[Cryptography] cheap sources of entropy
Bill Frantz
frantz at pwpconsult.com
Sun Feb 2 23:36:04 EST 2014
My experience with working on several OS kernels is that OS
scheduling is a black art. Its a lot more arcane than cryptography.
If I were working on the scheduler for a modern VM hypervisor, I
would spend considerable effort trying to maximize the
efficiency of the L1 and L2 caches. Disk I/O just doesn't count.
If you have to wait for a disk operation, you're in a long-term
penalty box.
Now, if you can measure program execution time accurately enough
to determine the L1 and L2 cache misses, they might be a good
source of bits unknown to outside observers. :-)
Cheers - Bill
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