Reference links
http://askubuntu.com/questions/68144/init-process-at-100-cpu-usage
https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/880049
I've run the below commands in that problematic server and got it working.
add-apt-repository ppa:jammy/upstart.fix-880049
apt-get update
apt-get upgrade
reboot
