TY - JOUR
T1 - A request distribution method for clustered VOD servers considering buffer sharing effects
AU - Cho, Dae Hyun
AU - Lee, Ki Yong
AU - Choi, Seung Lak
AU - Chung, Yon Dohn
AU - Kim, Myoung Ho
AU - Lee, Yoon Joon
N1 - Funding Information:
This research was supported by the Ministry of Information and Communication, Korea, under the College Information Technology Research Center Support Program, Grant Number IITA-2006-C1090-0603-0031.
PY - 2008/1
Y1 - 2008/1
N2 - The clustering of multiple video servers is a popular architecture for huge VOD systems. In a clustered VOD system, user requests are distributed among the video servers by the dispatcher. Each video server consists of independent disks and a local buffer memory. The buffer mechanism is recognized helpful to the improvement of the disk performance. However, its effects have not been effectively utilized so far for the request distribution strategies of the clustered VOD system. In this work, we investigate the effects of buffer sharing on the throughput of the clustered VOD system. And, based on the results, we propose a request distribution method for the clustered VOD system, where the buffer sharing effects are utilized for improving the system's throughput. By experiments, we evaluate the performance of the proposed method compared with the conventional request distribution methods.
AB - The clustering of multiple video servers is a popular architecture for huge VOD systems. In a clustered VOD system, user requests are distributed among the video servers by the dispatcher. Each video server consists of independent disks and a local buffer memory. The buffer mechanism is recognized helpful to the improvement of the disk performance. However, its effects have not been effectively utilized so far for the request distribution strategies of the clustered VOD system. In this work, we investigate the effects of buffer sharing on the throughput of the clustered VOD system. And, based on the results, we propose a request distribution method for the clustered VOD system, where the buffer sharing effects are utilized for improving the system's throughput. By experiments, we evaluate the performance of the proposed method compared with the conventional request distribution methods.
KW - Buffering
KW - Clustered VOD system
KW - Multimedia system
KW - Request distribution
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U2 - 10.1016/j.sysarc.2007.08.001
DO - 10.1016/j.sysarc.2007.08.001
M3 - Article
AN - SCOPUS:42949175554
SN - 1383-7621
VL - 54
SP - 335
EP - 346
JO - Journal of Systems Architecture
JF - Journal of Systems Architecture
IS - 1-2
ER -