How can I get the current network interface throughput statistics on Linux/UNIX? [closed]

Answer 1

I got another quick'n'dirty bash script for that:

#!/bin/bash
IF=$1
if [ -z "$IF" ]; then
        IF=`ls -1 /sys/class/net/ | head -1`
fi
RXPREV=-1
TXPREV=-1
echo "Listening $IF..."
while [ 1 == 1 ] ; do
        RX=`cat /sys/class/net/${IF}/statistics/rx_bytes`
        TX=`cat /sys/class/net/${IF}/statistics/tx_bytes`
        if [ $RXPREV -ne -1 ] ; then
                let BWRX=$RX-$RXPREV
                let BWTX=$TX-$TXPREV
                echo "Received: $BWRX B/s    Sent: $BWTX B/s"
        fi
        RXPREV=$RX
        TXPREV=$TX
        sleep 1
done

It's considering that sleep 1 will actually last exactly one second, which is not true, but good enough for a rough bandwidth assessment.

Thanks to @ephemient for the /sys/class/net/<interface>! :)

Answer 2

You can use iperf to benchmark network performance (maximum possible throughput). See following links for details:

http://en.wikipedia.org/wiki/Iperf

https://iperf.fr/

https://code.google.com/p/iperf/

Answer 3

• dstat - Combines vmstat, iostat, ifstat, netstat information and more
• iftop - Amazing network bandwidth utility to analyse what is really happening on your eth
• netio - Measures the net throughput of a network via TCP/IP
• inq - CLI troubleshooting utility that displays info on storage, typically Symmetrix. By default, INQ returns the device name, Symmetrix ID, Symmetrix LUN, and capacity.
• send_arp - Sends out an arp broadcast on the specified network device (defaults to eth0), reporting an old and new IP address mapping to a MAC address.
• EtherApe - is a graphical network monitor for Unix modeled after etherman. Featuring link layer, IP and TCP modes, it displays network activity graphically.
• iptraf - An IP traffic monitor that shows information on the IP traffic passing over your network.

More details: http://felipeferreira.net/?p=1194