If you are doing math on hash keys, then you have tripped into a perl problem: perl treats the number as a string when it is used as a hash key and as a number while doing math. Converting between these two representations is relatively slow.

If you can use mathematical algorithms for doing your statistics that do not involve number-as-hash-key then you might easily achieve a 10X improvement. Especially if the math is done in a module that is implemented with C code.

It should work perfectly the first time! - toma

In reply to Re: Need to process a tab delimted file *FAST* by toma
in thread Need to process a tab delimted file *FAST* by devnul

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