摘要
One of the significant tasks when designing a VoD(Video-on-Demand) system is to support as many simul-taneous streams as possible. Obviously, it is closely related to the storage subsystem. In this paper, we compare theperformance of the storage subsystems based on two different designs by simulation, one data placement policy is us-ing the technique of striping, and the other is simply placing a whole video only in one server. We find that, when da-ta is CBR (Constant-Bit-Rate) coded, the numbers of simultaneous streams respectively supported by the twoschemes are equal, but the latter can present better service.
One of the significant tasks when designing a VoD(Video-on-Demand) system is to support as many simultaneous streams as possible. Obviously, it is closely related to the storage subsystem. In this paper, we compare the performance of the storage subsystems based on two different designs by simulation, one data placement policy is using the technique of striping, and the other is simply placing a whole video only in one server. We find that, when data is CBR (Constant-Bit-Rate) coded, the numbers of simultaneous streams respectively supported by the two schemes are equal, but the latter can present better service.
出处
《计算机科学》
CSCD
北大核心
2002年第12期112-113,94,共3页
Computer Science
基金
国家863项目--应用服务器的运行
管理及调度技术(编号2001AA113050)
