If memory serves me right, Bruce A. Mah wrote:

> One old datapoint:  I measured about 25 Mbps between a couple of my
> machines going through the bridge plus a 100 Mbps switch (endhosts were
> 400 MHz P-II and 1 GHz P-III, both RELENG_5; bridge was a net4801
> running HEAD from about August).  It was 86 Mbps without the bridge.  I
> did not try any particular optimizations such as interface polling but I
> did disable INVARIANTS and WITNESS.

Upon some reflection, that doesn't really count as a datapoint.  It's
more like an anecdote.  :-)

Bruce.