Network slowdowns when migrates to DL580 G7 using Nexus 1000v.

Hi,

Any help, tip, will be helpfull. Thanks.

Problem information:
The network slowdowns starts to happen when more or less the eighth virtual machine is migrated to inside HP hardware DL580 G7 using Nexus 1000v, and any nic below.
Tests were done with a nic at a time, and the network slowdowns happened with all.

HP hardware DL580 G7
• NetXen HP NV375i Integrated Quad Port Multifunction Gigabit Server Adapter.
Driver: net-bnx2 2.1.12b.v50.3-1OEM.500.0.0.472560
• Broadcom Corporation NC382T PCI Express Dual Port Multifunction Gigabit Server Adapter.
Driver: net-nx-nic 5.0.626-3vmw.500.0.0.472560
• NetXen HP NC522SFP Dual Port 10Gbe Server Adapter.
Driver:

Best Regards.