Started using Yocto to build BSP for SabreSD imx6q evaluation board.
Build X11 system for BSP and SDK to get the toolchain to build my test application.
I have managed to get a system to capture from the on board camera and display on HDMI display.
The same code runs on last LTIB BSP and on new Yocto BSP.
I experiencing a reduction in performance by almost 30% when using Yocto BSP.
Upon investigation I have narrowed down the issue to the way data is copied from and to MMAP memory used for capture and display. I tried to configure the kernel and cannot see any major differences to the way the kernel was build with LTIB.
I am not sure if this a known issue with Yocto, but any advice on what can be done to improve speed will be appreciated.