Best guess. If you just commented out the two lines that call $$session->get_entries(...), you'd still not see the memory growth. Not that that would be surprising, as the rest of the code wouldn't be doing much of anything.

Looking at it from the other direction. Leave all the other code commented out and just call whichever of those two lines is appropriate--but do nothing with the results returned from the call--and the memory growth will return.

$session is a reference to the Net::SNMP object

Is that module thread safe? Are you reusing a single object to talk to multiple devices? Are you sharing one instance between threads?

You might be able to check whether the session object is accumulating data internally long after you have finished with it by using Devel::Size on $session after each call to get_entries()


Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re^3: Massive Perl Memory Leak by BrowserUk
in thread Massive Perl Memory Leak by wagnerc

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.