I have 2 Dell 710 servers, both running Xenserver 6.0 and both exhibiting extremely slow network throughput.
I have followed a plethora of guides, but they mostly relate to virtual driver settings on Win2k3.
Currently I peak around 1Mbps from a guest to machine external to the host.
Between guests on the same host I get around 800Mbps.
This makes me think it's a physical NIC driver issue on the Host.
The same slowness is evident with connection via DELL gigabit switch, Cisco gigabit switch and even through a 100Mbps Sonicwall port. Throughput rarely exceeds 1Mbps and if it does, it is by a pitiful amount.
I'm pretty much at my wits end and am contemplating a long weekend to switch everything over to VMWare.