Linux IP Alias Benchmark

client.sh

#!/bin/bash

set -e

if [ $# -ne 3 ]; then
    echo "Usage: $0 <ADDR_TMPL> <N_WORKERS> <TIMEOUT>"
    exit 1
fi
ADDR_TMPL="$1"
N_WORKERS="$2"
TIMEOUT="$3"

start() {
    (PIDS=();
	for I in `seq 1 $N_WORKERS`; do
	    (iperf \
		--format k \
		--reportexclude CMSV \
		--time $TIMEOUT \
		--client \
		$(printf $ADDR_TMPL $I) | \
		grep "Kbits/sec" | \
		sed -r 's/^.* ([0-9]+) Kbits\/sec/\1/g'; \
		PIDS[$I]=$!) &
	done;
	wait ${PIDS[@]}) | \
	    awk 'BEGIN{s=0} {s+=$1} END{print s}'
    exit 0
}

stop() {
    exit 0
}

trap stop INT
start

results.gnuplot

reset

set terminal jpeg enhanced
set output "results.jpg"

set key left
set ylabel "Mbits/sec"
set xlabel "# of aliases"

set grid
plot 'results.dat' using 1:($2/1000.0) with points pointtype 7 title '', \
                '' using 1:($2/1000.0) smooth csplines title ''

server.sh

#!/bin/bash

set -e

if [ $# -ne 3 ]; then
    echo "Usage: $0 <NAME_TMPL> <ADDR_TMPL> <N_WORKERS>"
    exit 1
fi
NAME_TMPL="$1"
ADDR_TMPL="$2"
N_WORKERS="$3"

start() {
    echo "Taking network interfaces up..."
    for I in `seq 1 $N_WORKERS`; do
	sudo ifconfig $(printf $NAME_TMPL $I) $(printf $ADDR_TMPL $I)
    done

    echo "Starting iperf servers..."
    for I in `seq 1 $N_WORKERS`; do
	iperf --server --bind $(printf $ADDR_TMPL $I) &
    done

    echo "Started."
}

stop() {
    echo "Taking network interfaces down..."
    for I in `seq $N_WORKERS -1 1`; do
	sudo ifconfig $(printf $NAME_TMPL $I) down
    done

    echo "Stopped."
    exit 0
}

trap stop INT
start && while /bin/true; do sleep 5m; done