Now that we have two EC2 machines, one Xen based EC2 and one Nitro/KVM based EC2, we can run a simple test to see the speed in which is can return time of day. This test program was installed on each machine under /tmp/time_test.py. The program will simply request the time of day from a local c-library one million times.
It will take longer to complete for one node to run than the other. The total time for both to complete should be about 2 minutes if you use the default EC2 instance types.