> I get /dev/random being 70+X slower, not ~2X slower It's not said about which device is meant, but it's probably /dev/urandom - from similar conversation on discord, and the manpage:
> The /dev/random device is a legacy interface which dates back to a time where > the cryptographic primitives used in the implementation of /dev/urandom were > not widely trusted. It will return random bytes only within the estimated > number of bits of fresh noise in the entropy pool, blocking if necessary. > /dev/random is suitable for applications that need high quality randomness, > and can afford indeterminate delays. and I thought this might be relevant: > Since Linux 3.16, a read(2) from /dev/urandom will return at most 32 MB. A > read(2) from /dev/random will return at most 512 bytes (340 bytes on Linux > kernels before version 2.6.12). but on my machine, `strace dd if=/dev/random bs=1024 >/dev/null` shows 1024 reads. weird.
