As other Monks have answered the main bit of your question i.e. the memory is 'freed' but not 'released' - one tip that i have found useful for when i really do need to release memory is to separate the work of into a child process, and when this process finishes the memory really will be cleared. Introduction to Parallel::ForkManager may help you with this.

Some other useful stuff if you want to find out more:

  • perl memory usage
  • module for monitoring memory usage
  • FMTYEWTK
  • useful discussion

    • Hope this helps

    Just a something something...

    In reply to Re: Memory reusability by BioLion
    in thread Memory reusability by abubacker

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