One of my actual projects uses a USB-Ethernet (LAN9512) interface. So I am interested in the real speed for this combination.
On the embedded device I used netcat with the following parameters:
nc -l -p 1234 | dd of=/dev/null
And on the host side I used netcat with:
dd if=/dev/urandom bs=4096 count=100000 | nc host.tld 1234
For the different counts I got the following numbers
| count | duration | speed |
|---|---|---|
| 1000 | 1 s | 4.1 MB/s |
| 10000 | 10.8 s | 3.8 MB/s |
| 100000 | 108 s | 3.8 MB/s |
| 1000000 | 1092 s | 3.7 MB/s |
Okay, the last test copied 4.1 GB and lasted 18 minutes.
