A first look at 100 Gbps LAN technologies, with an emphasis on future DAQ applications

Adam Otto*, Daniel Hugo Cámpora Pérez, Niko Neufeld, Rainer Schwemmer, Flavio Pisani

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


The LHCb experiment is preparing a major upgrade, during long shutdown 2 in 2018, of both the detector and the data acquisition system. A system capable of transporting up to 50 Tbps of data will be required. This can only be achieved in a manageable way using 100 Gbps links. Such links recently became available also in the servers, while they have been available between switches already for a while. We present first measurements with such links using standard benchmarks and using a prototype event-building application. We analyse the CPU load effects by using Remote DMA technologies, and we also show comparison with previous tests on 40G equipment.
Original languageEnglish
Article number052030
Number of pages7
JournalJournal of Physics: Conference Series
Issue number5
Publication statusPublished - 1 Dec 2015
Externally publishedYes

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