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Re^2: Faster and more efficient way to read a file vertically

by ForgotPasswordAgain (Priest)
on Nov 03, 2017 at 20:58 UTC ( [id://1202723]=note: print w/replies, xml ) Need Help??


in reply to Re: Faster and more efficient way to read a file vertically
in thread Faster and more efficient way to read a file vertically

FWIW, seek was my first thought, too. (Also that I'd prototype in Perl, then write the same thing in C. I might've found my weekend project... :) I can't imagine that allocating memory is going to help (I like when my imagination is challenged, though). I think at least if we can assume the file is in filesystem cache the read will be coming from RAM already anyway.
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Re^3: Faster and more efficient way to read a file vertically
by ForgotPasswordAgain (Priest) on Nov 03, 2017 at 21:12 UTC
    I think this is parallelizable, too. If you have 24 cores, you can seek to $L/24, do your thing, combine results.
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