is 40mbit/sec on 100mbit home router 'reasonable'?

[George Michaelson <ggm%apnic.net@localhost>]

I was unable to exceed 40mbit/sec on a home 4-router. ASUS WL500gp,  
lightly loaded otherwise. (migrating 250Gb, ftp, rsync, ssh, no real  
difference)
Maybe I expected too much, but I thought I'd get better than 40%  
utilization.

Thats NetBSD 5.0 both hosts, untuned. I did briefly visit the  
recommended tcp kernel buffer upswings, they didn't seem to make much  
difference.

Maybe the NMBCLUSTERS one, which requires a kernel rebuild would have  
been more useful?

But, OTOH, maybe I had too high expectations of this class of device.  
After all, it doesn't actually *have* a switch backplane, its all  
faked up by the host, as I understand it.

Anybody care to share more clue?

-G