,JUN 28-JUL 01, 1999
 
Language English