A simple bash script to do load (performance) testing of a web service

load-test.sh

max="$1"
date
echo "url: $2
rate: $max calls / second"
START=$(date +%s);

get () {
  curl -s -o /dev/null -w %{http_code} --max-time 3 "$1" 2>&1 | tr '\r\n' '\\n' | awk -v date="$(date +'%r')" '{print $0"\n-----", date}' >> /tmp/perf-test.log
}

while true
do
  echo $(($(date +%s) - START)) | awk '{print int($1/60)":"int($1%60)}'
  sleep 1

  for i in `seq 1 $max`
  do
    get $2 &
  done
done