I see it. He is looking at the case where each "job" is identical overall, but the processes in it are unique across the job.

Each job has 10 processes each and the time they process is the starting order (as procX) times 1 second. So the first process in the job takes 1 second and the last process takes 10 seconds. When you run 10 of these jobs at the same time you get more or less process procX of all jobs dropping at the same time. Since new jobs are not launched until a previous job is completely emptied then the process count drops real low until a job is finished.

I think the requirements the OP could could use some improvement, but it does say that "first 10 processes" needs to finish before 10 new are launched.

PS. If this didn't make it clear, just draw out a timeline on paper and track when something starts and ends while keeping track of # concurrent processes.

In reply to Re^4: Parallel::ForkManager How to wait when 1st 10 Child processe are over out of 100 by admiral_grinder
in thread Parallel::ForkManager How to wait when 1st 10 Child processe are over out of 100 by anshumangoyal

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.