Other System Optimization Practices

Each system has its own set of boot time requirements to meet. Depending on your goals, there are a number of ways you can optimize the startup of the system. By implementing some simple techniques at various points in the boot sequence, you can make the OS and applications load, initialize, and launch more quickly. Here we discuss some generic techniques you can use to improve your boot-up time.

To get an understanding of how a system starts up, see “About the system startup sequence”.

To optimize:	See these sections for details:
The loading and launching of OS itself	Optimize the bootloader Use the optimized image scan functions Generic techniques to reduce the size of the IFS Reduce the size of the startup program Enable fast reading in the SD card Remove unnecessary debug printing Use compression strategies
The platform application stack	Make careful use of the default boot script Consider the placement of `waitfor` statements Reorder the startup program

These optimizations are focused on achieving system goals such as:

early audio— start audio as early as possible to play a sound, such as a chime
show an HMI earlier (within 10 seconds)—load the minimum services to start the system and show an UI interface to the user