[xenadu02]

That's not what the paper is doing.

It's exploiting randomness from pipeline stalls, memory access latencies, CPU frequency scaling, etc.

Even disabling interrupts and cache doesn't reduce the entropy enough to make it non-random.

[valarauca1]

Yes it is. Just your looking at the system at a different level. Resource contention is the stalls caused by context switching, cache missing, system latencies, and branch prediction.

Ultimately these 4 sources of latency build on top of each other to generate all your stalls, and slow downs in the system. What you see as CPU frequency scaling, I just see as my state switching in my program happen slower. What you see as pipeline stalls are just cache/ram misses, hard disk IO latency, and lots of context switches compounding on each other.

TL;DR You say "a starchy, tuberous crop from the perennial nightshade Solanum tuberosum L.", I say potato.