Core files…what are they?

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  • #50694
    Darren Tomlinson
    Participant

    sometimes i see files under exec/processes/process name that are named something like core.27569 or core.4375

    any idea what these are?  i try and open them in text editors and it is all jibberish.

    (also note, I am running Cloverleaf 5.6 on Red Hat Enterprise 5.2)

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    • #67140
      Jim Kosloskey
      Participant

      you have undoubtedly had some issues that caused Cloverelaf(R) to take a memory dump.

      Those files are the dumps.

      If they are occurring with some frequency you had better check it out. There should be incications in the process and/or error logs that indicat the dumps are being taken. That should give you some clue as to what is trying to happen in Cloverleaf(R) at that time.

      If they are old they are probably not of any value.

      If you want to see what is in them, you could use hcihd – although I don’t think that will be very enlightening.

      There may be a dump reading utility available but unless you know what you are looking for I don’t know how useful that would be.

      These files are probably best used directly by support.

      email: jim.kosloskey@jim-kosloskey.com

    • #67141
      Gary Atkinson
      Participant

      I found a file called ‘core’ in the $HCIROOT directory.  AIX says this:

      core: AIX core file fulldump 32-bit, hcitpstest

      The file size is 24mb.  It is just jubberish in vi.  What is this file and can I delete it?

    • #67142

      This would be a good question for a FAQ or Wiki. 🙂

      You can safely delete core.* files, but you may want to investigate why your processes “core dumped” (crashed).

      -- Max Drown (Infor)

    • #67143
      Jim Kosloskey
      Participant

      Gary,

      I think that is a memory dump created by the tps testing tool when a tps type Tcl proc was tested.

      email: jim.kosloskey@jim-kosloskey.com

    • #67144
      Charlie Bursell
      Participant

      Just for you Max  🙂

      http://en.wikipedia.org/wiki/Core_dump

    • #67145

      Did I mis-use the term? I get the core files when the process crashes, like with a bad IF statement (in 5.6 rev2).

      -- Max Drown (Infor)

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