perf-test.sh

#!/bin/bash

choose_congestion_control="/proc/sys/net/ipv4/tcp_congestion_control"
ip=127.0.0.1

iperf -s
iperf_pid=$!

for i in $(ls /lib/modules/3.2.0-4-amd64/kernel/net/ipv4/tcp*); do 
	# transform the path from /lib/.../tcp_bic.ko to bic
	kernelname=${i##*/}
	kernelname=${kernelname##tcp_}
	kernelname=${kernelname%%.ko}
	if [[ "$kernelname" == "diag" ]]; then
		echo skipping
		continue
	fi

	echo "testing $kernelname"

# iperf will set on the socket, otherwise I'd need:
#	  echo $kernelname > $choose_congestion_control
	iperf -t5 -c $ip -Z $kernelname | tee $kernelname.txt
done

# since cubic is built-in, do that too
echo "testing cubic"
#echo cubic > $choose_congestion_control
iperf -t5 -c $ip -Z cubic | tee cubic.txt

kill $iperf_pid