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 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
