Abstract
A performance model is used for studying distributed Web systems. Performance evaluation is done by obtaining load test measurements. Queueing Petri Nets formalism supports modeling and performance analysis of distributed World Wide Web environments. The proposed distributed Web systems modeling and design methodology have been applied in the evaluation of several system architectures under different external loads. Furthermore, performance analysis is done to determine the system response time.
Highlights
Distributed Web Systems (DWS) development assumes that the systems consist of a set of distributed nodes
We develop Queueing Petri Net (QPN) models of DWS that allow the performance evaluation
Total response time is a sum of all individual response times of queues and Element/parameter FE queues BE queues
Summary
Distributed Web Systems (DWS) development assumes that the systems consist of a set of distributed nodes These systems provide up-to-date data within the set time frames. Groups of nodes (clusters) are organized in layers conducting predefined services. This approach makes it possible to check the response time and scale the system. An example of a DWS is a stock trading system [1] (as one class of Internet systems). In this system, it may be a requirement for certain positions to be bought or sold when market events occur. The response time specified as an average value is normally dictated by business not by the environment
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