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The five-minute rule ten years later, and other computer storage rules of thumb
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Source ACM SIGMOD Record archive
Volume 26 ,  Issue 4  (December 1997) table of contents
Pages: 63 - 68  
Year of Publication: 1997
ISSN:0163-5808
Authors
Jim Gray  Microsoft Research, San Francisco, CA
Goetz Graefe  Microsoft Research, San Francisco, CA
Publisher
ACM  New York, NY, USA
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Downloads (6 Weeks): 30,   Downloads (12 Months): 160,   Citation Count: 31
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ABSTRACT

Simple economic and performance arguments suggest appropriate lifetimes for main memory pages and suggest optimal page sizes. The fundamental tradeoffs are the prices and bandwidths of RAMs and disks. The analysis indicates that with today's technology, five minutes is a good lifetime for randomly accessed pages, one minute is a good lifetime for two-pass sequentially accessed pages, and 16 KB is a good size for index pages. These rules-of-thumb change in predictable ways as technology ratios change. They also motivate the importance of the new Kaps, Maps, Scans, and $/Kaps, $/Maps, $/TBscan metrics.


CITED BY  31