I have a huge file of millions of record.... But it takes huge time around 2+ hours

How many millions?

Perl can process 4 million records in 2.5 seconds:

perl -MTime::HiRes=time -E"BEGIN{$t=time()}" 
-nle"++$n }{ printf qq[$n records in %f seconds\n], time-$t" 250MB.CSV
4194304 records in 2.518000 seconds

[download]

So, how about you post your code and let us help you fix it?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re: how to split huge file reading into multiple threads by BrowserUk
in thread how to split huge file reading into multiple threads by sagarika

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