Title :
Optimization of event-building implementation on top of gigabit Ethernet
Author :
Gaidioz, Benjamin ; Barczyk, Artur ; Neufeld, Niko ; Jost, Beat
Author_Institution :
Eur. Organ. for Nucl. Res., CERN, Geneva
Abstract :
LHCb is implementing event-building over a gigabit Ethernet switched network. One component of the data acquisition network is a gateway PC which role is to gather data packets from data sources, rebuild events and forward them to computing nodes for trigger algorithms. In this article, we concentrate on the implementation of this component as a software running on a Linux system. We describe in details implementation choices and details of the operating system kernel which permitted us to achieve a higher performance and ensure a higher predictability of the system
Keywords :
Linux; data acquisition; high energy physics instrumentation computing; internetworking; local area networks; operating system kernels; packet switching; particle accelerators; telecommunication switching; LHCb; Linux system; computing node; data acquisition network; data packet; data source; gateway PC; gigabit Ethernet switched network; operating system kernel; trigger algorithm; Collaborative software; Computer architecture; Computer networks; Data acquisition; Delay; Detectors; Ethernet networks; Kernel; Linux; Operating systems;
Conference_Titel :
Real Time Conference, 2005. 14th IEEE-NPSS
Conference_Location :
Stockholm
Print_ISBN :
0-7803-9183-7
DOI :
10.1109/RTC.2005.1547457