Performance investigator question

[riussi]

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?

[mpinsonneault]

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.

[riussi]

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.