RTOS/CC2640R2F: Understanding and using heap manager metrics

Tool/software: TI-RTOS

Hy,

after verifying that there is no stack issue I try to analyse the heap. I define HEAPMGR_METRICS as predefined symbol in the app project and find the global variables

heapmgrBlkCnt
heapmgrBlkFree
heapmgrBlkMax
heapmgrMemAlo
heapmgrMemFail
heapmgrMemFreeTotal
heapmgrMemMax
heapmgrMemUB

as expected. There is no display in ROV and ROV2 view:

But I can still see the variables as expressions:

There I see that memUB is higher than MemAlo. Do I have a problem? There is no MemFail...

In map file I see

20003c68  heapEnd                                                                   
20002920  heapStart                                                                 

So there is 4936 bytes for heap? So my UB of 3508 is still far from being critical?

I also tried to activate HeapTrack by adding

BIOS.heapTrackEnabled = true;

into app_ble.cfg, but I do not see any effect on the project.

Any hints?

Regards

Harald