I/O Buffer Cache Mechanism Based on the Frequency of File Usage

Author

Katakami, Tatsuya ; Tabata, Toshihiro ; Taniguchi, Hideo

Author_Institution

Grad. Sch. of Natural Sci. & Technol., Okayama Univ., Okayama

Volume

2

fYear

2008

fDate

11-13 Nov. 2008

Firstpage

76

Lastpage

82

Abstract

Most operating systems manage buffer caches for buffering I/O blocks, because I/O processing is slower than CPU processing. Application programs request I/O processing from files. In order to improve the performance of I/O processing, a buffer cache should be managed with regard to both blocks and files. This paper proposes an I/O buffer cache mechanism based on the frequency of file usage. This mechanism calculates the importance of each file. Then, blocks of important files are stored in a protected space. The blocks stored in the protected space are given priority for caching. We evaluated the proposed mechanism by kernel make processing. The results show that the proposed mechanism improves the processing time by 18 s (5.7%) as compared to the LRU algorithm.

Keywords

buffer storage; cache storage; operating systems (computers); buffer cache management; file usage; operating systems; Buffer storage; Conference management; File systems; Frequency; Information management; Information technology; Kernel; Operating systems; Protection; Technology management; application program; buffer cache; file;

fLanguage

English

Publisher

ieee

Conference_Titel

Convergence and Hybrid Information Technology, 2008. ICCIT '08. Third International Conference on

Conference_Location

Busan

Print_ISBN

978-0-7695-3407-7

Type

conf

DOI

10.1109/ICCIT.2008.107

Filename

4682217