Optimization of the file access method in content-addressable database access machine (CADAM)

Authors:
Sadayuki Hikita;Haruaki Yamazaki;Kiyoshi Hasegawa;Yutaka Matsushita
Affiliations:
OKI Electric Industry Co., Ltd., Research Laboratory, Tokyo, Japan;OKI Electric Industry Co., Ltd., Research Laboratory, Tokyo, Japan;OKI Electric Industry Co., Ltd., Research Laboratory, Tokyo, Japan;OKI Electric Industry Co., Ltd., Research Laboratory, Tokyo, Japan
Venue:
AFIPS '81 Proceedings of the May 4-7, 1981, national computer conference
Year:
1981

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Abstract

The design of the database machine CAD AM with an efficient file access mechanism is presented. CAD AM can be used widely for various applications cost-effectively. For this purpose, the functions of database systems are distributed over three basic components, and a conventional magnetic disk device instead of a disk attached with microprocessors and logic circuits is used. One of the most important points in designing CAD AM with high throughput is to minimize the time for transferring data from the disk to the cache memory. We analyze the optimal size of physical access unit between them for various applications in order to show that the size should be adjustable.