Just ran a quick bench and your suggestion to avoid the copy (++) works very well - it's about twice as fast as my code above. As another test I also tried local $, = "\n"; print $output_fh @mergedlogs; but that's no faster to within statistical noise. I'll run a longer bench later just to see if it's at all significant.

In reply to Re^3: Write large array to file, very slow by hippo
in thread Write large array to file, very slow by junebob

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