The same QML program run on Freescale/Yocto and Raspberry/Raspbian, these two test devices have almost same CPU armv7. But the Raspbain side had very bad perfor
armv7
I found the solution to improve the performance: Enable OpenGL driver solved the problem.
raspi-config
Advanced Options
GL Driver
GL(Full KMS)
Now working well, but still get the JIT warning.
JIT
You must rebuild Qt to get full eglfs or X11/openGL features and crosscompiling features