This is my scenario:
-Workstation1: CPU i7-3770 / 16GB ram / Gigabyte Z77-D3H motherboard / Crucial CT256MX100SSD1 Sysyem Disk / Network adapter intel X540-T1 / Windows 7 64bit
-Workstation2: CPU i7-950 / 12GB ram / ASUS P6X58D-E motherboard / Crucial CT256MX100SSD1 Sysyem Disk / Network adapter intel X540-T1 / Windows 7 64bit
-Switcher HP procurve 2920 with two double 10 Gigabit ethernet expansion cards.
Both of the utp cables are Cat6 less than 15 metres and they are attached directly from each workstation to the hp switcher. Both of the network adapters appears to be linked at 10Gbps.
I´m testing network performance with iperf:
-workstation1: iperf -s
-workstation2: iperf -c <workstation1 ip>
I´m getting about 1Gbit per seccond instead of 10Gbit per second. So is there any step that i´m doing wrong? Any info about windows 7 network limitations? Thanks.
UPDATED - NTttcp tests
C:\NTttcp-v5.28\x64>NTttcp.exe -s -m 8,*,192.168.1.20 -l 128k -a 2 -t 15
Copyright Version 5.28
Network activity progressing...
Thread Time(s) Throughput(KB/s) Avg B / Compl ====== ======= ================ ============= 0 15.001 38661.956 131072.000 1 14.999 38257.484 131072.000 2 14.998 53989.065 131072.000 3 14.998 38336.845 131072.000 4 14.999 38086.806 131072.000 5 15.000 37563.733 131072.000 6 14.997 56408.082 131072.000 7 15.000 52292.267 131072.000 ##### Totals: ##### Bytes(MEG) realtime(s) Avg Frame Size Throughput(MB/s) =========== =========== ============== ================ 5179.250000 15.000 1459.696 345.283 >Throughput(Buffers/s) Cycles/Byte Buffers ===================== ============== ========== 2762.267 6.912 41434.000 >DPCs(count/s) Pkts(num/DPC) Intr(count/s) Pkts(num/intr) ============= ============= =============== ============== 13668.933 1.633 22030.933 1.013 >Packets Sent Packets Received Retransmits Errors Avg. CPU % ============= ================ =========== ====== ========== 3720525 334723 4364 0 10.179