me:
and twuewand comparing time from CPU with time from RTC.
Stephan Mueller @smuellerDD is the author of jitterentropy-rng who also re-worked Linux kernel entropy replied:
This sounds like a high-res clock being sampled by a low-res clock like ring oscillators do that. I had once played with this idea but discarded it for a reason.
Seems like twuewand got obsoleted by jitterentropy-rng. Since the author of twuewand was also cc’d in that discussion, until there is other information, discarding twuewand as an option.
Back to the drawing board → Moar Entropy Sources