Now that you can see what's going on, how could you improve FreeBSD's network performance? There's a simple rule of thumb when considering optimizing: don't. Network performance is generally only limited by your hardware. On the other hand, many applications cannot process data as quickly as your network can. If you think that you need to optimize your performance, you're probably looking in the wrong spot. Check Chapter 19 for hints on investigating performance bottlenecks.
Generally speaking, network performance should be adjusted only when you experience network problems. This means that you should have output from
netstat -m or
netstat -s indicating that the kernel is having resource problems. If the kernel starts ...