When I increase the number of filters to 83 and skew the ordering to match towards the end (to simulate a CPU bound process), I get 5.8s run time for the same input for the single threaded code. I get 6.1s run time for the multi-threaded code.

Could you post those versions of the two programs (save me trying to reproduce them from your descriptions), as I'd like to do a little more analysis on them.

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In reply to Re^5: Process large text data in array by BrowserUk
in thread Process large text data in array by hankcoder

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