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|Title: ||Weibull mixture model to characterise end-to-end Internet delay at coarse time-scales|
|Authors: ||Hernández, José-Alberto|
Phillips, Iain W.
|Keywords: ||Performance modelling|
Weibull Mixture Model
|Issue Date: ||2006|
|Publisher: ||© IEE|
|Citation: ||HERNANDEAZ, J.-A. and PHILLIPS, I.W., 2006. Weibull mixture model to characterise end-to-end Internet delay at coarse time-scales. IEE Proceedings - Communications, 153(2), pp. 295-304|
|Abstract: ||Traces collected at monitored points around the Internet contain representative
performance information about the paths their probes traverse. Basic measurement
attributes, such as delay and loss, are easy to collect and provide a means to
both build and validate empirical performance models. However, the task of analysis
and extracting performance conclusions from measurements remains challenging.
Ideally, performance modelling aims to find a set of self-contained parameters to
describe, summarise, profile and easy display network performance status at a time.
This can result in the provision of meaningful information to address applications in
fault and performance management, hence providing input to network provisioning,
traffic engineering and performance prediction.
In this work we present the Weibull Mixture Model, a method to characterise endto-
end network delay measurements within a few simple, accurate, representative and
handleable parameters using a finite combination of Weibull distributions, with all the
aforementioned benefits. The model parameters are related tomeaningful delay characteristics,
such as average peak and tail behaviour in a daily profile, and can be optimally
found using an iterative algorithm known as Expectation Maximisation. Studies on
such parameter evolution can reflect current workload status and all possible network
events impacting packet dynamics, with further applications in network management.
In addition, a self-sufficient procedure to implement the Weibull Mixture Model is
presented, along with a set of matching examples to real GPS synchronised measurements
taken across the Internet, donated by RIPE NCC.|
|Description: ||This article was published in the journal, IEE Proceedings - Communications [© IEE]. The definitive version is available at: http://scitation.aip.org/IP-COM.|
|Appears in Collections:||Published Articles (Computer Science)|
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