Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

/dev/random and /dev/urandom are used to supply entropy (randomness) to the system. They both come from the same pool of randomness in the kernel. One blocks until enough randomness is obtained to provide a number. The other tries to make due with however much randomness the kernel has (and doesn't block).

Haveged (and other programs) are means to supply the kernel with randomness. By default, haveged manages a 1M buffer of randomness. Haveged does not appear to keep open a file for this buffer of randomness, so perhaps it doesn't write the buffer to disk on shutdown.

But in any event, it seems to build the pool of randomness in the kernel faster than most other things I've tried.

In reply to Re^3: Your random numbers are not that random by Anonymous Monk
in thread Your random numbers are not that random by davies

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others lurking in the Monastery: (6)
    As of 2015-10-08 16:37 GMT
    Find Nodes?
      Voting Booth?

      Does Humor Belong in Programming?

      Results (221 votes), past polls