Accuracy Evaluation of Application-level Performance Measurements

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Katarzyna Wac, Patrik Arlos, Markus Fiedler, Stefan Chevul, Lennart Isaksson, Richard Bults
Title: Accuracy Evaluation of Application-level Performance Measurements
Translated title: Utvärdering av prestanda mätningar på applikationsnivå
Conference name: Next Generation Internet Networks
Year: 2007
Pagination: 1-5
ISBN: 1-4244-0856-3
Publisher: IEEE
City: Trondheim
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Telecommunication Systems (*** Error ***)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
http://www.tek.bth.se/
Authors e-mail: katarzyna.wac@cui.unige.ch, patrik.arlos@bth.se, markus.fielder@bth.se, stefan.chevul@bth.se, lennart.isaksson@bth.se, bults@cs.utwente.nl
Language: English
Abstract: In many cases, application-level measurements can be the only way for an application to evaluate and adapt to the performance offered by the underlying networks. Applications perceive heterogeneous networking environments spanning over multiple administrative domains as black boxes being inaccessible for lower-level measurement instrumentation. However, application-level measurements can be inaccurate and differ significantly from the lower-level ones, amongst others due to the influence of the protocol stacks. In this paper we quantify and discuss such differences using the DPMI, with Measurement Points instrumented with DAG 3.5E cards for reference link-level measurements. We shed light on various impacts on timestamp accuracy of application-level measurements. Moreover, we quantify the accuracy of generating traffic with constant inter-packet-time. The latter is essential for an accurate emulation of application-level streaming traffic and thus for obtaining realistic end-to-end performance measurements.
Subject: Telecommunications\General
Note: http://cui.unige.ch/~wac/publications/
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