nForce搞啥...
http://www.wlug.org.nz/NForce2Notes
"Network
The network controller on nForce2 based boards only works with a binary driver called nvnet that is supplied by nvidia in the package above. This seems to work fine and gives reasonable performance.
If you're using kernel 2.6, you will have to patch the NVidia source to make nvnet run.
See also ForcedEth, a reverse engineered open source ethernet driver for the onboard NVIDIA lan.
Note with regard to network performance
Sometimes you'll notice, when doing large transfers over your LAN, that your CPU usage goes through the roof and eth0 generates up to 500,000 interrupts a second. The nvnet driver is to blame; you can either load the module with 'optimizations=1' to optimize for CPU usage instead of throughput (interestingly, this doesn't seem to affect throughput at all), or you can load forcedeth, which makes it all go away. forcedeth should be included in 2.4.24+ and is within 2.6.3+."