We report on measurements performed to test the reliability of high rate data transmission over copper Gigabit Ethernet for the LHCb online system. High reliability of such transmissions will be crucial for the functioning of the software trigger layers of the LHCb experiment, at the CERN’s LHC accelerator. The technological challenge in the system implementation consists of handling the expected high data throughput of event fragments using, to a large extent, commodity equipment. We report on performance evaluations of the main components involved in data transmission: the operating system (the latest kernel versions of Linux), the transmission error rates, the frame drops and the DMA transfers over PCI. Three different platforms have been used.
A. BARCZYK, D. BORTOLOTTI, A. CARBONE, J.-P. DUFEY, GALLI D., B. GAIDIOZ, et al. (2006). High Rate Packets Transmission on Ethernet LAN Using Commodity Hardware. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 53(3), 810-816 [10.1109/TNS.2006.874546].
High Rate Packets Transmission on Ethernet LAN Using Commodity Hardware
CARBONE, ANGELO;GALLI, DOMENICO;GREGORI, DANIELE;VAGNONI, VINCENZO MARIA
2006
Abstract
We report on measurements performed to test the reliability of high rate data transmission over copper Gigabit Ethernet for the LHCb online system. High reliability of such transmissions will be crucial for the functioning of the software trigger layers of the LHCb experiment, at the CERN’s LHC accelerator. The technological challenge in the system implementation consists of handling the expected high data throughput of event fragments using, to a large extent, commodity equipment. We report on performance evaluations of the main components involved in data transmission: the operating system (the latest kernel versions of Linux), the transmission error rates, the frame drops and the DMA transfers over PCI. Three different platforms have been used.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
