TY - GEN
T1 - Accuracy evaluation of application-level performance measurements
AU - Wac, Katarzyna
AU - Arlos, Patrik
AU - Fiedler, Markus
AU - Chevul, Stefan
AU - Isaksson, Lennart
AU - Bults, Richard
PY - 2007/9/26
Y1 - 2007/9/26
N2 - 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 Distributed Passive Measurement Infrastructure (DPMI), with Measurement Points (MPs) instrumented with DAG 3.5E cards for the 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-times (IPTs). The latter is essential for an accurate emulation of application-level streaming traffic and thus for obtaining realistic end-to-end performance measurements.
AB - 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 Distributed Passive Measurement Infrastructure (DPMI), with Measurement Points (MPs) instrumented with DAG 3.5E cards for the 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-times (IPTs). The latter is essential for an accurate emulation of application-level streaming traffic and thus for obtaining realistic end-to-end performance measurements.
UR - http://www.scopus.com/inward/record.url?scp=34548814149&partnerID=8YFLogxK
U2 - 10.1109/NGI.2007.371190
DO - 10.1109/NGI.2007.371190
M3 - Article in proceedings
AN - SCOPUS:34548814149
SN - 1424408571
SN - 9781424408573
T3 - NGI 2007: 2007 Next Generation Internet Networks - 3rd EuroNGI Conference on Next Generation Internet Networks: Design and Engineering for Heterogeneity
SP - 1
EP - 5
BT - NGI 2007
T2 - NGI 2007: 2007 Next Generation Internet Networks - 3rd EuroNGI Conference on Next Generation Internet Networks: Design and Engineering for Heterogeneity
Y2 - 21 May 2007 through 23 May 2007
ER -