No, RAM is not the issue. The server is a Ubuntu 8.04, has 8GB of RAM, the kernel is PAE enabled and it can see all 8GB or RAM. The swap is also not an issue - 8GB of swap. Unfortunately I can't make the children smaller. They all load a an instance of Bayesian classifier model trained on a large data set. The only real solution would be to write a server that loads that classifier, then launch several of those servers listening on different ports and then have the spawned children I mentioned earlier do some socket-level communication with servers in a round-robin fashion. So it's basically a way of offloading some of the data processing to separate instances and not inside the child processes that crash sometimes. So to reiterate, you are not aware of any restrictions on parent-child memory allocation? Nothing related to values of SHMMAX or stuff like that? The current value of SHMMAX is 32MB btw.

In reply to Re^2: child process dies soon after fork() call by haidut
in thread child process dies soon after fork() call by haidut

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.