I was curious about which cards (or drivers) are Netqueue-enabled? I have searched (not very hard, mind you) for kernel driver options for the e1000e driver to no avail, but we also run Broadcoms using the bnx driver.

This is an item I would be curious to test?

>> This is fast, but even a software-only implementation of TSO can provide benefits.

I mentioned that even s/w LRO can give advantages. TSO is found on most NICs already but LRO is not there yet.

>> It also looks like NetQueue can be used in load balancing/traffic shaping, although I’m unclear exactly how as I didn’t understand what the presenter said.

Netqueue enabled cards have limited number of queues hence we need to give these queues to VM’s which need it the most. We do this by programming the queues based on the load of VMs. This is what I meant by load balancing the queues across VM’s.

We don’t get traffic shaping through netqueue but it does provide some isolation as the NIC can pull packets from each of the different TX queue one by one (e.g: in round robin manner).