Network Interface Card Gigabit Ethernet.pdf

Evaluation of Gigabit Ethernet with Java/HORB Y.Yasuy, H.Fujii, Y.Igarashi, E.Inoue, H.Kodama, A.Manabe, Y.Wataseyy, Y.Nagasakayyy, M.Nomachiyyyy, S.Hirano, H.Takagiyyyyy, K.Shudoyyyyyy, T.Araiyyyyyyy, L.Sarmentayyyyyyyy, C.Thomborson, R.Nicolescu and M.Ducyyyyyyyyy yHORB Open and High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305, Japan yyHigh Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305, Japan yyyDepartment of Electrical Engineering, Nagasaki Institute of Applied Science (NIAS), 536 Aba-machi, Nagasaki, 851-01 JAPAN yyyyResearch Center for Nuclear Physics(RCNP), 10-1 Mihogaoka, Ibaraki OSAKA 567-0047 JAPAN yyyyyHORB Open and Electrotechnical Laboratory (ETL), 1-1-4 Umezono, Tsukuba 305, Japan yyyyyyHORB Open and MuraokaLab., Department of Information and Computer Science, Waseda U., 1-104 Totsuka-machi, Shinjuku, Tokyo, 169-8050 yyyyyyyNetOne Systems Co.,Ltd., 2-2-8 Sphere Tower Tennoz, Higashi Shinagawa, Shinagawa-Ku, Tokyo 140-8621 Japan yyyyyyyyHORB Open and Laboratory for Computer Science, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A. yyyyyyyyyHORB Open and Computer Science Department, Auckland U., Private Bag 92109, Auckland, New Zealand Abstract. We have evaluated a high speed network, Gigabit Ethernet(GbE), with Java/HORB, which means Java and Java-based Distributed Object Technology(DOT). Next generation of data acquisition(DAQ) needs high speed network such as ATM and GbE for data transfer in Level 3 and/or Level 2 trigger of the DAQ at large scale DAQ system like Large Hadron Collider(LHC). When evaluating the basic parameters of GbE, we considered bottleneck of network performance such as TCP buer size, memory access speed, Maximum Transmission Unit(MTU) and so on. We used network tools called TTCP and Netperf and some Java benchmark programs for evaluating DOTs, namely, HORB, RMI and Voyager. Linux and Windows/NT operating systems Client Computer SW Network Interface Card Gigabit E