Hi
We are also around dynalloc from C/C++, but
You are saying 17000 pages , but the used storage also high ?
(RPTSTG(ON))
So is it a reall a memory leak (HEAPC(ON,0,0,20)) or just a high real
storage usage ?
The LE runtime HEAPOOL(ALIGN) can make big differences .
Michael Knigge wrote:
All,
I currently try to find a obscure memory leak in one of our
applications. After some days our appl occupies ~17.000 pages of real
memory (needs just ~1.500 after startup).
As we track all malloc(), calloc(), realloc() and free() function
calls, I can say that there is no obvious memory leak....
Now... after I've looked at the JESYSMSG I've noticed that we've done
approx 17.000 DYNALLOCs, everyone with a different DD-Name (we let the
z/OS generate a unique one, like "SYS00001", "SYS00002", "SYS00003"
and so on)..... to be clear: *NOT* ~17.000 at the same time. mostly
only one at the same time...
Of couse, we deallocate them after we've finished using the DD-Name,
but I wonder that even after a DEALLOC (with SVC99) there is some
space still occupied....
Why? Because of performance? Because of some kind of control block
that can only grow but not shrink?
Thanks,
Michael
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