GCP does not provide you any tool to kill proccess. Instead, you can SSH your VM instance and figure out what process is eating away your CPU and stop it, by executing this commands:
- Open a terminal with Ctrl+Alt+t
- Execute the command "top"
- Note the process using the most CPU
- If the process isn't a system process, kill it with "sudo pkill [processname]" where [processname] is the name of the process you want to kill.
If it is a system process, don't kill it, but try to Google the name of it and figure out what functionality it does in Ubuntu.