Docker 1.9.1 on Ubuntu 14.04 with devicemapper

userdata.sh

#!/bin/bash

TESTDIR=/opt/test
mkdir -p ${TESTDIR}

cat >${TESTDIR}/runner.sh << 'EORUNNER'
#!/bin/bash

curl https://get.docker.com | sh

/bin/bash test.sh > test.out
EORUNNER

cat >${TESTDIR}/run-only.sh << 'EORUNONLY'
#!/bin/bash

TIME=$(which time)
TIMEFILE="time-nginx.out"
MAXTIME="0.00"

total_containers=1000
for i in $(seq 1 ${total_containers}); do
        echo "Running ${i}/${total_containers}"
        ${TIME} -o "${TIMEFILE}" -f '%e' sudo docker run nginx echo "hello, container"
        nginx_time=$(cat ${TIMEFILE})
        echo "Ran in ${nginx_time}"
        if (( $(echo "${nginx_time} >= ${MAXTIME}" | bc -l) )); then
            echo "New maxtime ${nginx_time} :("
            MAXTIME="${nginx_time}"
        fi
done

echo "Ran ${total_containers}; the longest-running container took ${MAXTIME} to run."
EORUNONLY

cat >${TESTDIR}/run-delete.sh << 'EORUNDELETE'
#!/bin/bash

TIME=$(which time)
TIMEFILE="time-busybox.out"
MAXTIME="0.00"

total_containers=1000
for i in $(seq 1 ${total_containers}); do
        echo -n "Running ${i}/${total_containers}: "
        container=$(sudo docker run -d busybox sleep 1)
        echo "${container}"
        sudo docker stop "${container}"
        echo "Removing ${container}"
        ${TIME} -o "${TIMEFILE}" -f '%e' sudo docker rm "${container}"
        busybox_time=$(cat ${TIMEFILE})
        echo "Removed in ${busybox_time}"
        if (( $(echo "${busybox_time} >= ${MAXTIME}" | bc -l) )); then
            echo "New maxtime ${busybox_time} :("
            MAXTIME="${busybox_time}"
        fi
done

echo "Removed ${total_containers}; the longest removal took ${MAXTIME}"
EORUNDELETE

cat >${TESTDIR}/test.sh << 'EOTEST'
#!/bin/bash

sudo service docker stop
echo 'DOCKER_OPTS="-s devicemapper"' | sudo tee -a /etc/default/docker
sudo rm -rf /var/lib/docker
sudo service docker start

sudo docker version
sudo docker info

echo "Preparing images"
sudo docker pull nginx
sudo docker pull busybox

echo "Starting run-only.sh"
RUN_ONLY_OUTPUT="run-only.out"
/bin/bash ./run-only.sh &>"${RUN_ONLY_OUTPUT}" &
RUN_ONLY_PID="$!"

echo "Starting run-delete.sh"
RUN_DELETE_OUTPUT="run-delete.out"
/bin/bash ./run-delete.sh &>"${RUN_DELETE_OUTPUT}" &
RUN_DELETE_PID="$!"

wait "${RUN_ONLY_PID}"
RUN_ONLY_RC="$?"

wait "${RUN_DELETE_PID}"
RUN_DELETE_RC="$?"

cat <<EOS
===============================================================================
run-only.sh output
===============================================================================
$(cat ${RUN_ONLY_OUTPUT})

===============================================================================
run-delete.sh output
===============================================================================
$(cat ${RUN_DELETE_OUTPUT})
EOS
EOTEST

cd ${TESTDIR}
/bin/bash runner.sh