Title :
Non-intrusive estimation of Web server delays
Author :
Hall, James ; Pratt, Ian ; Leslie, Ian
Author_Institution :
Comput. Lab., Cambridge Univ., UK
Abstract :
We introduce a novel passive network monitoring architecture which enables us to capture and integrate data from different levels of the protocol stack using a probe which can be placed at any arbitrary point in the network. We subject the data gathered to off-line analysis and show how, by modelling the dynamics of the protocols observed, we are able to extract information which would not be available using existing means. We show how the technique can be used to passively measure Web server response latency. Experiments are described which use artificially generated loads to validate the techniques used, and results obtained from the observation of real traffic are presented
Keywords :
Internet; computerised monitoring; delay estimation; file servers; performance evaluation; protocols; telecommunication traffic; GNU/Linux operating system; Web server delays; nonintrusive estimation; off-line data analysis; passive network monitoring architecture; probe; protocol dynamics modelling; protocol stack; response latency measurement; traffic; Bandwidth; Data mining; Delay estimation; Monitoring; Network servers; Passive networks; Probes; Protocols; Telecommunication traffic; Web server;
Conference_Titel :
Local Computer Networks, 2001. Proceedings. LCN 2001. 26th Annual IEEE Conference on
Conference_Location :
Tampa, FL
Print_ISBN :
0-7695-1321-2
DOI :
10.1109/LCN.2001.990790