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A side note to those who recommend sorting first - yes, it will help immensely if you are able to do so first, but keep in mind that the sorting itself will be fairly expensive, especially for files this size. In addition, a simple unix sort will not be up to the task (without some further trickery) as each record is in multiple lines (and spans 1+ files) and the sort keys may be in different spots in each record. Not a challenge for perl, of course, but it probaby cancels out any speed benefit of having it pre-sorted.


In reply to Re: Efficiency and Large Arrays by turnstep
in thread Efficiency and Large Arrays by Kozz

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