virtualbox.org

When using top, is there a way to know which VM is which? I have a vm using 100% cpu but I don't know which one it is, how would I determine this?

Instead of using top, try using something like ps -aef (of course, the syntax may depend on your distro - mine is for Darwin).

I tried that command but did not really get anything useful out of it. Just a bunch of random chars, and some random file paths. Think it's dumping actual ram or something.

try it this way

ps axwwo pid,command|grep Vi

If you are not happy with it copy and paste the answer so we can see it.
Also exactly which linux are you on ?

Thanks that worked, I just had to do ps axwwo [pid] and it showed the actual command, which has the vm name in it.