Simple curl benchmark

benchmark.sh

#!/bin/bash

URL="$1"
MAX_RUNS="$2"
SUM_TIME="0"
SUM_SIZE="0"

i="0"
while [ $i -lt $MAX_RUNS ]; do
  TIME=`curl $URL -o /dev/null -s -w %{time_total}`  
  TIME="${TIME/,/.}"
  SIZE=`curl $URL -o /dev/null -s -w %{size_download}`  
  SIZE="${SIZE/,/.}"
  SUM_TIME=`echo "scale=5; $TIME + $SUM_TIME" | bc`
  SUM_SIZE=`echo "scale=5; $SIZE + $SUM_SIZE" | bc`
  i=$[$i+1]
done

TIME_AVERAGE=`echo "scale=5; $SUM_TIME / $MAX_RUNS * 1000" | bc`
SIZE_AVERAGE=`echo "scale=5; $SUM_SIZE / $MAX_RUNS / 1024" | bc`
echo "Time:"
echo "Sum: $SUM_TIME sec"
echo "Avg: $TIME_AVERAGE ms"
echo "Size:"
echo "Sum: $SUM_SIZE b"
echo "Avg: $SIZE_AVERAGE kb"

#./benchmark.sh http://localhost:80 1000