I've used this: 

sub my_mem {
    my @pslines
        = grep( m{ \A \s* (?: \d+ \s+ ){2} $$ \b }xms, `ps axl` );

    die if ( scalar @pslines != 1 );

    my $line = $pslines[0];
    chomp $line;
    my @words = split /\s+/, $line;

    return $words[6];
}

[download]

It relies on the system's ps axl, not procfs. You can also use Devel::Size to size up individual data structures at run time.

In reply to Re^2: How to tell if script sucks...memory by kyle
in thread How to tell if script sucks...memory by jriggs420

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.