It's not clear what you're trying to accomplish - a brief explanation of "initial state" and "desired result state" would be helpful (e.g. "start with a directory containing, say, 20000 mbox files" and "when done, there should be a (set of) file(s) with 20000 lines with the following info about the mboxes").

You seem to be using "find" on each iteration of a list of lines from your one input file. Are you sure you aren't doing repetitions? (When directory trees are really large, full traversals using File::Find can be really time consuming. Get a clear idea of what tree(s) you need to traverse, and make sure you only do that once (storing stuff in a hash or array as needed).

Apart from that, the timing issue would seem to depend mainly on the size of your input file, and the size of the directory trees you're traversing. Can you give us some stats on that?

In reply to Re: Increase script speed by graff
in thread Increase script speed by ctrevgo_learn_perl

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.