Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Your "use threads" should do the trick, or any of the alternatives described in the "THREAD STACK SIZE" section of the threads POD...just do it as early as possible. I'd suggest that 64 * 4096 is probably a lot more than you need, as Perl has its own notion of a runtime stack, and in reality doesn't use that much process/thread stack (unless you're using very large/complex regexes, and even that issue goes away in 5.10). Note that once stack size is set, its set for all the threads/modules, so you don't need to do anything in Thread::Pool.

Also keep in mind that each thread has its own Perl interpretter, so memory size may be an unavoidable issue, esp if the threads are spawned from another thread that already has a lot of context (due to the interpretter cloning).

Update:
I just realized your issue has 2 parts: memory and CPU; note that my comments thus far have been entirely about the memory issue. However, given the size of the Perl process, might the CPU issue be related to paging/swapping ?


Perl Contrarian & SQL fanboy

In reply to Re^3: Multithreaded Script CPU Usage by renodino
in thread Multithreaded Script CPU Usage by Zenshai

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!
  • 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
  • Outside of code tags, you may need to use entities for some characters:
            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 having an uproarious good time at the Monastery: (7)
    As of 2014-09-22 00:12 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      How do you remember the number of days in each month?











      Results (176 votes), past polls