@leonardoMB said in Memory is Leaking but Heob don't get it?: Great answer, but what if RAM is a limitation for me? like: I really need that 10 MB If this is really your problem, then you need to provide more information. More specifically we need your platform and operating system (my guess is embedded with a Linux system?). However, you might get better answers for these kind of problems on Stack Overflow as this is not really related to Qt anymore.

Looks like your executable is built without debug info. And if you're using gcc, you'll need the dwarfstack dlls (there should have been a warning for this). Also, heob can also output a flamegraph svg file (if you prefer), just add this to the Extra arguments: -vleaks.svg -g2