Maybe it's just my old Mac, but today was the last time I was caught surprised by a buildup of SWAP usage that slowly but steadily ground my machine to a halt. Let me present to you - a tiny bash utility that will notify you if either SWAP or Kernel CPU raises too much - so you can act before it becomes a headache.

Feedback and contributions welcome :)

PS. I know there are better tools for the job, I just wanted to have something extensible and with a small footprint.