paul new test centos64: Processor: 2 x AMD Opteron 6238 @ 2.60GHz (24 Cores), Motherboard: Supermicro H8DG6/H8DGi v1.0, Chipset: AMD nee ATI RD890 + SB7x0/SB8x0/SB9x0, Memory: 259072MB, Disk: 60GB INTEL SSDSC2CW06 + 120GB INTEL SSDSC2CW12 + 13999GB MR9271-4i, Graphics: Matrox s MGA G200eW WPCM450, Monitor: DELL 1901FP, Network: Intel 82576 Gigabit Connection OS: CentOS 6.4, Kernel: 2.6.32-358.11.1.el6.x86_64 (x86_64), Display Driver: vesa 2.3.0, Compiler: GCC 4.4.7 20120313, File-System: ext4 Loopback TCP Network Performance Time To Transfer 10GB Via Loopback Seconds < Lower Is Better centos64 . 36.29 |=============================================================