Title:
METHOD OF DETECTING BOTTLENECK IN CONTENT DISTRIBUTION SYSTEM
Document Type and Number:
Japanese Patent JP3915743
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of detecting which of an empty area, TCP or hardware performance is responsible for a bottleneck in downloading a content from a server to a client.
SOLUTION: First, test data are transferred using an UDP, and if desired throughput cannot be obtained, it is determined the empty area is the bottleneck. Next, if the ratio for Th(n) of throughput Th(n+1) obtained by adding only one to make the number of TCP sessions (n) into (n+1) is larger than a predetermined value, it is decided that the protocol stack of the TCP causes the bottleneck. If the empty area and the TCP are not the bottleneck, and if the desired throughput cannot be obtained, it is decided that the hardware performance of a server or a client is the bottleneck.
Inventors:
Hiroshi Yamamoto
Application Number:
JP2003187475A
Publication Date:
May 16, 2007
Filing Date:
June 30, 2003
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04L12/70; (IPC1-7): H04L12/56
Domestic Patent References:
| JP2002073431A |
Other References:
山本浩司、川村宜伯,セッション確立時間の理論解析に基づくボトルネック切り分け方法,電子情報通信学会2003年通信ソサイエティ大会,2003年 9月10日
Attorney, Agent or Firm:
Keiichi Yamamoto
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