This article will help you determine how to test your throughput speed.
There are various ways to test your throughput speed. One method is to test from an endpoint such as the following locations:
wget -O /dev/null http://speedtest.dal01.softlayer.com/downloads/test100.zip
wget -O /dev/null http://speedtest.ams01.softlayer.com/downloads/test500.zip
You can also use a tool such as Flow Tool Bundle, which is from SolarWinds.
You can also use a tool such as Paessler PRTG Network Monitor.