Script to load test, using cURL.

load_test.sh

#!/bin/bash

CONCURRENCY=1
REQUESTS=10
ADDRESS="http://localhos:8080"
TIMEOUT=2

show_help() {
cat << EOF
Naive Stress Test with cURL.
Usage: ./stress-test.sh [-a ADDRESS] [-c CONCURRENCY] [-r REQUESTS]
Params:
  -a  address to be tested.
      Defaults to localhost:8080
  -c  conccurency: how many process to spawn
      Defaults to 1
  -r  number of requests per process
      Defaults to 10
  -t  timeout per request in seconds
      Defaults 2s
  -h  show this help text
Example:
  $ ./load-test.sh -c 4 -r 100 (400 requests to localhost:8000)
EOF
}


while getopts ":a:c:r:t:h" opt; do
  case $opt in
    a)
      ADDRESS=$OPTARG
      ;;
    c)
      CONCURRENCY=$OPTARG
      ;;
    r)
      REQUESTS=$OPTARG
      ;;
    t)
      TIMEOUT=$OPTARG
      ;;
    h)
      show_help
      exit 0
      ;;
    \?)
      show_help >&2
      echo "Invalid argument: $OPTARG" &2
      exit 1
      ;;
  esac
done

shift $((OPTIND-1))

#### Main
echo ""
echo "###########################"
echo "######## Load Test ########"
echo "###########################"
echo ""
echo -e "DATE: $(date) \nURL: $ADDRESS \nrate: $REQUESTS calls/second"

START="$(date -u +%s.%3N)"

for i in `seq 1 $CONCURRENCY`; do
  curl -s --output /dev/null "$ADDRESS?[1-$REQUESTS] --connect-timeout $TIMEOUT " & pidlist="$pidlist $!"
  echo "Finalized $((REQUESTS*i)) requests "
done

# Execute and wait
FAIL=0
for job in $pidlist; do
  #echo $job
  wait $job || let "FAIL += 1"
done

# Verify if any failed
END="$(date -u +%s.%3N)"

echo "Failed Requests : ($FAIL) de ($((CONCURRENCY * REQUESTS))) "
TOTAL="$(bc <<<"scale=5;$END-$START")"
TIMEREQUEST=`echo "scale=5;$TOTAL / $REQUESTS * $CONCURRENCY" | bc -l`
echo "Total Time: $TOTAL [s]"
RT=`echo "scale=5;$TIMEREQUEST/1000" | bc -l`
echo "Time/Request: " $RT

There is a typo with the default address constant