nftables flowtable performance script

nftables_flowtable_perf.sh

#!/bin/sh

test -z "${1}" && { printf "Must specify iperf3 server address as first argument."; exit 1; }
test -z "${2}" && { printf "Must specify iperf3 server network namespace as second argument."; exit 1; }

HOST="${1}"
NS="${2}"
NUM_INSTANCES=16
NUM_RUNS=10

rm ./runs &>/dev/null || true
for run in $(seq ${NUM_RUNS}); do
        for I in $(seq ${NUM_INSTANCES}); do
                ip netns exec ${NS} iperf3 -s -1 -p 500${I} -i 0 >/dev/null 2>/dev/null &
        done
        sleep 5

        for I in $(seq ${NUM_INSTANCES}); do
                (iperf3 -J -p 500${I} -c ${HOST} -i 0 -O 10 -t 60 -Z -P 128 2>/dev/null | jq '.end.sum_received.bits_per_second' > ./bps-${I} ;) &
        done
        wait
        bc <<-HERE >> ./runs
                $(cat ./bps-* |while read LINE; do
                        printf "${LINE} + "
                done) 0
        HERE

        rm -f ./bps-*
done

bc <<-HERE > ./mean
        scale=2
        ($(cat ./runs |while read LINE; do
                printf "${LINE} + "
        done) 0) / ${NUM_RUNS}
HERE

bc <<-HERE > ./stddev
        scale=2
        sqrt( ($(cat ./runs |while read LINE; do
                printf "(${LINE} - $(cat ./mean))^2 + "
                done) 0) / (${NUM_RUNS} - 1) )
HERE

printf "\n"
printf "BPS (all): %s\n" "$(cat ./runs)"
printf "BPS (mean): %s\n" "$(cat ./mean)"
printf "stddev: %s\n" "$(cat ./stddev)"
rm ./runs
rm ./mean
rm ./stddev