Title :
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
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;
Conference_Titel :
Parallel and Distributed Processing, 1994. Proceedings. Sixth IEEE Symposium on
Conference_Location :
Dallas, TX
Print_ISBN :
0-8186-6427-4
DOI :
10.1109/SPDP.1994.346115
