Ipref
53 down vote accepted
I use iperf. It's a client server arrangement in that you run it in server mode at one end and connect to its from another computer on the other side of the network.
One both machines run:
sudo apt-get install iperf
Then on Computer A:
iperf -s
And on Computer B:
iperf -c <address of Computer A>
On the client machine, you'll see something like this:
oli@bert:~$ iperf -c tim
Client connecting to tim, TCP port 5001 TCP window size: 16.0 KByte (default)
[ 3] local 192.168.0.4 port 37248 connected with 192.168.0.5 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.04 GBytes 893 Mbits/sec
Of course, if you're running a firewall on the server machine, you'll need to allow connections on port 5001 or change the port with the -p flag.