Title :
High rate packet transmission on 10 Gbit/s Ethernet LAN using commodity hardware
Author :
Bencivenni, Marco ; Carbone, Angelo ; Fella, Armando ; Galli, Domenico ; Marconi, Umberto ; Peco, Gianluca ; Perazzini, Stefano ; Vagnoni, Vincenzo ; Zani, Stefano
Author_Institution :
INFN-CNAF, Bologna, Italy
Abstract :
In the prospect of employing 10 gigabit Ethernet as networking technology for online systems and offline data analysis centers of high energy physics experiments, we performed a series of measurements with point-to-point data transfers over 10 gigabit Ethernet links, using the network interface cards mounted on the PCI-Express bus of commodity PCs both as transmitters and receivers. In real operating conditions, the maximum achievable transfer rate through a network link is not only limited by the capacity of the link itself, but also by those of the memory and peripheral buses and by the ability of the CPUs and of the operating system to handle packet processing and interrupts raised by the network interface cards in due time. Besides the TCP and UDP maximum data transfer throughputs, we also measured the CPU loads of the sender/receiver processes and of the interrupt and soft-interrupt handlers as a function of the packet size, either using standard or ldquojumbordquo Ethernet frames. In addition, we also performed the same measurements by simultaneously reading data from fibre channel links and forwarding them through a 10 gigabit Ethernet link, hence emulating the behavior of a disk server in a storage area network exporting data to client machines via 10 gigabit Ethernet.
Keywords :
high energy physics instrumentation computing; local area networks; network interfaces; operating systems (computers); peripheral interfaces; telecommunication links; transport protocols; Ethernet LAN; PCI-Express bus; TCP maximum data transfer throughput; UDP maximum data transfer throughput; commodity hardware; fibre channel link; gigabit Ethernet; high energy physics experiment; high rate packet transmission; memory bus; network interface card; network link; networking technology; offline data analysis; online system; operating system; packet processing; peripheral bus; soft-interrupt handler; Data analysis; Energy measurement; Ethernet networks; Hardware; Local area networks; Network interfaces; Operating systems; Performance evaluation; Personal communication networks; Transmitters;
Conference_Titel :
Real Time Conference, 2009. RT '09. 16th IEEE-NPSS
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4454-0
DOI :
10.1109/RTC.2009.5321915