.sh

#!/bin/bash

n=$1
c=$2
if [ "$3" != "" ]; then
    date_command=$3;
else
    date_command="date";
fi

cat <<'EOF' > __bl1__.sh
#!/bin/bash

id=$1
counter=$2

# echo ${id} 1>&2
while [ $counter -gt 0 ]; do
    let counter-=1;
    # sleep 0.1;
    # echo ${id}-${counter} 1>&2;
done;
echo "end" 1>&2
EOF
chmod 755 __bl1__.sh

echo "processes   = " ${n} 1>&2
echo "counts/proc = " ${c} 1>&2

begin_at=`${date_command} +%s%N`
echo "begin at: " ${begin_at} 1>&2

for i in `seq 1 ${n}`; do
    ./__bl1__.sh ${i} ${c} &
done
wait

end_at=`${date_command} +%s%N`
echo "end at: " ${end_at} 1>&2
elapsed_usec=$(((end_at - begin_at)/1000))
echo "elapsed [usec]: " ${elapsed_usec} 1>&2
echo ${begin_at} ${elapsed_usec}