Re: Fast Random Data Generation

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

Linux-Fan wrote:
> I wrote a program to automatically generate random bytes in multiple
> threads:
> https://masysma.net/32/big4.xhtml
> ...
> || Wrote 102400 MiB in 13 s @ 7812.023 MiB/s

That's impressive.


> Secure Random can be obtained from OpenSSL:
>
> | $ time for i in `seq 1 100`; do openssl rand -out /dev/null $((1024 * 1024 * 1024)); done
> |
> | real  0m49.288s
> | user  0m44.710s
> | sys   0m4.579s
> Effectively 2078 MiB/s (quite OK for single-threaded operation).

Probably the best choice for sceptics who critizise a reproducible random
stream or mistrust random people's aptness to produce random.
(If the number of desired loops gets larger, then one could do arithmetik
 in a "while" loop instead of "for" and "seq".)


Have a nice day :)

Thomas