Nehalem network performance

[Michael Cronenworth]

Kelvin Ku wrote:
> My question is this: has anyone experienced performance degradation running a
> UDP-consuming application after moving to a Nehalem-based system? We have yet
> to identify whether the culprit is the hardware, the OS, or the combination of
> the two. However, note that our app works fine on the 5150 system running F11
> that I mentioned above.

Unfortunately I don't do huge gb/sec multicasting, but I do have a 
Supermicro X8SIL-F (with 82574L dual ports) on F11.

If you can create a simple test case that can reproduce the packet drops 
that would be helpful.