Title :
Performance Analysis of Virtual Disk System for Transparent Computing
Author :
Gao, Yuan ; Zhang, Yaoxue ; Zhou, Yuezhi
Author_Institution :
Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
Abstract :
TransCom is a transparent computing platform based on a virtual disk system that supports heterogeneous services of the operating platform and their above applications. In TransCom, OS and software which run in the client are stored on the centralized servers, while computing tasks are carried out by the clients, so the server is the bottleneck of the system performance. This paper analyzes the characteristics of its real usage workload and builds a queuing model to locate the system bottlenecks. According to the study, the disk is the primary bottleneck if the cache hit ratio is less than 90%, so an optimal cache arrangement policy is developed on both the server and the client, which aims to avoid most of the server disk accesses. Experiment results show that the appropriate cache arrangement can significantly improve the capability of the TransCom server.
Keywords :
cache storage; operating systems (computers); queueing theory; software performance evaluation; virtual storage; OS; TransCom server; cache hit ratio; heterogeneous services; operating platform; optimal cache arrangement policy; performance analysis; queuing model; system performance bottleneck; transparent computing platform; usage workload; virtual disk system; Analytical models; Databases; Servers; Software; Throughput; Time factors; Time measurement; cache arrangement; performance analysis; transparent computing; virtual storage system;
Conference_Titel :
Ubiquitous Intelligence & Computing and 9th International Conference on Autonomic & Trusted Computing (UIC/ATC), 2012 9th International Conference on
Conference_Location :
Fukuoka
Print_ISBN :
978-1-4673-3084-8
DOI :
10.1109/UIC-ATC.2012.104