[Gllug] Questions arising from the random discussions...

Nix nix at esperi.org.uk
Tue Aug 3 21:33:55 UTC 2010


On 3 Aug 2010, Rich Walker told this:

> On 2010-08-03 08:25, Nix wrote:
>> Because most people have the same reaction as Jose Luis Martinez
>> earlier, that this is ultra niche, even though it isn't, so it was
>> dropped as a waste of silicon. (It's also really hard to keep random
>> noise sources on the CPU die good-quality: there's just too much regular
>> electrical noise around.)
>
> AMD768 hwrng, rnd-tools installed (not installed by default in Debian -
> weird) - still I can get "cat /proc/sys/kernel/random/entropy_avail"
> from >2000 to <200 after 15 steps.

I have absolutely no idea how fast that hardware generates entropy.
(Disturbingly, the rng-tools tell the entropy estimator that what they
are being fed is completely random: very unlikely.)

> *goes to order*

:)
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