My Ubuntu system sometimes gets completely unresponsive. The mouse moves, but that's about it - no other input is registered.
I have absolutely no idea on which process is causing the system to drag and when the system becomes responsive again, the process has already ended, giving me no clues on what was happening.
Is there anyway I can posthumously check which process was making my system drag? Is there any tool that logs processes that are using CPU / IO / RAM in real time and that we can check this log afterwards (something with a GUI would be nice).
Cheers and thank you in advance, V
