How long are the lines in the file? Unless they are extremely long what you have shown should be fine. Are you sure you are not leaking memory in the loop or accumulating data in the loop? As a sanity check you might like to try:

open my $fh,... while (<$fh>) { } close $fh;

and check that that runs correctly. Assuming it does, start adding back the contents of the while loop and see where the problem happens. If it doesn't run correctly (terminate cleanly) you need to rethink what constitutes a line and possibly come back for more advice.


DWIM is Perl's answer to Gödel

In reply to Re: Parsing very big files GB by GrandFather
in thread Parsing very big files GB by rootcho

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.