Generate system load.

generate-system-load.sh

#!/bin/bash -e

TIMEOUT=${1:-120}

CPU_UNITS=$(cat /proc/cpuinfo | grep processor | wc -l)
until [[ ${COUNT} -eq ${CPU_UNITS} ]]
do
    timeout ${TIMEOUT} dd if=/dev/zero bs=10 | gzip | gzip -d > /dev/null &
    COUNT=$((COUNT+1))
done

until [[ ${SECONDS} -eq ${TIMEOUT} ]]
do
    LOAD=$(uptime | sed 's/,//g' | awk '{ print $(NF-2)}')
    echo "1m load average: ${LOAD}"
    sleep 1
done

exit 0