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Daniel Girtler, "Beschleunigung der PCAP-Datenaufzeichnung für 10Gbit Netzwerke," Bachelor Thesis, Institute of Computer Science, University of Innsbruck, January 2013. (Advisors: Falko Dressler and Felix Erlacher)


Goal of this work is to increase the performance of packet capturing in high speed networks and therefore also to increase the capturing performance of the monitoring toolkit Vermont. This monitoring toolkit is able to statistically analyze a packet stream and to generate packet flows up to 1Gbit/s. An earlier study about the performance of Vermont shows that many packets are lost after they are consumed by the network card because the kernel is not able to forward them fast enough. Based on this knowledge the packet way between the ethernet card and Vermont is accelerated. The first step is to modify the observer module of Vermont to use the PF_RING library instead of the PCAP library. Then sampling algorithms and different filters are implemented. A new developed packet capturing module called DNA is tested and Vermont is configured with it. The Intel 82599 network card, which is used for the performance tests, provides filters in the hardware itself so packets can be dropped before they are passed to the kernel. The implemented PF_RING library, the DNA module, the filters and the sampler are tested in the last part of the thesis. The results show that with the implementation of PF_RING more packets can be received. When applying the hardware filters the performance depends on how many packets are dropped by the filters. The best result can be received by applying the DNA module. Nevertheless it was not possible to receive all packets at speed of 10Gbit/s.

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Daniel Girtler

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    author = {Girtler, Daniel},
    title = {{Beschleunigung der PCAP-Datenaufzeichnung f{\"{u}}r 10Gbit Netzwerke}},
    advisor = {Dressler, Falko and Erlacher, Felix},
    institution = {Institute of Computer Science},
    location = {Innsbruck, Austria},
    month = {1},
    school = {University of Innsbruck},
    type = {Bachelor Thesis},
    year = {2013},

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