I was pushing about 5.5 MBytes/sec through a 400mhz Axiomtek NA-0041B
(comes with 4 built-in realtek/rtl nics) and noticed that CPU usage was
at 73%. This is without any VPN overhead. Traffic was passing from LAN
to OPT1. I then enabled device polling and CPU usage went down to 0% -
1% during the same transfers.
I was rather surprised that a 400mhz system is barely able to keep up
with 5.5MBytes/sec without device polling since that is the default.
Has anyone else noticed this?