Installation
Refresh the package database.
sudo apt-get update
Install the apache2-utils package to get access to ApacheBench.
apt-get install apache2-utils
Sample tests
ab -n 50 -c 10 -H 'origin: *' http://yahoo.com/
ab -n 10 -H 'origin: *' http://cors-anywhere.herokuapp.com/
Plotting outcome with gnuplot
ab -n 500 -c 100 -g out.data http://yahoo.com/