Qt-application-getting-slow-on-raspberry-pi-4-after-some-time)

[Ashapura Softech]

Re: QT Application getting slow on Raspberry Pi 4 after some time

By systematically investigating these potential causes, you can effectively diagnose and address the performance slowdown in your QT application on the Raspberry Pi 4.

Here are some additional resources that you might find helpful:

QT Performance Optimization Guide: https://www.qt.io/blog/tag/performance
Memory Management in C++: https://en.cppreference.com/w/cpp/memory
Raspberry Pi Thermal Throttling: https://newscrewdriver.com/2018/09/06/detecting-raspberry-pi-thermal-throttling-from-console/

[sbela]

Maybe completely unrelated, but I had the some similar problem, that my application is slowed down after a time. For me it was that I have debug messages with printf and with libfmt fmt::print and when I run my application without watching the output in ssh or same way in a terminal the application slowed down. I had to start my application with redirection of the outputs to /dev/null and the slow down went away. So for me worked the 2&>1 >/dev/null added in the at the startup shell script.