testing network performance

iperf_notes.sh

# install on ubuntu
apt-get install iperf

# The quality of a link can be tested as follows:
# - Latency (response time or RTT): can be measured with the Ping command.
# - Jitter (latency variation): can be measured with an Iperf UDP test.
# - Datagram loss: can be measured with an Iperf UDP test.

# udp test
iptables -I INPUT -p udp --dport 5001 -j ACCEPT # firewall exclusion
## server
iperf -s -u -i 1
## client
iperf -c hostname -u -f m -b 1100m -i 1

# tcp test
iptables -I INPUT -p tcp --dport 5001 -j ACCEPT # firewall exclusion
## server
iperf -s
## client
iperf -c hostname -f m -i 1

# icmp test + traceroute
mtr -r hostname
ping hostname

# see also:
# http://openmaniak.com/iperf.php