Performance analysis of the XDAC disk array system

Author

Lee, Chiung-San ; Parng, Tai-Ming ; Lee, Jew-Chin ; Tsai, Cheng-Nan ; Farn, Kwo-Jean

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

1994

fDate

26-29 Oct 1994

Firstpage

620

Lastpage

627

Abstract

The paper presents an analytical model of a whole disk array architecture, XDAC, which consists of several major subsystems and features: the two-dimensional array structure; IO-bus with split transaction protocol; and cache for processing multiple I/O requests in parallel. Our modelling approach is based on a subsystem access time per request (SATPR) concept, in which we model for each subsystem the mean access time per disk array request. The model is fed with a given set of representative workload parameters and then used to conduct performance analysis for exploring the impact of fork/join synchronization as well as evaluating some architectural design issues of the XDAC system. Moreover, by comparing the SATPRs of subsystems, we can identify the bottleneck for performance improvements

Keywords

magnetic disc storage; performance evaluation; peripheral interfaces; protocols; storage management; IO-bus; XDAC disk array system; analytical model; architectural design issues; fork/join synchronization; mean access time per disk array request; modelling approach; multiple I/O requests; performance analysis; performance improvements; representative workload parameters; split transaction protocol; subsystem access time per request; two-dimensional array structure; whole disk array architecture; Analytical models; Bandwidth; Delay; Electrical equipment industry; Performance analysis; Predictive models; Protocols; Prototypes; Throughput; Time factors;

fLanguage

English

Publisher

ieee

Conference_Titel

Parallel and Distributed Processing, 1994. Proceedings. Sixth IEEE Symposium on

Conference_Location

Dallas, TX

Print_ISBN

0-8186-6427-4

Type

conf

DOI

10.1109/SPDP.1994.346115

Filename

346115