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  1. #1
    Registered User
    Join Date
    Jul 2004
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    7

    Performance investigator question

    I couldn't find in the documentation the meaning of different columns in the memory usage panel of PI. There are Chunks, Stack/Heap and Memory total.

    In my test software I allocate 500Kb of memory from the heap but still get the following values during that period in the PI: "Chunks: 576Kb, Stack/Heap: 0 Kb, Memory Total: 0 Kb"

    I was wondering why the Stack/Heap column is zero?

  2. #2
    Nokia Developer Expert
    Join Date
    Oct 2004
    Location
    Austin, TX USA
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    271

    Re: Performance investigator question

    The Chunks column shows you how much memory is in a particular chunk. The Stack/Heap column shows how much stack and heap are used by the main thread of a process, so it will usually be zero unless the line in question is actually a thread rather than just a chunk. Are you sure the Memory Total was zero? That is supposed to simply be the sum of the Chunks and Stack/Heap columns.

    Regards,

    Matt P.

  3. #3
    Registered User
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    Jul 2004
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    7

    Re: Performance investigator question

    Quote Originally Posted by mpinsonneault View Post
    Are you sure the Memory Total was zero? That is supposed to simply be the sum of the Chunks and Stack/Heap columns.
    Hi, thx for the answer. No I'm not sure, it might have been the same 576Kb (I don't have the pi-file anymore). The stack/heap column was the one I was interested in.

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