qt5 signals and slots - c++ - Why my signal-slot is slower than QThreadPool+new+delete ... ok 888 slot login

I was reading Qt's Signals & Slots [1] and noticed that it claims signals and slots have much lower overhead than any new or delete operation.

ui for connecting signals and slots and configuring stuff as well, but few people use it. ... I try hard to do that (it saves on boilerplate), but the challenge is always in finding signals and slots with the same precise amount of parameters.

In this PyQt6 Tutorial, we shall explore the signals and slots system. Signals are activated whenever certain events occur, such as a Button click. The Signa...