extreme network latency

[Richard Nyberg]

> For better performance, you can put the if_emx_load="YES" in
> loader.conf.  However, em0 will become emx0 after loading that module,
> so make sure that your rc.conf and pf.conf are also updated ;)

It turned out hw.re.msi.enable="1" did not work so well. re0 simply
stopped doing anything after a while. My current configuration uses re
and emx, both without polling. This works great since they end up
using different interrupts with emx instead of em.

Thanks for all your help,
-Richard