Math::Random::MT is over an order of magnitude slower than the default rand function. Far superior, but much slower:

require Math::Random::MT;;

cmpthese -1,{a=>q[my $a; $a=rand() for 1..1e6],b=>q[my $a; $a=Math::Ra
+ndom::MT::rand() for 1..1e6] };;
            (warning: too few iterations for a reliable count)

  s/iter     b     a
b   1.58    --  -93%
a  0.105 1407%    --

[download]

And for picking 1 of 68 for random test data; the built-in is perfectly adequate.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^2: Is rand() really that slow or am I just using it wrong? by BrowserUk
in thread Is rand() really that slow or am I just using it wrong? by adiuva

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