You didn't post any code, so it's very hard to say. Perhaps you are already using the fastest solution, which only leaves the answer: upgrade your hardware.

And perhaps you are doing something stupid. Then you don't need any clever tricks, you just have to get rid of the stupidity.

And who knows, perhaps you don't need a regexp at all. Maybe you can put the 300 keywords into a hash, and extract all the words from the document, looking for a match. But it will depend on what the keywords are whether that is possible.

Also, is there a way of measuring the execution time of perl scripts without letting the script complete its run?
No, because if the answer would be 'yes', one could solve the halting problem - which is unsolvable.

Abigail

In reply to Re: speeding up regex by Abigail-II
in thread speeding up regex by dannoura

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