Re: IpoIB transfer rate 70 mb/s......

I suspected about the server's PCI bus capabilities, so i replaced the poweredge r300 with a poweredge r710, installed the MHQH19-XTC into the x16 pci slot.....

I runned some tests off esxi, so i installed on each server fedora 20, i run the iperf test and this is the results......

[  3]  0.0-30.0 sec  2.58 GBytes   740 Mbits/sec

[  4]  0.0-30.0 sec  2.68 GBytes   768 Mbits/sec

[  5]  0.0-30.0 sec  2.51 GBytes   719 Mbits/sec

[  6]  0.0-30.0 sec  2.70 GBytes   773 Mbits/sec

[  8]  0.0-30.0 sec  2.68 GBytes   768 Mbits/sec

[ 10]  0.0-30.0 sec  2.77 GBytes   792 Mbits/sec

[  7]  0.0-30.0 sec  2.60 GBytes   745 Mbits/sec

[  9]  0.0-30.0 sec  2.48 GBytes   711 Mbits/sec

[SUM]  0.0-30.0 sec  21.0 GBytes  6.02 Gbits/sec

About the cables im using CINCH - QSPF+ (exactly this:

Cinch success at SC09: Showcased Cinch cables, Released QSFP+, and Participated in SCinet - Cinch Connectors