My file system doesn't peg my CPU when it gets 10% full. Why the hell should the very existance of unused docker images cause the single image I am using to pe

My file system doesn't peg my CPU when it gets 10% full. Why the hell should the very existance of unused docker images cause the single image I am using to peg multiple cores? And no warning was given. Heck if my hard drive gets close enough to full that it's gonna be a problem my OS tells me.