I'm starting to use 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.