[Click] Click CPU load

[Roberto Riggio]

Hi everybody,

We are planning to build a small testbed based on the roofnet code.

In order to do some preliminary testing with the click/roofnet
architecture we decided to use some already available asus wl500g
wireless router running OpenWRT. 

This router doesn't uses a atheros chipset so I've made a couple of
changes to the click script in order to make roofnet work on top of a
device configured in adhoc mode.

Everything is working fine the nodes ping each other and they can reach
Internet. 

However if i try to run an Iperf session between to nodes the click
process reaches the 99% of the cpu time and the max throughput that I
can get is 4.6Mbps using TCP over a signle hop.

I've made the same test using some notebook reaching 20Mbps over the
single hop with the click process at the 20% of cpu time.

Do you have any idea about the reason the performance are so bad with
the Asus?

Thanks