TY - JOUR
T1 - Accuracy of link capacity estimates using passive and active approaches with CapProbe
AU - Kapoor, Rohit
AU - Chen, Ling Jyh
AU - Sanadidi, M. Y.
AU - Gerla, Mario
PY - 2004
Y1 - 2004
N2 - CapProbe is an inexpensive and accurate means to estimate capacity. CapProbe combines both dispersion and end-to-end delay to estimate the capacity of the narrowest link on a path. We evaluate in this paper the accuracy of CapProbe estimation, and its dependence on end systems speed, packet sizes, narrow link speeds, and other system parameters. We test kernel and user level implementations of CapProbe and find the kernel implementation to be much more accurate. We also evaluate through experiments the effect of probing packet size on the accuracy of CapProbe estimation. Finally, we explore the idea of a "passive CapProbe" within the context of a TCP flow. Passive here means that the dispersion and delay observed for the TCP flow data and ACK packets, without introducing any additional probing packets. We test active and passive versions of CapProbe with TCP. The active version is found to produce more accurate capacity estimates than the passive version.
AB - CapProbe is an inexpensive and accurate means to estimate capacity. CapProbe combines both dispersion and end-to-end delay to estimate the capacity of the narrowest link on a path. We evaluate in this paper the accuracy of CapProbe estimation, and its dependence on end systems speed, packet sizes, narrow link speeds, and other system parameters. We test kernel and user level implementations of CapProbe and find the kernel implementation to be much more accurate. We also evaluate through experiments the effect of probing packet size on the accuracy of CapProbe estimation. Finally, we explore the idea of a "passive CapProbe" within the context of a TCP flow. Passive here means that the dispersion and delay observed for the TCP flow data and ACK packets, without introducing any additional probing packets. We test active and passive versions of CapProbe with TCP. The active version is found to produce more accurate capacity estimates than the passive version.
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M3 - Conference article
AN - SCOPUS:10844228255
VL - 2
SP - 1085
EP - 1090
JO - Proceedings - International Symposium on Computers and Communications
JF - Proceedings - International Symposium on Computers and Communications
SN - 1530-1346
T2 - Proceedings - ISCC 2004, Ninth International Symposium on Computers and Communications
Y2 - 28 June 2004 through 1 July 2004
ER -