The patterns are not complex, but long, since they're made of all the elements of long arrays, separated by "|" (with the intent of alternatively match different patterns).

Then you'll likely benefit from running perl 5.10 or newer, since it implements a Trie optimization for alternations of literal patterns. If the arrays are really huge, you could increase the value of ${^RE_TRIE_MAXBUF} to make them all fit into the same trie.

Perl 6 - links to (nearly) everything that is Perl 6.

In reply to Re^3: An efficient way to parallelize loops by moritz
in thread An efficient way to parallelize loops by Deus Ex

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