I am running pfsense through virtualbox on a ubuntu 11.10 host.
It is an AMD 64 3500, with 2gb of ram. I have assigned pfsense 512mb of ram, and there are 2 dedicated NICs which are in bridge mode.
Now when pfsense is up and runnning it idles at %1-5 CPU usage in the pfsense. However when there is load from the ADSL2 Connection, which is only 16mb, the cpu usage goes to 100%.
On the host machine Virtualbox is only using about %30-45 cpu usage and the machine is only using about %50-60 cpu overall.
Both the em0 em1 interfaces use about the same cpu usage (%40-45 each) with the rest taken up by php etc.
I would have thought a AMD athlon 64bit 3500, even in virtualisation, would be more than enough to run on a small home network only dealing with a low mb ADSL connection?
There is no other load on the interfaces from the host machine.