DocumentCode
2909683
Title
Hit ratio of caching disk buffers
Author
Hospodor, Andy
Author_Institution
Inst. for Inf. Storage Technol., Santa Clara Univ., CA, USA
fYear
1992
fDate
24-28 Feb. 1992
Firstpage
427
Lastpage
432
Abstract
Hit ratio is the primary measure of disk cache buffer efficiency, and may be contrasted against cache overhead. A technique to calculate the lower bound of hit ratio based on cache overhead is presented. A method to calculate average hit ratio based on I/O tracing is also developed. Finally, an example is cited showing that a hit ratio as low as 14% will offer a performance improvement over similar disk drives equipped with noncaching buffers.<>
Keywords
buffer storage; magnetic disc storage; performance evaluation; average hit ratio; buffer efficiency; caching disk buffers; disk drives; performance; solid state disks; Buffer storage; Decoding; Delay; Disk drives; Disk recording; Legged locomotion; Magnetic heads; Optical buffering; Random access memory; Read-write memory;
fLanguage
English
Publisher
ieee
Conference_Titel
Compcon Spring '92. Thirty-Seventh IEEE Computer Society International Conference, Digest of Papers.
Conference_Location
San Francisco, CA, USA
Print_ISBN
0-8186-2655-0
Type
conf
DOI
10.1109/CMPCON.1992.186750
Filename
186750
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