in reply to Re^2: Perl system command memory usage in threads
in thread Perl system command memory usage in threads

Is that the exact code from the OP?

Because when I run that code (Vista;(v5.18.4) built for MSWin32-x64-multi-thread) with:

Which brand (AS/Strawberry/self-built) of Perl are you using?

Anyone got any experience of this phone's predecessor?

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Re^4: Perl system command memory usage in threads
by rmahin (Scribe) on Jul 31, 2015 at 21:57 UTC

    Yes, that is the exact code run on the test system. I've also included another update indicating system information and perl -v output.

    For what its worth, the systems I'm testing this on are virtual machines, and are experiencing some issues. I just did not think these issues could/would cause a problem like this?

    Running the code on my workstation, on active perl 5.20.2, i too see no memory leak and similar numbers.

[reply]
      For what its worth, the systems I'm testing this on are virtual machines,

      That is almost certainly the cause; and I seriously doubt that there is anything that can be done either in your script or perl to alleviate it.

      About the only thing that might offer a solution (besides dropping out of the VM) would be to try a different VM.

      When I played with VMs a couple of years ago I had less problems with MS Virtual PC than Oracle's Virtual Box; but both gave me problems -- mostly with networking for the stuff I was doing. However, both have seen significant updates since, so my information is out of date.

      FWIW: one of my customers uses VMWare and they are very happy with it; but they can afford to employ expertise and pay for support contracts.

      Anyone got any experience of this phone's predecessor?

      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority". I knew I was on the right track :)
      In the absence of evidence, opinion is indistinguishable from prejudice.
      I'm with torvalds on this Agile (and TDD) debunked I told'em LLVM was the way to go. But did they listen!
[reply]

        Well, upgrading the vm to perl 5.20.2 seems to have actually fixed the problem. So it looks like the bug was in perl 5.18, maybe specifically perl 5.18 on a VM or Server 2008? Dunno, very weird. At least it's an easy work around.

        Also, this seemed to have solved my second question as well...no more hanging from the un-synchronized system commands. Go figure

        Thank you for taking the time to help! Much appreciated

[reply]

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