curl timer fetch stackexchange CDNs

cdn_tester.sh

#!/bin/bash

REPEAT=20
TIMER=0

function fetchTimer {
    URL=$1

    CURRENT_TIME=`curl --compressed -w '%{time_total}' -o /dev/null -s $URL`;
    TIMER=`echo "$CURRENT_TIME + $TIMER" | bc`
}

for url in "http://sstatic.net/js/full.js" "http://sstatic.stackexchange.netdna-cdn.com/js/full.js" "http://d1d5ue6vu5b30i.cloudfront.net/js/full.js" "http://wac.43df.edgecastcdn.net/8043DF/sstatic/js/full.js"; do
    TIMER=0
    for (( i=1; i<=$REPEAT; i++ )); do
        fetchTimer $url
    done

    echo $url
    echo "scale=2; (1000 * ${TIMER}) / ${REPEAT}" | bc
done