Comment 7 for bug 1228977

Steps to reproduce:

On a Ubuntu 12.04 server

# use cloud archive havana
sudo apt-get install ubuntu-cloud-keyring
sudo su -c "echo deb http://ubuntu-cloud.archive.canonical.com/ubuntu precise-updates/havana main > /etc/apt/sources.list.d/OS_H_CA.list"
sudo apt-get update

sudo apt-get install git
git clone https://github.com/openstack-dev/devstack.git
cd devstack
./stack.sh # Use default settings by pressing Enter multiple times

sudo apt-get install testrepository

./rejoin-stack.sh

# create multiple screen windows to execute Tempest tests
cd /opt/stack/tempest
testr init
testr run --parallel tempest

# switch to the n-cpu window
# wait unitil it stops logging