I'm starting to use [Spacemacs](https://github.com/syl20bnr/spacemacs) and occasionally I get stuck with Emacs beginning to require infinite amount of CPU and memory. Inspecting my `.emacs.d/.cache` folder reveals that the file `savehist` is 1.16 GB large... Deleting this file made Emacs work again.

Googling returned no result for me. Is there any precedent of such an abnormality, and how might one try to debug and fix it.