Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Okay, I've now changed all given/when to if/elsif/else, and it has improved things, but it is still leaking (just not as fast).

I'd love to reduce the leakage even further. If I understand it correctly, one source of data leaks is if the value of a variable is actually a nested structure (so it has refs in it) and I set the value to something else, the old value is destroyed (assuming a refcount of 0), but any data referenced by it may not be automatically destroyed. Is that correct? I'm fairly sure that this happens, but I'm really not looking forward to a code audit of the thousands of lines of code to track this down.

Is there a good tool that I can use that will tell me every line number in the module where a variable was set to a new value and the old value was destroyed, but part of it hung around? Then, I could recursively destroy the old value before I created a new value (there's probably even a module to help me do this).

This, or any other suggestions would certainly be welcome. I'm afraid that in all the time I've been programming perl, I've never tried tracking down a memory leak, and I'm mainly just stumbling around in the dark I'm afraid.

In reply to Re^8: Memory leak question by SBECK
in thread Memory leak question by SBECK

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, 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, 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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others examining the Monastery: (7)
    As of 2019-11-21 13:51 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      Strict and warnings: which comes first?



      Results (104 votes). Check out past polls.

      Notices?