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The Five-minute Rule 20 Years Later (and how flash memory changes the Rules).

The article discusses a concept in computer science called the "five-minute" rule, which was developed by computer scientists Jim Gray and Gianfranco Putzolu in 1987. The rule addresses the trade-off between computer memory and input/output (I/O) capacity, comparing the cost of holding a record, or...

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Published in:Communications of the ACM Vol. 52; no. 7; pp. 48 - 60
Main Author: GRAEFE, GOETZ
Format: Article
Published: Association for Computing Machinery Jul2009
Subjects:
Computer storage devices
Computer input-output equipment
Computer scientists
Gray, Jim
Putzolu, Gianfranco
Random access memory
Flash memory
Online Access:View this record in EBSCOhost
Summary:The article discusses a concept in computer science called the "five-minute" rule, which was developed by computer scientists Jim Gray and Gianfranco Putzolu in 1987. The rule addresses the trade-off between computer memory and input/output (I/O) capacity, comparing the cost of holding a record, or a page, permanently in memory with the cost of performing disk I/O each time the record is accessed. Other topics include the price of RAM (Random-Access Memory) used to hold a 1 KB record and the use of flash memory.